JP2002162771A - Electrophotographic image receiving material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrophotographic image receiving material such as an electrophotographic image receiving sheet which is excellent in paper feeding, gloss, and a photograph-like touch and which can be used favorably for photography. SOLUTION: In the electrophotographic image receiving material, a toner image receiving layer containing a thermoplastic resin, and arbitrary another additional layer are provided on the support body. The centerline mean roughness of the surface of the support body is 0.01 to 5 μm. A mold release agent selected from the group consisting of a silicon-base compound, a fluorine compound, and a wax is added to either the toner image receiving layer or the arbitrary other additional layers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a toner image-receiving layer containing a thermoplastic resin on a support, and if necessary, an adhesion improving layer, an intermediate layer, an image adjusting layer, a protective layer, a cushion layer, etc. The present invention relates to an electrophotographic image receiving sheet provided with an optional additional layer such as a back layer and an anti-curl layer on the back side.

[0002]

2. Description of the Related Art Electrophotographic methods are used in copy machines and personal computer output machines because they can be printed on general-purpose paper (plain paper or high-quality paper) at high printing speeds by dry processing. However, when it is desired to output image information such as a face and a landscape as a photograph, general-purpose paper or the like is particularly inferior in gloss and has a different feel from a photograph. So, in order to improve gloss,
JP-A-4-212168 and JP-A-8-212645.
As disclosed in Japanese Patent Application Laid-Open Publication No. H11-264, an electrophotographic image receiving sheet in which a toner image receiving layer containing a thermoplastic resin is provided on a support has been proposed. Further, in order to make the feel of a photograph closer,
Japanese Patent No. 21164 proposes an electrophotographic image-receiving sheet using a support having a thermoplastic resin layer provided on the front and back surfaces of a base paper. Further, in recent years, since a wax or a silicon compound has been added to a toner to make it possible to impart a releasing property to a heat roller of a fixing unit, an oilless machine which does not use a fixing oil which is easy to maintain has begun to spread. I have.

[0003]

However, such a toner image-receiving layer containing a thermoplastic resin is likely to be offset in an oilless machine having no fixing oil, and is likely to cause a conveyance failure. For this reason, use of an additive having a releasing effect in the thermoplastic resin layer is disclosed in JP-A-11-52604, JP-A-11-52605, JP-A-11-52606, and JP-A-11-52606.
Although disclosed in Japanese Patent Nos. 212292, there are drawbacks in that the glossiness is impaired and the feel is greatly different from that of the photograph. Accordingly, an object of the present invention is to provide an electrophotographic image receiving material such as an electrophotographic image receiving sheet which is excellent in paper passing property, glossiness and photographic-like feel, and can be suitably used for photographic applications. is there. A second object of the present invention is to provide an electrophotographic image receiving sheet using an aqueous solvent and a method for producing the same.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, the above object can be effectively achieved by using an electrophotographic image receiving material having the following structure. And arrived at the present invention. That is, the present invention relates to an electrophotographic image receiving material provided with a toner image receiving layer containing a thermoplastic resin and any other additional layers on a support, wherein the center line average of the surface of the support is provided. An electrophotographic photoreceptor having a roughness of 0.01 to 5 μm and a release agent selected from the group consisting of a silicon compound, a fluorine compound and a wax, in the toner image receiving layer or any other additional layer; It relates to an image receiving material.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.

Support The support used in the present invention has a center line average roughness of 0.01 to 5 μm, preferably 0.05 to 5 μm.
If it is 3 μm, various supports can be used. By adjusting the center line average roughness within this range, it is possible to obtain an electrophotographic image receiving material having the above-described excellent properties such as paper passing properties. As such a support,
For example, base paper (including synthetic paper), synthetic resin sheet, or coated paper obtained by coating these sheets with resin or the like can be used. These supports may be used in a single layer or in multiple layers.

[0007] The material of the base paper can be selected from various materials without any particular limitation, which is used for the base paper known to be used for the support. Examples thereof include natural pulp selected from softwood and hardwood, synthetic pulp made of plastic materials such as polyethylene and polypropylene, and a mixture of natural pulp and synthetic pulp. If necessary, the base paper may contain clay, filler such as talc, calcium carbonate, and urea resin fine particles, rosin, sizing agents such as alkenyl ketene dimer, higher fatty acid, epoxidized fatty acid amide, and alkenyl succinic acid, and starch. Further, a paper strength enhancer such as polyamide polyamine epichlorohydrin and polyacrylamide, and a fixing agent such as a sulfate band and a cationic polymer may be blended.

The basis weight of the base paper is, for example, 50 to 250 g /
m ² , preferably in the range of 100 to 180 g / m ² , and the thickness is, for example, 50 to 250 μm.
m, preferably in the range of 100 to 180 μm. Specific examples of the base paper include high-quality paper and, for example, "Basics of Photographic Engineering-Silver halide photography-" edited by The Photographic Society of Japan, published by Corona Co., Ltd. (1979) (223)-(24)
0) Paper described on the page is mentioned as a preferable example.

In order to impart a desired center line average roughness to the surface of the base paper used for the support, for example, Japanese Unexamined Patent Publication No.
As disclosed in Japanese Patent Application Laid-Open No. 8-68037, the fiber length distribution (for example, 24 mesh screen residue,
It is preferable to use pulp fibers whose total content with the mesh screen residue is, for example, 20% by mass to 45% by mass and 24 mesh screen residue is 5% by mass or less. In addition, by applying heat and pressure with a machine calendar and a super calendar etc. to perform surface treatment,
The center line average roughness can be adjusted.

A synthetic resin sheet (film) as a support is formed by molding a synthetic resin into a sheet, and is obtained by, for example, extruding a polyolefin resin such as a polypropylene resin into a sheet. The coated paper as a support is a paper or a sheet in which various resins, rubber latex or polymer materials are coated on one or both sides of a sheet such as a base paper, and the amount of coating varies depending on the application. Examples of such coated paper include art paper, cast coated paper, and Yankee paper.

Further, various kinds of resin, rubber or polymer sheets or films may be laminated on a sheet such as base paper. Such laminating materials include:
For example, polyolefin, polyvinyl chloride, polyethylene terephthalate, polystyrene, polymethacrylate, polyethylene terephthalate, polycarbonate,
Examples include polypropylene, polyimide, and triacetyl cellulose. Note that these sheets or films may be subjected to a process of giving white reflectivity. As such a treatment method, for example, a method of incorporating a pigment such as titanium oxide in these sheets or films can be mentioned.

The support may be a laminate obtained by arbitrarily combining the various supports described above. As a method of applying a resin or the like to a base paper or the like, for example, a method of applying, impregnating, spraying, or the like on a resin solution or suspension or the like to these base papers is preferably exemplified. On both sides or one side of the base paper before coating or lamination, corona discharge treatment, flame treatment, glow discharge treatment, or plasma treatment for the purpose of improving the adhesion with the resin or the like applied on the base paper etc. It is preferable to perform an activation process such as this.

When coated paper is used as the support, it is appropriate to use a thermoplastic resin as the resin provided on the surface of the base paper or the like. Examples of such a thermoplastic resin include, for example, the following thermoplastic resins. (A) Polyolefin resins such as polyethylene resins and polypropylene resins, copolymer resins of olefins such as ethylene and propylene with other vinyl monomers, and acrylic resins. (B) having an ester bond terephthalic acid, isophthalic acid, maleic acid, fumaric acid,
Dicarboxylic acid components such as phthalic acid, adipic acid, sebacic acid, azelaic acid, abietic acid, succinic acid, trimellitic acid, and pyromellitic acid (these dicarboxylic acid components are substituted with sulfonic acid groups, carboxyl groups, etc. And ethylene glycol, diethylene glycol,
Propylene glycol, bisphenol A, a diether derivative of bisphenol A (for example, bisphenol A
Alcohol components such as ethylene oxide 2 adducts and bisphenol A propylene oxide 2 adducts), bisphenol S, 2-ethylcyclohexyl dimethanol, neopentyl glycol, cyclohexyl dimethanol, glycerin, and other alcohol components (these alcohol components include hydroxyl groups and the like) May be substituted) and a polyester resin obtained by condensation with

Polyacrylate resins such as polymethyl methacrylate, polybutyl methacrylate, polymethyl acrylate and polybutyl acrylate or polymethacrylate resins, polycarbonate resins, polyvinyl acetate resins, styrene acrylate resins and styrene-methacrylate esters Polymer resin, vinyl toluene acrylate resin, etc. Specifically, JP-A-59-1013
No. 95, No. 63-7971, No. 63-7972, No. 63-7973 and No. 60-294882. In addition, commercially available products include Byron 290, Byron 200, and Byron 28 manufactured by Toyobo.
0, Byron 300, Byron 103, Byron GK-
140, Byron GK-130, Kafu-made Tufton NE
-382, Tufton U-5, ATR-2009, ATR
-2010, Unitika ELIETEL UE3500, U
E3210, XA-8153, Nippon Gohsei Chemical's Polyester TP-220, R-188 and the like can be used.

(C) Polyurethane resin and the like. (D) Polyamide resin, urea resin and the like. (E) Polysulfone resin and the like. (F) polyvinyl chloride resin, polyvinylidene chloride resin,
Vinyl chloride-vinyl acetate copolymer resin, vinyl chloride-vinyl propionate copolymer resin, and the like. (G) Polyol resins such as polyvinyl butyral, and cellulose resins such as ethyl cellulose resin and cellulose acetate resin. (H) Polycaprolactone resin, styrene-maleic anhydride resin, polyacrylonitrile resin, polyether resin, epoxy resin, phenol resin and the like. The thermoplastic resins may be used alone or as a mixture of these thermoplastic resins. When using coated paper as the support, as the thermoplastic resin to be coated, in particular, polyethylene, for example, high-density polyethylene or low-density polyethylene, and further preferably, other polyolefins such as polypropylene, polyester, and the like are preferably used. be able to. Further, these resins may be used as a mixture.

For example, polyolefins are generally formed using low-density polyethylene, but in order to improve the heat resistance of the support, polypropylene, a blend of polypropylene and polyethylene, high-density polyethylene, high-density polyethylene, It is preferred to use a blend of polyethylene and low density polyethylene. In particular, it is most preferable to use a blend of high-density polyethylene and low-density polyethylene in terms of cost, suitability for lamination, and the like.

