JP2000037992A - Transfer sheet and its manufacture, image formation and transfer method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To increase the quality grade without generating reticulation by specifying the surface-coating rate of an adhesive layer for a transfer layer when a supporting body is separated by dipping in water. SOLUTION: For a transfer sheet comprising at least a water-permeable supporting body, a release layer, an adhesive layer, and a transfer layer, the surface-coating rate of the adhesive layer for the transfer layer when the supporting body is separated by dipping in water, is made 90% or higher, preferably 92% or higher. For the transfer sheet, the surface-coating rate of the adhesive layer for the release layer is made 40% or higher, preferably 45-70%. After an image is formed on the surface of the transfer layer with a toner, an ink and a dye or the like, the transfer sheet is dipped in water, and the release layer is dissolved, and the supporting body and the adhesive layer are separated, and by sticking a film comprising the transfer layer and the adhesive layer to a material to be transferred, the transfer of the image is performed. Thus, the transfer sheet without generating reticulation can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic copying machine having a process of electrostatically transferring a toner image to a transfer material such as plain paper by a xerography method, and a method of applying a heat transfer recording method to a transfer material by a thermal transfer recording method. By a printer or an inkjet system having a step of transferring a fusible ink, a sublimation dye, etc.,
The present invention relates to a transfer sheet used in a printer (hereinafter, abbreviated as a copying machine) having a process of transferring an aqueous ink or a hot-melt ink to a material to be transferred, and more particularly to an image on a transfer sheet formed by a copying machine. The present invention relates to a transfer sheet used in a process of retransferring to another substrate such as cloth, canvas, plastic, paper, wood, leather, glass, pottery, metal, and the like. The invention also relates to an image forming method and an image transfer method using the same.

[0002]

2. Description of the Related Art With the spread and development of copying apparatuses in recent years, attempts have been made to develop new applications not only by simply forming a copy image on plain paper but also by applying the functions thereof. I have.

As one of such new uses, an image created by a copying machine is retransferred and fixed to another base material such as cloth, leather, canvas, plastic, wood, glass, pottery, and metal. There are examples. This type of use is useful for non-mass-produced individuals or small lots of goods such as tailor-made T-shirts, sweatshirts, aprons, jumpers, cups, plates, stained glass, panels, and reproductions. In recent years, it has become possible to use a full-color copying apparatus capable of obtaining a high-quality image, so that a higher-quality image can be easily printed, and the demand is increasing.

As a transfer sheet for forming a transfer image by transferring a toner, a heat-meltable ink, a sublimation dye, an aqueous ink, etc. to such a material to be transferred, for example, Japanese Patent Application Laid-Open No.
There is a transfer sheet disclosed in JP-A-82509 and a transfer sheet using a delayed tack type adhesive as an adhesive layer. However, since the transfer sheet requires at least either heat or pressure at the time of transfer, there is a problem that transfer is difficult to a heat-sensitive material such as plastic or a curved surface where it is difficult to apply uniform pressure. there were. On the other hand, the hydraulic transfer paper disclosed in JP-A-8-108610 is composed of a water-permeable backing sheet, a release layer, an adhesive layer, and an image holding layer. After the image is formed by a copying machine, the hydraulic transfer paper is immersed in water. Since the release layer is melted to release the backing paper and the film composed of the transfer layer and the adhesive layer floating on the water surface is transferred to the material to be transferred, heat or pressure is not required during transfer. However, the transfer sheet may have a wrinkle in the form of a thin film as shown in FIG. 1 (hereinafter, referred to as wrinkle in the present invention) on the surface of the transfer layer. When such a wrinkle is present, a feeling of sticking the film is noticeable, and the quality after transfer is remarkably impaired. Therefore, a transfer sheet free of the wrinkle has been demanded.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide a transfer sheet free of wrinkles.

