发明申请
US20110012946A1 FLUID HEIGHT BACKPRESSURE DEVICE IN A SYSTEM FOR SUPPLYING FLUID TO A PRINTHEAD
有权
用于将流体供应到打印机的系统中的流体高度背压装置
- 专利标题: FLUID HEIGHT BACKPRESSURE DEVICE IN A SYSTEM FOR SUPPLYING FLUID TO A PRINTHEAD
- 专利标题(中): 用于将流体供应到打印机的系统中的流体高度背压装置
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申请号: US12504757申请日: 2009-07-17
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公开(公告)号: US20110012946A1公开(公告)日: 2011-01-20
- 发明人: Johnnie Coffey , Steven Robert Komplin , Guion Yuvano Lucas , Randal Scott Williamson
- 申请人: Johnnie Coffey , Steven Robert Komplin , Guion Yuvano Lucas , Randal Scott Williamson
- 主分类号: B41J2/175
- IPC分类号: B41J2/175
摘要:
A fluid height backpressure system includes a printhead, a fluid supply tank, a backpressure device, and an air removal device. The backpressure device responsible for supplying system backpressure includes at least one tower disposed in an upright position and having a plurality of walls defining first and second chambers for respectively communicating with the ink supply tank and a fluid supply reservoir of the printhead. The air removal device provides additional backpressure in the second chamber, allows backpressure in the system to be maintained even with an empty fluid supply tank, and also supply of ink to the fluid supply reservoir of the printhead substantially without air bubbles being introduced therein. Also, ink sensors are utilized for sensing different levels of ink in the ink supply tank and out-of-ink/ink-low conditions in the backpressure device and also to help establish and continue the operation of the backpressure device.