The blend of high-density polyethylene and low-density polyethylene is, for example, a blend ratio (mass ratio) of 1
/ 9 to 9/1, preferably 2/8 to 8 /
2, most preferably from 3/7 to 7/3. When used on both sides, the polyolefin used on the back side is preferably formed using, for example, high-density polyethylene or a blend of high-density polyethylene and low-density polyethylene. Although there is no particular limitation on the molecular weight of the polyethylene, the melt index is preferably between 1.0 to 40 g / 10 min for both high-density polyethylene and low-density polyethylene, and has an extrusion suitability. Is desirable.

The coating thermoplastic resin layer used for the coated paper may be a single layer, or may be used in a plurality of layers. ５０50 μm. The thermoplastic resin layer provided on the front surface and the thermoplastic resin layer provided on the back surface may be the same or different in components, physical properties, thickness, and configuration.

The resin to be applied or laminated need not be a thermoplastic resin. Thus, for example, monomers,
A resin obtained by reacting a thermoplastic resin with heat, light, a hardener, a crosslinking agent, or the like, or a thermosetting resin may be used. Further, at least one of the resin layers to be coated may be a monomer containing a photopolymerization initiator or a resin composition cured by irradiation with ultraviolet rays. Examples of the resin composition used in this case include those containing an electron beam-curable organic compound as a main component, and the type of the organic compound is not particularly limited. These compounds may be monomers or oligomers, and they may be used alone or may be a mixture thereof.

Further, the type of the UV-curable organic compound which is cured by the irradiation of the UV ray is not limited at all. This ultraviolet curable resin composition is prepared by adding a suitable amount of a photopolymerization initiator to the above-mentioned electron beam curable resin. Further, in the present invention, the resin composition subjected to electron beam curing does not require a photopolymerization initiator, of course, but even if it does, it does not impede any curing by electron beam irradiation. Absent. However, depending on the type of the photopolymerization initiator, a significant odor may be generated, and useless use must be avoided.

[0021] The unsaturated organic compound-containing resin composition may contain a white pigment and, if necessary, other additives. The electron beam-curable unsaturated compound can be selected, for example, from the following compounds. (1) Aliphatic, alicyclic, and araliphatic acrylate compounds of 1 to 6 valent alcohols and polyalkylene glycols (2) Aliphatic, alicyclic, araliphatic, 1 to 6 valent Acrylate compounds obtained by adding alkylene oxide to alcohol (3) Polyacryloylalkyl phosphate esters (4) Reaction product of carboxylic acid, polyol and acrylic acid (5) Isocyanate, polyol and acrylic acid (6) Reaction product of epoxy compound and acrylic acid (7) Reaction product of epoxy compound, polyol and acrylic acid

To describe these compounds specifically,
As electron beam-curable unsaturated organic compounds, polyoxyethylene epichlorohydrin-modified bisphenol A diacrylate, dicyclohexyl acrylate, epichlorohydrin-modified polyethylene glycol diacrylate,
1,6-hexanediol diacrylate, hydroxybivalic acid ester neopentyl glycol diacrylate, nonylphenoxy polyethylene glycol acrylate, ethylene oxide-modified phenoxylated phosphoric acid acrylate, ethylene oxide-modified phthalic acid acrylate, polybutadiene acrylate, caprolactan-modified tetrahydrofurfuryl Acrylate, tris (acryloxyethyl) isocyanurate, trimethylolpropane triacrylate,

Pentaerythritol triacrylate,
Examples include pentaerythritol tetraacrylate, pentaerythritol pentaacrylate, dipentaerythritol hexaacrylate, polyethylene glycol diacrylate, 1,4-butadienediol diacrylate, neopentyl glycol diacrylate, and neopentyl glycol-modified trimethylolpropane diacrylate. Can be. In the present invention, these organic compounds can be used alone or in combination of two or more.

The photopolymerization initiator used in the present invention can be selected from generally known ones. Acetophenones such as trichloroacetophenone, o-benzoylmethylbenzoate, benzophenone, Michler's ketone,
Benzyl, benzoin, benzoin alkyl ether,
It can be appropriately selected from benzyldimethyl ketal, tetramethylthiuram monosulfide, xanthone, thioxanthones, benzophenones, azo compounds and the like. It is also possible to use a mixture of two or more of these photopolymerization initiators.

In general, the amount of the photopolymerization initiator to be added is preferably in the range of usually 0.1 to 10% by mass based on the weight of the ultraviolet curable resin. Further, it is preferable to use a known photopolymerization accelerator such as N-methyldiethanolamine or bisdiethylaminobenzophenone in combination with the photopolymerization initiator in order to improve the curing speed. The amount of the photopolymerization accelerator is not particularly limited as long as the effect is exerted, but is generally 0.5% by weight of the photopolymerization initiator.
Suitably, the amount is up to twice the amount.

The electron beam accelerator used for electron beam irradiation is not particularly limited, and examples thereof include a Van de Graff type scanning method, a double scanning method,
An electron beam irradiation device such as a curtain beam method can be used. Among them, a curtain beam type which is relatively inexpensive and can provide a large output is effectively used. The acceleration voltage at the time of electron beam irradiation is preferably, for example, 100 to 300 kV, and the absorbed dose is 0.1 to 6.0.
Mrad is preferable, and 0.2 to 4.0 Mrad is particularly preferable. When the absorbed dose is 0.1 Mrad or less, curing of the resin by electron beam irradiation may be insufficient. On the other hand, if the absorbed dose is made higher than necessary, not only is energy useless, but also unnecessary use of the paper substrate is undesirably caused.

The oxygen concentration in the atmosphere during electron beam irradiation is preferably, for example, 500 ppm or less. If the oxygen concentration exceeds 500 ppm, oxygen acts as an inhibitor of the polymerization reaction, and the curing of the resin composition may be insufficient. The electron beam-curable resin coating solution does not come into direct contact with air, and therefore it is not always necessary to particularly reduce the oxygen concentration in the atmosphere during electron beam irradiation. In addition, an inert gas such as nitrogen gas may be supplied for the purpose of preventing ozone generation due to electron beam irradiation or cooling a window that generates heat when the electron beam passes through the window.

There is no particular limitation on the type of the ultraviolet irradiation device used for the ultraviolet irradiation. For example, a low-pressure mercury lamp, a medium-pressure mercury lamp, a high-pressure mercury lamp, a metal halide lamp, or the like can be used. In combination with a light condensing type, a diffusion type or the like, and an ultraviolet irradiation lamp generally generates heat, it is preferable to use a water cooling jacket, a cold mirror, an aluminum mirror or the like for cooling. In general, in order to obtain sufficient curing, it is preferable to use a plurality of ultraviolet irradiation devices having an output of 80 w / cm or more according to the processing speed.

After the surface resin coating layer is cured by irradiation with ultraviolet rays and electron beams, a surface treatment such as a corona discharge treatment is performed for the purpose of improving the adhesion to the toner image receiving layer,
Alternatively, an undercoat layer may be applied to the surface. The surface of the thermoplastic resin layer or the like used for the coated paper may have a glossy surface, or a fine surface, matte surface or silk surface described in JP-A-55-26507, if necessary. Alternatively, the surface of the thermoplastic resin layer or the like on the side opposite to the side on which the conductive layer provided as needed is formed (the back side) may be provided with a matte surface. Further, these surfaces after molding can be subjected to an activation treatment such as a corona discharge treatment or a flame treatment.
An underlining process as described in Japanese Patent Application Laid-Open No. 1-846443 can also be performed. Various additives appropriately selected can be added to the thermoplastic resin layer and the like within a range that does not impair the object of the present invention.

The thickness of the support used in the present invention is, for example, 25 μm to 300 μm, preferably 50 μm to 2 μm.
Suitably, it is 60 μm, more preferably 75 μm to 220 μm. As the rigidity of the support, various ones can be used according to the purpose. As the support for the electrophotographic image-receiving material of photographic quality, a support for a color silver halide photograph is used. A close one is preferably used.

The support used in the present invention has a thermal conductivity of, for example, 0.50 at 20 ° C. and 65% relative humidity from the viewpoint of fixing performance.
It is preferably at least kcal / m · h · ° C. Here, the thermal conductivity can be measured by using a method described in JP-A-53-66279 on a transfer sheet conditioned according to JIS P8111. In addition, the density of the support is preferably 0.7 g / cm ³ or more from the above viewpoint. Various additives appropriately selected can be mixed in the support within a range that does not impair the object of the present invention. As such an additive, for example, a brightener, a conductive agent, a filler, a pigment or a dye such as titanium oxide, ultramarine blue, carbon black, or the like can be contained as necessary.

One or both surfaces of the support can be subjected to various surface treatments or undercoating for the purpose of improving the adhesion to a layer provided thereon. Examples of the surface treatment include, for example, a molding treatment of a glossy surface, a fine surface, a matte surface or a silk surface described in JP-A-55-26507, a corona discharge treatment, a flame treatment, a glow discharge treatment, or a plasma treatment. Activation processing such as processing. As the undercoat, for example, a method described in JP-A-61-846443 can be used. In addition, these may be used alone, or may be subjected to activation treatment after performing molding or the like, or may be used in combination in any combination, such as performing undercoating after surface treatment such as activation treatment. it can.

A hydrophilic binder, a semiconductive metal oxide such as alumina sol and tin oxide, carbon black and other charged materials may be used in the support used in the present invention, its front surface and back surface, and combinations thereof. An inhibitor may be compounded or applied. Specifically, JP-A-63-22024
No. 6, the support described in JP-A No. 6 can be used. The support used in the present invention is preferably capable of withstanding the fixing temperature and satisfying requirements in terms of whiteness, slipperiness, friction, antistatic property, dent after fixing and the like.

Electrophotographic Image- Receiving Material The electrophotographic image-receiving material of the present invention may have only a toner image-receiving layer on a support or, depending on the intended use, an additional image-receiving layer together with the toner image-receiving layer. It may have a layer. A toner image receiving layer for receiving at least the color and black toners and forming an image is provided on the support.
Examples of the layer other than the toner image receiving layer include a surface protective layer, an intermediate layer, an undercoat layer, a cushion layer, a charge control (prevention) layer, a reflective layer, a color adjustment layer, a storage stability improving layer, an adhesion preventing layer, A curl layer, a smoothing layer, and the like can be provided. Further, each layer may be composed of two or more layers.

