JPH11123879A - Roll type thermal transfer image receiving sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll type thermal transfer image receiving sheet, in which an image is formed at a desired position in a correct direction when a mark for post card and the like exists or a half-cut is formed by a seal type image receiving sheet, upon printing by a printer, mounting the roll type thermal transfer image receiving sheet. SOLUTION: A detecting mark 2 is provided on a margin part 3 of a thermal transfer image receiving sheet, which is cut and removed after finishing printing, whereby the detecting mark 2 is read by a printer to superpose various kinds of colors. In this case, the deviation of color in the thermal transferred image or positional deviation between the printed picture and a printing part 5, such as postal number and the like, or a half cut can be prevented. On the other hand, when the detecting mark 2 is read to cut the roll type thermal transfer image receiving sheet 1, on which the picture is formed already, into a desired size, mismatching between the cutting position of the roll type thermal transfer image receiving sheet 1 and the printed image, mark 5 for post card or the position of half cut can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll-shaped thermal transfer image-receiving sheet which forms an image by superimposing it on a heat-transfer sheet and thermally transferring a color material, and more specifically, prints with a printer equipped with the roll-shaped image receiving sheet. At that time,
The present invention relates to a roll-shaped thermal transfer image receiving sheet on which an image is accurately formed at a desired position and direction.

[0002]

2. Description of the Related Art Heretofore, characters and images have been formed on an object to be transferred by using a thermal transfer system. As the thermal transfer method, a heat-sensitive sublimation transfer method and a heat-sensitive fusion transfer method are widely used. Of these, the thermal sublimation transfer method uses a sublimable dye as a coloring material, and uses a heating device such as a thermal head that controls the heat generation in accordance with image information to form a dye in the sublimable dye layer on the thermal transfer sheet. And a method in which an image is formed by transferring to a transfer receiving body such as a thermal transfer image receiving sheet. In the thermal sublimation transfer system, the transfer amount of the dye can be controlled in dot units by heating for an extremely short time.
The image formed in this way is very clear because the coloring material used is a dye, and is excellent in transparency, so the obtained image is excellent in halftone reproducibility and gradation,
An extremely high-definition image can be obtained. Therefore, a high-quality image comparable to a full-color silver halide photograph can be obtained.

[0003] Due to the development of various hardware and software related to multimedia, this thermal transfer method is a full color hard copy of computer graphics, a still image by satellite communication, and an analog image such as a digital image and video such as a CDROM and the like. As a system, its market is expanding. The specific application of the thermal transfer image receiving sheet by the thermal transfer method is wide-ranging. Typical examples are print proofs, image output, CAD / CAM and other design and design outputs, various medical analysis devices such as CT scans and endoscope cameras, output applications for measurement devices, and instant applications. As an alternative to photos, output of ID photos, ID cards, credit cards, and other photos on cards, as well as composite photos at amusement facilities such as amusement parks, game centers, museums, and aquariums, commemorative photos, and postcards Also, there are other uses such as a message card, a calendar, and a system organizer.

[0004] Further, with the diversification of applications as described above, it is affixed to an arbitrary object. For example, a receiving layer on which an image is formed and a substrate are separated via a pressure-sensitive adhesive layer. A thermal transfer image receiving sheet having a configuration capable of being peeled off from the sheet is used. This is a so-called label or seal type. This thermal transfer image-receiving sheet is used for forming a desired image on a receiving layer, peeling off a substrate having the receiving layer, and attaching the substrate to an arbitrary object.

Conventionally, a thermal transfer image-receiving sheet for sublimation transfer used in a thermal sublimation transfer system has a substrate in which a color material receiving layer is formed on one surface and a back surface slip layer is formed on the other surface. These image receiving sheets were cut into a certain size, and about 50 sheets were put into a cassette as one set, and used by being attached to a printer. In such a case, 2
There has been a problem that a problem caused by the transport system such as a sheet feeding failure such as a sheet insertion or a discharge failure is likely to occur. Recently, printers equipped with a roll-type image receiving sheet have been developed for the purpose of solving these problems and increasing the number of printable sheets. These printers supply an image receiving sheet in a roll form, cut it into a desired size after printing, and use it. The use of such a roll-shaped image receiving sheet solves the problem of poor conveyance, and has an advantage that although the size is determined by the size of the printer, it is relatively easy to achieve a relatively large number of printable sheets.