[0006]

Means for Solving the Problems The present inventors have ascertained that the occurrence of wrinkles is affected by the state of the adhesive layer, and as a result of intensive studies, as a result, the transfer layer in the transfer layer when the support is peeled off with water. The inventors have found that the above problems can be solved by setting the surface coverage of the adhesive layer to 90% or more, and have reached the present invention.

That is, the present invention provides the following (1) to (12). (1) at least a water-permeable support, a release layer, an adhesive layer,
In the transfer sheet comprising the transfer layer, the surface coverage of the adhesive layer in the transfer layer when the support is peeled off by dipping in water is 9
A transfer sheet characterized by being at least 0%. (2) at least a water-permeable support, a release layer, an adhesive layer,
A transfer sheet comprising a transfer layer, wherein the surface coverage of the adhesive layer in the release layer is 40% or more. (3) The transfer sheet according to the above (1) or (2), wherein an acrylic pressure-sensitive adhesive is used as the adhesive layer. (4) The dry adhesion amount of the adhesive layer is 1 g / m ² or more and 30 g / m ^2.
The transfer sheet according to any one of the above (1) to (3), wherein: (5) The method for producing a transfer sheet according to any one of the above (1) to (4), wherein a solvent-based solution is used as a coating solution for the adhesive layer. (6) A viscosity of 50 × 10 ⁻³ Pa. s
The method for producing a transfer sheet according to any one of the above (1) to (5), wherein the adhesive layer coating solution is used. (7) An image forming method for forming a toner image on an image receptor using an electrophotographic method, wherein the image receptor is the transfer sheet according to any one of the above (1) to (4), An image forming method, comprising fixing a toner to an image receptor by at least either heat or pressure. (8) An image forming method for transferring a heat-fusible ink layer or a heat sublimable dye onto a receptor by heat, wherein the image receptor is any one of the above (1) to (4). An image forming method, which is a transfer sheet. (9) An image forming method for forming an image of a water-based ink or a hot-melt ink on an image receptor using an inkjet method, wherein the image receptor is any one of the above (1) to (4). An image forming method, which is the transfer sheet according to any one of the preceding claims. (10) An image transfer method for transferring an image recorded on a transfer sheet to a material to be transferred, wherein the transfer sheet is as described in (1) above.
The transfer sheet according to any one of (1) to (4),
An image transfer method comprising transferring a transfer sheet on which an image has been formed by the method according to the above (7). (11) In an image transfer method for transferring an image recorded on a transfer sheet to a material to be transferred, the transfer sheet may be as described in (1) above.
The transfer sheet according to any one of (1) to (4),
An image transfer method comprising transferring a transfer sheet on which an image has been formed by the method according to the above (8). (12) An image transfer method for transferring an image recorded on a transfer sheet to a material to be transferred, wherein the transfer sheet is as described in (1) above.
The transfer sheet according to any one of (1) to (4),
An image transfer method comprising transferring a transfer sheet on which an image has been formed by the method according to the above (9).

Further, the present invention provides the following (13) to (1)
Mode 7) is included. (13) The transfer sheet as described in any one of (1) to (4) above, wherein the transfer layer material is an aqueous emulsion. (14) The above (1), wherein the transfer layer material is a polymer comprising at least one of ethylene, vinyl acetate, acrylic acid, methacrylic acid and acrylate or a copolymer containing at least one material.
To (4) and (13). (15) The dry adhesion amount of the transfer layer is 5 g / m ² or more and 100 g.
/ M ² or less, the transfer sheet according to any one of the above (1) to (4) and (13) to (14). (16) The dry adhesion amount of the release layer is 1 g / m ² or more and 50 g /
(1) to (4), wherein m is ² or less.
And the transfer sheet according to any one of (13) to (15). (17) The water-permeable support has a basis weight of 20 g / m ² or more and 20
(1) characterized in that the paper is 0 g / m ² or less.
To (4) and (13) to (16).

