JPH1037097A - Recording medium with adhesive layer - Google Patents

Abstract

(57) Abstract: In a printer having a recording head for performing recording in a non-contact state with a recording medium and means for changing a conveying direction of the recording medium in the printer, the contact between the recording medium and the recording head is effective. A recording medium and a recording method that can be prevented from occurring. The recording medium includes a recording sheet, an adhesive layer formed of an adhesive formed on one surface of the recording sheet, and a release sheet provided on the adhesive layer. Softness is 200mgf ~ 1500mgf
Wherein the pressure-sensitive adhesive is an acrylic cross-linkable pressure-sensitive adhesive,
In the JIS-Z-0237 holding force test, when the time to fall is 500 minutes or more, or when the time to fall is less than 500 minutes, it breaks down at the interface between the adherend and the adhesive layer and falls. Use a recording medium.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording sheet having an adhesive layer on which recording is performed using a printer device.

2. Description of the Related Art There are two types of printers that perform recording on a recording medium: recording is performed by contacting a recording head with a recording medium, and printing is performed without contacting the recording head.

On the other hand, in order to reduce the size of the printer, printers having means for changing the direction in which a recording medium is conveyed in the printer have become mainstream. For example, there is known a printer provided with means for winding a recording medium around a drum in a printer and changing a conveying direction of the recording medium.

In a printer provided with such a means for changing the transport direction of a recording medium and having a non-contact type recording head, it is observed that the recording medium comes into contact with the recording head. was there. Such contact of the recording medium with the recording head is remarkably observed in the recording medium provided with the adhesive layer.

[0005] The contact of the recording medium with the recording head may cause stains on the printed matter, failure of the recording head, and the like, and therefore it is desirable to prevent the contact.

[0006]

SUMMARY OF THE INVENTION The present inventors have recently proposed a printer having a recording head for performing recording in a non-contact state with a recording medium, and a means for changing the transport direction of the recording medium in the printer.
It has been found that a combination with a specific recording medium can effectively prevent contact between the recording medium and the recording head.
The present invention is based on this finding.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording medium that does not easily come into contact with a recording head in a printer.

Another object of the present invention is to provide a recording method in which contact between a recording medium and a recording head is small.

The recording medium according to the present invention is a recording medium having a recording sheet, an adhesive layer formed of an adhesive formed on one surface of the recording sheet, and a release sheet provided on the adhesive layer. The recording medium has a Gurley-type bending resistance of 200 mgf to 1500 mgf, the pressure-sensitive adhesive is an acrylic cross-linkable pressure-sensitive adhesive, and JIS-Z-0
In the 237 holding force test, when the time until the drop is 500 minutes or more or the time until the drop is less than 500 minutes, the sample is broken at the interface between the adherend and the adhesive layer and falls.

A recording method according to the present invention is a printer comprising: a recording head for performing recording in a non-contact state with a recording medium; and means for changing a conveying direction of the recording medium in the printer while drawing an arc. The central angle of the arc is about 1
Introducing a recording medium according to the present invention into a printer having an arc of about 20 to about 200 degrees and a radius of the arc of about 10 to about 50 mm, and performing recording on the recording medium by the recording head. It is.

[0011]

DETAILED DESCRIPTION OF THE INVENTION A preferred embodiment of the recording medium according to the present invention is as shown in FIG. 1, and FIG. 2 is a sectional view taken along the line II-II in FIG.

As shown in FIG. 1, a recording medium 10 includes a recording sheet 11, an adhesive layer 12 made of an adhesive formed on the back surface of the recording sheet 11, and a release sheet adhered to the adhesive layer 12. 13 are provided. In the recording medium according to the present invention, the release sheet 13 can be peeled off, and the recording sheet 11 can be stuck to an appropriate place via the adhesive layer 12.

The recording medium according to the present invention preferably has a Gurley-type softness, preferably a Gurley-type softness in the transport direction of a printer.
Is about 200 to 1500 mgf, preferably 40
It is about 0 to 1000 mgf.

Further, the recording medium according to the present invention is JIS-compliant.
In the Z-0237 retention test, the time to drop was 5
If the time is 00 minutes or more, or the time until the drop is less than 500 minutes, it breaks at the interface between the adherend and the adhesive layer, peels off, and falls. Here, the following three modes can be considered as modes in which the recording medium falls. (1) When it breaks down at the interface between the adherend and the adhesive layer 12 used in the above test and falls, (2) when it breaks down in the layer of the adhesive layer 12 and falls, and (3) Record This is a case where the sheet 11 breaks down at the interface between the sheet 11 and the adhesive layer 12 and falls. However, since the mode (3) means that the adhesive layer 12 is easily peeled off from the recording sheet 11,
Therefore, in the present invention, the above (1)
Alternatively, the recording sheet falls in the mode of (2).