[0006]

In addition, these sublimation transfer type systems are required to improve picture quality and reduce costs, so
It is considered to be used for applications such as stickers, message cards, calendars, and system organizers. When using a printer equipped with a roll-shaped image receiving sheet for such purposes, a square frame (postcard mark) for describing the printed image and the postal code formed on the non-printed side There is a problem that the position of the half-cut of the design mark or the seal is remarkably shifted, or the direction of the printed image and the design mark formed in advance are reversed. Furthermore, when the rolled image receiving sheet on which an image is formed is cut into a desired size, there is a problem that the cutting position does not match the printed image, the postcard mark, and the half-cut position.

Accordingly, it is an object of the present invention to provide a printer equipped with such a roll-shaped thermal transfer image receiving sheet, in particular, a postcard mark or the like on the side on which the image is not printed, or a half cut with a seal type image receiving sheet. In the case where is formed, the image to be printed and the square frame or half-cut for describing the postal code or the like are significantly shifted, or the image where the cutting position of the roll-shaped thermal transfer image receiving sheet is printed or An object of the present invention is to provide a roll-shaped thermal transfer image-receiving sheet that can prevent misalignment with the position of a postcard mark or a half-cut, that is, forms an image accurately at a desired position and direction.

[0008]

In order to achieve the above object, the present invention relates to a heat transfer image receiving sheet supplied to a printer in a roll state, wherein a detection mark is provided on a blank portion which is cut and removed after printing on the image receiving sheet. Is provided. In the thermal transfer image-receiving sheet, it is preferable that postcard marks and half-cut processing are formed in advance. Further, it is preferable that the detection mark is provided on a side opposite to a printing surface. Further, it is preferable that the detection mark is provided on a surface side on which printing is performed. Further, it is preferable that the detection mark is a through hole.

[0009]

The roll-shaped thermal transfer image-receiving sheet of the present invention is supplied to a printer in a roll state. The detection mark is provided on a margin portion of the image-receiving sheet which is cut and removed after printing is completed. Read it with a printer,
By overlaying colors such as yellow, magenta, cyan, and black, it is possible to prevent color misregistration of the thermal transfer image and misalignment between the image to be printed and the printing portion such as a postal code or half-cut. The detection mark is formed in accordance with a pre-printed portion such as a postal code or a half-cut position. In addition, since the detection mark is provided in the blank portion to be cut and removed after the detection by the printer, the detection mark does not remain on the cut and removed image forming product, and the appearance is not impaired. In addition, the detection mark can be read and cut into a desired size of the roll-shaped thermal transfer image-receiving sheet on which an image is formed, and the cut position of the roll-shaped thermal transfer image-receiving sheet is printed, or a postcard mark, a half-cut position. Can be prevented.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. When the roll-shaped thermal transfer image-receiving sheet of the present invention is used, a printed image is formed at a desired position and in a desired direction without being shifted from a mark such as a postcard on the back side. FIG. 1 shows a configuration diagram of a roll-shaped thermal transfer image receiving sheet 1 according to one embodiment of the present invention. That is,
As the base material 6, the fine void layer 8 was formed on the support 7 via the adhesive layer 10, and the receiving layer 11 was provided on the fine void layer 8 side of the base material 6 via the intermediate layer 12. . Further, an anti-curl layer 9 is provided on the other surface of the base material 6, a writing layer 13 is formed on the anti-curl layer 9, and the detection mark 2 and a zip code frame are further formed on the writing layer 13. The postcard mark 5 is formed. The detection mark 2 is provided in the margin 3 between the portions 4 to be cut after printing.

FIG. 2 shows the structure of a roll type thermal transfer image receiving sheet 1 of a seal type according to another embodiment of the present invention. The receiving layer 11, the base material 6, and the pressure-sensitive adhesive layer 14 are laminated in this order, a seal portion 17 and a release sheet 15, and the release surface of the release sheet 15 and the pressure-sensitive adhesive layer 14 are releasably attached. Margins 3 between the portions 4 to be cut after printing
Are provided with through-hole detection marks 2. FIGS. 3 and 4 show examples of detection marks. In FIG. 3, a postcard mark 5 such as a postal code frame is formed on the roll-shaped thermal transfer image receiving sheet 1, a detection mark is provided on the same surface as the surface on which the postcard mark 5 is formed, and printing is completed. A detection mark is present in the margin 3 which is to be cut and removed later. still,
The margin 3 is sandwiched between portions 4 to be cut after printing.
FIG. 4 shows that a postcard mark 5 such as a postal code frame is formed on the roll-shaped thermal transfer image receiving sheet 1, a detection mark is provided on a surface opposite to the surface on which the postcard mark 5 is formed, and printing is completed. A detection mark is present in the margin 3 which is to be cut and removed later.

