JPH07110642A - Method for removing image forming substances from image preserving body and device therefor - Google Patents

Abstract

PURPOSE:To satisfactorily remove image forming substances imdependent of the quantity of the image forming substances stuck on an image preserving body. CONSTITUTION:Toner is removed from the top side of a transferred paper sheet 10 by using a 3rd peeling member 302c having the highest sticking capacity when the quantity of toner stuck on the top side of the transferred paper sheet 10 is less than a specific value, and further successively using a 1st peeling member 302a having the smallest sticking capacity, then a 2nd peeling member 302b having the intermediate sticking capacity and finally the 3rd peeling member 302c when the quantity of toner stuck on the top side of the transferred paper sheet 10 is a specific value or above. Thus, when the image density is high, stresses applied on the transferred paper sheet 10 at the time of peeling are made smaller as compared with the case where toner is entirely removed at one time of peeling operation, thereby completely removing the toner from the top of the transferred paper sheet 10, while minimizing damage to the surface of the transferred paper sheet 10 without peeling fibers on the surface of the transferred paper sheet 10 together with toner therefrom.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to transfer of an image forming substance from a transfer sheet, for example, as an image holding member to which the image forming substance is stably attached by an image forming apparatus such as a copying machine, a facsimile, a printer or a printing machine. The present invention relates to a method and an apparatus for removing an image-forming substance from an image carrier by applying an instability liquid that makes the adhesion to a sheet unstable to a transfer sheet to remove the image-forming substance.

[0002]

2. Description of the Related Art Heretofore, various methods and apparatuses for removing an image-forming substance such as toner from a recording sheet as a recorded transfer sheet have been known. For example, as one using a solvent, Japanese Patent Application Laid-Open No. 1-1
Japanese Patent Publication No. 01576 discloses a method for removing an image forming substance in which a sheet having a toner attached thereto is dipped in a soluble solvent of a toner resin and ultrasonic vibration is applied to release the toner dissolved in the solvent from the surface of the sheet. . In addition, JP-A-4-30
No. 0395 discloses that a solvent is attached to a printed portion of waste paper by a method such as dipping, spraying or coating to dissolve the toner, and the dissolved toner is washed, air suction, contact with an adsorbent,
There is disclosed a method of removing an image-forming substance, which comprises removing by a method such as mechanical peeling or electrostatic adsorption, and then finishing paper such as drying and stretching.

On the other hand, as one not using a solvent, for example, in Japanese Patent Application Laid-Open No. 2-255195, a heat-meltable ink or a heat-meltable ink placed on a printed material coated with a release agent on a support by an electrophotographic method or a thermal transfer method is used. A method for removing an image forming substance in which toner is adhered to the ink peeling body and removed by stacking the ink peeling body on the printed body and passing the toner between the heating roller and the pressure roller and cooling the peeled ink peeling body. Is disclosed. Further, in Japanese Unexamined Patent Publication No. 4-64472, at least an endless sheet having a heat-melting resin on the surface, a heat roller and a cooling roller for supporting and rotating the endless sheet, and a paper having a release treatment on its surface (erasable paper) There is disclosed an eraser including a pressing roller that presses against a softened or melted heat-melting resin, and a drive unit that moves these in conjunction with each other. In addition, JP-A-4-829
In Japanese Patent Publication No. 83, 83, two rollers provided in parallel to rotate in pressure contact with each other to pass the paper through the pressure contact point, a heater for heating at least one of the two rollers, and a roller passing through the pressure contact point A scraper for separating the paper from the roller,
An image forming substance removing device is disclosed, which comprises a peeling device that removes the image forming substance attached to the roller from the roller.

[0004]

By the way, the above-mentioned solvent-free method and apparatus remove the image-forming substance from a recorded transfer sheet on which an image is recorded on a normal paper having paper fibers exposed on the surface. When used for, for example, in an electrophotographic fixing process, an image forming substance mainly composed of a heat-fusible resin is fused to a transfer sheet, so that the image forming substance is firmly fixed to the fibers on the surface of the transfer sheet. Therefore, when the image-forming substance is removed, the paper fibers on the surface are stripped together with the image-forming substance and the paper quality is damaged. In particular, in order to improve the removability of the image-forming substance, when heat or pressure is applied to the above ink peeling body, the endless sheet or the roller, depending on various conditions, the space between the image-forming substance and the transfer sheet may be reversed. In some cases, the fixability was increased and removal was difficult.

Therefore, the present applicant previously applied water as a destabilizing agent, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and a surfactant and a water-soluble polymer to a recorded transfer sheet. Image formation in which at least one kind of water or aqueous solution selected from the group consisting of aqueous solutions containing is held, and an image forming substance is heat-bonded or pressure-bonded to the peeling member by interposing a peeling member and peeled from the transfer sheet. A substance removal method has been proposed (for example, Japanese Patent Application No. 4-25
5916). According to this, only the image forming substance can be removed without relatively damaging the paper quality of the transfer sheet.

However, according to this method, there is a problem that the toner may not be satisfactorily removed from the transfer sheet depending on the toner density (toner adhesion amount) on the transfer sheet. For example, when the toner density on the transfer sheet is high (when the amount of toner on the transfer sheet is large), when the toner is removed from the transfer sheet by using a peeling member having a large adhesion ability, the surface of the transfer sheet becomes fibrous. in the case of,
There is a problem that the fibers are damaged due to the excessive peeling of the toner.

The present invention has been made in view of the above problems, and an object of the present invention is to satisfactorily remove an image-forming substance regardless of the amount of the image-forming substance deposited on the image carrier.
A method and apparatus for removing an image-forming substance from an image carrier.

[0008]

In order to achieve the above object, the invention of claim 1 is an image carrier for removing an image forming substance from an image carrier having an image forming substance stably attached to the surface thereof. In the method for removing an image forming substance from the above, an adhesion amount detecting step of detecting an adhesion amount of the image forming substance on the surface of the image carrier,
Of the at least two types of peeling members, which have an adhesion force larger than the adhesion force between the surface and the image-forming substance to the image-forming substance on the image carrier, and have different adhesion abilities,
A peeling step of selecting the peeling member according to the amount of the image forming substance adhered, bringing the peeling member into contact with the image forming substance on the image holding body, and then separating the peeling member from the image holding body. is there.

According to a second aspect of the present invention, there is provided a method of removing an image-forming substance from an image-holding member, which removes the image-forming substance from the image-holding member having the image-forming substance stably attached to the surface thereof. An adhesion amount detecting step of detecting the adhesion amount of the image forming substance on the surface, and when the adhesion amount of the image forming substance on the image carrier is detected to be a predetermined amount or more in the adhesion amount detecting step, the image is detected. Of the at least two types of peeling members having a larger adhesive force than the adhesive force between the surface and the image forming substance with respect to the image forming substance on the holding body, and having a smaller adhesive force, the adhesive force is smaller. After sequentially contacting the image forming substance on the image holding member from the peeling member to the peeling member having a large adhesion ability, the image forming substance is separated from the image holding member, and the image forming substance on the image holding member is separated in the adhesion amount detecting step. If it is detected that the adhered amount is less than the predetermined amount, at least Among types of stripping members, a large peeling member adheres ability after contact with the image forming substance on the image holding member, is characterized in that it has a separation step of separating from the image holding member.

