发明授权
- 专利标题： Coordination of pressure and temperature during ink phase change
- 专利标题（中）： 油墨相变期间压力和温度的协调
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申请号： US13022278申请日： 2011-02-07
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公开(公告)号： US08506063B2公开(公告)日： 2013-08-13
- 发明人: Scott Limb , John S. Paschkewitz , Eric J. Shrader
- 申请人： Scott Limb , John S. Paschkewitz , Eric J. Shrader
- 申请人地址： US CA Palo Alto
- 专利权人： Palo Alto Research Center Incorporated
- 当前专利权人： Palo Alto Research Center Incorporated
- 当前专利权人地址： US CA Palo Alto
- 代理机构： Hollingsworth Davis, LLC
- 主分类号： B41J2/175
- IPC分类号： B41J2/175
摘要：
A print head assembly for an ink jet printer includes an ink flow path configured to allow passage of a phase-change ink. A pressure unit is fluidically coupled to the ink flow path to apply a pressure to the ink. The applied pressure is controlled by a control unit during a time that the ink in the ink flow path is undergoing a phase change. During the phase change, a portion of the ink in a first region of the ink flow path is in liquid phase and another portion of the ink in another region of the ink flow path is in solid phase. A constant or variable pressure can be applied at least to the liquid phase portion of the ink during a phase transition from a liquid phase to a solid phase or from a solid phase to a liquid phase.
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