Ink cartridge for a print head of an ink-jet printer

Details Ink cartridge for a print head of an ink-jet printer Ink cartridge for a print head of an ink-jet printer

1996-10-29

1999-06-29

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Fluid or fluid source handling means

B41J 2175

Patent

active

059175257

ABSTRACT:
The ink cartridge comprises a housing with a housing bottom (11) which has an opening for placement onto a stub feed tube of a print head. At the lower edge the opening (15), there is a radially inward projecting sealing lip (24) which is pressed elastically against a cylindrical element (27) of a transport guard (2). Between the cylindrical element (27) and lip (24), there is formed a capillary sealing gap which expands in the downward direction. An annular recess (36) which narrows toward the recess bottom, and a capillary gap (35) form additional steps of a capillary seal. The air supply opening in the housing lid is also sealed by means of a multi-step capillary seal against the escape of ink. This facilitates economical production.

REFERENCES:
patent: 4967207 (1990-10-01), Ruder
patent: 4968998 (1990-11-01), Allen
patent: 5555238 (1996-09-01), Miyazawa
patent: 5574489 (1996-11-01), Cowger et al.
patent: 5576749 (1996-11-01), Mochizuki et al.
patent: 5633667 (1997-05-01), Miyazawa
Replaceable Ink Cartridge for Ink Jet Print Head; IBM Technical Disclosure Bulletin; pp. 459-462 Jun. 1991.

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