In the case of a transmission type electrophotographic image receiving material in which a toner image receiving layer or the like is provided on a transparent support, each layer on the support is preferably transparent. In the case of a reflective electrophotographic image receiving material in which a toner image receiving layer or the like is provided on a reflective support, each layer on the support does not need to be transparent, but is preferably white. The whiteness is preferably 85% or more as measured by the method specified in JIS P 8123. Also, 440n
In the wavelength range of m to 640 nm, the spectral reflectance is 85% or more,
Further, it is preferable that the difference between the maximum spectral reflectance and the minimum spectral reflectance in the same wavelength range is within 5%. Furthermore, from 400 nm
More preferably, the spectral reflectance in the wavelength region of 700 nm is 85% or more, and the difference between the maximum spectral reflectance and the minimum spectral reflectance in the same wavelength region is within 5%.

The electrophotographic image-receiving material used in the present invention may have a back layer on the opposite side of the support from the toner image-receiving layer. In the case of a transmission type electrophotographic image receiving material in which a toner image receiving layer or the like is provided on a transparent support, it is preferable that the back layer is also transparent. In the case of a photographic image receiving material, the back layer does not need to be transparent, and may be of any color. However, in the case of a double-sided output image-receiving sheet that forms an image on the back surface of the electrophotographic image-receiving material,
The back layer is also preferably white. The whiteness and the spectral reflectance are preferably 85% or more as in the case of the surface. Also,
The electrophotographic image receiving material of the present invention has an opacity of JIS P
85% or more as measured by the method specified in 8138,
Preferably, it is 90% or more.

Release Agent The release agent used in the present invention is a compound selected from the group consisting of silicon compounds, fluorine compounds and waxes. The release agent can be blended in any layer on the toner image receiving layer side or on the opposite side to the support in order to prevent offset or the like of the toner image receiving layer. The release agent is preferably blended in any layer on the toner image receiving layer side. In particular, in order to exhibit the effect of preventing the offset, it is preferable to mix the compound with the layer constituting the outermost surface on the toner image receiving layer side. In addition, as long as the release property or the anti-offset property is not impaired when applying pressure with heat at the time of fixing the toner, a silicon compound and / or a fluorine compound and / or
Or on the outermost surface layer where wax is compounded,
A decorative layer or the like for decorating the surface may be laminated.

As the release agent used in the present invention, generally, compounds described in “Revised Properties and Application of Wax” by Koshobo and the silicone handbook published by Nikkan Kogyo Shimbun can be used. Also, Japanese Patent Publication No. 59-38581
No., Tokuhei 4-32380, Tokuto 2838498
No. 2949958 and JP-A-50-117433.
No. 52-52640, No. 57-148755,
No. 61-62056, No. 61-62057, No. 61
-118760, JP-A-2-42451, 3-4
Nos. 1465, 4-212175, 4-21457
Nos. 0, 4-263267, 5-34966, 5-119514, 6-59502, 6-16
No. 1150, No. 6-175396, No. 6-21904
No. 0,

6-230600 and 6-29509
No. 3, 7-36210, 7-43940, 7
-56387, 7-56390, 7-6433
5, No. 7-199681, No. 7-223362,
Nos. 7-287413, 8-184992, 8-
No. 227180, No. 8-248671, No. 8-248
No. 799, No. 8-248801, No. 8-278663
Nos. 9-152739, 9-160278, 9-185181, 9-319139, and 9-3
No. 19143, No. 10-20549, No. 10-488
No. 89, No. 10-198069, No. 10-20711
No. 6, No. 11-2917, No. 11-44969, No. 11-65156, No. 11-73049, No. 11-
Silicon-based compounds, fluorine compounds and waxes used in the toners described in the respective publications of 194542 can also be preferably used. These compounds may be used in combination of two or more.

Specifically, as the silicon-based compound,
As the silicone oil, an unmodified silicone oil (specifically, dimethylsiloxane oil, methyl hydrogen silicone oil, phenylmethyl silicone oil, KF-96 or KF-96 manufactured by Shin-Etsu Chemical Co., Ltd.)
96L, KF-96H, KF-99, KF-50, KF
-54, KF-56, KF-965, KF-968, K
F-994, KF-995, HIVAC F-4, F-
5. SH200 made by Toray Dow Corning Silicone
SH203, SH490, SH510, SH550, S
H710, SH704, SH705, SH7028A,
SH7036, SM7060, SM7001, SM77
06, SH7036, SH8710, SH1107, S
H8627,

TSF400, TSF4 made by Toshiba Silicone
01, TSF404, TSF405, TSF431, T
SF433, TSF434, TSF437, TSF45
0 series, TSF451 series, TSF456, T
SF458 series, TSF483, TSF484, T
SF4045, TSF4300, TSF4600, YF
33 series, YF-3057, YF-3800, YF
-3802, YF-3804, YF-3807, YF-
3897, XF-3905, XS69-A1753, T
EX100, TEX101, TEX102, TEX10
3, TEX104, TSW831, etc.),

Amino-modified silicone oil (KF-857, KF-858, KF-858, Shin-Etsu Chemical Co., Ltd.
859, KF-861, KF-864, KF-880,
Toray Dow Corning Silicone SF8417, S
M8709, TSF4700, TSF made by Toshiba Silicone
4701, TSF4702, TSF4703, TSF4
704, TSF4705, TSF4706, TEX15
0, TEX151, TEX154, etc.), carboxy-modified silicone oil (commercially available, such as BY16-880 manufactured by Toray Dow Corning Silicone, TSF4770, XF42-A9248 manufactured by Toshiba Silicone), and carbinol-modified silicone oil (commercially available, manufactured by Toshiba Silicone) XF42-B0970, etc.), vinyl-modified silicone oil (commercially available from Toshiba Silicone XF40-B)
A1987, etc.), epoxy-modified silicone oil (commercially available from Dow Corning Toray Silicone SF8)
411, SF8413, TSF396 made by Toshiba Silicone
5, TSF4730, TSF4732, XF42-A4
439, XF42-A4438, XF42-A504
1, XC96-A4462, XC96-A4463, X
C96-A4464, TEX170, etc.),

Polyether-modified silicone oil (KF-351 (A), KF-3 manufactured by Shin-Etsu Chemical as commercial products)
52 (A), KF-353 (A), KF-354
(A), KF-355 (A), KF-615 (A), K
F-618, KF-945 (A), Dow Corning Toray Silicone SH3746, SH3771, SF8
421, SF8419, SH8400, SF8410,
TSF4440, TSF4441, T made by Toshiba Silicone
SF4445, TSF4446, TSF4450, TS
F4452, TSF4453, TSF4460, etc.),
Silanol-modified silicone oil, methacryl-modified silicone oil, mercapto-modified silicone oil, alcohol-modified silicone oil (commercially available from Toray Dow Corning Silicone SF8427, SF842
8, TSF4750, TSF475 made by Toshiba Silicone
1, XF42-B0970),

Alkyl-modified silicone oil (commercially available SF841 manufactured by Toray Dow Corning Silicone)
6. TSF410, TSF411, T made by Toshiba Silicone
SF4420, TSF4421, TSF4422, TS
F4450, XF42-334, XF42-A316
0, XF42-A3161), fluorine-modified silicone oil (FS1265 manufactured by Toray Dow Corning Silicone as a commercial product, FQF501 manufactured by Toshiba Silicone, etc.), silicon rubber and silicon fine particles (SH851U manufactured by Toray Dow Corning Silicone as a commercial product, SH
745U, SH55UA, SE4705U, SH502
UA & B, SRX539U, SE6770U-P, DY
38-038, DY38-047, Trefill F-20
1, F-202, F-250, R-900, R-902
A, E-500, E-600, E-601, E-50
6, BY29-119, Toshiba Silicone Tospearl 1
05, 120, 130, 145, 240, 3120, etc.), silicone-modified resins (specifically, olefin resins and polyester resins,

Vinyl resin, polyamide resin, cellulose resin, phenoxy resin, vinyl chloride-vinyl acetate resin,
Dialomer SP203 manufactured by Dainichi Seika as a commercial product such as a urethane resin, an acrylic resin, a styrene-acrylic resin, or a compound obtained by modifying these copolymerized resins with silicone.
V, SP712, SP2105, SP3023, MODIPER FS700, FS710, FS720 made by NOF
FS730, FS770, Cymac U manufactured by Toa Gosei Chemical
S-270, US-350, US-352, US-38
0, US-413, US-450, Reseda GP-70
5, GS-30, GF-150, GF-300, Toray
Dow Corning Silicone SH997, SR211
4, SH2104, SR2115, SR2202, DC
I-2577, SR2317, SE4001U, SRX
625B, SRX643, SRX439U, SRX48
8U, SH804, SH840, SR2107, SR2
115, YR3370, TSR112 made by Toshiba Silicone
2, TSR102, TSR108, TSR116, TS
R117, TSR125A, TSR127B, TSR1
44, TSR180, TSR187, YR47, YR3
187, YR3224, YR3232, YR3270,
YR3286, YR3340, YR3365, TEX1
52, TEX153, TEX171, TEX172, etc.),

Reactive silicone compounds (specifically, there are addition reaction type, peroxide curable type and ultraviolet curable type, and as commercial products, TSR1500 and TSR1 manufactured by Toshiba Silicone Co., Ltd.)
510, TSR1511, TSR1515, TSR15
20, YR3286, YR3340, PSA6574,
TPR6500, TPR6501, TPR6600, T
PR6702, TPR6604, TPR6700, TP
R6701, TPR6705, TPR6707, TPR
6708, TPR6710, TPR6712, TPR6
721, TPR6722, UV9300, UV931
5, UV9425, UV9430, XS56-A277
5, XS56-A2982, XS56-A3075, X
S56-A3969, XS56-A5730, XS56
-A8012, XS56-B1794, SL6100,
SM3000, SM3030, SM3200, YSR3
022).

