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    • 25. 发明授权
    • Electrothermal transfer sheet
    • 电热转印片
    • US5187002A
    • 1993-02-16
    • US490592
    • 1990-05-18
    • Noritaka EgashiraNaoto SatakeMasanori Akada
    • Noritaka EgashiraNaoto SatakeMasanori Akada
    • B41J31/00B41M5/26B41M5/382
    • B41M5/3825Y10S428/913Y10T428/24901Y10T428/24917Y10T428/25Y10T428/266Y10T428/30
    • The electrothermal transfer sheet of the present invention comprises a substrate sheet, at least one resistor layer formed on one surface of the substrate sheet and a dye layer comprising a heat-migratable dye and a binder, which is formed on the other surface of the substrate sheet. This transfer sheet is characterized in that at least one resistor layer has a positive resistance-temperature coefficient, the ratio R.sub.100 /R.sub.25 of the resistance value (R.sub.100) at 100.degree. C. to the resistance value (R.sub.25) at 25.degree. C. in the resistor layer is at least 1.2 and the ratio R.sub.200 /R.sub.100 of the resistance value (R.sub.200) at 200.degree. C. to the resistance value (R.sub.100) at 100.degree. C. in the resistor layer is at least 2.5. By maintaining these resistance-temperature characteristics, heat fusion bonding can be effectively prevented at the printing operation, and the printing sensitivity and image quality can be improved.
    • PCT No.PCT / JP89 / 00961 Sec。 371日期1990年5月18日第 102(e)日期1990年5月18日PCT提交1989年9月21日PCT公布。 出版物WO90 / 03274 日本1990年04月5日。本发明的电热转印片包括基材片,形成在基片的一个表面上的至少一个电阻层和形成有可热移染料和粘合剂的染料层 在基片的另一个表面上。 该转印片的特征在于,至少一个电阻层具有正电阻温度系数,100℃下的电阻值(R100)与25℃下的电阻值(R25)的比值R100 / R25 电阻层至少为1.2,电阻值(R200)在200℃下的电阻值R200 / R100与电阻层100℃的电阻值(R100)的比为2.5以上。 通过保持这些电阻温度特性,可以有效地防止在打印操作时的热熔接,并且可以提高打印灵敏度和图像质量。
    • 29. 发明授权
    • Dye receiving
    • 染料接收
    • US4908345A
    • 1990-03-13
    • US163757
    • 1988-04-11
    • Noritaka EgashiraHitoshi Arita
    • Noritaka EgashiraHitoshi Arita
    • B41M5/52
    • B41M5/5272Y10S428/913Y10S428/914Y10T428/31786
    • The dye receiving sheet according to the present invention is a sheet to be used in combination with a heat transfer sheet provided with a dye layer, and comprises a receiving layer (3) for receiving the dye migrating from the above heat transfer sheet during heating printing formed on at least one surface of a sheet substrate (2). A specific feature of the dye receiving sheet according to the present invention is that the above receiving layer (3) comprises a specific modified polyester resin, namely, a phenyl group modified polyester resin and/or a long chain methylene group modified polyester resin, and by constituting the receiving layer (3) of such a resin, the dyeability of the printed image can be improved, and further the light resistance (weathering resistance) of the image obtained can be improved.
    • PCT No.PCT / JP87 / 00439 Sec。 371日期:1988年4月11日 102(e)日期1988年4月11日PCT提交1987年6月30日PCT公布。 公开号WO88 / 00139 日本1987年1月14日。根据本发明的染料接收片材是与设置有染料层的传热片材组合使用的片材,并且包括用于接收从所述染色剂迁移的染料的接收层(3) 在片状基板(2)的至少一个表面上形成的加热印刷期间的上述传热片材。 根据本发明的染料接收片的具体特征是上述接收层(3)包含特定的改性聚酯树脂,即苯基改性聚酯树脂和/或长链亚甲基改性聚酯树脂,以及 通过构成这种树脂的接受层(3),可以提高印刷图像的染色性,进一步提高所得图像的耐光性(耐候性)。