The invention of claim 3 is the same as claim 1 or 2.
In the method for removing an image-forming substance from an image-holding member, the surface of the image-holding member is stabilized on the image-holding member having a fibrous surface prior to contacting the peeling member with the image-forming substance on the image-holding member. Then, an adhesion destabilizing step is performed to make the adhesion state of the image forming substance adhered to the surface and the surface unstable.

According to a fourth aspect of the present invention, there is provided an apparatus for removing an image-forming substance from an image-holding member, which removes the image-forming substance from the image-holding member having the image-forming substance stably attached to the surface thereof. An adhesion amount detection means for detecting an adhesion amount of the image forming substance on the surface, and an adhesion force for the image forming substance on the image holding member, which is larger than an adhesion force between the surface and the image forming substance, Of at least two types of peeling members having different adhesion abilities and a peeling member according to the adhesion amount of the image forming substance are contacted with the image forming substance on the image holding body, and then peeled off from the image holding body. A member selecting means is provided.

According to a fifth aspect of the present invention, in the apparatus for removing an image-forming substance from an image carrier according to the fourth aspect, the amount of the image-forming substance deposited on the image carrier by the amount-of-adhesion detecting means is equal to or more than a predetermined amount. When it is detected that among the above-mentioned at least two types of peeling members, a peeling member having a small adhesion ability is sequentially contacted with an image forming substance on the image holding body from a peeling member having a large adhesion ability, and then the peeling member is removed from the image holding body. The peeling member selecting means is configured to be separated from each other.

According to a sixth aspect of the present invention, in the apparatus for removing an image-forming substance from an image carrier according to the fourth aspect, the amount of adhesion of the image-forming substance on the image carrier is less than a predetermined amount by the amount-of-adhesion detecting means. If it is detected that, of the at least two types of peeling members, a peeling member having a large adhesion ability is brought into contact with the image forming substance on the image holding member, and then the peeling member is separated from the image holding member. It is characterized in that a member selecting means is configured.

According to a seventh aspect of the invention, in the apparatus for removing an image-forming substance from the image carrier according to the fourth aspect, a softening means for softening the image-forming substance when removing the image-forming substance from the surface is provided. It is characterized by.

According to the invention of claim 8, in the apparatus for removing an image-forming substance from an image carrier according to claim 4, after removing the image-forming substance from the surface, the smoothness and humidity of the image carrier are imaged. It is characterized in that a restoring means which is substantially the same as that before the removal of the forming substance is provided.

The invention of claim 9 relates to claims 4, 5,
In the image forming substance removing device from the image holding member of 6, 7 or 8, the surface composed of fibrous material and the image are formed before the peeling member is brought into contact with the image forming substance on the image holding member. It is characterized in that an adhesion destabilizing means for destabilizing the adhesion with the forming substance is provided.

According to a tenth aspect of the invention, in the apparatus for removing an image-forming substance from an image carrier according to the ninth aspect, the destabilizing means for adhesion is stabilized between the fibrous surface and the image-forming substance. It is characterized in that it is constituted by a destabilizing substance impregnating means for impregnating the image holding member with the destabilizing substance for destabilizing the adhered state.

[0018]

According to the present invention, in at least two kinds of peeling members having different adhesion ability to the image forming substance on the image carrier, the image forming substance of the image forming substance on the image carrier is different. After contacting the surface of the peeling member according to the amount of adhesion, the surface is separated from the image carrier, and the image forming substance adhered to the surface of the peeling member is peeled from the image carrier.

Particularly, in the inventions of claims 2, 5 and 6, when the adhesion amount of the image-forming substance on the image carrier is detected to be less than a predetermined amount, at least 2 of the above-mentioned adhesion capabilities are different.
After contacting a peeling member having a large adhesion ability among the types of peeling members with the image forming substance on the image carrier, the image forming substance adhered to the surface of the peeling member is separated from the image carrier.
The image carrier is peeled off.

When it is detected that the amount of the image-forming substance deposited on the image carrier is equal to or greater than a predetermined amount, the peeling member having the smaller adhesion ability among the at least two types of peeling members having different adhesion capabilities is image-held. After contact with the image-forming substance on the body,
The image forming substance adhered to the surface of the peeling member is separated from the image carrier, and is peeled from the image carrier. Here, since the peeling member has a small ability to adhere to the image forming substance, a part of the image forming substance on the image holding member is peeled off from the image holding member, and the remaining image forming substance remains on the image holding member. Remain.
Then, after contacting the image forming substance partially remaining on the image carrier with a peeling member having a large adhesion ability among the at least two types of peeling members having different adhesion capabilities,
The image forming substance adhered to the surface of the peeling member is separated from the image carrier, and is peeled from the image carrier. Here, since the peeling member has a large ability to adhere to the image forming substance, the image forming substance that has not been peeled by the previous peeling member is peeled off from the image carrier.

Particularly, in the invention of claim 7, when the image forming substance is removed from the surface of the image holding member by the softening means, the image forming substance is softened so that the image forming substance is removed from the surface of the image holding member. Make it easy to leave. As the softening means, for example, when the image forming substance is a heat softening substance, a heating means can be used.

Particularly, in the invention of claim 8, after the image forming substance is removed from the surface of the image holding member by the restoring means, the smoothness and humidity of the image holding member are made substantially the same as those before the image forming substance is removed. . As the restoring means, for example, a roller pair including a heater for drying water or an aqueous solution, or a water supply roller pair including a water absorbing member that absorbs water or an aqueous solution can be used.

In particular, in the third, ninth and tenth aspects of the invention, the fibrous surface of the image carrier and the image forming substance are contacted with each other before the peeling member is brought into contact with the image forming substance on the image carrier. Destabilize the adhesion of. For example, an adhesion destabilizing substance that destabilizes the adhesion between the surface and the image forming substance is applied to the image carrier on which the image forming substance is stably adhered on the surface to destabilize the adhesion. As this destabilizing substance,
For example, at least one kind of water or an aqueous solution selected from the group consisting of water, an aqueous solution containing a surfactant, an aqueous solution containing a water-soluble polymer, and an aqueous solution containing a surfactant and a water-soluble polymer can be used. .