FIG. 5 shows a seal type roll-shaped thermal transfer image receiving sheet 1 in which a large number of half cuts 16 are arranged in a square shape, and a through hole is detected in a blank portion 3 which is cut and removed after printing is completed. Mark 2 is provided.
FIG. 6 shows a seal type roll-shaped thermal transfer image receiving sheet 1 in which the shape of the half cut 16 is a combination of a square and an ellipse, and the blank portion 3 which is cut and removed after printing is completed, and the surface on which the half cut 16 is formed. On the opposite side, a detection mark 2 is provided. As shown in FIGS. 3 to 6, the blank portion 3 cut and removed after the printing of the roll-shaped thermal transfer image receiving sheet 1 is formed with a constant width perpendicular to the flow direction of the image receiving sheet. The margin portion to be cut and removed can be formed in parallel to the flow direction of the image receiving sheet.

The roll-shaped thermal transfer image-receiving sheet used in the present invention is basically formed of a receiving layer, a substrate, and a detection mark as described above. Each is described in detail below. (Receiving Layer) The receiving layer 11 of the thermal transfer image-receiving sheet of the present invention comprises:
Various additives such as a release agent are added to a varnish mainly composed of a resin which can easily dye a coloring material, if necessary. Typical resins that can be easily dyed include polyolefins such as polypropylene, halogenated resins such as polyvinyl chloride and polyvinylidene chloride, vinyl resins such as polyvinyl acetate and polyacrylate, and copolymers thereof. Coalesce, polyester resins such as polyethylene terephthalate and polybutylene terephthalate, polystyrene resins, polyamide resins, copolymers of olefins such as ethylene and propylene with other vinyl monomers, polyurethane, polycarbonate, acrylic resin, ionomer, cellulose A single substance such as a derivative or a mixture thereof can be used. Among them, a polyester resin and a vinyl resin are preferable.

The receiving layer may contain various release agents in order to prevent thermal fusion with the thermal transfer image-receiving sheet during image formation. As the release agent, a phosphate ester-based plasticizer, a fluorine-based compound, or silicone oil can be used, and among them, silicone oil is preferred. Various modified silicones such as dimethyl silicone can be used as the silicone oil. Specifically, amino-modified silicone, epoxy-modified silicone, alcohol-modified silicone, vinyl-modified silicone, urethane-modified silicone, or the like may be used, and these may be blended or polymerized by various reactions. One or more release agents are used. The amount of the release agent to be added is preferably 0.5 to 30 parts by weight based on 100 parts by weight of the resin for forming the receiving layer. If the addition amount range is not satisfied, problems such as fusion between the sublimation type thermal transfer sheet and the receptor layer of the thermal transfer image receiving sheet or reduction in printing sensitivity may occur. By adding such a release agent to the receptor layer, the release agent bleeds out on the surface of the receptor layer after the transfer to form a release layer. Further, these release agents may be separately coated on the receiving layer without being added to the receiving layer.

In the formation of the receiving layer, a white pigment, a fluorescent whitening agent, or the like can be added for the purpose of improving the whiteness of the receiving layer to further enhance the sharpness of the transferred image.
The coating of the receiving layer is performed by a general method such as a roll coating method, a bar coating method, a gravure coating method, a gravure reverse coating method, and an extrusion coating method. The coating amount is preferably about 0.5 to 15 g / m ² . Further, such a receiving layer is preferably a continuous coating, but may be formed as a discontinuous coating using a resin emulsion or a water-soluble resin or a resin dispersion.
Further, an antistatic agent may be coated on the receiving layer in order to stabilize the transfer of the thermal transfer printer.

