Ink cartridge used with an ink jet printer

Details Ink cartridge used with an ink jet printer Ink cartridge used with an ink jet printer

2005-01-11

2005-01-11

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

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C347S087000

Reexamination Certificate

active

06840608

ABSTRACT:
An ink cartridge for an ink jet printer is provided. The provided ink cartridge has an ink reservoir and a housing for covering the ink reservoir with a negative pressure maintenance unit therebetween, to maintain the inner pressure of the ink reservoir under a negative pressure. Since the negative pressure maintenance unit does not contact ink in the ink reservoir, the negative pressure maintenance unit does not corrode. In addition, the negative pressure maintenance unit is installed between the housing and the ink reservoir while occupying a small space, and thus improving the filling efficiency of ink in the ink reservoir.

REFERENCES:
patent: 4992802 (1991-02-01), Dion et al.
patent: 5541632 (1996-07-01), Khodapanah et al.
patent: 5574490 (1996-11-01), Gragg et al.
patent: 20030067520 (2003-04-01), Inoue et al.

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