发明授权
- 专利标题： Thermal transfer printing dye sheet
- 专利标题（中）： 热转印染色片
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申请号： US624439申请日： 1996-07-16
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公开(公告)号： US5691273A公开(公告)日： 1997-11-25
- 发明人: Andrew Trevithick Slark , Richard Anthony Hann
- 申请人： Andrew Trevithick Slark , Richard Anthony Hann
- 申请人地址： GB2 London
- 专利权人： Imperial Chemical Industries PLC
- 当前专利权人： Imperial Chemical Industries PLC
- 当前专利权人地址： GB2 London
- 优先权： GBX9320592 19931006
- 主分类号： B41M5/035
- IPC分类号： B41M5/035 ; B41M5/382 ; B41M5/395 ; B41M5/38
摘要：
A dye sheet for thermal transfer printing comprising a substrate having on one surface thereof a dye coat which comprises a dye capable of thermal transfer dispersed in a polymer binder, characterized in that R-1 is a minimum where R=K.sub.sl /K.sub.tt, wherein K.sub.sl =AD.sub.sl /AP.sub.sl where AD.sub.sl is the absorption due to the dye and AP.sub.sl is the absorption due to the polymer over the surface layer; K.sub.tt =AD.sub.tt /AP.sub.tt where AD.sub.tt is the absorption due to the dye and AP.sub.tt is the absorption due to the polymer for the total thickness of the coating; and the values for AD.sub.sl, AP.sub.sl, AD.sub.tt and AP.sub.tt being measured by Attenuated Total Reflection Spectroscopy.
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