As the fluorine compound, fluorine oil (a commercially available product, Daifoil # 1, # 3, # 3 manufactured by Daikin Industries, Ltd.)
10, # 20, # 50, # 100, Unidyne TG-4
40, TG-452, TG-490, TG-560, T
G-561, TG-590, TG-652, TG-67
0U, TG-991, TG-999, TG-3010,
TG-3020, TG-3510, MF-100, MF-110, MF-120, MF- manufactured by Tochem Products
130, MF-160, MF-160E, Asahi Glass Surflon S-111, S-112, S-113, S-12
1, S-131, S-132, S-141, S-14
5. Mitsui Fluorochemical FC-430, FC-431
Fluoro rubber (Toray Dow Corning Silicone LS63U etc. as a commercial product), Fluorine modified resin (Nippon Oil & Fat Modiper F200, F22 as a commercial product)
0, F600, F2020, F3035, Dainichi Seika dialomers FF203, FF204,

Asahi Glass Surflon S-381, S-38
3, S-393, SC-101, SC-105, KH-
40, SA-100, EF-35 manufactured by Tochem Products
1, EF-352, EF-801, EF-802, EF
-601, TFE, TFEA, TFEMA, PDFO
H, Sumitomo 3M THV-200P, etc.), fluorinated sulfonic acid compounds (commercially available from Tochem Products EF-
101, EF-102, EF-103, EF-104,
EF-105, EF-112, EF-121, EF-1
22A, EF-122B, EF-122C, EF-12
3A, EF-123B, EF-125M, EF-13
2, EF-135M, EF-305, FBSA, KFB
S, LFBS, etc.), fluorosulfonic acid, fluoric acid compounds and salts (specifically, hydrofluoric acid, diluted hydrofluoric acid, borofluoric acid, zinc borofluoride, nickel borofluoride, tin borofluoride, lead borofluoride, copper borofluoride , Hydrofluoric acid, potassium fluorotitanate, perfluorocaprylic acid, ammonium perfluorooctanoate, etc., inorganic fluorides (specifically, aluminum fluoride, potassium fluorosilicate, potassium fluorozirconate, zinc fluoride tetrahydrate) Calcium fluoride, lithium fluoride, barium fluoride, tin fluoride, potassium fluoride, potassium acid fluoride, magnesium fluoride, titanic fluoride, zirconic fluoride, ammonium hexafluorophosphate, hexafluorophosphate Potassium fluoride phosphate)
And the like.

As the wax, paraffin wax (a commercially available paraffin wax 155, 150, 140, 135, 130, 1
25, 120, 115, HNP-3, HNP-5, HN
P-9, HNP-10, HNP-11, HNP-12,
HNP-14G, SP-0160, SP-0145, S
P-1040, SP-1035, SP-3040, SP
-3035, NPS-8070, NPS-L-70, O
X-2151, OX-2251, EMUSTAR-03
84, EMUSTAR-0136, Chukyo Yushi's cellosol 686, 428, 651-A, A, H-803, B-
460, E-172, 866, K-133, Hydrin D-337, E-139, Nisseki Mitsubishi Oil 125 ° paraffin, 125 ° FD, 130 ° paraffin, 135 °
Paraffin, 135 ° H, 140 ° paraffin, 140
° N, 145 ° paraffin, paraffin wax M, etc.),

Microcrystalline wax (as commercial products, Hi-Mic-2095, Hi-Mic manufactured by Nippon Seiro Co., Ltd.)
-3090, Hi-Mic-1080, Hi-Mic-
1070, Hi-Mic-2065, Hi-Mic-1
045, Hi-Mic-2045, EMUSTAR-0
001, EMUSTAR-042X, Cellosol 967, M, manufactured by Chukyo Yushi, 155 microwax, 180 microwax, manufactured by Nisseki Mitsubishi Petroleum, etc.
0, OX-0650B, OX-0153, OX-261
BN, OX-0851, OX-0550, OX-075
0B, JP-1500, JP-056R, JP-011
P, etc.) and carnauba wax (EMUSTAR-0413 manufactured by Nippon Seiro Co., Ltd. as a commercial product)
Chukyo Yushi's Cellosol 524, etc.), Castor oil (commercially available Ito Oil's refined castor oil, etc.), rapeseed oil, soybean oil, wood wax, cotton wax, rice wax, sugarcane wax, candelilla wax, Japan wax, jojoba oil , Animal beeswax, lanolin, spermaceti, stew wax (whale oil), wool wax,

Montan wax as a mineral wax,
Natural waxes such as montan ester wax, ozokerite and ceresin, and fatty acid esters (commercially available products such as Sansosizer DOA, AN-800, D
INA, DIDA, DOZ, DOS, TOTM, TIT
M, E-PS, nE-PS, E-PO, E-4030,
E-6000, E-2000H, E-9000H, TC
P, C-1100, etc.) and polyethylene wax as a synthetic hydrocarbon (Polylon A, 3 manufactured by Chukyo Yushi as commercial products)
93, H-481, Sanyo Chemical sun wax E-31
0, E-330, E-250P, LEL-250, LE
L-800, LEL-400P, etc.), polypropylene wax (Viscol 330- manufactured by Sanyo Chemical as a commercial product)
P, 550-P, 660-P),

Acid amide compounds or acid imide compounds (such as Fischer-Tropsch wax (commercially available products such as FT100 and FT-0070 manufactured by Nippon Seiro Co., Ltd.). Cellulosol 920, B-495 made of oil and fat
Hymicron G-270, G-110, Hydrin D-
757), amine-modified polypropylene as a modified wax (QN-7700 manufactured by Sanyo Chemical as a commercial product), acrylic acid-modified or fluorine-modified, olefin-modified wax,
Urethane type wax (commercially available from Nippon Seiro NPS-
6010, HAD-5090, etc.), alcohol type wax (NPS-9210, NP manufactured by Nippon Seiro as commercial products)
S-9215, OX-1949, XO-020T, etc.)
Hydrogenated castor oil (such as caster wax manufactured by Ito Oil) as a hydrogenated wax; castor oil derivative (dehydrated castor oil DCO, DC manufactured by Ito Oil as a commercial product)
OZ-1, DCO Z-3, Castor oil fatty acid CO-F
A, ricinoleic acid,

Dehydrated castor oil fatty acid DCO-FA, dehydrated castor oil fatty acid epoxy ester D-4 ester, castor oil-based urethane acrylate CA-10, CA-20, C
A-30, Castor oil derivative MINERASOL S-7
4, S-80, S-203, S-42X, S-321,
Special castor oil-based condensed fatty acid MINERASOL RC-
2, RC-17, RC-55, RC-335, special castor oil-based condensed fatty acid ester MINERASOL LB
-601, LB-603, LB-604, LB-70
2, LB-703, # 11, L-164, etc.), stearic acid (such as 12-hydroxystearic acid manufactured by Ito Oil as a commercial product),

Lauric acid, myristic acid, palmitic acid, behenic acid, sebacic acid (commercially available, such as sebacic acid manufactured by Ito Oil), undecylenic acid (commercially available, such as undecylenic acid manufactured by Ito Oil), heptyl acid (commercially available) Heptyl acid manufactured by Ito Oil), maleic acid, highly maleated oil (HIMAL manufactured by Ito Oil as a commercial product)
EIN DC-15, LN-10, 00-15, DF-
20, SF-20, etc.) and blow-in oil (Cerbonol # 10, # 30, # 60, R-4 manufactured by Ito Oil as a commercial product)
And synthetic waxes such as cyclopentadiene-ized oil (commercially available CP oil and CP oil-S manufactured by Ito Oil). As a release agent,
These derivatives, oxides, purified products, and mixtures can also be used. Further, they may have a reactive substituent.

The release agent used in the present invention is, for example, 0.1 to 10 based on the mass of the layer in which the release agent is blended.
It is suitable that the amount is set to 0.3% to 8.0% by mass, particularly preferably 0.5% to 5.0% by mass.

Toner Image Receiving Layer The toner image receiving layer made of the thermoplastic resin used in the present invention receives a toner for forming an image from a developing drum or an intermediate transfer member by (static) electricity, pressure or the like in a transfer step. In addition, it has a function of fixing by heat, pressure or the like in the fixing step. The toner image-receiving layer used in the present invention may contain various additives together with the thermoplastic resin as long as it does not affect the function as the toner image-receiving layer. The thickness of the toner image receiving layer is at least 以上 of the particle diameter of the toner used,
Preferably, the thickness is 1 to 3 times. As the toner image receiving layer, JP-A-5-2163 is used.
No. 22 and 7-301939 are preferable.

The toner image receiving layer preferably has physical properties of one of the following items, more preferably a plurality of items, and most preferably all of the items. (1) Tg (glass transition temperature) of the toner image receiving layer is 30 ° C.
Above, Tg of toner + 20 ° C or less. (2) T1 / 2 (1/2 method softening point) of the toner image receiving layer is
60-150 ° C, preferably 80-120 ° C. (3) Tfb (outflow start temperature) of the toner image receiving layer is 40
100 ° C., preferably Tfb of the toner image receiving layer is equal to or lower than Tfb of the toner + 10 ° C. (4) The temperature at which the viscosity of the toner image receiving layer becomes 1 × 10 ⁵ CP is 40 ° C. or higher and lower than that of the toner. (5) The storage elastic modulus (G ′) at the fixing temperature of the toner image receiving layer is 1 × 10 ² to 1 × 10 ⁵ Pa, and the loss elastic modulus (G ″) is 1 × 10 ² to 1 × 10 ⁵ Pa.

(6) The loss tangent (G ″ / G ′) which is the ratio of the loss elastic modulus (G ″) at the fixing temperature of the toner image receiving layer to the storage elastic modulus (G ′) is 0.01 to 10. . (7) The storage elastic modulus (G ′) at the fixing temperature of the toner image receiving layer is −50 to +2500 with respect to the storage elastic modulus (G ″) at the fixing temperature of the toner. (8) On the image receiving layer of the fused toner The inclination angle is 50 degrees or less,
Especially below 40 degrees. Japanese Patent No. 2,788,358 discloses a toner image receiving layer.
No., JP-A Nos. 7-248637 and 8-305067,
Those satisfying the physical properties and the like disclosed in JP 10-239889 A and the like are preferable.

The physical properties (1) can be measured by a differential scanning calorimeter (DSC). (2)-
The physical properties (4) can be measured, for example, using a flow tester CFT-500 manufactured by Shimadzu Corporation. (5)
The physical properties of (7) to (7) can be measured using a rotary rheometer (for example, a dynamic analyzer RADII manufactured by Rheometrics). The physical properties of (8) were measured using a contact angle measuring device manufactured by Kyowa Interface Chemical Co., Ltd.
It can be measured by the method disclosed in JP-A-34916.

