Ink cartridge

Details Ink cartridge Ink cartridge

1997-12-02

2000-05-16

Tran, Huan

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

060626844

ABSTRACT:
An ink cartridge includes an ink cartridge case having an ink chamber containing ink and a foam chamber containing a porous member impregnated with ink. An ink supply hole formed in the ink chamber is provided with a filter having fine pores whose mesh is smaller than that of the cell pores of the porous member. The filter is mounted into the ink supply hole from outside the cartridge case, and fixed by an adapter. The filter prevents ink leakage during connection of the ink cartridge to an ink introducing portion of a recording head due to surface tension in a meniscus of the ink formed in fine pores of the filter. Ink flows through the filter toward the recording head when the ink cartridge is connected to the recording head because the surface tension in the ink in each fine pore of the filter is destroyed during connection.

REFERENCES:
patent: 5509140 (1996-04-01), Koitabashi et al.
patent: 5721577 (1998-02-01), Ostermeier et al.
patent: 5821965 (1998-10-01), Oda et al.

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