An antistatic layer may be provided on the receiving layer surface or the back surface of the image receiving sheet, or on the outermost surface of both surfaces. Antistatic layer is an antistatic agent, fatty acid ester, sulfate ester, phosphate ester, amides, quaternary ammonium salts,
It can be formed by coating and dissolving or dispersing betaines, amino acids, acrylic resins, ethylene oxide adducts and the like in a solvent. The forming means may be the same as the above-described receiving layer. The coating amount of the antistatic layer is preferably from 0.001 to 0.1 g / m ² when dried.

(Intermediate Layer) An intermediate layer 12 can be provided between the receiving layer and the base material, if necessary. As the middle layer,
Any material may be used for that purpose. For example,
High whiteness can be obtained by using a resin obtained by adding various white pigments to a resin. Further, a fluorescent whitening agent, an antistatic agent and the like can be added as required.
Further, an intermediate layer may be provided as necessary for the purpose of improving the adhesiveness between the base material described later and the above-mentioned receiving layer.
Further, in order to improve the adhesiveness, a pretreatment for providing an intermediate layer such as a corona discharge treatment or an ozone treatment may be performed in advance on the surface of the substrate on which the receiving layer is to be formed.

As the intermediate layer, a layer obtained by curing a thermoplastic resin, a thermosetting resin, or a thermoplastic resin having a functional group by using various curing agents or other methods can be used. Specifically, polyvinyl alcohol, polyvinylpyrrolidone, polyester, chlorinated polypropylene,
Modified polyolefins, urethane resins, acrylic resins, polycarbonates, ionomers, resins obtained by curing monofunctional and / or polyfunctional hydroxyl-containing prepolymers with isocyanate or the like can be used. To these resins, titanium oxide, calcium carbonate, barium sulfate and other known inorganic pigments and organic fillers, additives such as fluorescent brighteners, etc., in order to impart functions such as whiteness and concealing properties as necessary. Can be added. The coating thickness is 0.5 to 30
It is preferably about μm.

(Substrate) Substrate 6 used for thermal transfer image-receiving sheet
As the various types of paper, synthetic paper, plastic sheets, and the like, the above-described receiving layer may be formed directly or via a primer layer, but has higher printing sensitivity and has no density unevenness or white spots. In order to obtain high image quality, the existence of the layer 8 having fine voids is indispensable. As the layer having fine voids, a plastic sheet or synthetic paper having fine voids inside can be used. Further, a layer having fine voids can be formed on various supports 7 by various coating methods. As a plastic sheet or synthetic paper having fine voids, a polyolefin, particularly polypropylene, is mainly used, and a polymer incompatible with an inorganic facial and / or polypropylene is blended, and these are used as a void formation initiator, and a mixture thereof is used. Is preferably a plastic sheet or a synthetic paper formed by stretching. When these are mainly composed of polyester, etc., because of their viscoelastic or thermal properties, cushioning properties and heat insulation properties are inferior to those mainly composed of polypropylene, so that printing sensitivity is poor, and Density unevenness is also likely to occur.

Taking these points into consideration, the elastic modulus of plastic sheets and synthetic paper at 20 ° C. is 5 × 10 ⁸ P
a to 1 × 10 ¹⁰ Pa is preferable. These plastic sheets and synthetic papers are usually formed by biaxial stretching. Therefore, they shrink by heating.
The shrinkage when these are left at 110 ° C. for 60 seconds is
0.5% to 2.5%. The above-mentioned plastic sheet or synthetic paper may itself be a single layer including layers having fine voids, or may have a multilayer structure. In the case of a multi-layer configuration, all of the constituent layers may contain fine voids, or a layer having no fine voids may exist. And on this plastic sheet or synthetic paper,
If necessary, a white pigment may be mixed as a hiding agent. In order to increase whiteness, an additive such as a fluorescent whitening agent may be provided. A layer having fine voids has a thickness of 30 to 80 μm.
m is preferred.

As the layer having fine voids, it is also possible to form a layer having fine voids on a support by a coating method. As plastic resin to be used, polyester, urethane resin, polycarbonate,
Known resins such as acrylic resin, polyvinyl chloride, polyvinyl acetate and the like can be used alone or in combination of two or more. The support 7 may be a conventionally known one. Various types of paper such as high-quality paper, coated paper, art paper, cast-coated paper, glassine paper, synthetic paper, non-woven fabric, and plastic sheets such as polyethylene terephthalate, acrylic, polyethylene, and polypropylene, etc. Can be used.