As the thermoplastic resin used in the toner image receiving layer of the present invention, any thermoplastic resin which can be deformed at the fixing temperature to receive the toner may be used. Preferably, the thermoplastic resin used in the toner image-receiving layer is a resin of the same type as the resin used as the binder of the toner. In many cases, the toner uses a polyester resin, a styrene-acrylate copolymer, a styrene-methacrylate copolymer, and the like. As the plastic resin, it is preferable to use a polyester resin, a styrene-acrylate copolymer, a styrene-methacrylate copolymer, and more preferably a polyester resin, a styrene-acrylate copolymer, and a styrene-methacryl. 20% by mass such as acid ester copolymer
It is preferable to contain the above. Specifically, when the coated paper is used as the support described above, the thermoplastic resin described in the section of the thermoplastic resin used for the coated paper can be preferably used.

The thermoplastic resin used for the toner image receiving layer is disclosed in JP-B-5-127413 and JP-A-8-19439.
No. 4, No. 8-334915, No. 8-334916,
Those satisfying the physical properties and the like disclosed in JP-A-9-171265 and JP-A-10-221877 are preferably used. As the thermoplastic resin used in the toner image receiving layer of the present invention, those which can satisfy the above-described physical properties of the image receiving layer in a state where the image receiving layer is formed are preferable. More preferably, a resin alone that satisfies the physical properties preferable for the above-mentioned toner image receiving layer is used. It is also preferable to use two or more resins having different physical properties as described above.

As the thermoplastic resin used for the toner image receiving layer, those having a molecular weight larger than the thermoplastic resin used for the toner are preferably used. However, the aforementioned molecular weight relationship is not always preferable depending on the relationship between the thermodynamic properties of the toner resin and the image receiving layer resin. For example, when the softening temperature of the thermoplastic resin used in the toner image receiving layer is higher than that of the toner resin, it may be preferable that the molecular weight is the same or the thermoplastic resin of the toner image receiving layer is smaller. As the thermoplastic resin used for the toner image receiving layer, it is also preferable to use a mixture of resins having the same composition and different average molecular weights. Further, the relationship with the molecular weight of the thermoplastic resin used for the toner is preferably the relationship disclosed in JP-A-8-334915. The molecular weight distribution of the thermoplastic resin used for the toner image receiving layer is preferably wider than the molecular weight distribution of the thermoplastic resin used for the toner.

The thermoplastic resin used for the toner image receiving layer may be a water-soluble one. The composition, bonding structure, molecular structure, molecular weight, molecular weight distribution, form, and the like of the water-soluble thermoplastic resin are not particularly limited as long as the resin is water-soluble. In order to make the thermoplastic resin water-soluble, for example, it is necessary that the thermoplastic resin has a water-solubilizing group. Examples of the water-solubilizing group include, for example, a hydroxyl group, a carboxylic acid group, and an amino group. Groups, amide groups, ether groups and the like. Examples of the water-soluble thermoplastic resin include Research Disclosure 17, 643, page 26, 18, 716.
No. 651, pages 873-874 of 307,105 and pages (71)-(75) of JP-A-64-13546. Specifically, as the water-soluble thermoplastic resin, for example, vinylpyrrolidone-vinyl acetate copolymer, styrene-vinylpyrrolidone copolymer, styrene-maleic anhydride copolymer, water-soluble polyester, water-soluble polyurethane, Water-soluble nylon, water-soluble epoxy resin and the like can be used.

The toner image-receiving layer can be prepared by coating a non-water-soluble thermoplastic resin on a support, for example, with an aqueous dispersion. Aqueous dispersions include acrylic resin emulsions, polyvinyl acetate emulsions, SBR (styrene / butadiene / rubber)
Emulsions, polyester resin emulsions, polystyrene resin emulsions, urethane resin emulsions and the like are appropriately selected, and two or more kinds can be used in combination.
In the case of gelatin, it can be selected from lime-treated gelatin, acid-treated gelatin, and so-called demineralized gelatin in which the content of calcium and the like is reduced depending on the purpose.

When the binder of the toner is a polyester resin, the resin of the toner image receiving layer is preferably a polyester resin. Commercially available polyester emulsions include, for example, Toyobo Vironal MD-125.
0, MD-1930, or Zoada Chemical Plus Coat Z-4
46, Z-465, RZ-96, ES-
611, ES-670, Pesresin A-16 made by Takamatsu Yushi
0P, A-210, A-515GB, A-620 and the like. The film forming temperature of the thermoplastic resin is preferably room temperature or higher for storage before printing, and is preferably 100 ° C. or lower for fixing toner particles.

In the toner image receiving layer used in the present invention, in addition to the above-mentioned thermoplastic resin, various additives can be oriented for the purpose of improving the thermodynamic properties of the toner image receiving layer. Examples of such additives include a plasticizer, a filler, a crosslinking agent, an emulsion, and a dispersion. As the plasticizer, a known plasticizer for a resin can be used without any particular limitation. The plasticizer has a function of adjusting the flow or softening of the toner image receiving layer by heat and / or pressure when fixing the toner. Examples of plasticizers include “Chemical Handbook” (edited by The Chemical Society of Japan, Maruzen), “Plasticizers-Theory and Application-” (ed. Research "(edited by the Society of Polymer Chemistry)
And "Handbook of Rubber / Plastic Compounds" (Rubber Digest Inc.).

Some plasticizers are described as high-boiling organic solvents, hot solvents and the like.
-83154, 59-178451, 59-1
No. 78453, No. 59-178454, No. 59-17
No. 8455, No. 59-178457, No. 62-174
No. 754, No. 62-245253, No. 61-2094
No. 44, No. 61-200538, No. 62-8145
No. 62-9348, No. 62-30247, No. 6
2-136646, 62-174754, 62
-245253, 61-209444, 61-
No. 200538, No. 62-8145, No. 62-934
No. 8, No. 62-30247, No. 62-136646
(For example, phthalates, phosphates, fatty esters, abietic esters, adipic esters, sebacic esters) , Azelaic acid esters,

Benzoic acid esters, butyric acid esters, epoxidized fatty acid esters, glycolic acid esters,
Propionates, trimellitates,
Citrates, sulfonic esters, carboxylic esters, succinic esters, maleic esters, fumaric esters, phthalic esters, stearic esters, etc.), amides (for example, fatty acid amides, Compounds such as sulfoamides), ethers, alcohols, lactones, and polyethyleneoxys. The plasticizer can be used by mixing with the resin. In addition, when a plasticizer has a releasing effect, it means that it does not have such an effect. If the plasticizer has a release effect, such a plasticizer corresponds to the release agent of the present invention.

Further, as the plasticizer, a polymer having a relatively low molecular weight can be used. In this case, the molecular weight is preferably lower than the molecular weight of the binder resin to be plasticized, and the molecular weight is suitably 15,000 or less, preferably 5000 or less. In the case of a polymer plasticizer, the polymer is preferably the same type of polymer as the binder resin to be plasticized. For example, a low molecular weight polyester is preferable for plasticizing a polyester resin. Further, oligomers can also be used as plasticizers. Commercially available products other than the compounds listed above include, for example, Asahi Denka Kogyo Adecaizer PN-170 and PN-
1430 and C.I. P. HALL PARAPLEX
-G-25, G-30, G-40, Rika Hercules products ester gum 8L-JA, ester R-95, pentalin 4851, FK115, 4820, 830, Luizol 28-JA, picolatics A75, picotex LC, crystal Rex 3085 and the like.

The plasticizer is a stress or strain generated when the toner particles are embedded in the toner image receiving layer (physical strain such as elastic force and viscosity, strain due to material balance of molecules, binder main chain, pendant portion, etc.). Can be used arbitrarily to mitigate the In the toner image receiving layer, the plasticizer may be in a micro-dispersed state, in a micro-phase-separated state in a sea-island state, or in a state of being sufficiently mixed and dissolved with other components such as a binder. The plasticizer is, for example, 0.001 to 9 based on the mass of the toner image receiving layer.
It is preferable to add 0 mass%, preferably 0.1 to 60 mass%, particularly preferably 1 to 40 mass%. In addition, the plasticizer is used to adjust slipperiness (improve transportability due to a reduction in frictional force), improve fixing portion offset (peeling of toner and layer to the fixing portion), adjust curl balance, and adjust charging (toner electrostatic image). May be used for such purposes.

As the organic or inorganic filler arbitrarily added to the toner image-receiving layer of the present invention, those known as a reinforcing agent for a binder resin, a filler, and a reinforcing material can be used. Fillers can be selected with reference to Handbook of Rubber / Plastic Compounding Chemicals (Rubber Digest), New Edition Plastics Compounding Fundamentals and Applications (Taiseisha), Filler Handbook (Taiseisha), etc. it can. Various inorganic fillers (or pigments) can be used as the filler. As the inorganic pigment, for example, silica, alumina, titanium dioxide, zinc oxide, zirconium oxide, mica-like iron oxide, lead white, lead oxide, cobalt oxide, strontium chromate, molybdenum-based pigment, smectite, magnesium oxide, calcium oxide, carbonate Calcium, mullite and the like.
As the filler, silica and alumina are particularly preferable. Two or more fillers may be used in combination. As the filler, one having a small particle size is preferable. When the particle size is large, the surface of the toner image receiving layer is easily roughened.

The silica includes spherical silica and amorphous silica. Silica can be synthesized by a dry method, a wet method, or an airgel method. The surface of the hydrophobic silica particles may be surface-treated with trimethylsilyl groups or silicone. As silica, colloidal silica is preferred. The average particle size of the silica is, for example, 4 to 120 nm, preferably 4 to 120 nm.
Suitably, it is ９０90 nm. The silica is preferably porous. The average pore size of the porous silica is 5
0 to 500 nm is preferred. The average pore volume per mass of the porous silica is preferably, for example, 0.5 to 3 ml / g.

The alumina includes anhydrous alumina and alumina hydrate. As the crystal form of anhydrous alumina, α,
β, γ, δ, ζ, η, θ, κ, ρ or χ can be used. Alumina hydrate is preferred over anhydrous alumina. Monohydrate or trihydrate can be used as the alumina hydrate. Monohydrates include pseudoboehmite, boehmite and diaspore. In trihydrate,
Includes gibbsite and bayerite. The average particle size of alumina is, for example, 4 to 300 nm, preferably 4 to 300 nm.
Suitably, it is 200 nm. Alumina is preferably porous. The average pore diameter of the porous alumina is suitably, for example, 50 to 500 nm. The average pore volume per mass of the porous alumina is preferably, for example, 0.3 to 3 ml / g.

