Printhead assembly having vertically overlapping ink flow...

Details Printhead assembly having vertically overlapping ink flow... Printhead assembly having vertically overlapping ink flow...

2006-06-28

2009-06-02

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

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S066000

Reexamination Certificate

active

07540594

ABSTRACT:
A printhead body for mounting a micro-fluid ejection chip includes a floor having an interior side and an exterior side, the exterior side being configured for mounting at least one micro-fluid ejection chip. A plurality of body vias extends through the floor from the interior side to the exterior side. The plurality of body vias is positioned to supply ink to each micro-fluid ejection chip. A plurality of ink flow channels is formed over the interior side of the floor. The plurality of ink flow channels include at least a first ink flow channel vertically overlapping a separate and independent second ink flow channel. Each individual ink flow channel of the plurality of ink flow channels is in fluid communication with at least one body via of the plurality of body vias.

REFERENCES:
patent: 6068367 (2000-05-01), Fabbri
patent: 6250738 (2001-06-01), Waller et al.
patent: 6350013 (2002-02-01), Scheffelin et al.
patent: 6729713 (2004-05-01), Shirakawa
patent: 6766817 (2004-07-01), da Silva
patent: 6918404 (2005-07-01), da Silva
patent: 7066586 (2006-06-01), da Silva
Dias da Silva, Elson, e-mail transmission to Ryan L. Willis dated Monday, Mar. 31, 2008, 3:06 PM, Subject: Requesting IDS of US 6,766,817 for patents on porosity by Unsaturated Hydraulic Flow.

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