Ink-jet head, ink-jet image forming apparatus including the...

Details Ink-jet head, ink-jet image forming apparatus including the... Ink-jet head, ink-jet image forming apparatus including the...

2005-12-02

2009-02-03

Stephens, Juanita D (Department: 2853)

Incremental printing of symbolic information

Ink jet

Ejector mechanism

C347S042000, C347S015000

Reexamination Certificate

active

07484830

ABSTRACT:
An ink-jet image forming apparatus includes an ink-jet head having a nozzle unit including a first nozzle array having a plurality of nozzles of different sizes and at least one second nozzle array disposed parallel to the first nozzle array and having a plurality of nozzles of different sizes. A method of compensating for the defective nozzle includes: detecting a defective nozzle of the first nozzle array; and compensating for missing dots of the defective nozzle using the second nozzle array.

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patent: 2002-219813 (2002-08-01), None

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