[0024]

EXAMPLES Hereinafter, the present invention will be described with reference to the image holding method for removing a heat-melting toner (hereinafter, referred to as a toner) as an image forming substance from a transfer paper as an image holding member on which an image is formed by a transfer type electrophotographic copying machine. An embodiment applied to a device for removing an image forming substance from a body (hereinafter referred to as a toner removing device) will be described. (Hereafter, margin)

FIG. 1 is a front view showing a schematic structure of the toner removing device according to the first embodiment. First, the overall outline will be described. In this toner removing device, a sheet feeding unit 1 for separating and feeding the transfer sheets 10 on which toner images are formed one by one.
And a liquid applying unit / toner peeling unit 6 for supplying a liquid to the transfer paper 10 sent from the paper feeding unit 1 and peeling and removing the toner from the transfer paper 10 supplied with the liquid,
A drying unit 4 for drying the transfer paper 10 from which the toner has been removed, an identification mark giving unit 30 as an identification mark giving means for giving an identification mark to the transfer paper 10 conveyed from the drying unit 4 as necessary, and an identification A sorting unit 40 for sorting the transfer paper 10 from the mark giving unit 30 and the transfer paper 1 sorted by the sorting unit 40
And a paper receiving unit 5 for receiving 0.

Next, each unit 1, 4, 5, of the illustrated example
6, 30, and 40 will be described. Paper feeding unit 1
Feeds the transfer paper 10 on the manual feed stand 101 to the paper feed roller 102.
Paper is fed by the pair of separating rollers 103 to separate the multi-fed sheets, and only one transfer sheet 10 is fed by the pair of resist rollers 104 for timing adjustment and skew correction. The specific configuration and operation are the same as those of the paper feeding mechanism in the electrophotographic copying machine, and therefore detailed description will be omitted.
Further, the sheet feeding unit 1 has a transfer sheet state sensor 105 for detecting the state of the transfer sheet 10 fed by the sheet feeding roller 102 and the separation roller pair 103. The transfer paper state sensor 105 is composed of a CCD sensor or the like, and reads the image area ratio on the transfer paper 10, the number of reuses of the transfer paper 10, the presence or absence of a seal image such as a red stamp, and the like.

The liquid applying unit / toner peeling unit 6 is equipped with a paper holding drum 601 which clamps the tip of the transfer paper with a clamp claw 602 and holds it on the peripheral surface to rotate, and near the drum 601 the drum 601. A liquid application unit for supplying liquid to the transfer paper 10 held on the peripheral surface is provided.

The liquid applying section applies a penetration promoting liquid 21 to the transfer paper 10 on the paper holding drum 601 as a penetration promoting agent for promoting the penetration of the treatment liquid 20 into the transfer paper 10 which will be described later. A process for applying the treatment liquid 20 as a destabilizing agent to the liquid applying section 2a and the transfer paper 10 to make the adhesion state of the toner stably attached to the surface of the transfer paper and the surface thereof unstable. It is composed of a liquid applying section 2b. The permeation promoting liquid applying section 2a and the processing liquid applying section 2b are
Liquid containers 201a, 201b, coating rollers 207a,
b, liquid supply members 246a and 246b for supplying liquid from the liquid container to the application roller by a capillary phenomenon or the like.
Further, the coating rollers 207a and 207b are connected to the paper holding drum 60.
It is configured so as to be movable so as to come into contact with or separate from the surface of 1, and the movement is controlled by the controller. The liquid supply members 246a and 246b are made of a liquid-supplying material such as felt, and supply the liquid in the liquid containers 201a and 201b to the coating roller by a capillary phenomenon or the like.

Here, as the treatment liquid 20, water, an aqueous solution containing a water-soluble polymer, an aqueous solution containing a surfactant,
At least one kind of water or an aqueous solution selected from the group consisting of an aqueous solution containing a water-soluble polymer and a surfactant can be used. Further, the water or the aqueous solution may contain a predetermined organic solvent. Moreover, as the processing liquid 20, only an organic solvent can be used. Further, as the permeation promoting liquid 21, at least one aqueous solution selected from the group consisting of an aqueous solution containing a surfactant and an aqueous solution containing a water-soluble polymer and a surfactant can be used.

Examples of the water-soluble polymer include starchy substances (branch starch, potato starch, tapioca starch, wheat starch, corn starch, etc.),
Mannan (konjac, etc.), seaweed (Funori, agar, sodium alginate, etc.), plant mucilage (troloois,
Gum tragacanth, gum arabic, etc.), mucilage by microorganisms (dextran, levan, etc.), protein (glue,
Gelatin, casein, collagen, etc.) natural polymers, cellulose-based (viscose, methylcellulose, ethylcellulose, hydroxyethylcellulose, carboxymethylcellulose, etc.), starch-based (soluble starch, carboxymethyl starch, dialdehyde starch) semi-synthetic polymers, Examples thereof include synthetic polymers, but are not limited thereto.

Examples of the above-mentioned surfactant include, for example,
Anionic (carboxylate, sulfonate, sulfate ester, phosphate ester, phosphonate, etc.), cationic (amine salt, quaternary ammonium salt, benzalkonium salt, benzethonium chloride salt, pyridinium) Salt, imidazolinium salt, sulfonium salt, polyethylene polyamine, etc.), amphoteric system (amino acid, carboxybetaine, sulfobetaine, aminosulfate, aminocarboxylic acid salt, imidazoline derivative, etc.), nonionic (ether type, ether ester type) , Ester type, nitrogen-containing type, polyhydric alcohol, amino alcohol, polyethylene glycol, etc.) and fluorine-based surfactants, but not limited thereto.

As the organic solvent contained in the water or the aqueous solution, turpentine, dipentene, butyl acetate, carbon tetrachloride, cellosolve acetate, xylene, toluene, ethyl acetate, diacetone alcohol, methyl cellosolve acetate, benzene, methyl ethyl ketone, Examples thereof include, but are not limited to, methyl acetate, methylene chloride, ethylene dichloride, cyclohexane, cellosolve, dioxane, acetone, methyl cellosolve, cyclohexanol, butanol and the like.

The organic solvents used alone are carbon-hydrogen type solvents such as hexane, heptane, octane, nonane, spirit, naphtha N01-6 (trade name of Shell Petroleum Co.), Isopar E, L, K, V (trade name of Exxon), IP Solvent (trade name of Idemitsu Oil Co., Ltd.), Shell-sol 70, 71, Solvesso 100,
150 (trade name of Shell Oil), Ascom OMS,
460 (trade name of Spirits), Vegasol 103
0,2130,3040 (trade name of Mobil Oil Co., Ltd.) and the like. Further, Fluorinert FC40, 43, 70, 77 (trade name of Sumitomo 3M), which is a fluorine-based solvent,
Aflude E10, 16, 18, etc., Shin-Etsu Silicone KF96 (trade name) which is a silicone solvent, Toray Silicone SH200, 344 (trade name), Toshiba Silicone T
SF431 (trade name) and the like are included, but the invention is not limited thereto.

