发明名称 |
Element substrate, printhead, head cartridge, and printing apparatus |
摘要 |
This invention relates to an element substrate capable of confirming an electrical connection status before a printhead malfunctions. The element substrate is a substrate for a printhead, which is detachable from a printing apparatus and includes a plurality of printing elements, a logical circuit for controlling the printing elements, and a voltage application terminal for applying a driving voltage to drive the printing elements. The logical circuit is driven at a voltage lower than the driving voltage. The element substrate includes a connection status output circuit which outputs a signal reflecting the electrical connection status between the printhead and the printing apparatus on the basis of the driving voltage.
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申请公布号 |
US7841678(B2) |
申请公布日期 |
2010.11.30 |
申请号 |
US20070947515 |
申请日期 |
2007.11.29 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
IMANAKA YOSHIYUKI;TAKEUCHI SOUTA;HATSUI TAKUYA;YAMAGUCHI TAKAAKI;MATSUI TAKAHIRO;KUBO KOUSUKE |
分类号 |
B41J29/38 |
主分类号 |
B41J29/38 |
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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