发明名称 |
Thermal head, manufacturing method therefor, and printer |
摘要 |
There are provided a method of manufacturing a thermal head having a hollow portion at a position opposing a heating resistor, the manufacturing method assuring a sufficient strength to an upper plate substrate of the thermal head. The manufacturing method includes: processing a top surface of the upper plate substrate bonded to a support substrate to thin the upper plate substrate to a thickness T; wherein the processing comprises processing the top surface of the upper plate substrate so that a roughness Ra of the top surface of the upper plate substrate satisfies the following expression: Ra≦̸loge(T2)/(3×106)+6.5×10−6. |
申请公布号 |
US8212849(B2) |
申请公布日期 |
2012.07.03 |
申请号 |
US20100797980 |
申请日期 |
2010.06.10 |
申请人 |
KOROISHI KEITARO;MOROOKA TOSHIMITSU;SHOJI NORIYOSHI;SANBONGI NORIMITSU;SEIKO INSTRUMENTS INC. |
发明人 |
KOROISHI KEITARO;MOROOKA TOSHIMITSU;SHOJI NORIYOSHI;SANBONGI NORIMITSU |
分类号 |
B41J2/335 |
主分类号 |
B41J2/335 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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