Hereinafter, the present invention will be described in more detail. The transfer sheet of the present invention has a surface coverage of the adhesive layer of the transfer layer of at least 90 when the support is peeled off by immersion in water in a transfer sheet comprising at least a water-permeable support, a release layer, an adhesive layer and a transfer layer. % Or more, preferably 92% or more, or in a transfer sheet comprising at least a water-permeable support, release layer, adhesive layer and transfer layer, the surface coverage of the adhesive layer in the release layer is 40% or more, preferably Is 45-
70% of the transfer sheet.

In the transfer sheet having the above structure, an image is formed on the surface of the transfer layer with toner, ink, dye, or the like, and then immersed in water. The image is transferred by attaching a film composed of the adhesive layer to the material to be transferred.

Here, the surface coverage of the adhesive layer in the transfer layer when the support is peeled off by immersing it in water is set to 90% or more, or the surface coverage of the adhesive layer in the release layer is 40% or more.
% Or more, it is possible to provide a transfer sheet free of wrinkles. In other words, when the coverage of the adhesive layer in the release layer is low during the production of the transfer sheet, the release layer is exposed from the gap between the adhesive layers, and when the transfer layer is applied thereon, the difference in wettability between the adhesive layer and the release layer causes a slippage. This is to cause wrinkles.

In the present invention, the surface coverage of the adhesive layer in the transfer layer when the support was peeled off by immersion in water was measured as follows. That is, the transfer sheet is heated to a temperature of 2
After immersion in tap water at 0 ° C. for 3 minutes, the film comprising the adhesive layer and the transfer layer was carefully peeled off from the support, and the surface of the adhesive layer was lightly washed and dried at a temperature of 20 ° C. and a humidity of 65% for one day.
After that, the sample film is applied to the OLYMP
US company MEASURING MICROSCO
Observe only the reflected light with PE STM at a maximum magnification of 30 times the amount of light, and observe the image with the SONY sublimation printer CVP-M.
3 output. This image is displayed on an IBM PC (7
50-P100) connected to SHARP scanner JX-250 (full color, resolution 100 dpi, all other conditions are standard settings), and Adobe Ph.D.
Using a photoshop, binarization was performed at the threshold value 32, and the coverage of the white portion was measured. On the other hand, the surface coverage of the adhesive layer in the release layer was determined as follows. That is, a sample in which a release layer and an adhesive layer are sequentially applied on a support is referred to as OL.
Microscope MEASURING MICRO manufactured by YMPUS
SCOPE STM: only reflected light, maximum 30 magnification
Observation at × 2, and the image is sublimation printer CV manufactured by SONY.
Output by PM3. This image was converted to a SHARP scanner JX-250 (gray scale, resolution 100d) connected to an IBM personal computer (750-P100).
pi, all other conditions are standard settings), Adobe
2 using a threshold of 180 using Photoshop
It was digitized and the coverage of the white portion was measured.

To increase the surface coverage of the adhesive layer, it is effective to increase the wettability of the coating liquid. One method is to use a solvent-based solution as the adhesive layer coating solution. That is,
Since the solvent-based coating liquid has a lower surface tension than the aqueous coating liquid, it is easily wet when applied, and can be applied uniformly. Another effective method is to add a surfactant to the aqueous coating solution to lower the surface tension. On the other hand, the use of a high-viscosity adhesive layer coating liquid makes it unlikely that repelling will occur after coating, so that the surface coverage of the adhesive layer can be increased.

The viscosity of the adhesive layer solution is preferably 50 × 10
^-3 Pa. s or more, more preferably 100 × 10 ⁻³ P
a. s or more. The viscosity of the adhesive layer coating solution is 50 × 10 ^-3
Pa. If it is less than s, wrinkles tend to occur. The viscosity in the present invention refers to the viscosity of a coating solution at 20 ° C., which is an E-type viscometer “VISCONIC E” manufactured by Toki Sangyo Co., Ltd.
HD "at a rotor rotation speed of 10 rpm.

On the other hand, an acrylic pressure-sensitive adhesive as an adhesive layer material has higher transparency than rubber-based pressure-sensitive adhesives,
Since it has excellent solvent resistance and is less expensive than a silicone-based pressure-sensitive adhesive, it can be suitably used.

