Printhead systems having multiple ink chambers with balanced...

Details Printhead systems having multiple ink chambers with balanced... Printhead systems having multiple ink chambers with balanced...

2005-04-07

2009-06-09

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S086000

Reexamination Certificate

active

07543913

ABSTRACT:
Ink delivery systems achieve balanced ink flow by positioning two or more ink chambers around ink ejection mechanisms in a printhead. A plurality of pie-shaped ink chambers may be arranged in a circle above an ink ejection mechanism, which provides short ink paths from each ink chamber, and ink paths having approximately the same length. This fosters even ink flow rates and equal pressure drop/loss of ink supplies, thereby improving ink feeds to a printhead and providing improved jetting efficiency and printhead performance.

REFERENCES:
patent: 3823409 (1974-07-01), Carrell
patent: 4714936 (1987-12-01), Helinski et al.
patent: 5659345 (1997-08-01), Altendorf
patent: 6344904 (2002-02-01), Mercer
patent: 7152954 (2006-12-01), Katayama
patent: 2002/0130934 (2002-09-01), Chan et al.
patent: 2004/0080578 (2004-04-01), Dunfield et al.

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