If necessary, the substrate may be made of a resin such as polyvinyl alcohol, polyvinylidene chloride, polyethylene, polypropylene, modified polyolefin, polyethylene terephthalate, polycarbonate or the like, or synthetic paper, which is opposite to the surface on which the support layer is provided. An anti-curl layer 9 can be provided on the surface. As the substrate, various papers, synthetic papers, plastic sheets and the like may be used, but it is preferable to provide the support with the fine void layer and the curl prevention layer as described above. At this time, when the fine void layer and the anti-curl layer are plastic sheets or synthetic paper, they can be bonded to the support by the adhesive layer 10.

As the laminating method, for example, a known laminating method such as dry lamination, non-solvent (hot melt) lamination, and EC lamination method can be used, but preferred methods are dry lamination and non-solvent lamination. As an adhesive suitable for the non-solvent lamination method, for example, Takenate A-
720L. Examples of the adhesive suitable for dry lamination include Takelac A969 / Takenate A-5 (3/1) manufactured by Takeda Pharmaceutical Co., Ltd. The amount of these adhesives, from about 1-8 g / m ² on a solids, and preferably from 2 to 6 g / m ^2.

(Writing Layer) The writing layer 13 is provided with a layer provided with writability using an aqueous pen, a ball-point pen, a fountain pen, a pencil, or the like, or provided with printing and printing aptitudes such as printing ink, ink jet ink, hot melt transfer ink, and toner. Layer. Further, when the thermal transfer image-receiving sheet is used as a postcard, the writing layer can be provided with adhesiveness of a stamp. The writing layer mainly includes a binder resin and an inorganic filler. As the binder resin, for example, acrylate, saturated polyester, vinyl acetate, vinyl chloride-vinyl acetate copolymer, cellulose acetate, polyvinyl butyral, polyvinyl acetal, and polyvinyl alcohol can be used. Examples of the inorganic filler include silica, clay, calcium carbonate, titanium oxide, and zinc oxide. The writing layer 13 may be provided on the entire surface of the image receiving sheet as shown in FIG. 1 or may be formed partially. The means for forming the writing layer may be a conventionally known printing coating means, and the thickness of the writing layer is about 0.5 to 20 g / m ² when dried.

(Detection Mark) The shape and color of the detection mark 2 are not limited as long as they can be detected by a detector. The shape may be, for example, a square as shown in FIGS. 3 and 4, or a round shape, a straight line, a bar code, or the like. Further, the detection mark may be formed over the entire width of the roll-shaped thermal transfer image receiving sheet as shown in FIG. The color of the detection mark may be any color that can be detected by the detector. For example, in the case of a light transmission type detector, silver or black having high concealing properties may be used. Further, in the case of the light reflection type detector, a color tone of metallic luster having high reflectivity can be given. The detection mark may be formed by penetrating holes from the front surface to the back surface of the roll-shaped thermal transfer image-receiving sheet as shown in FIGS. 2 and 5, or may be formed by gravure printing or offset printing. In addition, a vapor deposition film can be provided by a hot stamp using a transfer foil, or a vapor deposition film with an adhesive can be attached to the back surface, and there is no particular limitation.

When the detection mark is formed by printing, the detection mark can be formed by dispersing a coloring pigment in a thermoplastic resin or a thermosetting resin and coloring it to a desired color. Specifically, carbon black, calcium carbonate, titanium oxide,
Clay, polyvinyl alcohol, coloring pigments such as silica,
Thermoplastic resin such as polyvinylpyrrolidone, polyester, chlorinated polypropylene, modified polyolefin, urethane resin, acrylic resin, polycarbonate, ionomer, or resin dispersed in monofunctional and / or polyfunctional hydroxyl-containing prepolymer and cured with isocyanate etc. Etc. can be used.

