Ink cartridge and method of regulating fluid flow

Details Ink cartridge and method of regulating fluid flow Ink cartridge and method of regulating fluid flow

2006-01-10

2006-01-10

Feggins, K. (Department: 2861)

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

Reexamination Certificate

active

06984030

ABSTRACT:
An ink cartridge has an ink storage chamber, an ink supply port and a negative pressure generating mechanism which selectively blocks and opens fluid communication between the ink storage chamber and the ink supply port as a consequence of ink consumption. The negative pressure generating mechanism includes an elastic member having first and second surfaces and a sealing portion, the sealing portion having a through-hole, an ink flow path communicating with the ink supply port and having an opening portion at a position where the sealing portion of the elastic member contacts with and separates from the opening portion, the opening portion facing the through-hole, and a communicating portion facing the first surface of the elastic member and communicating with the ink storage chamber. A space portion faces the second surface of the elastic member and communicates with the ink supply port.

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European search report, dated Mar. 3, 2004, in European Patent Application EP 03 02 6112.

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