Further, the liquid applying unit / toner peeling unit 6 is a first to third peeling roller 3 as a peeling member for peeling and removing the toner from the transfer paper 10 supplied with the liquid.
02a, b, c. The first to third peeling rollers 302a, 302b, 302c are configured to be movable so as to come into contact with or separate from the surface of the paper holding drum 601, and the movement thereof is controlled by the controller. Also, the first to third peeling rollers 302
The surfaces of a, b, and c are configured to have an adhesive force larger than that of the transfer paper 10 and the toner to at least the softened toner. Specifically, a toner component resin which is the same as or similar to the above toner, a component resin of an adhesive, or the like can be used, and a metal material such as an aluminum-based, copper-based, nickel-based, or iron-based material can also be used. But,
It is not limited to these. Further, the above resin is
It may be water-soluble or water-insoluble.

Examples of the toner component resin include polystyrene resin, acrylic resin, methacrylic resin, styrene-butyl acrylic copolymer, styrene-butadiene copolymer, polyester resin, and epoxy resin, but are not limited thereto. Not a thing.

As the component resin of the adhesive, protein adhesives such as glue, gelatin, albumin, and casein, and carbohydrate-based adhesives such as starch-based, cellulose-based, complex polysaccharide-based (arabic gum, tragacanth gum, etc.) Agents, vinyl acetate polymers and copolymers, acrylics,
Thermoplastic adhesive such as ethylene copolymer, polyamide, polyester, polyurethane, rubber adhesive such as polychloroprene-based, nitrile rubber-based, recycled rubber-based, SBR-based, natural rubber-based, rubber-based, acrylic-based, etc. Polyethylene terephthalate (PE) with pressure-sensitive adhesive and titanium oxide dispersed
T), etc., but not limited thereto.

When the above resin is used, it is desirable to have a multi-layer structure of at least two layers of a support and a surface layer from the viewpoint of preventing elongation due to tension or heat, durability and the like. That is, when a roller-shaped peeling member is used as in the illustrated example, it is desirable to form a peeling member by forming a surface layer made of the above resin or the like on a base roller as a support.

As a support for supporting the above-mentioned resin, etc.,
For example, rubber rollers, sheets, cellophane tapes, kraft paper adhesive tapes, polyvinyl chloride tapes, acetone tapes, filament reinforcing tapes, and other tapes can be used, but are not limited thereto.

The first to third peeling rollers 302a, 302b,
A heating lamp 3 as a toner softening means is provided inside c.
01a, b, c are built in. This heating lamp 301
a, b, c are closely attached to the front and back of the transfer paper 10 and
The toner adhered to the sheet is heated to be softened, whereby the toner is easily separated from the fibers of the transfer paper 10. It is desirable to perform this heating to such an extent that the toner on the transfer paper 10 is not melted at the pressure contact portion with the drum 601. When the toner is melted, the toner on the transfer paper 10 is not divided into the paper side and the first to third peeling rollers 302a, b, c side, and the first to third peeling rollers 302a, 302b.
It is difficult to transfer to the c side. Further, if the heating is excessively performed, the transfer paper 10 is excessively dried while passing the first to third peeling rollers 302a, 302b, 302c which are in pressure contact with the drum 601, and the fixing force of the toner to the transfer paper 10 is increased.
Is stronger than when it is wet, and the transfer paper 10 may stick to the first to third peeling rollers 302a, 302b, 302c via the toner and may not be separated. Therefore, it is desirable to heat the transfer paper 10 after passing through the heating unit to such an extent that a small amount of damp air remains and the redeposition of the toner can be prevented.

Further, the liquid applying unit / toner peeling unit 6 includes the first to third peeling rollers 302a, 302b, 302c.
A cleaning device 304 for cleaning the surface of the device, a driving unit (not shown), and the like are provided. The cleaning device 304 includes a cleaning roller 305a, which removes toner on the surfaces of the first to third peeling rollers 302a, b, c.
b, c, scraper blades 306a, b, c for scraping off the toner on the cleaning rollers 305a, b, c, and a toner receiver (toner container) 307 for storing the toner scraped off by the scraper blades 306a, b, c ing. The cleaning rollers 305a, b, c remove excess toner on the surface of the first to third peeling rollers 302a, b, c to remove the first to third peeling rollers 302a, b, c.
It may be configured to smooth the surface. Further, instead of this cleaning roller, a blade, a scraper or the like may be used.

By the way, the above first to third peeling rollers 302
The a, b, and c are configured so that they have different adhesion capabilities to at least the softened toner.
Specifically, in this embodiment, the first peeling roller 30
The surface of 2a is the roughest of the three peeling rollers, and has the smallest adhesion to the softened toner. The surface of the third peeling roller 302c is the finest of the three peeling rollers, and has the largest adhesion ability to the softened toner. The surface of the second peeling roller 302b is the first peeling roller 3
02a and the third peeling roller 302c have an intermediate roughness, and the adhesion ability to the softened toner is also intermediate between the first peeling roller 302a and the third peeling roller 302c.

The first to third peeling rollers 302a,
Instead of b and c, a belt having the same surface characteristics is used, or instead of the cleaning rollers 305a, b and c of the cleaning device 304, the first to third peeling rollers 30 are used.
It is also possible to use a cleaning blade, a scraper, or the like that is brought into direct contact with the surfaces 2a, b, c.

After the toner peeling process, the drum 6 is
As a detection unit for detecting the unremoved image remaining on the transfer paper 10 held by 01, a CCD sensor 603 is provided on the downstream side of the peeling roller 302 in the rotating direction of the drum 601.

The drying unit 4 is for drying the transfer paper 10, and is composed of an upper drying roller 402 made of, for example, aluminum with a built-in heating lamp 401, and a lower drying roller 404 pressed against the upper drying roller 402. . The lower drying roller 404 is provided with a surface layer made of a liquid-supplying member, and a diaphragm blade (not shown) for squeezing the liquid in the surface layer is in contact therewith. Instead of such a drying roller pair 402, 404,
Alternatively, a belt-shaped member may be used, or a hot air fan or an infrared lamp may be used.

As the identification mark giving unit 30, a punching unit for punching holes as identification marks in the transfer paper 10, a printing unit for printing a predetermined identification mark on the transfer paper 10, or the like can be used.

The sorting unit 40 includes a deflecting claw 41, guide plates 42a, 42b, etc., and transfers the transferred transfer sheet by switching the position of the deflecting claw 41 according to control data from a control unit described later. The paper 10 is branched and conveyed to a guide plate 42a that forms a conveyance path for the transfer paper 10a where the unremoved image does not remain and a guide plate 42b that forms a conveyance path for the transfer paper 10b where the unremoved image remains. To do.

The paper receiving unit 5 is provided with two paper discharge trays 501a and 501b for receiving the transfer paper 10 sorted by the sorting unit 40, and the transfer paper 10a having no unremoved image remains. , Discharge roller pair 502a
Then, the transfer paper 10b on which the unremoved image remains is ejected to the paper ejection tray 501b by the ejection roller 502b. The paper discharge tray 501a of the paper receiving unit 5 is an elevator tray that can be raised and lowered, and is provided with a paper discharge level sensor 505 that detects the level of the transfer paper 10 on the paper discharge tray 501a.