(Postcard Mark) The postcard mark 5 is
These are postal code frames and stamp affixing frames as shown in FIGS. 3 and 4, which are formed by printing or the like before image formation on an image receiving sheet by a thermal transfer printer. Further, in the present invention, when the thermal transfer image-receiving sheet is used as a postcard, the above-described postcard mark is formed.However, when the image-receiving sheet is used for other purposes, it is printed on the image-receiving sheet before forming an image with a printer. Characters, symbols, and the like formed as such mean the mark 5. In any case, the thermal transfer image-receiving sheet of the present invention is such that the position of the image printed by the printer and the marks of characters, symbols, and the like formed in advance by printing or the like on the image-receiving sheet before image formation by the printer do not match. Can be prevented.

The roll-shaped thermal transfer image-receiving sheet of the present invention is called a label or seal type as shown in FIG.
The receiving layer 11 on which an image is to be formed and the substrate 6 are
, A configuration that can be peeled off from the release sheet 15 can be used. In addition, the receiving layer 11, the base material 6, the adhesive layer 1
The portion in which the layers 4 are stacked in this order is the seal portion 17, and the seal portion 17 can be attached to any article.

(Release Sheet) The release sheet 15 is a material obtained by subjecting the surface of a conventionally known plastic film or poly-laminate paper to a release treatment with a known release agent such as silicone or the like. Lumirror T-60 (50 μm thick) manufactured by Diafoil Co., Ltd.
(38 μm thickness) and can be used. These release sheets preferably have a thickness of from 20 μm to 100 μm. If the release sheet is too thin, the so-called stiffness of the resulting thermal transfer image-receiving sheet disappears, and the thermal transfer image-receiving sheet cannot be conveyed or wrinkles occur on the thermal transfer image-receiving sheet. Or On the other hand, if the release sheet is too thick, the resulting thermal transfer image-receiving sheet will be too thick, and the force for driving and transporting the thermal transfer printer will be too large, resulting in failure of the printer or failure of normal transport.

(Pressure-Sensitive Adhesive Layer) The pressure-sensitive adhesive layer 14 can be formed using any conventionally known solvent-based or water-based pressure-sensitive adhesive. As the adhesive, for example, vinyl acetate resin, acrylic resin, vinyl acetate-acryl copolymer, vinyl acetate-vinyl chloride copolymer, ethylene-vinyl acetate copolymer, polyurethane resin, natural rubber, chloroprene rubber, nitrile rubber And the like. The coating amount of the pressure-sensitive adhesive layer is generally about 8 to 30 g / m ² (solid content), and the release sheet is formed by a conventionally known method, that is, a method such as gravure coating, gravure reverse coating, or roll coating. Apply on top and dry to form an adhesive layer. Also,
The adhesive strength of the pressure-sensitive adhesive layer 6 is a peel strength between the release sheet and the pressure-sensitive adhesive layer, and is in a range of 100 to 1,700 g, preferably 700 to 1,400 g in a 180 ° peeling method according to JISZ0237. It is desirable to do. It is preferable to select and use the kind of the pressure-sensitive adhesive and the amount of coating such that the peeling strength of the pressure-sensitive adhesive layer when it is formed on the release sheet falls within the above range.

(Half Cut) In the seal type thermal transfer image receiving sheet, as shown in FIG. 2, a half cut can be formed beforehand on the seal portion 17 except for the release sheet 15 before forming an image. The shape of the half cut is shown in FIG.
As shown in FIG. 6, a large number of square frames can be arranged, or a combination of different shapes such as a square and an ellipse as shown in FIG. 6 can be arbitrarily selected. The half-cut is formed by inserting a thermal transfer image-receiving sheet between the upper die with the cutter blade and the pedestal, and moving the upper die up and down, a cylinder type rotary cutter method, or heat treatment by laser processing means. And there is no particular limitation as long as it is a method capable of half-cutting.

[0032]

The present invention will be described more specifically with reference to the following examples and comparative examples. It should be noted that “part” or “%” in the text is based on weight. (Example 1) An intermediate layer and a receptor layer having the following composition were sequentially applied to a 39 μm-thick microvoid film of a microvoid layer, dried, and then an adhesive having the following composition was applied to the surface opposite to the surface on which the receptor layer was formed. Coated and dried. However, the coating amount of each layer is the time of drying, the intermediate layer 2 g / m ² , the receiving layer 4 g / m ² , the adhesive layer 4
g / m ² . Next, on one side as an anti-curl layer HD
Coated paper (18) with PE / PP (total thickness 33 μm) laminated
6.1 g / m ² ) of HDPE / PP was not laminated, and the above adhesive layer was adhered to prepare a roll-shaped thermal transfer image-receiving sheet. A writing layer having the following composition is formed on the anti-curl layer of the roll-shaped thermal transfer image-receiving sheet, and a postcard mark 5 is designated on the surface of the obtained writing layer in a predetermined pattern as shown in FIG. By forming a detection mark by applying a detection mark coating solution having the following composition on a blank portion formed by a normal gravure printing method and cut and removed after printing on the back surface of the image receiving sheet, and dried, Thus, an image receiving sheet No. 1 was produced.

