Pressure pump system

Details Pressure pump system Pressure pump system

2006-09-26

2006-09-26

Vo, Ahn T. N. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S085000

Reexamination Certificate

active

07111917

ABSTRACT:
A system for delivering at least two distinct pressures to a print head of an ink jet printer includes a pump, a passage in communication with the pump and the print head, and a valve. The pump is for delivering positive pressure to the print head of the ink jet printer. The passage includes an opening, and the valve selectively opens and closes the opening.

REFERENCES:
patent: 4558326 (1985-12-01), Kimura et al.
patent: 4598303 (1986-07-01), Peekema et al.
patent: 5646666 (1997-07-01), Cowger et al.

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