Ink cartridge

Details Ink cartridge Ink cartridge

2006-06-26

2009-06-30

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

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

C251S065000

Reexamination Certificate

active

07553006

ABSTRACT:
An ink cartridge has a housing with at least one ink container having an ink outlet extending to the outside and in which a differential pressure valve is mounted. The valve has a valve opening and a valve body which can move relative to it and which (relative to the ink chamber) sits sealed on the valve opening, loaded from the outside with a predetermined closing force, and can be moved to the outside from the valve opening against the closing force. In order to form a differential pressure valve which is stable over the long term, precise, easy to produce and install, the invention proposes that a first permanent magnet is attached to the valve body and relative to the valve opening a second permanent magnet is attached securely to the ink cartridge and is opposite the first permanent magnet with the same pole, so that the repelling force between the first and second permanent magnet acts as a closing force on the valve body.

REFERENCES:
patent: 4966483 (1990-10-01), Hashimoto et al.
patent: 5040002 (1991-08-01), Pollacek et al.
patent: 5381956 (1995-01-01), Robinson et al.
patent: 6325354 (2001-12-01), Hoen et al.
patent: 0 238 829 (1991-03-01), None
patent: 1 125 747 (2001-08-01), None

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