Ink jet printing device and image forming apparatus

Details Ink jet printing device and image forming apparatus Ink jet printing device and image forming apparatus

2008-07-08

2008-07-08

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S012000, C347S009000, C347S043000

Reexamination Certificate

active

07396106

ABSTRACT:
An ink jet printing device comprises a head unit, a head-unit moving unit, a recording-medium moving unit, and a control unit controlling the head unit, the head-unit moving unit, and the recording-medium moving unit. The control unit is configured to carry out printing so that a rear-end portion of discharge nozzles in an array direction after printing of a printing region and a front-end portion of the discharge nozzles in the array direction before printing of a non-printed region overlap each other with respect to a sub-scanning direction, and invalid nozzles that do not discharge ink drops are determined from among arbitrary ones of overlapping discharge nozzles including a front-end portion and a rear-end portion in the array direction of the discharge nozzles.

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