Although not shown in the figure, the toner removing device includes a detecting means for detecting whether or not the transfer paper 10 is present on the paper feed table, a double feed detecting means for the transfer paper 10 by the paper feed unit 1, Liquid residual amount detecting means in the liquid containers for the penetration enhancing liquid 21 of the permeation promoting liquid applying part 2a and the processing liquid 20 of the processing liquid applying part 2b, automatic replenishing means for the liquid container, transfer paper 10 device Inner jam detection means, lighting control means for each heating lamp,
A means for filling the toner receiving container 307 is provided.

Next, referring to FIG. 2, a control section as a control means for operating the toner removing device will be described. FIG. 2 is a control block diagram for operating the toner removing device of FIG. In FIG. 2, the commercial power source 9
When AC power is supplied from 01 and the main switch 902 is turned on, DC power supply (PSU) 903 supplies DC power supply voltage to each control IC. Powered CPU
904 resets the program counter etc.
Based on the program contents written in OM905,
Start control. The CLK oscillator 906 supplies a reference clock (CLK) necessary for CPU operation.

When data for turning on the relay 911 is sent to the parallel interface 908 through the address data bus 907, the contact drive coil 911a of the relay 911 is energized via the driver 910 connected to the output port of the parallel interface. , The contact of relay 911 closes.

Then, the solid state relay SSR1
When the data for turning on (912) and SSR2 (913) are sent to the driver 910 in the same manner as above,
SSR1 (912) is turned on via the driver 910
And the resistor 914 corresponding to the heating lamps 301a, b, c that heat the first to third peeling rollers 302a, b, c.
Current flows through a, b, c, and the rollers 302a, 302b, 302c
To start heating. Further, the SSR2 (913) is turned on via the driver 910, and a current flows through the resistor 915 corresponding to the heating lamp 401 that heats the drying roller 402 to start heating of the roller 402. The temperatures of the rollers 302a, b, c, 402 are detected by the thermistors 916, 917, respectively, and detected by the A / D converter 91.
It is input to 8 and converted from analog data to digital data. The control temperature of each roller is written in the RAM 919, and the temperature is controlled by comparing with that value. This control temperature data is sent from the control unit 920 of the operation display unit 50 through the serial interface 921 to the RAM 91.
It is also possible to write in 9.

Further, the paper feed motor 923, the registration motor 924, the main drive motor 922, and the paper holding drum motor 933 are connected to the driver 910 of the control section. All the loads other than the paper feed roller 102, the separation roller pair 103, and the registration roller 104 are synchronously driven by the main drive motor 922.

Further, a solenoid 926 for opening and closing the clamp claw 602 of the paper holding drum 601 and a solenoid 932 for switching the position of the deflecting claw 41 are connected to a driver 910 of the control section.

The application roller solenoids 927a and 927a for contacting and separating the application rollers 207a and 207b are connected to the driver 910 in the same manner as the solenoid 926, and which application roller 207 is selected depending on the state of the transfer paper 10. Whether to contact the holding drum 601 is controlled. Further, the rotation of each roller 207 is driven by each drive motor, and for example, the coating roller 207a for the penetration promoting liquid 21 is applied.
Is driven by a coating roller motor 928a. Similarly, the coating roller 207b for the processing liquid 20 is the coating roller motor 9
It is driven by 28b.

The first to third peeling rollers 302a, 302b,
Separation roller pressure motors 929a, b, c for contacting and separating c
Is also connected to the driver 910 similarly to the coating roller motors 928a and 928b, and the amount of pressurization of the roller 302 to the paper holding drum 601 according to the state of the transfer paper 10 and the contact with and separation from the paper holding drum 601. Is controlled.

Further, the transfer paper state sensor 105 and C
The CD sensor 603 is connected to the A / D converter 918. Further, the control unit 930 in the identification mark giving unit 30 is connected to the address data bus 907 through the serial interface 921 like the control unit 920 of the operation display unit 50. A paper discharge level sensor 505 that detects the presence or absence of transfer paper on the paper discharge tray 501a of the paper receiving unit 5 is connected to the address data bus 907 through the parallel interface 908 to drive the paper discharge tray 501a up and down. The paper discharge tray motor 931 is connected to the driver 910.

Next, the control of the toner removing device of FIG. 1 will be described with reference to the flowcharts of FIGS. 3 is a flow chart of control of the toner removing device having the above-mentioned configuration, FIG. 4 is a sub-flowchart showing a toner removing processing mode of the flow chart, and FIG. 5 is a sub-flowchart showing toner removing processing of the sub-flowchart. First, in FIG. 3, as described above, a current flows through the resistors 914a, b, c, 915 to start heating of the rollers 302a, b, c, 402, and the rollers 302a, b, c, 402 are heated. When the temperature reaches a sufficient temperature (setting value of RAM) for peeling or drying, an operable display (LED lighting or the like) is displayed on the operation display unit 50 via the control unit 920. When the operation command data is transmitted from the control unit 920 of the operation display unit 50, the CPU 9
In step 04, the main drive motor 922 is operated, and when the load of the motor can be driven at a constant speed, the sheet feeding motor 923 is driven to start sheet feeding (step 1). The transferred transfer paper 10 is read by the transfer paper state sensor 105 with data for determining whether or not it can be reused (step 2). This data is converted into parallel digital data by the A / D converter 918, and if necessary, image processing is executed to judge the transfer paper state (step 3). (Hereafter, margin)

Next, the registration motor 924 rotates while timing with the paper feed motor 923 to prevent skew (step 4). Next, the transfer paper state data is compared with the contents (the image area ratio limit value, the reuse limit value, etc.) written in the ROM 905, and it is determined whether the toner removal processing is possible (step 5). ). If it is determined that the toner removal processing is impossible, the paper feed mode is entered (step 6), the deflecting claw solenoid 932 is driven, and the transfer paper 10 is ejected to the paper ejection tray 501b (step 7). On the other hand, when it is determined that the toner removal processing is possible, the toner removal processing mode described later is executed (step 8).

In the toner removal processing mode (see FIG. 4), the registration motor 924 feeds the transfer paper 10 to the position of the open clamp claw 602 of the paper holding drum 601. When control data for closing the clamp claw 602 of the paper holding drum 601 is sent to the parallel interface 908, the driver 910 operates the solenoid 926 to close the clamp claw 602 and grip the transfer sheet 10 (step 8- 1), turn on the paper holding drum motor 933
N and rotate (step 8-2).

Next, by the coating rollers 207a, 207b,
The permeation promoting liquid 21 such as a surfactant and the treatment liquid 20 such as distilled water are applied to the transfer paper 10 on the paper holding drum 601 (step 8-3). As a result, the transfer paper 10
The treatment liquid 20 is permeated into the interface between the toner and the toner. Here, based on the state data of the transfer sheet 10 read by the transfer sheet state sensor 105, the application conditions of the liquids 20 and 21 to the transfer sheet 10 may be different.

