Inkjet head and nozzle plate of inkjet head

Details Inkjet head and nozzle plate of inkjet head Inkjet head and nozzle plate of inkjet head

2007-09-04

2007-09-04

Nguyen, Thinh (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

Reexamination Certificate

active

11006768

ABSTRACT:
An inkjet head includes plural nozzles that eject ink. The nozzles are arranged so that (a) the nozzles are arranged in a first direction on an ink ejection surface to form a plurality of rows parallel to one another; and (b) when the nozzles are projected from a second direction, which is parallel to the ink ejection surface and perpendicular to the first direction, onto a virtual straight line extending in the first direction, projective dots of the nozzles are arranged at equally spaced intervals on the virtual straight line. A spatial frequency, which is determined based on an appearance interval of a most-distant adjacent projective dot pair in the first direction, is lower than a spatial frequency corresponding to a peak value of a visual transfer function.

REFERENCES:
patent: 6310637 (2001-10-01), Shimada et al.
patent: 6886904 (2005-05-01), Otsuki
patent: 2004/0150693 (2004-08-01), Kojima et al.
patent: 0 773 108 (1997-05-01), None
patent: 1 316 427 (2003-06-01), None
patent: A 2002-103604 (2002-04-01), None
patent: A 2003-237078 (2003-08-01), None

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