Invention Grant
- Patent Title: Heat-sensitive transfer sheet for use in heat-sensitive transfer system and image-forming method using heat-sensitive transfer system
- Patent Title (中): 用于热敏转印系统的热敏转印片和使用热敏转印系统的成像方法
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Application No.: US12058573Application Date: 2008-03-28
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Publication No.: US08129309B2Publication Date: 2012-03-06
- Inventor: Akito Yokozawa , Kazuaki Oguma
- Applicant: Akito Yokozawa , Kazuaki Oguma
- Applicant Address: JP Tokyo
- Assignee: Fujifilm Corporation
- Current Assignee: Fujifilm Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2007-088756 20070329
- Main IPC: B41M5/035
- IPC: B41M5/035 ; B41M5/382

Abstract:
A heat-sensitive transfer sheet, comprising a base film, at least three heat-sensitive transfer layers containing heat-sensitively transferable dyes and a resin, and a heat-resistant slipping layer, in which the at least three heat-sensitive transfer layers contains two or more dyes different from each other; the heat-sensitive transfer layers are provided on one face of the base film so as not to be superposed on one another; the heat-sensitive transfer layers contains, as the resin, at least one of a polyvinylbutyral resin and a polyvinyl acetacetal resin, each having a polymerization degree of 200 to 1,000; and at least one of the heat-sensitive transfer layers contains the polyvinylbutyral resin as described above and the polyvinyl acetacetal resin described above, and has a ratio of the polyvinylbutyral to the polyvinyl acetacetal different from those in the other heat-sensitive transfer layers.
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