Liquid ejection head, liquid ejection apparatus and image...

Details Liquid ejection head, liquid ejection apparatus and image... Liquid ejection head, liquid ejection apparatus and image...

2007-11-20

2007-11-20

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S019000

Reexamination Certificate

active

11391270

ABSTRACT:
The liquid ejection head comprises a nozzle surface in which a plurality of nozzles for ejecting droplets of liquid toward an ejection receiving medium are arranged two-dimensionally in conditions satisfying the following relationships: L_pitch=L×k/(n−1), where: k≦m+1; L_pitch is a distance in a first direction on the nozzle surface between a pair of the nozzles that eject the droplets to form dots that are aligned adjacently in a second direction on the ejection receiving medium, the first direction being a direction in which the ejection receiving medium is moved relatively with respect to the liquid ejection head, the second direction being substantially perpendicular to the first direction; L is a maximum distance between the nozzles in the first direction on the nozzle surface; n is a number of the nozzles in the first direction on the nozzle surface, and is an integer not less than 4; m is a number of skipped nozzles indicating a number of nozzles disposed in the first direction within the distance L_pitch between the pair of the nozzles in the first direction and is an integer satisfying 1≦m≦n/2; and k is a positive integer.

REFERENCES:
patent: 6921149 (2005-07-01), Okuda et al.
patent: 7008042 (2006-03-01), Niekawa
patent: 2002/0101475 (2002-08-01), Grose et al.
patent: 2004/0150693 (2004-08-01), Kojima et al.
patent: 2005/0024428 (2005-02-01), Matsuo et al.
patent: 2002-273878 (2002-09-01), None
patent: 2004-090504 (2004-03-01), None
patent: 2004-167982 (2004-06-01), None

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