JPH021384A - Formation of image-receiving layer by thermal transfer - Google Patents

Abstract

PURPOSE:To facilitate the formation of an image-receiving layer dyeable with a sublimable dye by providing the image-receiving layer on a surface of an image-receiving body, for transfer recording, by a dry-type heating and pressing transfer method. CONSTITUTION:A base 1 comprising a synthetic resin, a synthetic paper or the like having the same size as that of a printing paper for a video printer for forming images by use of sublimable dyes is provided with marks 2 indicative of a sensor mark for the video printer, a position for placing a card or the like, thereby obtaining a mount paper 3, on which the card 4 and an image- receiving transfer foil 5 are laid. The transfer foil 5 comprises a transfer foil base 7, a release layer 8, an image-receiving layer 9, an adhesion-controlling layer 10 and an adhesive layer 11. By this method, an image-receiving layer dyeable with sublimable dyes can be easily provided on a surface of the card or the like constituting the final form.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method of providing an image-receiving layer on a transfer recording medium on which an image is formed using a heat-sensitive transfer medium using a sublimable dye.

In recent years, when converting information from video signals etc. into images,
Applications of thermal transfer media using sublimable dyes are rapidly expanding. Under these circumstances, there are increasing requests for image recording on prepaid cards such as telephone cards and orange cards.

It is also possible to expand the application to ID cards, driver's licenses, and passports.

<Prior art> When forming an image on a card by dyeing with a sublimable dye, an image-receiving layer that is dyeable to the sublimable dye is provided on the base material in advance, and the image is formed after the card is formed. Alternatively, there is a method of forming the image into a card after forming the image. Although these methods are possible when manufacturing cards, they are not possible when dealing with cards that are on the market. Another method is to attach a thin PET resin base material with an image formed with a sublimation dye to the card, but this method is also complicated to attach to the card, and the thin PET resin base material protrudes from the card. It was not suitable for practical use because of the risk of card damage during processing and problems on the card reader side due to the increased thickness.

<Problems to be Solved by the Invention> The present invention provides an image-receiving layer that is dyeable to sublimation dyes on the surface of existing synthetic resin cards, synthetic paper cards, paper cards, and other transfer recording materials. The aim is to provide a simple method for forming .

Means for Solving the Problems> That is, the present invention is characterized in that an image-receiving layer is formed by a dry heat-pressure transfer method using a heat-sensitive transfer foil.

Hereinafter, the present invention will be described in detail with reference to the drawings.

The present invention provides a base material (1) made of synthetic resin, synthetic paper, paper, etc., which is the same size as the photographic paper of a video printer that forms images using sublimable dyes, as shown in FIG. A mark indicating the location of the mark or card (
As shown in FIG. 3, a card (4) and an image-receiving layer transfer foil (5) are stacked on the mount paper (3) on which 2) is formed, as shown in FIG. As shown in FIG. 4, this image-receiving layer transfer foil (5) has a release layer (6),
It is composed of a transfer foil base material (7), a release layer (8), an image receiving layer (9), an adhesive force adjustment layer 00), and an adhesive layer (11).

First, the release layer (6) serves as an anti-blocking layer with the adhesive layer (1) and has a cellophane tape peel strength of 20 g/24
mm or less, dynamic friction coefficient 0.1 μ or less, surface hardness 3
■It has the above characteristics. Further, in order to reduce the contact area with the adhesive IJQII, a filler having a particle size of 2 to 5 μm can be added. Next, a polyester film with a thickness of 25 to 50 μm is used as the transfer foil base material (7), and a release layer (
8) is formed. Considering the coating properties of the image-receiving layer (9) laminated thereon and the releasability during transfer of the image-receiving layer, this release layer has a cellophane tape strength of 15 g/24 m+ or less.
Surface hardness is 3H or more, and the coefficient of static friction between silicone surfaces is 0.
14 to 0, 21, and has taintability due to oily mazinc. The image-receiving layer (9) to be laminated and coated on this peeling N (8) is based on a thermoplastic polyester resin that has effective dyeability against sublimation dyes, and an addition reaction or condensation reaction type curable silicone resin is added. This prevents blocking (resin film peeling) between the sublimation thermal transfer medium and the image-receiving layer during printing, provides a highly concentrated dye coloring for the image-receiving layer, and has characteristics of high storage stability. The adhesive strength adjusting layer 0■ improves the adhesive strength of the coating film between the image receiving layer (9) and the adhesive layer (11), and also separates the adhesive layer and the image receiving layer to prevent any influence on each.

