发明授权
- 专利标题： Thermal imaging with ylide dyes
- 专利标题（中）： 内鎓盐染料的热成像
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申请号： US238476申请日： 1988-08-31
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公开(公告)号： US4894358A公开(公告)日： 1990-01-16
- 发明人: Michael P. Filosa , Stephen R. Herchen , Cheryl P. Petersen
- 申请人： Michael P. Filosa , Stephen R. Herchen , Cheryl P. Petersen
- 申请人地址： MA Cambridge
- 专利权人： Polaroid Corporation
- 当前专利权人： Polaroid Corporation
- 当前专利权人地址： MA Cambridge
- 主分类号： B41M5/28
- IPC分类号： B41M5/28 ; C07D405/14
摘要：
Disclosed is a class of dyes that can be rendered colorless by the application of heat in a silverless imaging system and which have utility in information recording and display, color hard copy and photographic systems. Certain dye ylides, for example, xanthane dye ylides are disclosed which when incorporated in a thin film can be imagewise heated to develop an image by reason of the ylide dye disassociating in the areas where heated and thereby being rendered colorless.