Here, the following materials can be used for the adhesive layer in the present invention. Specifically, natural rubber, styrene / butadiene copolymer rubber, polyisobutylene rubber, isobutylene / isoprene copolymer rubber, styrene / isoprene / styrene block copolymer rubber, styrene / butadiene / styrene block copolymer rubber, chloroprene rubber, butadiene / acrylonitrile Rubber-based adhesives such as copolymer rubber and polybutadiene rubber, polymethyl methacrylate, polymethyl acrylate, polyethyl acrylate, polybutyl acrylate, poly (2-
Acrylic adhesives such as polyoctyl acrylate such as ethylhexyl) acrylate or copolymers thereof, vinyl ether adhesives such as polyvinyl ethyl ether, polyvinyl butyl ether and polyvinyl isobutyl ether, and silicone adhesives such as polydimethylsiloxane. Among them, acrylic pressure-sensitive adhesives are particularly preferable as described above.

The dry adhesion amount of the adhesive layer is 1 g / m ² or more and 30
g / m ² or less, more preferably 2 g / m ² or more and 20 g / m ² or less. When the amount is less than 1 g / m ² , not only the adhesive strength is insufficient, but also the peeling layer surface is insufficiently covered with the adhesive layer, so that wrinkles are likely to occur.
When the amount is more than g / m ² , not only is production cost increased, but also
When the sheet is stored, the adhesive protrudes and the sheets are easily adhered to each other.

As the solvent used for the solvent-based adhesive layer coating solution, the following materials can be used. Specifically, pentane, n-hexane, cyclohexane,
Heptane, octane, dichloromethane, chloroform,
Benzene, toluene, xylene, acetone, methyl ethyl ketone, ethyl acetate, methanol, ethanol, n-
Propyl alcohol, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol, t-butyl alcohol and the like.

The following materials can be used for the transfer layer in the present invention. Specifically, cellulose derivatives such as thermoplastic polyurethane, polyamide, polyester, polyolefin and cellulose nitrate; styrene resins or styrene copolymers such as polystyrene and poly-α-methylstyrene; poly (meth) acrylate, poly (meth) acrylate ) Acrylic resins such as ethyl acrylate; vinyl copolymers such as vinyl chloride vinyl acetate copolymer and ethylene vinyl alcohol copolymer; rosin ester resins such as rosin and rosin-modified maleic resin; polyisoprene rubber; styrene butadiene rubber Such as natural,
Alternatively, in addition to synthetic rubbers and various ionomers, epoxy resins, phenol resins, and the like are used.

The polyurethane includes isocyanates,
Includes thermoplastic polyurethanes obtained by reaction with polyols whose molecular ends are hydroxyl groups. Isocyanates include, for example, tolylene diisocyanate,
Aromatic diisocyanates such as diphenylmethane-4,4'-diisocyanate; aliphatic diisocyanates such as isophorone diisocyanate; aliphatic diisocyanates such as trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, and dodecamethylene diisocyanate. The polyol includes a polyhydroxy compound such as an alkane polyol, a polyester polyol, and a polyether polyol. At least one of these polyhydroxy compounds is used. Examples of the alkane polyol include alkanediols such as 1,5-pentanediol, 1,8-octanediol, 1,10-decanediol, and 1,12-dodecanediol. Examples of the polyester polyol include an aliphatic polyester diol, for example, a polyester polyol containing, as a structural unit, any one of an aliphatic diol and an aliphatic dicarboxylic acid described below. Examples of the polyether polyol include polyether diols such as diethylene glycol, triethylene glycol, polyethylene glycol, tripropylene glycol, polypropylene glycol, and an addition compound of bisphenol A and an alkylene oxide such as ethylene oxide. As the polyamide, for example, nylon 6, nylon 11, nylon 12, nylon 1
3, nylon 610, nylon 612, nylon 616
And copolymerized nylon using these nylon raw materials (for example, nylon 6/12).

