- 专利标题： Constant current mode firing circuit for thermal inkjet-printing nozzle
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申请号： US11134015申请日： 2005-05-20
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公开(公告)号： US09283750B2公开(公告)日： 2016-03-15
- 发明人: Hang Liao , Bao Yeh , Galen H. Kawamoto , Dennis J. Schloeman , Richard R. Clark
- 申请人： Hang Liao , Bao Yeh , Galen H. Kawamoto , Dennis J. Schloeman , Richard R. Clark
- 申请人地址： US TX Houston
- 专利权人： Hewlett-Packard Development Company, L.P.
- 当前专利权人： Hewlett-Packard Development Company, L.P.
- 当前专利权人地址： US TX Houston
- 代理商 Michael A. Dryja
- 主分类号： B41J2/045
- IPC分类号： B41J2/045
摘要：
A firing circuit for a thermal inkjet-printing nozzle includes a heater resistor and a switch. The heater resistor heats ink to cause the ink to be ejected from the nozzle. The heater resistor has a first end and a second end, the second end connected to a ground. The switch controls activation of the heater resistor. The switch has a first end connected to a voltage source and a second end connected to the first end of the heater resistor. The switch operates in a constant current mode, such that an at least substantially constant current flows through the heater resistor upon activation.
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