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    • 6. 发明授权
    • Description
    • 描述
    • US5308825A
    • 1994-05-03
    • US903329
    • 1992-06-24
    • Geert H. Defieuw
    • Geert H. Defieuw
    • B41J2/325B41M5/035B41M5/26B41M5/382B41M5/385B41M5/388B41M5/39B41M5/50B41M5/52B41M5/38
    • B41M5/38264Y10S428/913Y10S428/914Y10T428/24942Y10T428/31565
    • Thermal dye transfer printing method for obtaining high density black images comprising the steps of (1) imagewise heating a first area of a dye-donor element or a first dye-donor element comprising a support having thereon a dye layer containing a dye or a mixture of dyes thereby transferring a first dye image to a dye-receiving element comprising a support having thereon a dye image-receiving layer and (2) subsequently imagewise heating a second area of said dye-donor element or a second dye donor element thereby transferring in register with the first dye image a second dye image to said dye-receiving element wherein the superposition of the first transferred dye image and the second transferred dye image yield a black dye image, characterized in that the concentration of those essential composing dyes having a higher retransfer degree than the other essential composing dyes is higher in the second area or in the second dye-donor element than in the first area or first dye-donor element, and dye-donor element for use according to said method.
    • 用于获得高密度黑色图像的热染料转印印刷方法,包括以下步骤:(1)成像加热染料供体元件的第一区域或第一染料供体元件,所述第一染料供体元件包含其上含有染料或混合物的染料层的载体 染料,从而将第一染料图像转印到染料接收元件,染料接受元件包括其上具有染料影像接受层的载体,和(2)随后成像加热所述染料供体元件或第二染料供体元件的第二区域, 将所述第一染料图像与所述染料接收元件对准,其中所述第一转印染料图像和所述第二转印染料图像的叠加产生黑色染料图像,其特征在于,所述染料接收元件的那些基本组成染料的浓度高 在第二区域或第二染料供体元件中,比第一区域或第一染料供体电极中的其他重要组成染料的再转化度高 以及根据所述方法使用的染料供体元件。