发明名称 |
Liquid ejection head having a light receiving element and a method of inspecting liquid ejection head |
摘要 |
A liquid ejection head includes a member having ejection ports and dummy ejection ports. The ejection ports are provided in correspondence with energy-generating elements used in ejecting liquid. The dummy ejection ports are provided in correspondence with a light-receiving element outputting current whose level changes in accordance with the intensity of light applied thereto. By detecting the level of current that is output from the light-receiving element, the shapes of the ejection ports are estimated.
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申请公布号 |
US8500233(B2) |
申请公布日期 |
2013.08.06 |
申请号 |
US201113211035 |
申请日期 |
2011.08.16 |
申请人 |
NAGAI MASATAKA;TAGAWA YOSHINORI;IBE SATOSHI;ASAI KAZUHIRO;MURAYAMA HIROYUKI;CHIDA MITSURU;CANON KABUSHIKI KAISHA |
发明人 |
NAGAI MASATAKA;TAGAWA YOSHINORI;IBE SATOSHI;ASAI KAZUHIRO;MURAYAMA HIROYUKI;CHIDA MITSURU |
分类号 |
B41J29/393 |
主分类号 |
B41J29/393 |
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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