Then, the transfer paper 10 and the toner entangled therein are easily peeled off by heating by the heating lamps 301a, 301b, and 301c, and the transfer papers are moved by the first to third peeling rollers 302a, 302b, and 302c. A toner peeling process for peeling and removing the toner from above 10 is executed (step 8-
4). This toner peeling process will be described in detail below.

In the toner peeling process (see FIG. 5), first,
The image density of the transfer paper 10 read by the transfer paper state sensor 105 (toner adhesion amount on the transfer paper 10) is determined by the ROM 9
It is compared with the contents written in 05 (step 8).
-4-1). Here, the image density of the transfer paper 10 is RO
When it is determined that the image density written in M905 is not more than c%, the surface roughness is the smallest among the three peeling rollers 302a, 302b, 302c, and the adhesion ability to the softened toner is the largest. 3 The peeling roller 302c is moved by the peeling roller pressing motor 929c so as to come into contact with the paper holding drum 601 (step 8-4-2), and the toner is transferred onto the transfer paper 10 at the interface where the treatment liquid 20 has permeated.
It is peeled off from the top and removed. On the other hand, the image density of the transfer paper 10 is the image density c written in the ROM 905.
When it is determined that the amount is not less than%, it is determined whether or not it is the first peeling step (step 8-4-3). Here, when it is determined that it is the first peeling step, the first peeling roller 302a having the smallest adhesion ability to the softened toner is moved by the peeling roller pressing motor 929a so as to come into contact with the paper holding drum 601. Then, (step 8-4-4), the toner is peeled off from the transfer paper 10 and removed at the interface where the treatment liquid 20 has permeated. On the other hand, when it is judged that it is not the first peeling step, it is judged whether it is the second peeling step (step 8-4-).
5) If it is determined that the second peeling step is performed, the first peeling roller 302a and the third peeling roller 302 are removed from the softened toner.
The second peeling roller 302b, which has the ability to adhere to the peeling roller 302c, is moved by the peeling roller pressing motor 929b so as to come into contact with the paper holding drum 601 (step 8-4-6), and the treatment liquid 20 is permeated. At the interface, the toner is peeled off from the transfer paper 10 and removed. If it is determined that it is not the second peeling step, the third peeling roller 302c causes the peeling roller pressing motor 929c to operate.
Is moved so as to come into contact with the paper holding drum 601 (step 8-4-2), and the toner is peeled off and removed from the transfer paper 10 at the interface where the treatment liquid 20 has permeated.

In FIG. 4, after the peeling process is performed, the unremoved toner image remaining on the transfer paper 10 is detected by the CCD sensor 603 (step 8-5). Here, the detection data from the CCD sensor 603 is sent to the CPU 904 via the A / D converter 918, and it is determined whether or not the ratio of the remaining image area of the unremoved image is equal to or less than a predetermined value a% (step 8-6). ). In the case of NO, it is further judged whether or not the liquid applying process and the peeling process have been performed three times or more (step 8-7). N at step 8-7
In the case of O, after the liquid application process is further executed, the peeling process is repeated according to the flowchart shown in FIG. Accordingly, the fibers on the surface of the transfer paper 10 are not separated from the transfer paper 10 together with the toner, and
It becomes possible to completely remove the toner from the transfer paper 10 while minimizing the surface damage. On the other hand, if YES in step 8-7, that is, if the toner image of the constant area cannot be peeled even after repeating the liquid applying process and the peeling process a predetermined number of times, the unremoved image is detected by the CCD sensor 603, The detection data is sent to the CPU 904 via the A / D converter 918, and the RAM 919
Is used for control in the identification mark giving unit 30, the sorting unit 40, and the like. If YES in step 8-7, the control data for opening the clamp claw 602 is sent to the parallel interface 908 even if the toner peeling process is in progress, and the driver 910 stops the operation of the solenoid 926 (step 8). −
8) The transfer paper 10 is released from the clamp claw 602, separated from the paper holding drum 601, sent to the drying unit and dried (step 8-9), and sent to the sorting unit 40.

In the sorting unit 40, the transfer paper 10 on which the unremoved image remains based on the CCD sensor 603.
When b is conveyed, the position of the deflection claw 41 is switched so as to convey the transfer paper 10b into the guide plate 42b. As a result, the transfer paper 10b is discharged to the non-reusable transfer paper discharge tray 501b (step 8-1).
0).

Further, it is determined YES in the above step 8-6.
If the remaining image area is a% or less, the solenoid 926 is turned off as in steps 8-8 and 8-9 above.
Then, the clamp claw 602 is opened to release the transfer paper 10, and the drying unit 4 dries (steps 8-11 and 8-1).
2).

Next, the identification mark giving unit 30 gives an identification mark corresponding to the number of reuses to the transfer paper 10 (step 8-13). As the identification mark giving unit, for example, a punching unit, a printing unit or the like can be used. When a punching unit is used, the above C
The CD sensor 603 detects whether or not there is already a punch, and when there is a punch, control is performed such that, for example, a punch is made next to it. Also, when using the printing unit,
For example, the CCD sensor 603 detects whether there are ◯, ×, etc. already printed on the front end of the transfer paper 10, and if there is a ◯, × mark, the control is performed so that, for example, it is printed next to it. Further, the color of the identification mark may be changed according to the number of reuses. For example, reuse count 1,
2, 3, 4. ． Against red, blue, yellow, green. ． When a red identification mark is detected by the CCD sensor 603, control is performed so that a blue identification mark is formed on the mark. This identification mark is used as data indicating the state of the transfer paper 10. Then, the transfer paper 10 provided with the identification mark is sent to the sorting unit 40.

In the sorting unit 40, based on the CCD sensor 603, the transfer paper 1 on which no unremoved image remains
When 0a is conveyed, the position of the deflection claw 41 is switched so that the transfer sheet 10b is conveyed into the guide plate 42a. As a result, the transfer paper 10b is discharged to the reusable transfer paper discharge tray 501a (step 8-1).
4). Here, the paper discharge level sensor 505 detects the transfer paper 10a discharged onto the paper discharge tray 501a, sends data with paper through the parallel interface 908, and the CPU 904 operates the paper discharge tray motor 931. The paper ejection tray 501a is lowered. This lowering operation continues until the input from the paper discharge level sensor 505 reaches a value corresponding to the absence of paper, and the height of the paper on the paper discharge tray 501a is a constant height even if the stack amount is large. The paper is always stable.

