JPS61244589A - Image-receiving material for thermal transfer recording - Google Patents

Abstract

PURPOSE:To ensure that the title material is stably moved together with a transfer material and the color value of a recorded image is hardly changed, by incorporating a polyoxyalkylene-silicone copolymer in a surface layer of an image-receiving material. CONSTITUTION:The image-receiving material 3 comprises a base 1 and a dyeable layer 2. The polyoxyalkylene-silicone copolymer is incorporated in the inside part and at the surface of the layer 2, and is represented by the formula, wherein R is H, CH3 or C2H5, m and n are integers of not more than 2,000 which satisfy the relationship m>n, and each of (a) and (b) is an integer of not more than 30.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to recording by thermal transfer, particularly to an image receptor for sublimation type thermal transfer recording using a sublimable dye.

BACKGROUND ART In sublimation type thermal transfer recording, an image is recorded by transferring a portion of the sublimable dye in a coloring material layer to an image receptor.

Since only a small amount of sublimable dye is used in the color material layer for each printing, it is possible to record many times using the same transfer member. One way to use it multiple times is to make the transfer speed slower than the image receptor, and use it by slightly shifting the overlap between the first and second used parts of the color material layer of the transfer member. There is a way.

Problem 2 to be Solved by the Invention - However, in this method, the traveling speeds of the transfer body and the image receiving body are different, so the conventional image receiving body has a large running frictional resistance with the transfer body and does not run stably. Further, as a substance for reducing the running frictional resistance, a known substance such as a lubricant can be used, but a substance that has little effect on the chromaticity of an image recorded on an image receptor is unknown.

SUMMARY OF THE INVENTION An object of the present invention is to obtain an image receptor that stably runs while moving relative to a transfer body, and in which the chromaticity of a recorded image hardly changes.

Means for Solving the Problems The thermal transfer recording image receptor of the present invention contains a polyoxyalkylene silicone copolymer in the surface layer.

Effect: By having the copolymer present in the surface layer of the image receptor, the running friction between the surface of the image receptor and the transfer body is reduced, and the image receptor runs stably. Furthermore, the copolymer has little effect on chromaticity and has no other side effects.

Embodiment FIG. 1 shows a schematic sectional view of an image receptor according to an embodiment of the present invention. The image receptor 3 is composed of a base material 1 and a dyeing layer 2. A polyoxyalkylene silicone copolymer (hereinafter abbreviated as copolymer) is contained inside and on the surface of the dyeing layer 2. The general formula of the polyoxyalkylene silicone copolymer is shown below. In the formula, R is H, GH3 or C
2H5; m.

n is an integer of 2000 or less; m) n; a;

All b are integers of 30 or less.

C3H6(OC2H4)a(OC3H6)bORAnother example is shown in FIG. The image receptor 7 includes a base material 4, a dyed layer 6.
It consists of an overcoat layer 1 and a layer 6, and the copolymer is contained in the overcoat layer 6. Further, it may also be contained in the dyeing layer 5.

Specific examples will be shown below.

Water-based polyester resin [Pyronal M] on one side of high-quality paper
DI 200, Toyobo Example)] 15 heavy parts 1 water 3
A coating solution containing 0 parts by weight was applied using a wire bar to obtain a dyed layer with a thickness of about 6 μm.

Next, the following coating liquid 1 was applied onto the dyed layer using a wire bar, dried with a dryer, and then irradiated with a 1 KW high-pressure mercury lamp to obtain an overcoat layer with a thickness of 0.771 m.

(Coating liquid 1) Polyester acrylate resin 9 parts by weight 2-hydroxy-2-methylpropiophenone 0.46 parts by weight Polyoxyalkylene silicone copolymer [:L-7
500 Nippon Unicar ■] 027 parts by weight ethyl acetate
100 parts by weight
- An image receptor containing a polyoxyalkylene silicone copolymer in the layer was obtained.

Next, the following coating liquid 2 was applied to the negative side of the polyimide film having a slippery layer on the lower surface, dried with a dryer for 5 minutes, and then irradiated with ultraviolet rays to obtain a particle-containing layer. ) Evogishya acrylate resin 20 parts by weight Benzyl dimethyl Kecool 1 part by weight Titanium oxide
14 parts by weight silicone surfactant
0.2 parts by weight ethyl acetate
Next, 100 parts by weight of the following ink composition was applied onto this particle-containing layer using a wire bar to prepare a transfer body.

(Ink composition liquid) Sublimation dye (chemical formula below) 4 parts by weight Polycarbonate 5 parts by weight Titanium oxide
2 parts by weight methylene chloride
100 parts by weight - 1 - Using an image receptor and a transfer member, the traveling speed of the image receptor was twice that of the transfer member, and recording was carried out under the following recording conditions.

6 [Line density of main and sub-scanning = 8 dots/cylinder recording power = 0.4 W/dot head heating time: 2.5 ms The transfer body and image receptor ran well, and the CIE color system of this recorded image The chromaticity coordinates of the system were x = 0.36857-0.2065.

This is the chromaticity coordinates of the recorded image obtained by running the transfer body and the image receiving body not containing polyalkylene silicone copolymer at the same speed x=o, 3622 y-0, 2103
Compared to , there was almost no change in chromaticity.

(Comparative Example) The following coating liquid was applied onto the dyed layer prepared in the example, and ultraviolet rays were irradiated to form an overcoat 1 layer with a thickness of 01771 m to obtain an image receptor.

Polyester acrylate resin 9 parts by weight 2-hydroxy-2-methylpropiophenone 0.45 parts by weight Ethyl acetate 100 parts by weight This image receptor and the transfer body of Example were used and run under the same recording conditions as in Example. As a result, the gliding between the image receptor and the transfer body was poor, and unrecorded horizontal lines appeared in the recorded image, making it impossible to run stably.

Effects of the Invention The present invention provides an image receptor that runs stably with the transfer body and has almost no change in chromaticity of the recorded image by holding a polyoxyalkylene silicone copolymer in the surface layer of the image receptor. can do.

[Brief explanation of drawings]

FIGS. 1 and 2 are schematic cross-sectional views of image receptors for thermal transfer recording, which are examples of the present invention. 1.4... base layer, 2,6... dyed layer,
3,7... Image receptor, 6... Overyo 1
Even more. Name of agent: Patent attorney Toshio Nakao and 1 other person
1 Figure 2

Claims (1)

[Claims] An image receptor for thermal transfer recording containing a polyoxyalkylene silicone copolymer in the surface layer.