发明名称 Ink delivery system and method for controlling fluid pressure therein
摘要 An actively-controlled recirculating ink delivery system is provided that incorporates active control of pressures downstream of the printhead. This is achieved through the use of a device (such as a pump, return valve, combination thereof or similar devices) that provides active control of downstream ink pressures. A pressurized ink supply, pressure sensors, an air and heat exchanger are also provided, thereby improving start up, normal operation, purging and shut down procedures. Because the pressurized ink supply is not restricted to sit at a particular vertical distance below the printhead, backpressure may be changed quickly and easily through electronic control, and system priming is considerably quicker than with conventional air-pressurized systems.
申请公布号 US6428156(B1) 申请公布日期 2002.08.06
申请号 US19990432453 申请日期 1999.11.02
申请人 HEWLETT-PACKARD COMPANY 发明人 WALLER DAVID J.;BOYD MELISSA D.;KOEGLER, III JOHN M.
分类号 B41J2/175;B41J2/18;B41J2/19;B41J29/38;(IPC1-7):B41J2/18 主分类号 B41J2/175
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