Thermal transfer sheet and protective layer transfer sheet

Abstract

The invention provides a thermal transfer sheet and a protective layer transfer sheet. It is intended to provide a sheet of excellent transfer performance, in particular, a thermal transfer sheet that excels in transfer sensitivity and adhesion between base material and dye layer and that can be used in high-speed photographic printing with high transfer sensitivity, being capable of providing a photographic print of high density and high clearness, and a protective layer transfer sheet that excels in transfer performance, being markedly low in the generation of static electricity at the time of transfer. Further, it is intended to provide a photographic print that excels in antistatic performance, plasticizer resistance and transparency. There is provided a sheet with a base material, in particular, a thermal transfer sheet (I) comprising a laminate of, sequentially arranged, a base material, an underlayer and a dye layer, or a protective layer transfer sheet (II) comprising a base material and, detachably superimposed on at least part of the surface thereof, a protection transfer laminate including a conductive layer, characterized in that the underlayer and conductive layer are each one produced using colloidal inorganic pigment ultrafine particles.

Description

technical field [0001] The invention relates to a thermal transfer sheet and a protective layer transfer sheet. Background technique [0002] As a method of forming an image by thermal transfer, there is known a thermal diffusion type transfer method (sublimation thermal transfer method) in which a thermal diffusion type thermal transfer sheet and a thermal transfer image sheet as a recording material are superimposed on each other to form a full-color image. transfer method), the thermal diffusion type thermal transfer sheet is loaded with thermal diffusion type dye (sublimation dye) on the substrate such as plastic film, and the thermal transfer image sheet is loaded on other substrates such as paper or plastic film A receiving layer for the above-mentioned dyes is provided on the material. [0003] With regard to the thermal transfer recording method by sublimation transfer, as the printing speed of thermal transfer printers has increased, there has been a problem that s...

AI Technical Summary

Problems solved by technology

The undercoat layer described in Patent Document 6 has problems in that it has insufficient heat resistance due to the organic chain derived from the above-mentioned copolymer, and is easily hydrolyzed and unstable due to the above-mentioned inorganic main chain.

However, there are two problems in the antistatic layer containing a conductive agent using an adhesive resin: (1) since the adhesiveness with the base sheet or other layers must be considered when setting the mixing ratio, the effect on the conductive agent The amount of addition is limited, so a certain amount of coating is required to obtain the desired antistatic ability; (2) The compatibility of the conductive agent and the adhesive must be considered, so that there are restrictions on the combination

However, a plasticizer-resistant resin layer in which a polar group is introduced into an acrylic copolymer resin may not be sufficient

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