发明授权
US5736995A Temperature control of thermal inkjet printheads by using synchronous
non-nucleating pulses
失效
使用同步非成核脉冲对热喷墨打印头进行温度控制
- 专利标题: Temperature control of thermal inkjet printheads by using synchronous non-nucleating pulses
- 专利标题(中): 使用同步非成核脉冲对热喷墨打印头进行温度控制
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申请号: US520225申请日: 1995-08-28
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公开(公告)号: US5736995A公开(公告)日: 1998-04-07
- 发明人: Jaime H. Bohorquez , George H. Corrigan , King-Wah W. Yeung
- 申请人: Jaime H. Bohorquez , George H. Corrigan , King-Wah W. Yeung
- 申请人地址: CA Palo Alto
- 专利权人: Hewlett-Packard Company
- 当前专利权人: Hewlett-Packard Company
- 当前专利权人地址: CA Palo Alto
- 主分类号: B41J2/05
- IPC分类号: B41J2/05
摘要:
A technique for controlling print quality in an inkjet printer by delivering synchronized heating, non-printing pulses and printing pulses to the ink firing resistors during print firing operations such as during the printing of a swath. A temperature of the printhead substrate is measured and compared against a reference temperature during printing operations. If the measured temperature is below the reference temperature, then the printhead substrate is heated during the printing operations to bring the substrate up to the reference temperature. The heating is done by delivering synchronized heating non-printing pulses and printing pulses to the ink firing resistors during selected print firing periods, wherein either the heating pulses or the printing pulses, but not both, occur during a selected print firing period. The heating pulses are logically OR-ed with the printing pulses to achieve the synchronization.