The alumina hydrate can be synthesized by a sol-gel method in which ammonia is added to an aluminum salt solution to cause precipitation, or a method in which alkali aluminate is hydrolyzed. Anhydrous alumina can be obtained by dehydrating alumina hydrate by heating. The filler is preferably 5 to 2000% by mass based on the dry mass of the binder of the layer to be added. The crosslinking agent used in the present invention can be blended to adjust the storage stability of the toner image receiving layer, the thermoplasticity, and the like. As such a crosslinking agent, an epoxy group, an isocyanate group, an aldehyde group,
A compound having two or more active halogen groups, active methylene groups, acetylene groups and other known reactive groups in a molecule is used.

In addition, as the cross-linking agent, a compound having two or more groups capable of forming a bond by a hydrogen bond, an ionic bond, a coordination bond, or the like can be used separately. As a crosslinking agent, a coupling agent for a resin,
Known compounds can be used as a curing agent, a polymerization agent, a polymerization accelerator, a coagulant, a film-forming agent, a film-forming aid, and the like. Examples of the coupling agent include, for example, chlorosilanes, vinylsilanes, epoxysilanes, aminosilanes, alkoxyaluminum chelates, titanate coupling agents, and the like, “Handbook Rubber / Plastic Compounding Chemicals” (Rubber Digest) Publicly-known materials listed in “Company”) can be used.

The toner image receiving layer of the present invention preferably contains a charge controlling agent in order to adjust the transfer and adhesion of the toner and to prevent the toner image receiving layer from being charged and adhered. As the charge control agent, various kinds of charge control agents known in the art can be used. Examples of such a charge controlling agent include cationic surfactants, surfactants such as anionic surfactants, amphoteric surfactants, and nonionic surfactants, as well as polymer electrolytes and conductive metal oxides. Things can be used. For example, quaternary ammonium salts, polyamine derivatives, cation-modified polymethyl methacrylate,
Cationic antistatic agents such as cation-modified polystyrene,
Examples include, but are not limited to, anionic antistatic agents such as alkyl phosphates and anionic polymers, and nonionic antistatic agents such as fatty acid esters and polyethylene oxide.

In the case where the toner has a negative charge, the charge adjusting agent to be mixed in the toner image receiving layer is preferably, for example, a cation or a nonion. Examples of the conductive metal oxide include ZnO, TiO ₂ , and Sn.
O ₂ , Al ₂ O ₃ In ₂ O ₃ , SiO ₂ , MgO, BaO, MoO _{3 and the} like can be mentioned. These conductive metal oxides may be used alone or as a composite oxide thereof.
In addition, the metal oxide may further contain a different element, for example, Al, In, etc. for ZnO, and N for TiO ₂ .
For SnO ₂ such as b, Ta, etc., Sb, Nb, a halogen element and the like can be contained (doped).

The toner image receiving layer of the present invention has a density of 1 × 10 ⁶ to 1
It preferably has a surface electric resistance in the range of × 10 ¹⁵ (under conditions of 25 ° C. and 65% RH). If it is less than 1 × 10 ⁶ Ω, the amount of toner when the toner is transferred to the toner image receiving layer is not sufficient, and the density of the obtained toner image tends to be low. On the other hand, when the surface electric resistance exceeds 1 × 10 ¹⁵ Ω, an excessive charge is generated at the time of transfer, the toner is not sufficiently transferred, the image density is low, and the electrophotographic image receiving material is being processed. Dust is easily attached to the
In addition, misfeeds, double feeds, discharge marks, toner transfer defects, and the like are likely to occur during copying, which is not preferable.

The optimum surface electric resistance of the transparent toner image receiving layer is in the range of 10 ¹⁰ to 10 ¹³ Ω / cm ² , preferably 5 ×
10 ¹⁰ a ^{~5 × 10 12 Ω / cm 2} , the amount of the antistatic agent, the values of surface electrical resistivity may be an amount as falling within this range. The surface electric resistance of the surface opposite to the toner image receiving layer with respect to the support is 5 × 10 ^{8 to} 3.2 × 10 ¹⁰ Ω /.
cm ² , preferably 1 × 10 ⁹ to 1 × 10 ¹⁰ Ω / cm ²
Is suitable. Measurement of surface electric resistance is based on JIS K6
In accordance with 911, the sample was conditioned for 8 hours or more in an environment of a temperature of 20 ° C. and a humidity of 65%, and in the same environment, a current was applied by using R8340 manufactured by Advantest Co. under an applied voltage of 100 V. It is obtained by measuring after one minute.

In the toner image receiving layer of the present invention, a fluorescent whitening agent, a white pigment, a colored pigment, a dye or the like can be used for the purpose of improving the image quality, especially the whiteness. The fluorescent whitening agent is a compound that absorbs near ultraviolet light and emits fluorescence at 400 to 500 nm, and various types of known fluorescent whitening agents can be used without particular limitation. Examples of the optical brightener include K.K. Veen
Rataraman, "The Chemistryo"
f Synthetic Dyes ”, Vol. V, Chapter 8. Specific examples include stilbene compounds, coumarin compounds, biphenyl compounds, benzoxazoline compounds, naphthalimide compounds, and the like. Examples include pyrazoline-based compounds, carbostyryl-based compounds, etc. Examples of such compounds include Whiteflufer PSN, PHR, HCS, P
CS, B, UVITEX-O manufactured by Ciba-Geigy
B and the like.

As the white pigment, the inorganic pigments (titanium oxide, calcium carbonate, etc.) described in the section of the filler can be used. Examples of colored pigments include various pigments described in JP-A-63-44653 and azo pigments (azo lake; carmine 6B, red 2B, insoluble azo; monoazo yellow, disazo yellow, pyrazolo orange, vulcan orange, condensed azo series) Chromophtaleilro, chromophtal red), polycyclic pigments (phthalocyanine-based; copper phthalocyanine blue, copper phthalocyanine green, cyoxazine-based; dioxazine violet, isoindolinone-based; isoindolinone yellow, sulene-based; perylene,
Perinone, flavanthrone, thioindigo, lake pigment (malachite green, rhodamine B, rhodamine G,
Victoria Blue B) and inorganic pigments (oxides, titanium dioxide, red iron oxide, sulfates; precipitated barium sulfate, carbonates)
Precipitated calcium carbonate, silicate; hydrated silicate, anhydrous silicate, metal powder; aluminum powder, bronze powder, zinc dust, carbon black, graphite, navy blue and the like.

As the dye, various known dyes can be used. Examples of the oil-soluble dye include anthraquinone compounds and azo compounds. Specific examples of the water-insoluble dye include C.I. I. Vat Violet 1,
C. I. Vat Violet 2, C.I. I. Vat Violet 9, C.I. I. Vat Violet 13,
C. I. Vat Violet 21, C.I. I. Vat Blue 1, C.I. I. Vat Blue 3, C.I. I. Vat Blue 4, C.I. I. Vat Blue 6, C.I. I. Vat Blue 14, C.I. I. Vat Blue 20, C.I. I. Vat dyes such as Vat Blue 35, C.I. I. Disperse Violet 1, C.I. I. Disperse Violet 4, C.I.
I. Disperse Violet 10, C.I. I. Disperse Blue 3, C.I. I. Disperse Blue 7, C.I.
I. Disperse dyes such as Disperse Blue 58; I. Solvent Violet 13, C.I. I. Solvent Violet 14, C.I. I. Solvent Violet 2
1, C.I. I. Solvent Violet 27, C.I. I.
Solvent Blue 11, C.I. I. Solvent Blue 1
2, C.I. I. Solvent Blue 25, C.I. I. There are oil-soluble dyes such as Solvent Blue 55.

Further, colored couplers used in silver halide photography can be preferably used. The toner image receiving layer of the present invention preferably has high whiteness. In the CIE1976 (L * a * b *) color space, whiteness is represented by L
* The value is preferably 80 or more, more preferably 85 or more, and still more preferably 90 or more. Further, it is preferable that the white color is as neutral as possible. As the white tint, in the L * a * b * space,
The value of (a *) 2+ (b *) 2 is preferably 50 or less,
It is more preferably 18 or less, still more preferably 5 or less. Further, it is preferable that the toner image receiving layer of the present invention has high gloss. As for the glossiness, the 45 degree glossiness is 60 in the entire region from white without toner to black with the maximum density.
Or more, more preferably 75 or more,
More preferably, it is 90 or more. However, the glossiness is 11
It is preferably 0 or less. If it exceeds 110, it becomes metallic luster, which is not preferable as image quality.

The glossiness can be measured based on JIS Z8741. Further, it is preferable that the toner image receiving layer of the present invention has high smoothness. As for the degree of smoothness, the arithmetic average roughness (Ra) is preferably 3 μm or less, more preferably 1 μm or less, further preferably 0.5 μm or less in the entire region from white without toner to black with maximum density. Arithmetic average roughness is JIS B 0601, B
0651 and B0652.

In order to improve the stability of the output image and the stability of the image receiving layer itself, the image receiving sheet of the present invention contains various antioxidants, antioxidants, deterioration inhibitors, ozone deterioration inhibitors, and ultraviolet rays. Absorbers, light stabilizers, preservatives, fungicides and the like may be added. Antioxidants include chroman compounds, coumaran compounds, phenol compounds (eg, hindered phenols), hydroquinone derivatives, hindered amine derivatives, and spiroindane compounds. Also,
As the antioxidant, various antioxidants described in JP-A-61-159644 can be used. Examples of the anti-aging agent include those described in “Handbook of Rubber and Plastic Compounding Chemicals Revised Second Edition” (1993, Rubber Digest Co., Ltd.), pp. 76-121.

Examples of the ultraviolet absorber include benzotriazole compounds (described in US Pat. No. 3,533,794) and 4-thiazolidone compounds (US Pat. No. 33526).
No. 81), a benzophenone compound (Japanese Unexamined Patent Publication No.
No. 6-2784) and an ultraviolet absorbing polymer (described in JP-A-62-260152). Examples of the metal complex include, for example, U.S. Pat. Nos. 4,241,155, 4,245,018 and 4,254,195, JP-A-61-88256, and JP-A-62-174741.
No. 63-199248, JP-A-1-75568
And No. 1-74272. Also, "Handbook of Rubber and Plastic Compounding Chemicals Revised Second Edition" (1993, Rubber Digest) p122
To 137 are also preferably used.

