Ink jet print head

Details Ink jet print head Ink jet print head

2011-07-19

2011-07-19

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S054000

Reexamination Certificate

active

07980662

ABSTRACT:
A reliable ink jet print head enables small ink droplets to be ejected at a high frequency while preventing possible satellites and mist. A bubbling chamber, in which an energy generating element is disposed, communicates, via an ejection port portion, with an ejection port provided opposite the energy generating element. The ejection port portion is formed such that flow resistance to ink is lower in an area of the ejection port portion which is positioned inward from a center of the ejection port in an ink supply direction of ink flowing along the ink supply channel, than in an area of the ejection port portion which is positioned outward from the center of the ejection port.

REFERENCES:
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patent: 7093334 (2006-08-01), Sobrito
patent: 2004/0207692 (2004-10-01), Yamamoto et al.
patent: 2005/0012791 (2005-01-01), Anderson et al.
patent: 2008/0055368 (2008-03-01), Oikawa et al.
patent: 2008/0239011 (2008-10-01), Ide et al.
patent: 2004-42651 (2004-02-01), None
patent: 2004-42652 (2004-02-01), None

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