The polyester includes a polyester containing any one of an aliphatic diol and an aliphatic dicarboxylic acid as a constituent unit, and particularly an aliphatic polyester containing an aliphatic diol and an aliphatic dicarboxylic acid as constituent components. Preferred polyesters often contain units of saturated aliphatic carboxylic acids. Examples of the aliphatic diol component include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol,
Tripropylene glycol, polypropylene glycol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, 1,6-hexanediol, polymethylene glycol and the like are included, and as the aliphatic dicarboxylic acid component, for example, Examples include unsaturated aliphatic dicarboxylic acids such as maleic acid and fumaric acid, and saturated aliphatic dicarboxylic acids such as succinic anhydride, adipic acid, azelaic acid, sebacic acid, suberic acid, and dodecane diacid.

Examples of the polyolefin include polyethylene such as low-density polyethylene and linear low-density polyethylene, ethylene-butene-1 copolymer, ethylene- (4-
Methylpentene-1) copolymer, ethylene-vinyl acetate copolymer, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylate copolymer, propylene-
Butene-1 copolymer, ethylene-propylene copolymer,
Modified polyolefins such as ethylene-propylene-butene-1 copolymer and anhydrous maleic are exemplified. Preferred polyolefins include modified polyolefins and the like.

The transfer layer in the present invention may contain a tackifier, an antioxidant, an ultraviolet absorber, a colorant, an antistatic agent, a flame retardant, a wax, a plasticizer, a filler, and the like, if necessary. Good.

The dry adhesion amount of the transfer layer is 5 g / m ² or more and 10
0 g / m ² or less, more preferably 10 g / m ²
Not less than 50 g / m ² . If the amount is less than 5 g / m ² , the strength of the transfer layer is insufficient, so that the transfer layer tends to be wrinkled and to be easily cut when attached to the transfer material. On the other hand, 100 g /
If it is larger than m ² , the image will be unnatural when transferred because it is too thick, and transport failure in the copying apparatus will easily occur.

On the other hand, the following materials can be used for the release layer in the present invention. Specifically, synthetic polymers such as polyvinyl alcohol, polyethylene oxide, polyacrylamide, polyacrylamine, and polyvinylpyrrolidone; natural starch such as potato starch, tapioca starch, and corn starch; and oxidized, pregelatinized, etherified, and esterified starch Processed starch, cellulose derivatives such as carboxymethylcellulose and methylcellulose, proteins, gelatin, glue, casein, shellac, gum arabic, dextrin and the like.

The release layer in the present invention may be a single layer, or may be composed of a plurality of layers made of a plurality of water-soluble materials, fillers, etc. for the purpose of improving coating properties and transfer layer surface smoothness. Including things.

The dry adhesion amount of the release layer is 1 g / m ² or more and 50
g / m ² or less. Support and the adhesive layer will not be able to peel adhered is less than 1 g / m ^2, a peeling speed takes time lysed to release layer is more than 50 g / m ² is too thick tends to decrease.

The support used in the present invention may be paper,
Synthetic paper, cloth, non-woven fabric, leather, polyethylene terephthalate, diacetate cellulose, triacetate cellulose, acrylic polymer, cellophane, celluloid,
Examples thereof include resin sheets such as polyvinyl chloride, polycarbonate, polyimide, polyether sulfone, polyethyl ether ketone, polyethylene, and polypropylene, metal plates, and metal foils. Further, a composite sheet produced by appropriately combining these materials and a sheet having water resistance and conductivity imparted thereto by coating or laminating can be used without any particular limitation. Preferably, a paper having a basis weight of 20 g / m ² or more and 200 g / m ² or less is used in terms of economy, transport stability in a copying apparatus, and water permeability.

By the way, as a preferred embodiment of the present invention, by using an aqueous emulsion for the transfer layer or the adhesive layer material and an aqueous solution for the release layer, there is no volatilization of the organic solvent at the time of preparing the transfer sheet, and it is environmentally friendly. Although it is possible to manufacture a transfer sheet at low cost, regarding the transfer layer and the adhesive layer material as described above, in consideration of film forming properties, coating properties, etc.,
It is also possible to use a solvent-based material.