As described above, according to this embodiment, the three peeling rollers 302a, 302b, 302c are selectively used according to the image density on the transfer paper 10 (the amount of toner adhered on the transfer paper 10), and When the density is high, the toner is removed by peeling in three times, that is, when the image density on the transfer paper 10 is a predetermined image density c% or more, the adhesion ability to the softened toner is the highest. When the image density is not more than c%, the toner is removed by using the one having the largest adhesion ability. Therefore, when the image density is high, all the toner is removed by one peeling. The stress applied to the transfer paper 10 at the time of peeling can be reduced as compared with the case where the transfer paper 10 is removed, and the fibers on the surface of the transfer paper 10 are not peeled from the transfer paper 10 together with the toner, and the surface of the transfer paper 10 is damaged. Up to The toner from the transfer sheet 10 while keeping the limit can be completely removed.

Further, since the liquid is supplied to the transfer paper 10 to which the toner is attached and the liquid is permeated into the interface of the transfer paper 10 with the toner, the toner is peeled off, so that the paper fiber is not further damaged and the toner is removed. Can be removed.

Further, the transfer paper 10 is automatically sorted by the sorting unit 40, and the transfer paper 10b on which the unremoved image remains is placed on one of the discharge trays 501b of the paper receiving unit 5 and the image is completely removed. Transfer paper 10a to another paper output tray 5
01a, the transfer paper 10a on which the unremoved image remains and the transfer paper 10a on which the toner has been completely removed
The work of distinguishing from is unnecessary.

If the identification mark giving unit 30 is used as an unrecognizable means for processing the unremoved image so that it cannot be recognized, a hole as an identification mark may be formed on the unremoved image on the transfer paper 10. By controlling to print the mark, it is possible to prevent the confidential information from being leaked and the unremoved image such as the mark and the signature from being misused when the transfer paper 10 is erroneously discarded. You can

Further, since the surface of the transfer paper 10 is brought into contact with the peeling roller 302 while the surface of the transfer paper 10 is wet, and the transfer paper 10 is heated to such an extent that it can be kept wet even when it is separated from the peeling roller 302, the peeling roller Even when the surface 302 is made of a material having a toner adhesive property, it is possible to prevent the transfer paper 10 surface itself from adhering to the surface of the peeling roller 302 and cause separation failure, and the separated portion of the transfer paper 10 is separated from the peeling roller. Retransfer of the toner due to re-contact with 302 can be prevented.

In the present embodiment, instead of the three peeling rollers 302a, 302b, 302c, two peeling rollers may be provided and the toner may be removed twice. It is also possible to provide four or more peeling rollers and remove the toner in four or more times.

Further, in this embodiment, the surface roughness of the peeling roller 302 is made different in order to make the toner peeling ability of the plurality of peeling rollers 302 different, but instead of or in addition to this, a plurality of peeling The surface of the roller 302 is made of materials having different amounts of adhered toner per unit contact surface,
The plurality of peeling rollers 302 may have different toner peeling capacities. In this embodiment, for example, a first peeling roller made of a resin or the like having the same or similar SP value as the toner component resin, and the above S
A second peeling roller made of a resin or the like having an SP value outside the P value is provided, and when the image density on the transfer paper 10 is equal to or higher than a predetermined density, a peeling process is performed by the second peeling roller. Then, the peeling process may be performed by the first peeling roller, and when the image density is not higher than the predetermined density, the peeling process may be performed by using the first peeling roller. In this case, a resin having the same or similar SP value as that of the toner component resin has a small interfacial tension with the toner and has a high adhesive strength between the two, so that the toner peeling process can be efficiently performed. In addition, from the theoretical consideration of adhesive or adhesiveness,
When the surface tension of the adhesive and the adherend (solid to be adhered) are equal and have almost the same polarity, the interfacial tension becomes minimal and the adhesive strength is maximized. When the resin having the SP value of 1 has the same kind of polar group, the interfacial tension becomes extremely small and the adhesive strength is further improved. The SP value that is the same as or similar to the toner component resin is, for example, in the following range. Examples of resins having an SP value smaller than the lower limit of the above range include polytetrafluoroethylene, polydimethyl silicone, butyl rubber, and polyethylene. Examples of resins having an SP value larger than the upper limit of the above range include polyvinylidene chloride, nylon, and polyacrylonitrile.

Further, in the toner removing apparatus of this embodiment, the sorting unit 40 for sorting the transfer paper 10 is arranged between the identification mark giving unit 30 and the paper receiving unit 5, but the sorting unit 40 is dried. It is arranged immediately after the unit 4 and the identification mark giving unit 30 is attached to the discharge cassette 5
You may arrange | position just before the paper discharge tray 501b which discharges the transfer paper 10b in which the unremoved image remains inside. in this case,
The unremoved image (image by stamp, writing, etc.) remaining on the transfer paper 10 after the peeling is detected by the CCD sensor 603, and the transfer paper 10 on which the unremoved image is detected is sorted by the sorting unit 40. After that, the identification mark giving unit 30
Then, an identification mark is attached and the sheet is discharged onto one of the discharge trays 501b of the discharge cassette 5. On the other hand, the transfer paper 10a from which the image has been completely removed is sorted by the sorting unit 40, and then discharged onto another discharge tray 501a without passing through the identification mark giving unit 30.

Further, in the toner removing apparatus of this embodiment, the processing liquid 20 and the permeation promoting liquid 21 are applied to the transfer paper 10 before the toner peeling process, but before the first toner peeling process. Alternatively, the treatment liquid 20 and the penetration promoting liquid 21 may be applied to the transfer paper 10, and only the treatment liquid 20 may be applied to the transfer paper 10 before the second and subsequent toner peeling processes. This makes it possible to keep the amount of the penetration promoting liquid 21 attached to the transfer paper 10 constant when the toner peeling process is repeated. Note that 1
When the processing liquid 20 and the permeation promoting liquid 21 are applied to the transfer paper 10 only before the toner removing process of the second time, the permeation promoting liquid applying section 2a is provided, for example, between the registration roller pair 104 and the clamp claw 602. You may provide in between.

Further, in the above embodiment, the present invention is applied to the transfer paper 10 on which an image is formed by the transfer type electrophotographic copying machine, but other image forming apparatuses such as a facsimile, a printer, a printing machine, etc. It can also be applied to an image carrier such as recording paper used. Further, the present invention is not limited to an image carrier having a fibrous structure, but can be applied to an image carrier capable of forming an image. The image carrier to which the present invention is applicable may be, for example, a laminate in which the surface layer of a base sheet such as a plastic layer is a material layer such as paper.

[0078]

According to the present invention, the peeling member is selectively used according to the amount of the image-forming substance deposited on the image carrier, and specifically, the image formation on the image carrier is carried out. When the amount of the attached substance is detected to be less than the predetermined amount, a peeling member having a large attaching ability is selected and used from at least two types of peeling members having different attaching ability, and the amount of the image forming substance on the image carrier is When the adhesion amount is detected to be a predetermined amount or more, the image holding is performed by sequentially selecting and using the peeling member having the smaller adhesion ability from the peeling member having the smaller adhesion ability among the at least two types of the peeling members having different adhesion ability. Since the image forming substance on the body is peeled off and removed from the image holding member, the image forming substance can be satisfactorily removed while the damage on the surface of the image holding member is minimized. Therefore, the image-forming substance can be satisfactorily removed regardless of the amount of the image-forming substance deposited on the image carrier.

