JPS62174190A - Image receiver for transfer type thermal recording - Google Patents

Abstract

PURPOSE:To make it possible to realize an inexpensive image receiver having a film substrate made thin and provided with an image receiving surface having smoothness, homogeneity and flexibility and also satisfying rigidity and heat resistance, by forming the film substrate into a structure adhered to a thin sheet like substrate based on fiber. CONSTITUTION:A film substrate 1 is adhered to a thin sheet like substrate 3 through an adhesive layer 4. In the case of a sublimation transfer type thermal recording system, a dyeable layer 2 is provided. As the thin sheet like substrate 3, plain paper, wood-free paper, coated paper and art paper, etc. are used generally but a synthetic fiber may be used other than a natural fiber. In the case of a melt transfer type thermal recording system, the dyeable layer 2 is not especially required but effective in the case of the sublimation transfer type thermal recording system. When a disperse dye is used as a dye, the dyeable layer 2 contains a polyester resin as a main dyeable agent and further contains pigment and a dispersant, etc. and formed as a film with a thickness of 1-5mum by an air knife or gravure system.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a high-quality, structurally stable, and economical image receptor for transfer type thermal recording.

BACKGROUND OF THE INVENTION For image receptors for transfer type thermal recording, thin paper made from natural fibers may be used, and synthetic paper with internal paper-forming power of 2 beno type or surface coating type may be used.

The former is known to be inexpensive, but has problems with recording density and image quality, and the latter is known to be expensive, although it can provide high image quality with low recording energy due to its smoothness, homogeneity, and flexibility.

In the case of sublimation transfer type thermal recording image receptors that use sublimable dyes, it is necessary to provide a dyeing layer on the surface to allow the dye to develop well, but the characteristics of paper and synthetic paper are the same. be.

Therefore, in order to reproduce images with excellent halftones using a transfer-type thermal full-color printer, synthetic paper has generally been used as an image receptor.

Problems to be Solved by the Invention Generally, image receptors using synthetic paper lack heat resistance and rigidity, so they tend to jam or curl when fed into a printer, and require a thickness of 150 μm or more, making them even more expensive. There was a problem.

It is an object of the present invention to solve these problems and provide a transfer-type thermal recording image receptor that provides high image quality, is structurally stable, and is economical.

3 ” ”Means for solving the problems The transfer type thermal recording image receptor of the present invention has a film base,
It is characterized by having a structure in which it is bonded to a thin film substrate made from fibers.

Effect By using the structure of the present invention, it is possible to make the film base thinner, and this film base layer provides the smoothness, homogeneity, and flexibility necessary for high density and high image quality, and by making it thinner, problems can be solved. The rigidity and heat resistance required can be supplemented with a thin-sheet substrate made from fiber.

When the surface of the film substrate is covered with a porous layer, flexibility is particularly imparted, and images with high density and high quality can be provided.

Embodiment A sectional view of one embodiment of the present invention is shown in FIG. 1, and a sectional view of another embodiment is shown in FIG.

1 is a film base, and in the case of a sublimation transfer type heat-sensitive recording system, a dyed layer shown in 2 is provided. 3 is fiber 'f: a thin film substrate used as a raw material, and plain paper is generally used. 4 is an adhesive layer between the film substrate 1 and the thin film substrate 3, and may be provided on the lower surface of the film substrate 1 or the upper surface of the thin film substrate 3.

The film substrate 1 may be A, B, or C below.

A +1 Polyethylene terephthalate) (PET
), for single films of 10 μm to 100 μm such as polypropylene (PP), polystyrene, polyvinyl chloride, polyethylene, etc.

B: As in the embodiment shown in FIG. 2, a film base 1 in which a porous layer 6 is coated on a single film 6 is used. The film used for A may be the same as the porous part 7.
The porous layer 5 containing polyvinyl chloride, polyvinyl acetate, AS, ABS, polyester, polystyrene,
A blend or copolymer of resins such as polypropylene, polyethylene, acrylic, acetate, etc. is used, and the diameter is 10 μm.
It is coated to a thickness of 60 μm to 60 μm. Plasticizers, pigments, surfactants, etc. are added to give the coating film flexibility, heat resistance, or whiteness, and at the same time, porous areas are physically formed. Formation of a porous layer 5 The vane method is formed by applying a paint using a coating method such as a three-line reverse method, a wire bar one-way method, or a gravure reverse method, rapidly coagulating it with water, etc., and then drying it. be able to. When this porous material is whitened with a white pigment or the like, the hiding property increases.

Of course, it may be transparent.

C: In the case of synthetic paper using the internal paper conversion method. It can be produced by adding pigments, dispersants, etc. to a resin such as polypropylene, melt-kneading it in an extruder, extruding it through a die/slit, and stretching it as necessary.

The thin substrate 3 is generally made of plain paper, high-quality paper, coated paper, art paper, etc., but it may also be made of natural fibers or synthetic fibers.

In the case of a melt transfer type heat-sensitive recording method using a wax-pigment type coloring material, the dyeing layer 2 is not particularly necessary, but it is effective in the case of a sublimation transfer type heat-sensitive recording method. When a disperse dye is used as the dye, the dyeing layer 2 is formed by using a polyester resin as the main dye and a paint film containing pigments, dispersants, etc. to a thickness of 1 μm to 6 μm using an air knife, grapiro pager, etc. Ru.

When the image receptor configured as described above is applied to a sublimation transfer type thermal recording system, the recording energy applied to the thermal recording head modulated in pulse width from zero to about tsTlca can be used to print in color or print colors in a silver halide photographic pot. Good reproducibility, dot reproducibility, and color density were obtained. Further, even when the paper is fed to a printer and recorded, stable recording is possible without jamming, curling, etc., and an economical image receptor for transfer type thermal recording can be provided.

Effects of the invention In addition to providing smoothness, homogeneity, and flexibility of the image receiving surface,
It is possible to realize an inexpensive image receptor that satisfies rigidity and heat resistance.

[Brief explanation of drawings]

FIGS. 1 and 2 are cross-sectional views showing the structure of a transfer type thermal recording image receptor in an embodiment of the present invention. 1...Film base, 2...Dyeing layer,
3...Thin film substrate, 5...Porous layer.

Claims (3)

[Claims] (1) An image receptor for transfer-type thermal recording comprising a laminate of a film substrate with a highly smooth surface and a thin substrate made of fibers. (2) The image receptor for transfer type thermal recording according to claim 1, wherein the film substrate is a film provided with a porous layer on the surface. (3) The image receptor for transfer type heat-sensitive recording according to claim 1 or 2, characterized in that a dyeing layer is provided on the film substrate surface.