To form a release layer, an adhesive layer, and a transfer layer,
A coating solution prepared by dissolving, dispersing, or emulsifying a material for forming each layer in water or a suitable solvent is applied to a coater such as a roll coater, a blade coater, a wire bar coater, an air knife coater, a rod coater, and a die coater. It is formed by coating on a support by using it appropriately. Alternatively, it may be formed by laminating on a support using a hot melt coater, a laminate coater or the like.

In order to form an image on the transfer sheet of the present invention, not only the above-described electrophotographic recording, thermal transfer recording, thermal transfer recording using a heat sublimable dye, and ink-jet recording, but also offset printing can be used. Various printing methods such as printing, letterpress printing, intaglio printing, and stencil printing, as well as recording methods such as electrostatic recording, dot impact recording, and handwriting can be appropriately selected and applied.

[0032]

EXAMPLES Hereinafter, the present invention will be described in more detail based on examples, but the present invention is not limited to these examples. The number of parts in the examples represents parts by weight.

Example 1 A high-quality paper having a basis weight of 93 g / m ² was used as a support, and a release layer material (A) having the following composition was applied to one surface of the support with a wire bar, dried, and dried. Application amount 11g / m
² ) was provided. [Material for release layer (A)] Polyvinyl alcohol (KL-506, manufactured by Kuraray Co., Ltd.) 20 parts Water 80 parts On top of the release layer obtained above, a solvent-based adhesive layer material (A) comprising the following monomer composition ) (Viscosity 266 × 10 ^-3 P
a. s) was applied with a wire bar and dried to form an adhesive layer (dry coating amount: 8 g / m ² ). [Adhesive layer material (A)] 2-ethylhexyl acrylate 45 parts Butyl acrylate 20 parts Vinyl acetate 18 parts Ethyl acrylate 15 parts Itaconic acid 2 parts Toluene 236 parts Ethyl acetate 236 parts

On the adhesive layer obtained above, an acrylic transfer layer material (A) having the following monomer composition was applied with a wire bar and dried to obtain a transfer layer (dry coating amount: 53 g /
m ² ) to prepare a transfer sheet (a) of the present invention. [Transfer layer material (A)] Butyl acrylate 23 parts Ethyl acrylate 47 parts Acrylonitrile 30 parts Water 92 parts The obtained transfer sheet (a) had no wrinkles. A full color image was formed on the transfer layer by using a color copying machine (Ricoh, Pretail 550) on the transfer sheet (a). The image formed on the transfer layer was clear and had high image quality, and no difference from the image formed on the plain paper for pretail 550 was recognized.

Next, the transfer sheet (a) obtained above is immersed in water and peeled off. A film composed of an adhesive layer and a transfer layer is placed on the acrylic sheet so that the adhesive layer is in close contact with the acrylic sheet. After the sheet was pulled out and dried, the transfer sheet and the acrylic plate were firmly adhered.

Example 2 In Example 1, a solvent-based adhesive layer material (B) having the following monomer composition (viscosity: 169 × 10 ⁻³ P
a. A transfer sheet (b) was prepared in the same manner as in Example 1 except that s) was used. [Adhesive layer material (B)] 2-ethylhexyl acrylate 45 parts Butyl acrylate 20 parts Vinyl acetate 18 parts Ethyl acrylate 13 parts Itaconic acid 4 parts Toluene 213 parts Hexane 71 parts

Example 3 In Example 1, an aqueous adhesive layer material (C) (having a viscosity of 456 × 10 ⁻³ Pa.
A transfer sheet (c) was prepared in the same manner as in Example 1 except that s) was used. [Material for adhesive layer (C)] 2-ethylhexyl acrylate 80 parts Methyl methacrylate 15 parts Itaconic acid 10 parts Water 105 parts

Example 4 A transfer sheet (d) was prepared in the same manner as in Example 1 except that the dry coating amount of the adhesive layer was changed to 1 g / m ² .

