发明名称 |
Ink jet recording apparatus and ink jet print head |
摘要 |
An ink jet recording apparatus is provided which can detect ink in a print head highly precisely with a simple construction. The apparatus includes: a detection electrode to detect, through the ink on the ink jet print head board, a voltage change between print elements and drive elements which is produced as the print elements are driven; a periodical driver to drive the print elements at a predetermined drive frequency; a voltage detector to periodically detect an output voltage of the detection electrode at a timing corresponding to the drive frequency; and a state check device to check an ink ejection state of the ink jet print head according to a result of the detection by the voltage detector.</PTEXT>
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申请公布号 |
US6631970(B2) |
申请公布日期 |
2003.10.14 |
申请号 |
US20010854680 |
申请日期 |
2001.05.15 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
SATO TOMONORI;TAKAGI SHINJI;YANO KENTARO;IKEDA TETSUHITO |
分类号 |
B41J2/01;B41J2/05;B41J2/14;B41J2/175;(IPC1-7):B41J29/393 |
主分类号 |
B41J2/01 |
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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