This adhesive force adjustment layer 00) has a tensile strength at break of 300
kg/crA (ASTM 0638) or more and a tensile elongation at break of 20% or more is used, and is characterized by high film strength. Finally, glue J! 1 (II) is a polyurethane resin or polyester resin with a melting point of 70°
It is a heat-sensitive adhesive having the following characteristics: C or more and 130°C or less, glass transition point of 15 or more and 50 or less, and film tensile strength of 100 to 200 kg/cJ. Next, as shown in Figure 4, Mi
Pressed mount (3), card (4), image-receiving layer transfer foil (5)
is sandwiched between carrier films 07J as shown in FIG. The carrier film 02) is made of a polyester film with a thickness of 100 μm or less, and perforations 09 are formed so that it can be easily inserted. Next, roll surface temperature is 80°C or more and 180'C or less, roll pressure is 10kg or more and 16kg or less (total pressure), and feed speed is 3.
．． It is passed between heating and pressure rolls under the conditions of 0 mm/see or more and 10 mm/sec or less. At this time, the image-receiving layer transfer foil (5) is adhesively fixed to the card surface via the adhesive layer (11). Next, as shown in FIG. 1, a release layer (8),
When the peel-off portion consisting of the transfer foil base material (7) and the release layer (6) is removed, an adhesive layer (10, an adhesive force adjustment layer 0■, and an image receiving layer (9) consisting of the adhesive layer (10) and the image receiving layer (9) are formed on the mount (3). Image forming layer 04)
The card fixed to is now ready for printing on the mount (3). After printing in this state with a video printer capable of forming images using sublimable dye, the mount (3) and unnecessary portions on the image forming layer side are removed as shown in FIG. Here, the image forming layer 041 protruding from the card is 1140
It can be easily removed with 0-1800 sandpaper.

In addition, the film thickness of each layer of the image-receiving layer transfer foil (5) is as follows:
) is 0.5 to 2.0 g/bo, peeling N(8) is 0.5 to 2
．． 5 g/r, image receiving layer (9) 4.5 to 8.5 g/r
rf, adhesive force adjustment iotn is 1.0 to 3.0 g/
rrf, adhesive layer (10 is 1.5 to 5 g/bo).

The above method is just an example, and as shown in FIG.
There is also a method of sandwiching the card (4) inside and applying heat and pressure, and in this case, the carrier film can be omitted.

The mounting paper (3) and the image-receiving layer transfer T3 (5) can be connected by bonding them together with an adhesive, or by using a synthetic resin mounting paper and heat-sealing them to the transfer foil base material. be.

Note that the recording medium to be transferred is not limited to a card, and any sheet-like base material can be used.

<Effects of the Invention> According to the present invention, it is possible to easily form an image-receiving layer that is dyeable to sublimation dyes on the surface of a card, etc. in its final form, and it is also easy to use in a printer by fixing it on a mount. It is now possible to print without any special modification.

In addition, it can be used satisfactorily without impairing the characteristics of the card itself, such as the gating property when passing through a card league or the feeling of riding on a card with a magnetic layer.

The image-receiving layer forming method of the present invention allows an image-receiving layer that is dyeable to sublimable dyes to be easily formed on a smooth synthetic resin sheet, paper, etc. using a simple heating and pressure roll. It is possible to form an image-receiving layer for easily forming a color image on the surface of a card or even on postcards, etc., which are difficult to wet-coat.

<Example> ■Release layer X5629 modified (Toagosei Chemical Industry ■) 0
0 g Coronate EH (Japan Polyurethane ■) g Adbastab T-12PJ (Katsuta Kako ■) 0.04 g This was diluted with MEK/) luene = 18 to the desired viscosity and dried on the surface of a 40 μm thick polyester film. Coat by weight in t, og/bo.

