Incremental printing of symbolic information – Ink jet – Ejector mechanism
Reexamination Certificate
2005-11-22
2005-11-22
Nguyen, Lamson (Department: 2861)
Incremental printing of symbolic information
Ink jet
Ejector mechanism
Reexamination Certificate
active
06966626
ABSTRACT:
The technique is provided that reduces degraded quality in printed results due to nozzles employed to record dots on each pixel in combination with the order in which these dots are recorded on pixels. A plurality of nozzles on a print head are grouped, in order from the nozzles that first reach a point over the print medium, into a first nozzle group, a second nozzle group, and a third nozzle group. During main scanning, certain pixels in main scan lines positioned facing the nozzles of the first nozzle group are targeted for dot recording. All pixels contained in main scan lines positioned facing the nozzles of the second nozzle group are targeted for dot recording. Those pixels among the pixels contained in main scan lines positioned facing the nozzles of the third nozzle group, and that have not previously had dots recorded thereon by the first nozzle group in a previous main scan, are targeted for dot recording. The number of pixels N1recorded by the first nozzle group and the number of pixels N3recorded by the third nozzle group in the course of a single main scan is adjusted to a suitable ratio.
REFERENCES:
patent: 6565192 (2003-05-01), Vinals et al.
patent: 6779872 (2004-08-01), Shioya et al.
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