In particular, according to the invention of claim 7, when the image-forming substance is removed from the surface of the image carrier by the softening means, the image-forming substance is softened, whereby the image-forming substance is transferred onto the surface of the image carrier. The image forming substance can be removed while the damage of the fibrous material is suppressed more favorably, for example, even when the image carrier whose surface is made of fibrous material is used.

Particularly, according to the invention of claim 8, after the image forming substance is removed from the surface of the image holding member by the restoring means, the smoothness and humidity of the image holding member are made substantially the same as those before the image forming substance is removed. Therefore, for example, an image carrier whose surface is made of fiber can be used.

In particular, according to the invention of claim 3, 9 or 10, in removing the image-forming substance from the surface of the image carrier,
Since the adhesion between the surface of the image carrier and the image-forming substance is destabilized, even when an image carrier whose surface is made of fibrous material is used, the damage to the fibrous material can be minimized. The imaging substance can be removed.

[Brief description of drawings]

FIG. 1 is a front view showing a schematic configuration of a toner removing device according to an embodiment.

FIG. 2 is a control block diagram for operating the toner removing device.

FIG. 3 is a flowchart of control of the toner removing device.

FIG. 4 is a sub-flowchart showing a toner removal processing mode of the same flowchart.

FIG. 5 is a sub-flowchart showing the toner peeling process of the sub-flowchart.

[Explanation of symbols]

 1 Paper Feeding Unit 4 Drying Unit 5 Paper Receiving Unit 6 Liquid Applying Unit and Toner Peeling Unit 9 Control Unit 10 Transfer Paper 20 Processing Liquid 21 Permeability Promoting Liquid 30 Identification Mark Applying Unit 40 Sorting Unit 50 Operation Display Unit 302a First Peeling Roller 302b Second peeling roller 302c Third peeling roller

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Kiyoshi Tanigawa 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Co., Ltd. (72) Yoshiaki Miyashita 1-3-6 Nakamagome, Ota-ku, Tokyo Shares In Ricoh Company (72) Inventor Ryo Shingu 1-3-6 Nakamagome, Ota-ku, Tokyo Stock Company Ricoh (72) Inventor Shin-ichi Kuramoto 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Company (72) Inventor Sadao Takahashi 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Company (72) Inventor Yoshiyuki Kimura 1-3-6 Nakamagome, Ota-ku, Tokyo Ricoh Company

Claims (10)

[Claims] 1. A method for removing an image-forming substance from an image-holding member, which removes the image-forming substance from an image-holding member having the image-forming substance stably attached to the surface thereof. An adhesion amount detecting step of detecting an adhesion amount, and an adhesion force greater than an adhesion force between the surface and the image forming substance with respect to the image forming substance on the image holding member, and different adhesion abilities. Of at least two types of peeling member,
An image holding device comprising: a peeling step of selecting the peeling member according to the amount of the image forming substance adhered, bringing the peeling member into contact with the image forming substance on the image holding body, and then separating the peeling member from the image holding body. A method of removing an image-forming substance from the body. 2. A method for removing an image-forming substance from an image-holding member, which removes the image-forming substance from an image-holding member having the image-forming substance stably attached to the surface thereof. An adhesion amount detecting step of detecting an adhesion amount, and when the adhesion amount of the image forming substance on the image carrier is detected to be a predetermined amount or more in the adhesion amount detecting process, the image formation on the image carrier is performed. Of the at least two types of peeling members having a larger adhesion to the substance than the surface and the image forming substance, and having different respective adhesion abilities, the peeling member having the smaller adhesion ability has the larger adhesion ability. After sequentially contacting the image forming substance on the image carrier with the peeling member, the image forming substance is separated from the image carrier, and the adhesion amount of the image forming substance on the image carrier is less than a predetermined amount in the adhesion amount detecting step. If detected, of the at least two types of peeling members A large peeling member adheres ability after contact with the image forming substance on the image carrier, the image forming substance removing method from the image carrier characterized by having a separation step of separating from the image holding member. 3. The image, the surface of which is stably adhered to the image carrier composed of fibrous material, before the peeling member is brought into contact with the image-forming substance on the image carrier. The method for removing an image forming substance from an image carrier according to claim 1 or 2, wherein an adhesion destabilizing step is performed to make an adhesion state between the forming substance and the surface unstable. 4. An image forming substance removing device for removing an image forming substance from an image holding member having an image forming substance stably attached to the surface thereof, comprising: An adhesion amount detecting means for detecting an adhesion amount, and an adhesion force with respect to the image forming substance on the image holding member that is larger than an adhesion force between the surface and the image forming substance, and at least two different adhering abilities. And a peeling member selecting means for selecting the peeling member according to the amount of the image forming substance adhered, bringing the peeling member into contact with the image forming substance on the image holding body, and separating the peeling member from the image holding body. An apparatus for removing an image forming substance from an image carrier, which is characterized in that: 5. When the amount of adhesion of the image forming substance on the image carrier is detected by the amount of adhesion detecting means to be a predetermined amount or more, the at least two types of peeling members having a small adhesion ability are separated. 5. The image holding device according to claim 4, wherein the peeling member selecting means is configured to sequentially contact the image forming substance on the image holding body from the member to the large peeling member and then separate the image forming material from the image holding body. A device for removing image-forming substances from the body. 6. The peeling member having a large adhesion ability among the at least two kinds of peeling members when the adhesion amount detecting unit detects that the adhesion amount of the image forming substance on the image carrier is less than a predetermined amount. 5. The image forming substance from the image holding member according to claim 4, wherein the peeling member selecting means is configured so as to separate from the image holding member after the member is brought into contact with the image forming substance on the image holding member. Removal device. 7. The apparatus for removing an image-forming substance from an image carrier according to claim 4, further comprising softening means for softening the image-forming substance when removing the image-forming substance from the surface. 8. After removing the image-forming substance from the surface,
5. The image forming substance removing apparatus from the image holding member according to claim 4, further comprising a restoring means for making the smoothness and humidity of the image holding member substantially the same as those before removing the image forming substance. 9. An adhesion instability that destabilizes the adhesion between the surface made of fibrous material and the image forming substance prior to bringing the peeling member into contact with the image forming substance on the image carrier. 8. A rectifying means is provided to the rectifying means.
Or the image forming substance removing device from the image carrier of item 8. 10. The destabilizing means for impregnating the image destabilizing substance with the destabilizing substance, which destabilizes a stable adhered state between the fibrous surface and the image forming substance. 10. The material impregnating means is used as the material impregnating means.
Image-forming substance removing device from the image carrier.