A recording medium that satisfies the conditions of the Gurley-type bending resistance and the holding force test includes a recording head that performs recording in a non-contact state with the recording medium, and a unit that changes the transport direction of the recording medium in the printer. In the provided printer, it is possible to effectively prevent contact between the recording medium and the recording head, and to form an appropriate image. In the present invention, the means for changing the conveying direction of the recording medium in the printer changes the conveying direction of the recording medium while drawing an arc on the recording medium, and the arc has a central angle of about 120 to about 200 degrees, preferably about 13
0 to about 190 degrees, and the radius of this arc is about 10 to
It is about 50 mm, more preferably about 12 to about 30 mm.

FIG. 3 is a schematic diagram of a specific example of a printer having a recording head for performing recording in a non-contact state with a recording medium, and means for changing the transport direction of the recording medium in the printer.

The printer shown in FIG. 3 includes a paper feed roller 1, pressing rollers 2, 3, and 4 pressed against the paper feed roller 1, a sheet guide 5, a non-contact type recording head, For example, it includes an ink jet head 6 and paper discharge rollers 7a and 7b. In this printer, a recording medium 10 is supplied to a paper feed roller 1 by a paper supply means (not shown) in a direction indicated by an arrow a. The recording medium 10 is wound and transported in a state in which the recording medium 10 is in close contact with the paper feed roller 1 by the pressing forces of the pressure rollers 2, 3, and 4. Tip 10a of recording medium 10
Is separated from the paper feed roller 1 at the position of the pressing roller 4 and is guided below the recording head 6 by the sheet guide 5. Then, the image formation is started by the recording agent (the ejected ink droplet in the case of the ink jet recording method) from the head 6. Further, as the conveyance of the recording medium proceeds, the leading end 10a of the recording medium 10 enters between the paper discharge rollers 7a and 7b, and is further recorded while being discharged.

The means for changing the conveying direction of the recording medium shown in FIG. 3 includes a paper feed roller 1 and this paper feed roller 1.
And the pressing rollers 2, 3, and 4 pressed against. The configuration is not limited to the above configuration as long as the recording medium changes its transport direction while drawing an arc. In the apparatus shown in FIG. 3, the arc is defined by a point B in the drawing where the recording medium 10 first contacts the paper feed roller 1, and a force from the force for changing the transport direction of the recording medium 10 provided by the paper feed roller 1. It means up to the point C in the figure, which is the point to be released. The central angle of this arc is ω in the figure, and its radius substantially matches the radius d of the paper feed roller 1.

In the present invention, the arc includes not only an arc formed by a part of a perfect circle but also a part of an ellipse. In the present invention, in the case of a part of the arc of the ellipse,
It can be regarded as a circular arc having a radius of an intermediate value between the long axis and the single axis of the ellipse.

When the recording medium according to the present invention is used, recording is performed without the front end 10a of the recording medium 10 touching the surface 6a of the recording head 6 facing the recording medium 10, and enters between the discharge rollers 7a and 7b. . If the leading end of the recording medium 10 is warped as shown by 10b, an appropriate distance between the recording head 6 and the recording medium 10 cannot be obtained, and a defective image may be formed. Further, there is a possibility that a substance detached from the recording medium 10 adheres to the surface 6a of the recording head 6 and causes a failure of the recording head 6.
If the warpage of the leading end is within a certain range, the recording medium 10 enters between the discharge rollers 7a and 7b.
If the warpage is large, the recording medium 10 does not enter between the paper discharge rollers 7a and 7b, and there is a possibility that a paper feed failure may occur.
Further, if the warpage of the leading end is within a certain range, the recording medium 10 enters between the paper discharge rollers 7a and 7b. There is a possibility that an appropriate space between the recording head 6 and the recording medium 10 cannot be obtained, and a defective image may be formed. The recording medium 10 according to the present invention has
The formation of warpage as indicated by 0b is small. Therefore, contact between the recording medium and the recording head can be effectively prevented, and an appropriate image can be formed.