Example 5 In Example 1, the dry coating amount of the adhesive layer was changed to 16 g / m ^2.
Transfer sheet (e) in the same manner as in Example 3 except that
It was created.

Comparative Example 1 In Example 1, an adhesive layer material (D) (having a viscosity of 31 × 10 ⁻³ P) having the following monomer composition was used as the adhesive layer material.
a. A transfer sheet (f) was prepared in the same manner as in Example 1 except that s) was used. [Material for adhesive layer (D)] 2-ethylhexyl acrylate 80 parts Methyl methacrylate 15 parts Itaconic acid 10 parts Water 234 parts

The transfer sheets (a) to (f) obtained as described above
And the coverage of the adhesive layer in the transfer layer and the coverage of the adhesive layer in the release layer when the support was peeled off in water. On the other hand, the transfer sheets (a) to (f) are immersed in water at 20 degrees Celsius after forming a full-color image on a transfer layer using a color copying machine (manufactured by Ricoh, Pretail 550), and the transfer is performed after the support is peeled off. The film composed of the layer and the adhesive layer was stuck on an acrylic plate, and the wrinkles were evaluated. ○: no wrinkles exist ×: wrinkles exist

[0042]

[Table 1]

[0043]

As is apparent from the detailed and concrete description, the transfer sheet of the present invention exhibits an extremely excellent effect of high quality without the presence of wrinkles.

[Brief description of the drawings]

FIG. 1 is a micrograph showing wrinkles on a conventional transfer paper. (30x magnification)

Claims (12)

[Claims] 1. At least a water-permeable support, a release layer,
A transfer sheet comprising an adhesive layer and a transfer layer, wherein the surface coverage of the adhesive layer in the transfer layer when the support is peeled off by immersion in water is 90% or more. 2. At least a water-permeable support, a release layer,
A transfer sheet comprising an adhesive layer and a transfer layer, wherein the surface coverage of the adhesive layer in the release layer is 40% or more. 3. The transfer sheet according to claim 1, wherein an acrylic pressure-sensitive adhesive is used as the adhesive layer. 4. The dry adhesion amount of the adhesive layer is 1 g / m ² or more.
4. The amount is not more than 0 g / m ^2.
The transfer sheet according to any one of the above. 5. The method for producing a transfer sheet according to claim 1, wherein a solvent-based solution is used as the adhesive layer coating liquid. 6. The adhesive layer coating liquid having a viscosity of 50 × 10 ^−3.
Pa. The method for producing a transfer sheet according to any one of claims 1 to 5, wherein at least s of the adhesive layer coating solution is used. 7. An image forming method for forming a toner image on an image receptor using an electrophotographic method, wherein the image receptor is the transfer sheet according to claim 1 and an image forming method. An image forming method comprising fixing a toner to a receptor by at least either heat or pressure. 8. An image forming method for transferring a heat-fusible ink layer or a heat-sublimable dye onto a receptor by heat.
An image forming method, wherein the image receptor is the transfer sheet according to any one of claims 1 to 4. 9. An image forming method for forming an image of a water-based ink or a hot-melt ink on an image receptor by using an ink jet method, wherein the image receptor is any one of claims 1 to 4. An image forming method. 10. An image transfer method for transferring an image recorded on a transfer sheet to a material to be transferred, wherein the transfer sheet is the transfer sheet according to claim 1. Transferring a transfer sheet on which an image has been formed by the method of claim 1. 11. An image transfer method for transferring an image recorded on a transfer sheet to a material to be transferred, wherein the transfer sheet is the transfer sheet according to claim 1. Transferring a transfer sheet on which an image has been formed by the method of claim 1. 12. An image transfer method for transferring an image recorded on a transfer sheet to a material to be transferred, wherein the transfer sheet is the transfer sheet according to any one of claims 1 to 4. Transferring a transfer sheet on which an image has been formed by the method of claim 1.