Intermediate layer coating liquid Polyester resin (WR-905, manufactured by Nippon Polyurethane Co., Ltd.) 13.1 parts Titanium oxide (TCA888, manufactured by Tochem Products Co., Ltd.) 26.2 parts Fluorescent whitening agent (Ubitex) BAC, Nippon Ciba-Gaikey Co., Ltd.) 0.39 parts Water 60.0 parts Water / IPA = 1 / l 32.0 parts

Receptive layer coating liquid Vinyl chloride-vinyl acetate copolymer 12.0 parts (Denka vinyl # 1000A, manufactured by Denki Kagaku Kogyo KK) Epoxy-modified silicone 0.8 parts (X-22-3000T, Shin-Etsu Chemical Co., Ltd.) Amino-modified silicone 0.24 part (X-22-1660B-3, manufactured by Shin-Etsu Chemical Co., Ltd.) Toluene / MEK = 1/1 60.0 parts

Adhesive layer coating liquid polyfunctional polyol 30 parts (Takelac A-969V, manufactured by Takeda Pharmaceutical Co., Ltd.) Isocyanate 10 parts (Takenate A-5, manufactured by Takeda Pharmaceutical Co., Ltd.) 60 parts of ethyl acetate

Writing Layer Coating Solution Polyvinyl Butyral 30 parts (# 3000-1, manufactured by Denki Kagaku Kogyo KK) Nylon Filler (MW-330, manufactured by Shinto Paint Co., Ltd.) 5 parts Silica (Sylysia 250, Fuji Silysia) Chemical Co., Ltd.) 60 parts Chelating agent (Orgatex TC-750, manufactured by Matsumoto Pharmaceutical Co., Ltd.) 5 parts Toluene / IPA = 1/1 400 parts

Detection mark coating liquid carbon black 8 parts Urethane resin (HMS-20, manufactured by Nippon Polyurethane Co., Ltd.) 15 parts Toluene / MEK = 1/1 77 parts

(Example 2) [0038] Except that the detection mark of the roll-shaped thermal transfer image-receiving sheet produced in Example 1 was formed as a through hole.
An image receiving sheet of Example 2 was produced in the same manner as in Example 1. (Example 3) On one surface of a polyethylene terephthalate film (W-900, manufactured by Diafoil Co., Ltd., thickness: 50 μm) having a microvoid inside, which is a base material, the receiving layer coating liquid used in Example 1 was applied. 4.0 g / m ² when dried
To form a receiving layer, and then apply a 15 g / m ² dry pressure-sensitive adhesive coating solution having the following composition to the surface of the above substrate on which the receiving layer has not been formed. And dried to form a pressure-sensitive adhesive layer.

Adhesive layer coating liquid composition Acrylic copolymer 48 parts (SK Dyne 1310L manufactured by Soken Chemical Co., Ltd.) Epoxy resin (Curing agent E-AX manufactured by Soken Chemical Co., Ltd.) 0.36 parts Ethyl acetate 51.64 parts

Separately, a surface-untreated biaxially oriented polypropylene film (trade name: Pyrene P215) as a release sheet
6, manufactured by Toyobo Co., Ltd., having a thickness of 30 μm). Further, in the arrangement as shown in FIG. 5, a half-cut is formed on the seal portion by a pressing method of the upper die and the pedestal with the cutter blade attached, and a detection mark of the through hole is formed on a blank portion which is cut and removed after printing is completed. Then, a roll-shaped thermal transfer image-receiving sheet of Example 3 was produced.

Comparative Example 1 An image receiving sheet of Comparative Example 1 was produced in the same manner as in Example 1 except that the detection mark of the roll-shaped thermal transfer image receiving sheet produced in Example 1 was eliminated. (Comparative Example 2) An image receiving sheet of Comparative Example 2 was produced in the same manner as in Example 3 except that the detection mark of the roll-shaped thermal transfer image receiving sheet produced in Example 3 was eliminated.