As described above, according to the recording medium of the present invention, warpage of the leading end of the recording medium can be effectively prevented.
As a result, the recording medium 10 is conveyed substantially horizontally with the sheet guide 5. Accordingly, in a printer using the recording medium according to the present invention, the position of the recording head 6 is not particularly limited. However, a general non-contact recording head, for example, a recording head for ink jet recording is a recording medium on the sheet guide 5 and a recording head. Is about 1 mm to about 5 mm. The position of the recording head 6 is generally the distance from the point C at which the recording medium 10 is released from the force of the paper feed roller 1 for changing the transport direction to the end of the recording head 6 on the paper feed roller 1 side. Typically, the distance from the discharge rollers 7a and 7b to the end of the recording head 6 on the discharge roller side is generally about 5 to 30 mm.

The reason why the tip of the recording medium is effectively prevented from warping by the recording medium according to the present invention is not clear, but the expected mechanism is as follows. However, the following description is only an assumption, and the present invention is not limited to this mechanism.

FIG. 4 is a sectional view showing a state in which the recording medium 10 is wound around the paper feed roller 1. The recording medium 10 that is curved along the paper feed roller 1 has an inner diameter difference (that is, a circumferential length difference) between the recording sheet 11 and the adhesive layer 12.
As a result, a compressive force P is applied to the adhesive layer 12 along the transport direction of the recording medium 10, and the compressive force P causes the adhesive layer 12 to contract. Thereafter, when the recording medium 10 is separated from the paper feed roller 1, the compressive force P is lost and the adhesive layer 1 is removed.
2 is considered to be excessively elongated. The recording medium according to the present invention has a Gurley-type bending resistance and JIS-
It is considered that the excessive elongation could be effectively prevented by controlling in combination with the results of the Z-0237 retention test.

In the present invention, the Gurley-type bending resistance is measured, for example, by a test method specified in JIS-L-1096. The details of the test method are as follows.

First, five test pieces having a length of Lcm and a width of dcm are sampled in the vertical and horizontal directions of the recording medium, respectively. The measurement is performed using a Gurley tester as shown in FIG. FIG. 6B shows a main part of the tester. The test piece 60 is attached to the chuck 61, and the chuck 6 is adjusted to the scale L / 2.54 on the movable arm 62.
Fix to 1. Next, appropriate loads Wa (g), Wa are applied to the load mounting holes a, b, c below the fulcrum 64 of the pendulum 63.
(G), Wa (g) is applied, and then the movable arm 62 is rotated at a constant speed. The numerical value RG on the dial 65 when the test piece 60 separates from the pendulum 63 is read, and the bending resistance is obtained by the following equation. The bending resistance was measured on the front and back of each of five test pieces.
It is represented by the average value in each of the vertical direction and the horizontal direction (up to one decimal place). Bending degree (N (mgf) = RG × (aWa + bWb + cW)
c) × (L ² /d)×0.306 (where a, b, and c represent the distance (cm) between the load mounting hole and the fulcrum)

The details of the JIS-Z-0237 holding force test are as follows. (1) Test piece Three test pieces each having a width of 25 mm and a length of about 150 mm are taken from the sample.

(2) Test plate The test plate has a thickness of 1.5 specified in JIS G 4305.
A SUS304 steel plate having a thickness of about 2.0 mm is cut into a width of about 50 mm and a length of about 125 mm. JIS R
An index is lightly applied in the width direction of the test plate with a water-resistant abrasive paper of No. 280 specified in 6253, and the index is uniformly polished in the length direction over the entire length until the index completely disappears. To clean the test plate, apply a solvent to the surface and wipe the surface of the test plate with gauze or the like. After drying, wipe again with the specified solvent, and then wipe thoroughly with new gauze until it is dry. Washing with such a solvent is repeated three times or more until it is visually recognized that the solvent is clean. The solvent is a suitable solvent such as hexane, gasoline, ethanol, isopropyl alcohol, toluene, etc., which is used for testing or for industrial use without residue. Further, a material such as gauze, silk cloth, tissue paper or the like which does not break fibers during use and does not detach such as a single fiber and does not contain additives soluble in the above-mentioned solvent is used.

(3) Crimping device An automatic type as shown in FIG. 7 and a manual type as shown in FIG. 8 are used. Each apparatus has a structure in which only the mass of the roller is applied to the test piece when the test piece is pressed. The mass of the roller is 2000 ± 50 g.

(4) Test method: One end of a test plate where the test piece was cleaned, and 25 × 2
Attach so that the area of 5 mm touches, and fold the unattached part with the adhesive surface inside.

Roll the roller from above the test piece at about 300 m / min.
Press and reciprocate 5 times at a speed of m.

