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    • 3. 发明申请
    • HEAT-SENSITIVE TRANSFER METHOD
    • 热敏传输方法
    • WO1990000475A1
    • 1990-01-25
    • PCT/JP1989000697
    • 1989-07-11
    • DAI NIPPON INSATSU KABUSHIKI KAISHAKITA, Tatsuya
    • DAI NIPPON INSATSU KABUSHIKI KAISHA
    • B41M05/26
    • B41M5/385Y10S428/913Y10S428/914
    • This invention relates to a method for making heat-sensitive transfer recording by superposing an image receiving sheet consisting of (a) heat transfer sheet having a dye layer of dyes and a binder disposed on a substrate onto (b) an acceptance layer made of a resin for accepting the dyes transferred from the dye layer of the heat transfer sheet and disposed on the substrate in such a manner as to have the dye layer and the acceptance layer face each other and heating the heat transfer sheet from its back in accordance with image information to transfer the dyes to the acceptance layer. The method of the present invention is characterized by combined use of the image receiving sheet and the heat transfer sheet described above so that the dye diffusion coefficient in the acceptance layer is at least 5 x 10-9 cm2/minute at 120°C when the dyes constituting the dye layer of the heat transfer sheet migrate into the acceptance layer of the image receiving sheet and diffuse therein and the dye transfer ratio is at least 40 % at 120°C when the dyes constituting the dye layer of the heat transfer sheet are transferred to the acceptance layer of the image receiving sheet. The present invention relates also to the combination member of the heat transfer sheet and the image receiving sheet described above which is to be used for the method described above. The present invention can set recording sensitivity to an optimum condition by merely setting the two factors, that is, the dye diffusion coefficient and the dye transfer rate, to the values described above and can form an image having excellent heat-sensitive recording density irrespective of the amount impressed energy at the time of transfer.