发明授权
- 专利标题: Recording material containing leuco dye
- 专利标题(中): 含有无色染料的记录材料
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申请号: US115064申请日: 1987-10-30
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公开(公告)号: US4775656A公开(公告)日: 1988-10-04
- 发明人: Toru Harada , Toshiyuki Watanabe
- 申请人: Toru Harada , Toshiyuki Watanabe
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX61-259965 19861030
- 主分类号: C09B11/28
- IPC分类号: C09B11/28 ; B41M5/145 ; B41M5/327 ; C07D495/20 ; G03F7/004 ; G03F7/028 ; B41M5/16 ; C07D407/04 ; C07D493/10
摘要:
A recording material comprises a layer containing a leuco dye provided on a support, characterized in that the leuco dye has the formula (I): ##STR1## in which one of X and Y is a single bond and the other is sulfur atom; each of R.sub.1 and R.sup.2 independently is an alkyl group, a cycloalkyl group or an aralkyl group; each of R.sup.3 and R.sup.4 independently is hydrogen, a halogen atom, an alkyl group, an alkoxy group, a cycloalkyl group, an aralkyl group or an aryloxy group; R.sup.5 is hydrogen, a halogen atom, an alkyl group, an alkoxy group, nitro or amino; and each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 may have one or more substituent groups.
公开/授权文献
- USD433770S Bulb attachment 公开/授权日:2000-11-14