After a lapse of 20 minutes or more, one end of the test plate is stopped with a clasp so that the test plate and the test piece hang vertically, and a 9.807N weight is attached to the end of the folded portion. Put the weight quietly, do not shake it,
Be careful not to apply any force other than the specified load to the test piece.

The time until the test piece falls from the test plate is measured. The results are expressed as the time until the test piece falls. The test is performed on three test pieces, and the average value is obtained.

According to a preferred embodiment of the present invention, a preferred embodiment of the structure of the recording medium according to the present invention is a structure as shown in FIG. FIG. 5 is a partially enlarged view of a sectional view of the recording medium shown in FIG.

As shown in FIG. 5, the recording sheet 11 preferably has a base material 10a and a recording material receiving layer 11b formed on the surface thereof.

As the base material 10a, an appropriate sheet material such as high-quality paper, glassine paper, synthetic paper, polyester film, polypropylene film, etc. can be used.

The recording agent receiving layer 11b is a layer for receiving a recording agent recorded on a recording medium in a non-contact state from a recording head. This layer may be appropriately selected depending on the type of the recording agent. For example, when recording is performed with an ink composition from a recording head (e.g., an inkjet recording method), the recording agent receiving layer 11b is known in the art or will be known in the art for appropriately absorbing and holding the ink. Ink receiving layer. The ink receiving layer can be formed from, for example, a pigment, a binder resin, and other various additives. As the pigment, silica, zeolite, calcium carbonate, diatomaceous earth, clay, talc, aluminum oxide, aluminum hydroxide and the like can be used. As the binder resin, polyvinyl alcohol, polyvinylpyrrolidone, casein, gelatin, a copolymer of acrylate, polyacrylamide, polyethylene oxide, an ethylene-vinyl acetate copolymer, a cellulose derivative and the like can be used. Additives include UV absorbers, preservatives, antioxidants, pH adjusters,
Surfactants, defoamers and the like can be used in combination. According to a preferred embodiment of the present invention, the ink receiving layer is formed by applying a mixture of the above components to the substrate 11a in an amount of 0.1 g / d after drying.
m ^{2 to} 50 g / m ² , and a total thickness of 80 μm or more,
Preferably, it is formed to have a thickness of about 90 to 250 μm.

Further, according to a preferred embodiment of the present invention, the recording sheet itself has a Gurley-type softness, preferably a Gurley-type softness in the transport direction of the printer, of 35 to 70.
It is preferably about 0 mgf, more preferably about 10 mgf.
It is about 0 to 400 mgf.

In the present invention, the pressure-sensitive adhesive layer 12 is formed of an acrylic cross-linkable pressure-sensitive adhesive. That is, the pressure-sensitive adhesive is an acrylic cross-linking type, and has a low T
g of main monomer component, high Tg to give adhesiveness and cohesive strength
Polymers or copolymers mainly composed of a comonomer component described above, or a functional group-containing monomer component for improving crosslinking or adhesion can be used.

The main monomer components include ethyl acrylate, butyl acrylate, amyl acrylate, 2-ethylhexyl acrylate, octyl acrylate, cyclohexyl acrylate, benzyl acrylate, and other alkyl acrylates, butyl methacrylate, and methacrylic acid. Acid 2
-Alkyl methacrylates such as ethylhexyl, cyclohexyl methacrylate, and benzyl methacrylate can be used.

The comonomer components include methyl acrylate, methyl methacrylate, ethyl methacrylate, vinyl acetate, styrene and acrylonitrile.

Examples of the functional group-containing monomer component include carboxyl-containing monomers such as acrylic acid, methacrylic acid, maleic acid, itaconic acid and crotonic acid, 2-hydroxyethyl (meth) acrylate, and 2-hydroxypropyl (meth) acrylate. And hydroxyl group-containing monomers such as N-methylolacrylamide, acrylamide, methacrylamide, and glycidyl methacrylate.

A crosslinking agent is added to a solution of these polymers or copolymers.

Examples of the crosslinking agent include isocyanate-based, epoxy-based, ethyleneimine-based, and aluminum chelate-based crosslinking agents. A type of crosslinking agent capable of reacting with a functional group is selected and added. In the present invention, the JIS-Z-0237 is mainly controlled by controlling the type and amount of the crosslinking agent.
The result of the holding force test can be realized.

The coating amount of the adhesive is preferably in the range of 5 to 50 g / m ² (dry weight), more preferably 10 to 30 g / m ^2.
g / m ² .

