发明授权
- 专利标题: Developing agents for (photo) thermographic systems
- 专利标题(中): (照片)热成像系统的开发代理
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申请号: US382899申请日: 1995-02-03
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公开(公告)号: US5663042A公开(公告)日: 1997-09-02
- 发明人: Duncan McL. A. Grieve , Justine A. Mooney , William E. Bottomley , John H. A. Stibbard , Andrew W. Mott , Robert J. D. Nairne , David C. Bays , Stephen S. C. Poon , Raymond J. Kenney , Gilbert L. Eian , Takuzo Ishida , Doreen C. Lynch , Roger A. Mader , Sharon M. Simpson , Kim M. Vogel
- 申请人: Duncan McL. A. Grieve , Justine A. Mooney , William E. Bottomley , John H. A. Stibbard , Andrew W. Mott , Robert J. D. Nairne , David C. Bays , Stephen S. C. Poon , Raymond J. Kenney , Gilbert L. Eian , Takuzo Ishida , Doreen C. Lynch , Roger A. Mader , Sharon M. Simpson , Kim M. Vogel
- 申请人地址: MN St. Paul
- 专利权人: Minnesota Mining and Manufacturing Company
- 当前专利权人: Minnesota Mining and Manufacturing Company
- 当前专利权人地址: MN St. Paul
- 优先权: GBX9404805 19940311
- 主分类号: C07F7/21
- IPC分类号: C07F7/21 ; C08G77/388 ; C09B17/02 ; C09B19/00 ; C09B21/00 ; C09B69/00 ; C09B69/10 ; G03C1/498
摘要:
A thermographic element comprising in a non-aqueous binder medium a silver salt oxidizing agent in reactive association with a compound comprising a plurality of redox color releasing moieties such that oxidation of each redox color releasing moiety causes release from said compound of a thermally diffusible dye.The compounds many of which are new incorporate two or more developer moieties into a single molecule to minimize the diffusibility of the compound. Following oxidation, either directly by the silver salt or by means of a cross-oxidizing agent, each oxidized developer moiety releases a thermally diffusible dye. The compounds are of sufficient size and molecular weight to slow or prevent diffusion in imaging systems and yet possess several active developer moieties per molecule which is advantageous over known ballasted dye releasers which comprise bulky molecules with only a single developer moiety.