Further, various other known photographic additives can be used for the image receiving sheet of the present invention. For example, as a photographic additive, Research Disclosure Magazine (hereinafter abbreviated as RD) No. 17643 (1)
No. 18716 (November 1979)
And No. 307105 (November 1989), and the relevant portions are summarized below. Type of additive RD17643 RD18716 RD307105 Brightener 24 page 648 page right column page 868 2. Stabilizer page 24-25 page 649 right column page 868-870 3. 3. Light absorber page 25-26 page 649 right column page 873 UV absorber 4. Dye image stabilizer page 25, page 650, right column, page 872 5. Hardening agent page 26 page 651 left column pages 874 to 875 Binder page 26 page 651 left column pages 873 to 874 7. 7. Plasticizers and lubricants Page 27 Page 650 Right column Page 876 8. Coating aid page 26 to page 27 page 650 right column page 875 to 876 Surfactant 10. Antistatic agent, page 27, page 650, right column, pages 876 to 877 Matting agent 878-879

Protective Layer The electrophotographic image-receiving material of the present invention is used for the purpose of protecting the surface, improving the storage stability, improving the handleability, imparting writability, improving the equipment passing property, imparting the anti-offset property, and the like. A protective layer can be provided on the surface of the toner image receiving layer. The protective layer may be a single layer or may be composed of two or more layers. Various thermoplastic resins, thermosetting resins, and the like can be used as a binder for the protective layer. Preferably, the same type as the toner image receiving layer is used. However,
The thermodynamic characteristics, electrostatic characteristics, and the like need not be the same as those of the toner image receiving layer, and can be optimized.

The protective layer may contain various additives as described above which can be used in the toner image receiving layer. In particular, the protective layer may contain other additives, for example, a matting agent, together with the release agent used in the present invention. In addition, the examples of the additives described below can be used for other than the protective layer. The outermost surface layer of the electrophotographic image-receiving material of the present invention (e.g., when a surface protective layer is used, the surface protective layer and the like) preferably has good compatibility with the toner from the viewpoint of fixability. . Specifically, the contact angle with the molten toner is preferably, for example, 0 to 40 degrees.

Matting agents Various known matting agents can be used. Solid particles used as a matting agent can be classified into inorganic particles and organic particles. Inorganic matting agents include oxides (eg, silicon dioxide, titanium oxide, magnesium oxide, aluminum oxide), alkaline earth metal salts (eg, barium sulfate,
Includes calcium carbonate, magnesium sulfate), silver halide (eg, silver chloride, silver bromide) and glass. Regarding the inorganic matting agent, West German Patent 2,529,321, British Patent 760775, British Patent 1,260,772, and US Pat.
No. 01905, No. 2192241, No. 3053662
No., No. 3062649, No. 3257206, No. 33
No. 22555, No. 3353958, No. 3370951
No. 3411907, No. 3437484, No. 35
No. 23022, No. 3615554, No. 3635714
Nos. 3769020, 40212145, 40
No. 29504 is described in each specification.

As the organic matting agent, starch, cellulose ester (eg, cellulose acetate propionate), cellulose ether (eg, ethyl cellulose)
And synthetic resins. The synthetic resin is preferably water-insoluble or hardly water-soluble. Examples of water-insoluble or poorly water-soluble synthetic resins include poly (meth) acrylates (eg, polyalkyl (meth) acrylate, polyalkoxyalkyl (meth) acrylate, polyglycidyl (meth) acrylate), poly (meth) Includes acrylamide, polyvinyl ester (eg, polyvinyl acetate), polyacrylonitrile, polyolefin (eg, polyethylene), polystyrene, benzoguanamine resin, formaldehyde condensation polymer, epoxy resin, polyamide, polycarbonate, phenolic resin, polyvinyl carbazole and polyvinylidene chloride . Combinations of the monomers used in the above polymers may be used as copolymers.

In the case of a copolymer, a small amount of a hydrophilic repeating unit may be contained. Examples of the monomer that forms a hydrophilic repeating unit include, for example, acrylic acid, methacrylic acid, α, β-unsaturated dicarboxylic acid, hydroxyalkyl (meth) acrylate, sulfoalkyl (meth) acrylate, styrene sulfonic acid, and the like. Is included. Regarding the organic matting agent, British Patent No. 1055713, U.S. Pat. Nos. 1,939,213, 2,221,873 and 2,268.
No. 662, No. 2322037, No. 2376005,
No. 2391181, No. 2701245, No. 2992
No. 101, No. 3079257, No. 3262782,
No. 3434946, No. 3516832, No. 3539
No. 344, No. 3591379, No. 3754924,
No. 3,767,448, JP-A-49-1068.
No. 21 and No. 57-14835 are described in each specification or gazette. Two or more types of solid particles may be used in combination. The average particle size of the solid particles is, for example, 1 to 100 μm, preferably 4 to 30 μm. The amount of the solid particles used is 0.01 to 0.5 g / m ² , preferably
Suitably, it is 0.02 to 0.3 g / m ² .

Back Layer The electrophotographic image-receiving sheet of the present invention has an image opposite to the toner image-receiving layer with respect to the support for the purpose of imparting back-side output aptitude, improving the back-side output image quality, improving curl balance, and improving machine passability. A back layer can be provided on the side. The back layer may have the same configuration as that of the toner image receiving layer side in order to improve the two-sided output suitability. Various additives described above can be used for the back layer. As such an additive, it is particularly appropriate to add a matting agent, a charge controlling agent and the like. The back layer may be composed of one layer, or may be composed of two or more layers. In the case where a releasing oil is used for the fixing roller or the like in order to prevent offset at the time of fixing, the back layer may have oil absorbency.

Optional Other Layers The electrophotographic image receiving material of the present invention may have an adhesion improving layer for the purpose of improving the adhesion between the support and the toner image receiving layer. Various additives described above can be blended in the adhesion improving layer. It is particularly preferable to use a crosslinking agent. In the electrophotographic image-receiving material of the present invention, a cushion layer can be provided between the adhesion improving layer and the toner image-receiving layer in order to improve the toner receptivity. Further, the image receiving material for electrophotography of the present invention may have an intermediate layer in addition to the above-mentioned various layers. For example, the intermediate layer is between the support and the adhesion improving layer, between the adhesion improving layer and the cushion layer, between the cushion layer and the toner image receiving layer, between the toner image receiving layer and the storage stability improving layer, and the like. Can be arranged. Of course, in the case of an electrophotographic image receiving material comprising a support, a toner image receiving layer, and an intermediate layer, the intermediate layer can be present, for example, between the support and the toner image receiving layer.

Color Electrophotographic Toner The electrophotographic image receiving material of the present invention can be used for printing or copying.
Used in combination with toner or toner particles. Generally, the toner is mainly composed of a colorant and a binder resin. The colorant used in the toner is not particularly limited as long as it is known, and various colorants can be used. Such colorants include, for example, carbon black, aniline blue, calcoil blue, chrome yellow, ultramarine blue, Dupont oil red, quinoline yellow, methylene blue chloride, phthalocyanine blue, malachite green oxalate, lamp black, rose Bengal, C.I. I. Pigment Red 48: 1, C.I. I. Pigment Red 122, C.I. I. Pigment Red 57: 1, C.I. I. Pigment Yellow 97, C.I.
I. Pigment Yellow 12, C.I. I. Pigment
Yellow 17, C.I. I. Pigment Blue 15: 1,
C. I. Pigment Blue 15: 3 and the like are exemplified as typical examples. The content of the colorant is suitably, for example, 2 to 8% by mass based on the mass of the toner. When the content of the colorant is less than 2% by mass, the coloring power tends to be weak, and when the content is more than 8% by mass, the transparency of the color toner tends to deteriorate.

Examples of the binder resin used in the toner include styrenes such as styrene and chlorostyrene, monoolefins such as ethylene, propylene, butylene and isoprene, vinyl acetate, vinyl propionate, and the like.
Vinyl esters such as vinyl benzoate and vinyl butyrate, methyl acrylate, ethyl acrylate, butyl acrylate, dodecyl acrylate, octyl acrylate, phenyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methacrylic acid Α such as dodecyl
-Homopolymers and copolymers such as methylene aliphatic monocarboxylic esters, vinyl ethers such as vinyl methyl ether, vinyl ethyl ether and vinyl butyl ether, and vinyl ketones such as vinyl methyl ketone, vinyl hexyl ketone and vinyl isopropenyl ketone. Can be exemplified.

Particularly typical binder resins include polystyrene resin, polyester resin, styrene-alkyl acrylate copolymer, styrene-alkyl methacrylate copolymer, styrene-acrylonitrile copolymer, styrene-butadiene copolymer, Styrene-maleic anhydride copolymer, polyethylene resin and polypropylene resin can be mentioned. Further, polyurethane resin, epoxy resin, polyamide resin, modified rosin and the like can be mentioned. Among these resins, it is particularly preferable to use the same polyester resin as that used for the toner image receiving layer in the electrophotographic image receiving material.

The binder resin used in the present invention preferably has the same physical properties as those of the resin used for the toner image receiving layer in the electrophotographic image receiving material of the present invention. Specifically, the binder resin of the toner is 150 ° C.
In the above, those having a storage elastic modulus of 10 to 300 Pa measured at an angular frequency of 10 rad / sec are preferable. The binder resin used in the present invention is disclosed in JP-A-8-30506.
It is preferable that the binder resin has a sharp melt property as disclosed in Japanese Patent Application Laid-Open Publication No. 7-1995. The average particle size of the toner that can be used in combination with the electrophotographic image receiving material of the present invention is, for example, 3 to 15 μm, and preferably 4 to 8 μm. Further, the storage elastic modulus G ′ of the toner itself at 150 ° C. (angular frequency 10r
(ad / sec) is suitably 10 to 200 Pa.

The electrophotographic image-receiving material of the present invention may be combined with the electrophotographic image-receiving material.
An external additive may be added to the used toner.
As the external additive, inorganic powder and organic particles are used.
The inorganic particles are SiO_TwoAnd TiO_Two , Al_Two O_Three , Cu
O, ZnO, SnO_Two , Fe _Two O_Three , MgO, BaO,
CaO, K_Two O, Na_Two O, ZrO_Two , CaO ・ SiO
_Two , K_Two O ・ (TiO_Two )_n, Al_Two O_Three ・ 2SiO
_Two , CaCO_Three , MgCO_Three , BaSO_Four , MgSO_Four 
And the like. Also, as the organic particles,
Powders of fatty acids or derivatives thereof, metal salts thereof, etc.
Resin such as fluorine resin, polyethylene resin and acrylic resin
Powder can be used. Average particle size of these powders
Is, for example, 0.01 to 5 μm, preferably 0.1 to 2 μm
Something is appropriate.