According to a preferred embodiment of the present invention, the release sheet 13 is made of a high-quality, glassine-based paper sheet.
3a, a filler layer 13b is provided on the base material 13a in some cases, and a silicone layer 13c as a release agent is applied on the filler layer 13b in an amount of 0.1 to 3 g / m ^2.
It is configured by applying in the range of

The filling layer 13b may be formed by laminating or coating polyethylene, polyvinyl alcohol, clay, alkyd resin, etc. in a thickness of 0.5 to 50 μm. These sealing layers are made of the adhesive sheet 10.
May be further provided on the back surface, which is the surface opposite to the release treatment surface, in order to prevent curling.

As the sheet-like base material 13a, not only paper but also a film may be used, and a polyester film or a polypropylene film coated with a release agent silicone may be used.

The release sheet 13 is preferably slightly larger than the recording sheet 11 and the adhesive layer 12 as shown in FIGS. 1 and 2 from the viewpoint of easy release of the release sheet 13.

Incidentally, between the above-mentioned ink receiving layer 11b and the sheet-like base material 11a, or between the base material 11a and the adhesive layer 1a.
An ink permeation prevention layer may be provided between the two layers. The ink penetration preventing layer is preferably made of a hydrophobic resin for the purpose of preventing the penetration of aqueous ink.

Further, according to a preferred embodiment of the present invention, the release sheet itself has a Gurley-type softness, preferably a Gurley-type softness in the conveying direction of the printer, of 20 to 60.
It is preferably about 0 mgf, more preferably about 30 mgf.
It is about 200 mgf.

[0051]

EXAMPLES On one surface of woodfree paper of Example 1 basis weight 100 g / m ^2, after an ink receiving layer precursor composition is applied in an amount of 20 g / m ^2, dried, the recording sheet (thickness 125 [mu] m, Gurley Formula rigidity 25
3 mgf) were obtained.

Also, 17 g of 50 g / m ² of high quality paper is applied to one side of the high quality paper.
After laminating a polyethylene film having a thickness of μm, 0.8 g / m ^{2 of} silicone was applied to the surface of the laminate.
Was applied and dried to obtain a release paper.

Next, a acrylate copolymer consisting of 97 parts by weight of butyl acrylate and 3 parts by weight of acrylic acid was added with coronate L (manufactured by Nippon Polyurethane Co., Ltd.) as a cross-linking agent in terms of the solid weight with the above-mentioned co-supplier. 100 by ratio
It was added at a ratio of 5.0 and stirred. This mixture is applied onto the release paper-treated surface of the release paper in an amount of 2% after drying.
It was applied so as to be 0 g / m ² and dried. afterwards,
The recording sheet was stuck on the surface of the recording sheet on which the ink receiving layer was not formed to obtain a recording medium.

The thus obtained recording medium had a Gurley-type softness of 632 mgf.

Example 2 A recording medium was obtained in the same manner as in Example 1 except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 3.0 in terms of the solid content ratio.

Example 3 A recording medium was obtained in the same manner as in Example 1, except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 2.0 in terms of the solid content ratio.

Example 4 A recording medium was obtained in the same manner as in Example 1 except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 1.5 in terms of the solid content ratio.

Example 5 A recording medium was obtained in the same manner as in Example 1 except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 1.2 in terms of the solid content ratio.

Example 6 A recording medium was obtained in the same manner as in Example 1 except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 7.0 in terms of the solid content ratio.

Comparative Example 1 A recording medium was obtained in the same manner as in Example 1, except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 1.0 in terms of the solid content ratio.

Comparative Example 2 A recording medium was obtained in the same manner as in Example 1, except that the ratio of the acrylate copolymer to the amount of the crosslinking agent was 100: 0.8 in terms of the solid content ratio.

Comparative Example 3 A recording medium was obtained in the same manner as in Example 1 except that no crosslinking agent was added.

Retention Force Test For the recording media of Examples 1 to 6 and Comparative Examples 1 to 3,
A JIS-Z-0237 holding force test was performed. When the recording medium dropped, the destruction state of the adhesive layer was observed.

The test results were as shown in Table 1 below.

