发明授权
- 专利标题： Wear-resistant protective film for thermal printing heads
- 专利标题（中）： 用于热敏打印头的耐磨保护膜
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申请号： US372691申请日： 1995-01-13
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公开(公告)号： US5590969A公开(公告)日： 1997-01-07
- 发明人: Masatoshi Nakayama , Masahiro Nakano , Tsukimi Endo
- 申请人： Masatoshi Nakayama , Masahiro Nakano , Tsukimi Endo
- 申请人地址： JPX Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX4-281079 19920928
- 主分类号： B41J2/335
- IPC分类号： B41J2/335 ; C01B21/082
摘要：
A wear-resistant protective film for thermal printing heads comprising Si, O, and N as principal constituent elements, contains additionally at least one alkaline earth metal selected from the group consisting of Be, Mg, Ca, Sr, Ba, and Ra. Preferably, the film has a composition SiM.sub.x O.sub.y N.sub.z in which M stands for an alkaline earth metal, x is 0.01-0.5, y is 0.1-2.0, and z is 0.2-1.8.
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