■Peeling layer X5723^ (Shin-Etsu Chemical) l
ong to 3723B () 20gPS-3
() 4g Is this the desired viscosity? Dilute with IE and apply 1.0 g on the other surface of the polyester film using dry ff1f.
/ Po coating.

■Image receiving layer XA6083 NV2Oχ MEK
/ I-ru:r:, 7='/(Unitika ■)
100 g XA6084 00 g KP301 (Shin-Etsu Chemical) 40 g Coronate El+ (Japan Polyurethane 01) g M[! /) Diluted with 18% luene and coated on the release layer in an amount of 5g/dry weight.

■Adhesion force adjustment layer XA6085 NV2O! MEN/
) le17='/.

(Unitika ■) This is diluted with MEX/ ) luene = 88 to a desired viscosity, and coated on the release layer in a dry M amount of 5 g/po.

■Adhesive layer Hytran AP-2 (Dainippon Ink Chemical ■)
00g Megafac F-833 (〃) 2.5g This is coated on the adhesive force adjustment layer at a dry weight of 3.5g/rrI.

The image-receiving layer transfer foil laminated as described above did not block in the rolled or sheet state, and the nip roller temperature was 120 °C, the nip roller pressure was applied, the total pressure was 7 kg, and the feeding speed was 7.1. Lami Bunker LPCI70 (Fujiplasti) with the condition of tm/sec.

White telephone card (N
(manufactured by TT) showed good adhesion of the image receiving layer to the back surface.

[Brief explanation of the drawing]

The drawings show the method of the present invention; Fig. 1 is a cross-sectional view of the image-receiving layer being transferred to the surface of the card, Fig. 2 is a perspective view of the mount, and Fig. 3 is a sectional view of the card and the mount on the mount. Fig. 4 is a cross-sectional view of the transfer foil, Fig. 5 is a perspective view showing the stack of mount, card, and transfer foil sandwiched between carrier films. FIG. 7 is a cross-sectional view showing a state in which the card is removed from the mount, and FIG. 7 is a cross-sectional view showing an embodiment in which no carrier film is used. (1)...Base material (2)...Mark (
3)... Mount (4)... Card (5
)...Image receiving layer transfer f! (6)...Release layer (
7)... Transfer foil base material (8)... Peeling layer (9
)... Image receiving layer (11)... Adhesive layer 03)... Peeling removed portion qω... Perforation feature (101... Adhesive force adjustment layer 02)... Carrier film G41... Image Formation layer Kazuo Suzuki Toppan Printing Co., Ltd. Figure 1 Figure 2 Figure 5 Figure 3

Claims (4)

[Claims] (1) An image-receiving layer that is dyeable to sublimable dyes is formed on the surface of a recording medium on which an image is to be transferred using a thermal transfer medium using sublimable dyes, using a dry heat-pressure transfer method. A method for forming an image-receiving layer by a thermal transfer method, characterized in that: (2) Image reception by the thermal transfer method according to claim (1), characterized in that a transfer foil consisting of a release layer/transfer foil base material/release layer/image receiving layer/adhesive force adjustment layer/adhesive layer is used. How to form layers. (3) preparing a mount with a mark indicating the position on which the transfer recording medium is to be placed, and placing the transfer recording medium on the mount;
A transfer foil consisting of a release layer/transfer foil base material/release layer/image receiving layer/adhesive force adjustment layer/adhesive layer is layered on top of this, and this is sandwiched between two folded polyester films and heated and pressed. The method for forming an image-receiving layer by a thermal transfer method according to claim 1. (4) A sheet with markings indicating the position where the transferred recording material is placed, and a transfer foil consisting of a release layer/transfer foil base material/release layer/image receiving layer/adhesive force adjustment layer/adhesive layer, The thermal transfer method according to claim (1), characterized in that the ends of each are connected so that the article can be sandwiched between them, and then the recording medium to be transferred is sandwiched inside and heated and pressurized. Method of forming an image-receiving layer.