Image Forming Apparatus and Method The method of forming an image on the electrophotographic image receiving material of the present invention is not particularly limited. It can be applied to various electrophotographic methods. For example, a color image can be preferably formed on the electrophotographic image receiving material of the present invention. The formation of a color image can be performed using an electrophotographic apparatus capable of forming a full-color image. A typical electrophotographic apparatus includes an image receiving sheet transporting section, a latent image forming section, and a developing section disposed in the vicinity of the latent image forming section. And a toner image intermediate transfer unit adjacent to the image receiving sheet transport unit.

[0101]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the scope of the present invention is not limited to these Examples. In the following Examples and Comparative Examples, “%” and “parts” are based on mass.

Examples 1 to 14 and Comparative Examples 1 to 6 <Support> A water-dispersible anatase type titanium dioxide was prepared in the same manner as in 1.1.
A high-quality paper (basal weight of pulp structure: 160 g / m ² ) manufactured as shown in Table 1 with a center line average roughness internally added to have a g / m ² content as a base paper, High density polyethylene (PE) (MI = 8 g / 10 min, density 0.
950 g / cm ³ ) and low density polyethylene (PE) (MI
= 7 g / 10 min, density of 0.923 g / cm ³ )
3 (weight ratio) by extrusion coating method (3
10 ° C.) to form a back polyethylene (PE) layer with a thickness of 15 μm. Then, on the surface of the above high quality paper,
High density polyethylene (PE) (MI = 10 g / 10 min, density 0.950 g / cm ³ ) and low density polyethylene (PE)
(MI = 7 g / 10 min, density 0.923 g / cm ³ ) and a 7/3 (weight ratio) blend (containing 2.0 g / m ^{2 of} anatase-type titanium dioxide) was similarly extruded by a coating method. Extruded to form a surface polyethylene (PE) layer with a thickness of 13 μm.

Table 1

After the PE layers on the front and back surfaces of the support shown in Table 1 were subjected to corona discharge treatment, the following undercoat layer composition was dried on the front and back surfaces with a wire coater to a thickness of 0.1 μm. It is coated and dried to provide an undercoat layer on the front and back sides, and the back layer composition described below is coated on the back side so that the coating amount after drying is 4.5 g / m ² , After drying, a back layer was provided. << Composition for surface undercoat layer >> Gelatin 5g Water 95g << Back layer composition >> Polyester resin (Vylonal MD-1200 manufactured by Toyobo) 100g Matting agent (Eposter L15 Nippon Shokubai) 30g Ethanol 60g Water 200g

The following composition A or B for a toner image receiving layer was coated on the above-mentioned surface undercoat layer using a release agent shown in Table 2 with a wire coater so that the coating amount after drying was 15 g / m 2.
Coated adjusted to ^2, and dried, Examples 1-14
And Comparative Examples 1 to 4 were prepared. << Composition A for Toner Image Receiving Layer >> Polyester resin (Tuffton U-5, manufactured by Kao) 100 g Release agent (Table 2) xg Triphenyl phosphate 9 g Titanium dioxide (Taipec (registered trademark) A-220, manufactured by Ishihara Sangyo) 15 g of methyl ethyl ketone (hereinafter abbreviated as MEK) 160 g

{Composition B for Toner Image Receiving Layer} Water-dispersed polyester resin (KZA-7049, manufactured by Unitika) 100 g Release agent (Table 2) xg Titanium dioxide (Taipec (registered trademark) A-220, manufactured by Ishihara Sangyo) 0.9g methanol 30g water 10g

Table 2

Table 2 (continued)

The produced electrophotographic image-receiving sheet was cut into A4 sheets. Then, it was set on a color laser printer (Docuprint C-620) manufactured by Fuji Xerox, and an image from a computer was printed. The image is white,
Gray (R = G = B = 50% of the image), black, and female portraits were printed.

Evaluation: Each image was printed 20 sheets at a time, and all the sheets passed were evaluated as ○, those where 1-5 sheets could not be passed were indicated as Δ, and those where 6 or more sheets could not be passed were indicated as ×, the results are shown in Table 2. Indicated. Further, the surface state of the toner image receiving layer before printing was visually confirmed. Table 2 shows that a sample exhibiting a good glossy surface was evaluated as ○, that there was slight unevenness, but not noticeable after printing, as Δ, and that there was unevenness after printing, as X. Also,
Compare the feel to the color photo made by Fuji Photo Film created in the same A4 size for 50 people. The results are shown in Table 2 as “×” when the number is 6 or more. Further, in Examples 1 to 14, the obtained print was
The paper passing property, gloss, and feel were all good.

In addition, after printing once, it was possible to print again on the back surface. In addition, commercially available color laser printers, specifically, Fuji Xerox full color laser printers (DocuColor 1250CP,
A color 629, color laser window CLW-3320P
S), XEROX color copiers (DocuColor 575)
0), Seiko Epson LP-8000C, Casio Electronics COLOR PAGEPRESTO N4-ST, Canon COLOR LASER
SHOT LBP-2030, magi manufactured by QMS Japan
color 2, Konica Color LaserBit KL-2010, Sharp JX-8200, Hitachi BEAMSTAR-RW, Minolta
When printed with Color Page Pro PS, all samples could be passed and the same results as in Table 2 were obtained.
On the other hand, in Comparative Examples 1 and 2 in which the center line average roughness on the surface of the support exceeded 5 μm, the gloss was inferior. Further, in Comparative Examples 3 and 4 in which the release agent was not blended, the paper passing property was inferior.

Examples 15 to 25 and Comparative Examples 5 to 6 In the same manner as in Examples 1 to 14 and Comparative Examples 1 to 4, using the supports shown in Table 1, an undercoat layer was formed on the front surface, and a back layer described below was formed on the back surface. The composition C for the toner image receiving layer described below was applied by a wire coater so as to adjust the coating amount after drying to 15 g / m ² , and dried. Then, the following protective layer composition D as the uppermost layer was adjusted on a toner image-receiving layer by a wire coater such that the coating amount after drying was 1 g / m ² , and the coating was dried. 25 and Comparative Examples 7 and 8 were prepared.

{Composition C for Toner Image Receiving Layer} Polyester resin (Tuffton U-5, manufactured by Kao) 100 g Triphenyl phosphate 9 g Titanium dioxide (Taipec (registered trademark) A-220, manufactured by Ishihara Sangyo) 15 g Methyl ethyl ketone (hereinafter referred to as “methyl ethyl ketone”) , MEK) 160 g {Composition D for outermost (protective) layer} Aqueous dispersion resin (Table 3) zg Release agent (Table 3) ug Water 400 g

Table 3

Evaluation was performed in the same manner as in Examples 1 to 14 and Comparative Examples 1 to 4, and the results are shown in Table 3 below. Similar results were obtained.

Table 3 (continued)

Examples 26 to 33 Supports a-1 and a-2 having the following layer constitution were prepared. The support was prepared in the same manner as in the case of the support used in Example 1.

[0118]

[0119]

The support a-1 or a-2 and the other support a-3 to a-6 shown below were prepared in accordance with Example 26 as shown in Table 4 below.
In Examples 29 to 29, after performing corona treatment on both surfaces, the composition C for the toner image receiving layer used above (containing no release agent) or the composition E or F for the toner image receiving layer shown below (release agent) In Examples 28, 30, and 33, a protective layer G was further coated on the toner image-receiving layer. The compositions C and EF of the toner image receiving layer were coated and dried with a wire coater so that the coating amount after drying was adjusted to 15 g / m ² .
The composition G for the outermost (protective) layer was similarly coated and dried by a wire coater so that the coating amount after drying was 1 g / m ² .

{Composition E for Toner Image Receiving Layer} Polyester resin (Tuffton U-5, manufactured by Kao) 100 g Cymac US-380 (silicon resin (release agent), manufactured by Toa Gosei) 15 g triphenyl phosphate 9 g titanium dioxide (Taipec (registered trademark) A-220, manufactured by Ishihara Sangyo) 15 g Methyl ethyl ketone (hereinafter abbreviated as MEK) 160 g

{Composition F for Toner Image Receiving Layer} Water-dispersed polyester resin (KZA-7049, manufactured by Unitika) 100 g Cellosol 524 (Carnaha Wax (release agent), manufactured by Chukyo Yushi) 30 g Titanium dioxide (Taipek (registered trademark)) A-220, manufactured by Ishihara Sangyo) 0.9 g methanol 30 g water 10 g

<< Composition G for the outermost (protective) layer >> Pesresin A-515GB (water-dispersed polyester resin, manufactured by Takamatsu Oil & Fats) 400 g SH7028A (dimethylsiloxane (release agent), manufactured by Toray Tow Corning Silicone) 20 g 400g of water

Table 4 Note) support a-3: OK topcoat 157 g / m ² (from Oji Paper Co., Ltd.) (surface center line average roughness 0.3 [mu] m) support a-4: mirror coat gold 157 g / m ² (manufactured by Oji Paper Co., Ltd.) (surface Support a-5: Mirror coated platinum 174 g / m ² (manufactured by Oji Paper) (Surface center line average roughness 0.3 μm) Support a-6: Super mirror coated platinum 174 g / m ² (Manufactured by Oji Paper) (Surface centerline average roughness 0.1 μm) In the same manner as in Examples 1 to 25, the properties of the obtained electrophotographic image-receiving material were evaluated. The results are shown in Table 4 below.

Table 4 (continued)

[0126]

According to the present invention, it is possible to obtain an electrophotographic image receiving material which can be passed through an oilless machine without a fixing oil, has excellent glossiness, and has a photographic-like feel.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification code FI Theme coat ゛ (Reference)

Claims (4)

[Claims] 1. An electrophotographic image-receiving material comprising a support and a toner image-receiving layer containing a thermoplastic resin and any other additional layer provided thereon. 0.01 to 5 μm, wherein the toner image receiving layer or any other additional layer contains a release agent selected from the group consisting of a silicon compound, a fluorine compound and a wax. An image receiving material for electrophotography, comprising: 2. The method according to claim 1, wherein the support is coated paper.
2. The image receiving material for electrophotography according to item 1. 3. The electrophotographic image-receiving material according to claim 1, wherein the release agent is blended in any layer on the toner image-receiving layer side with respect to the support. 4. The electrophotographic image receiving material according to claim 3, wherein the release agent is blended in the outermost layer on the toner image receiving layer side with respect to the support.