发明授权
- 专利标题： Print head maintenance method and apparatus with retractable wiper
- 专利标题（中）： 带可伸缩刮水器的打印头维护方法和设备
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申请号： US369613申请日： 1995-01-06
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公开(公告)号： US5570117A公开(公告)日： 1996-10-29
- 发明人: Randy C. Karambelas , Ernest I. Esplin , Terry A. Smith , Mike C. Gordon , Stephen H. Skidmore
- 申请人： Randy C. Karambelas , Ernest I. Esplin , Terry A. Smith , Mike C. Gordon , Stephen H. Skidmore
- 申请人地址： OR Wilsonville
- 专利权人： Tektronix, Inc.
- 当前专利权人： Tektronix, Inc.
- 当前专利权人地址： OR Wilsonville
- 主分类号： B41J2/165
- IPC分类号： B41J2/165
摘要：
A method and an apparatus (10) for cleaning an ink jet print head (12) draws contaminates from orifices (20) in the print head onto an orifice plate (14) and then wipes the orifice plate. The maintenance apparatus includes a purge cap (24) that has a recessed region (40) with an open end (36). The top side margins (42) of the open end define a periphery (44) around which a seal (60) is positioned. A positioning system (30) urges the orifice plate against the seal. A heating system (128) and a vacuum system (74) cooperate to create a differential pressure across the orifices to draw contaminates carried by liquid ink out of them and onto the orifice plate. A resilient wiper assembly (26) including a spring-mounted wiper blade (78) is positioned in and nominally extends outwardly of the recessed region of the purge cap. The positioning system moves the purge cap downwardly against the orifice plate so that the wiper blade engages and wipes the contamination from the orifice plate.
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IPC分类:
