Progressive and fast printmask revision based on incremental...

Details Progressive and fast printmask revision based on incremental... Progressive and fast printmask revision based on incremental...

2007-04-24

2007-04-24

Nguyen, Lamson (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S019000, C358S001900

Reexamination Certificate

active

10994766

ABSTRACT:
When condition of a printing element (e.g. inkjet nozzle) changes, essentially full mask rows invoking the element are redone from scratch, best so as to fully satisfy pixel-grid neighbor conditions. This is faster than redoing a whole mask as in prior popup or precook /reheat methods, and yields better printouts than prior row-by-row mask revision (e.g. directly replacing a weak nozzle by a good one across whole rows). This method is best independent of prior mask versions, and uses no prebuilt matrix of backup/alternate entries. The number of rows redone is typically 7% to 14% below a nominal/baseline value.

REFERENCES:
patent: 5581284 (1996-12-01), Hermanson
patent: 6575549 (2003-06-01), Silverbrook
patent: 2005/0174384 (2005-08-01), Koitabashi et al.

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