Printer transport test The recording media of Examples 1 to 6 and Comparative Examples 1 to 3 were cut out to A4 size, and the ink jet printer MJ-700V
2C (manufactured by Seiko Epson Corporation), and the recording medium was conveyed. Note that this printer is substantially the same as FIG.
The paper feed roller 1 has a radius of 16 mm and the center angle of the arc is 156 degrees. The distance between the sheet guide and the recording head is 2.5 mm.
Immediately after the recording medium was sent out from the paper feed roller, the conveyance was stopped, and the height of the leading end of the stationary recording medium from the sheet guide, that is, the lifting due to the warpage of the adhesive sheet (see h in FIG. 3) was measured. . At this time, the recording head was at the home position. After that, the conveyance was restarted, and printing was performed on the recording medium by the recording head to output an image. At that time, the presence or absence of contact of the recording medium with the recording head was confirmed.

The results were as shown in Table 1 below.

[0067]

[Table 1]

[0068]

[Table 2]

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a recording medium according to the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a schematic diagram of a specific example of a printer including a recording head that performs recording in a non-contact state with a recording medium and a unit that changes a conveyance direction of the recording medium in the printer.

FIG. 4 is a cross-sectional view illustrating a state in which the recording medium 10 is wound around a paper feed roller 1;

FIG. 5 is a partially enlarged view of the recording medium of FIG. 2;

FIG. 6 (a) shows a Gurley tester capable of measuring Gurley rigidity, and FIG. 6 (b) shows a main part of the Gurley tester of FIG. 6 (a).

FIG. 7 is an automatic crimping apparatus used for a JIS-Z-0237 holding force test. (A) is an overall view of the device,
(B) is an enlarged view of the roller part of (a). In the figure,
Reference numeral 71 denotes a roller, and the surface of the roller is covered with a rubber layer 72. Reference numeral 73 denotes a motor, and reference numeral 74 denotes a gear. The roller has a diameter d of about 83 mm and a width l of 4
5 mm. The thickness e of the rubber layer 72 is about 6 mm.

FIG. 8 is a manual crimping device used for a JIS-Z-0237 holding force test. In the figure, reference numeral 81 denotes a roller;
2 is a handle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Recording medium 11 Recording sheet 12 Adhesive layer 13 Release sheet 1 Paper feed roller 2, 3, and 4 Pressure contact roller 5 Sheet guide 6 Recording head 7a and 7b Discharge roller

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical indication location G09F 3/10 B41M 5/00 B // B41M 5/00 B41J 3/04 101Y D21H 5/00 Z (72) Inventor Tetsuyuki Utagawa 5207 Shimon 5120 Shiba, Kawaguchi City, Saitama Prefecture

Claims (8)

[Claims] 1. A recording medium comprising: a recording sheet; an adhesive layer formed of an adhesive formed on one surface of the recording sheet; and a release sheet provided on the adhesive layer. Softness is 200mgf ~ 1500m
gf; the adhesive is an acrylic cross-linkable adhesive;
In the IS-Z-0237 retention test, the time to drop is 500 minutes or more, or the time to drop is 5 minutes.
A recording medium that breaks and falls at the interface between the adherend and the adhesive layer when the time is less than 00 minutes. 2. When the time required for the pressure-sensitive adhesive sheet to fall in the JIS-Z-0237 holding force test is 500 minutes or more, the pressure-sensitive adhesive sheet is broken and falls in the pressure-sensitive adhesive layer, or the interface between the adherend and the pressure-sensitive adhesive layer. It is destroyed by and falls
The recording medium according to claim 1. 3. The acrylic crosslinkable pressure-sensitive adhesive comprises a crosslinker selected from the group consisting of isocyanate crosslinkers, epoxy crosslinkers, ethyleneimine crosslinkers, and aluminum chelate crosslinkers. The recording medium according to claim 1. 4. A printer comprising: a recording head for performing recording in a non-contact state with a recording medium; and means for changing a conveyance direction of the recording medium in the printer while drawing an arc.
The recording medium according to any one of claims 1 to 3, which is used for a printer having a central angle of the arc of about 120 to about 200 degrees and a radius of the arc of about 10 to about 50 mm. 5. The distance between a recording medium and a recording head is about 1 mm or more.
The recording medium according to claim 4, which is used for a printer that is about 5 mm. 6. The recording medium according to claim 5, wherein said recording head is an inkjet recording head. 7. A printing method for printing on a printing medium, comprising: a printing head for printing in a non-contact state with the printing medium; and a means for changing the transport direction of the printing medium in the printer while drawing an arc. The recording medium according to any one of claims 1 to 3, wherein a central angle of the arc is about 120 to about 200 degrees and a radius of the arc is about 10 to about 50 mm. And a step of performing recording on the recording medium by the recording head. 8. The recording method according to claim 7, wherein said recording head is an ink jet recording head.