Printer with ink pressure regulator

Details Printer with ink pressure regulator Printer with ink pressure regulator

2009-11-30

2011-10-11

Mruk, Geoffrey (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S094000

Reexamination Certificate

active

08033635

ABSTRACT:
An inkjet printer includes a printhead integrated circuit (IC) with an array of nozzles for ejecting ink on to print media; an ink supply reservoir for storing ink; an ink supply line defining a flow path from the ink supply reservoir to the printhead IC; a valve in the ink supply line proximate the printhead IC selectively closing the flow path to the printhead IC; an ink purge actuator for forcing a volume of ink out of the printhead under pressure; a printhead maintenance system having a collection roller for rotating such that the collection roller surface collects ink purged from the printhead and draws the ink away; and a pressure regulator provided in the ink supply reservoir downstream from the ink supply reservoir. The pressure regulator is normally biased shut, and operable to open upon a threshold pressure difference between ink upstream of the pressure regulator and ink downstream of the pressure regulator.

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