Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2011-08-02
2011-08-02
Do, An H (Department: 2853)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
C347S012000, C347S086000
Reexamination Certificate
active
07988257
ABSTRACT:
An ink cartridge to prevent image degradation due to a misalignment of nozzles in a transfer direction of a printing medium and a transverse direction includes a print head substrate, a first head unit including at least one first print head chip which is disposed on the print head substrate and includes a plurality of first nozzles arranged in plural lines in a second direction perpendicular to a first direction which is a transfer direction of a printing medium, thereby forming a first line in the second direction, and a second head unit including at least one second print head chip which is disposed on the print head substrate and which has an ink jetting area overlapping a predetermined area of the first line, thereby forming an overlapping area, and which includes a plurality of second nozzles arranged in plural lines in the second direction, thereby forming a second line spaced from the first line, and dots formed by the first and the second nozzles, which neighbor each other in the overlapping area when jetting ink, have a gap with respect to the first and the second directions within a range satisfying the following equation:in-line-formulae description="In-line Formulae" end="lead"?T≦(n±⅛)*P(nis integer)in-line-formulae description="In-line Formulae" end="tail"?wherein “T” denotes a gap between dots formed by the first and the second nozzles neighboring each other, and “P” denotes a pixel value.
REFERENCES:
patent: 5625391 (1997-04-01), Hirabayashi et al.
patent: 6164745 (2000-12-01), Nagoshi et al.
patent: 2006/0132519 (2006-06-01), Kovacs
patent: 2003182142 (2003-07-01), None
Jung Myung-song
Kim Dong-Hwan
Kim Tae-Kyun
Lee Jae-Cheol
Park Chang-shin
Do An H
Samsung Electronics Co,. Ltd.
Stanzione & Kim LLP
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