Using the roll-shaped thermal transfer image-receiving sheets of the above Examples and Comparative Examples, images were formed by thermal transfer under the following conditions. A thermal transfer printer (Mitsubishi Electric Corporation) using a thermal transfer sheet (for CP-700 manufactured by Mitsubishi Electric Corporation) having dye layers of three colors of yellow, magenta and cyan sequentially and the above-mentioned roll-shaped thermal transfer image receiving sheet. Made C
(P-700), an image was formed, and a blank portion at a fixed position was cut and removed. In Example 1, Example 2, and Comparative Example 1, a fixed landscape image to be stored in a postcard size was formed, and cut at a cutting position shown in FIG. Also, in Example 3 and Comparative Example 2, as shown in FIG. 5, the images of the twelve face photographs were formed slightly larger than the area surrounded by the half cuts, and were formed in units of 4 in FIG. At the cutting position shown in FIG.

(Evaluation Method) By the above printing method, the positional relationship between the image to be printed and postcard marks such as postal codes and half cuts, the cutting position of the roll-shaped image receiving sheet, and the image or postcard to be printed. The positional relationship between the mark and the half-cut line was checked for any deviation. The evaluation criteria are as follows. ：: The image is formed at an accurate position with respect to the position of the postcard mark and the half cut, and the cutting position of the image receiving sheet is formed at an accurate position with respect to the image, the postcard mark and the half cut. . ×: The image is formed to be shifted from the position of the postcard mark and the half-cut, and the cutting position of the image receiving sheet is shifted from the position of the image, the postmark and the half-cut.

The evaluation results are shown in Table 1 below.

[Table 1]

[0045]

As described above, the roll-shaped thermal transfer image-receiving sheet of the present invention is provided with a detection mark in a blank portion which is cut and removed after printing is completed on the image-receiving sheet. , Magenta, cyan, and the like, color misalignment of the thermal transfer image, and misalignment between the image to be printed and a printing portion such as a postal code or half cut can be prevented. In addition, the detection mark can be read and cut into a desired size of the rolled image receiving sheet on which an image has been formed, and the cutting position of the rolled image receiving sheet is aligned with the image to be printed or the position of a postcard mark or half cut. Can be prevented.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing one embodiment of a roll-shaped thermal transfer image-receiving sheet of the present invention.

FIG. 2 is a cross-sectional view showing another embodiment of the roll-shaped thermal transfer image-receiving sheet of the present invention.

FIG. 3 is a plan view showing one embodiment of a roll-shaped thermal transfer image-receiving sheet of the present invention.

FIG. 4 is a plan view showing one embodiment of a roll-shaped thermal transfer image-receiving sheet of the present invention.

FIG. 5 is a plan view showing one embodiment of a seal type roll-shaped thermal transfer image receiving sheet of the present invention.

FIG. 6 is a plan view showing one embodiment of a seal type roll-shaped thermal transfer image receiving sheet of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 roll-shaped thermal transfer image-receiving sheet 2 detection mark 3 margin 4 part to be cut after printing 5 postcard mark (postal code frame, etc.) 6 base material 7 support 8 microvoid layer 9 curl prevention layer 10 adhesive layer 11 receiving layer 12 Intermediate layer 13 Writing layer 14 Adhesive layer 15 Release sheet 16 Half cut 17 Seal part

Claims (5)

[Claims] 1. A thermal transfer image-receiving sheet in roll form, wherein a detection mark is provided in a blank portion of the thermal transfer image-receiving sheet supplied to the printer in a roll state, which is cut and removed after printing is completed. 2. The roll-shaped thermal transfer image-receiving sheet according to claim 1, wherein a postcard mark and a half-cut processing are formed in advance. 3. The roll-shaped thermal transfer image receiving sheet according to claim 1, wherein the detection mark is provided on a side opposite to a surface on which the image is printed. 4. The thermal transfer image-receiving sheet according to claim 1, wherein said detection mark is provided on a surface on which said detection mark is printed. 5. The roll-shaped thermal transfer image receiving sheet according to claim 1, wherein said detection mark is a through hole.