Liquid ejection head

Details Liquid ejection head Liquid ejection head

2008-05-23

2010-11-02

Nguyen, Lamson D (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S047000

Reexamination Certificate

active

07824009

ABSTRACT:
A liquid ejection head capable of achieving satisfactory printing without nozzle misfiring in an area close to an end of a nozzle row and droplet misdirection is provided. The ejection orifices, except for dummy orifices, are provided with protrusions. Four operative ejection orifices located close to each of the ends of each ejection orifice row are defined as end-located ejection orifices. Each of the protrusions provided in the end-located ejection orifices has a shorter length than that of the protrusion provided in the ejection orifice located in the central portion of the nozzle row.

REFERENCES:
patent: 5384587 (1995-01-01), Takagi et al.
patent: 5620614 (1997-04-01), Drake et al.
patent: 6598951 (2003-07-01), Ikemoto et al.
patent: 10-235874 (1998-09-01), None
patent: 2004-209741 (2004-07-01), None

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