Hardcopy apparatus and method

Details Hardcopy apparatus and method Hardcopy apparatus and method

2006-10-10

2006-10-10

Patel, Vip (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S040000, C347S041000

Reexamination Certificate

active

07118188

ABSTRACT:
In a method of printing with overlapping printhead dies, artifacts in the printed image caused by the printing nozzles in the overlapping region are removed, either by measuring the width of the band produced in the overlapping region and selecting an appropriate depletion or propletion printing mask for subsequent printing operations, or by printing out a test pattern in which areas corresponding to a range of depletion and propletion masks are printed out and the optimal mask is selected for subsequent printing operations. The dies overlap by only a few rows of nozzles. The method may be employed in fixed printhead apparatus (e.g. page wide arrays) or in a scanning printhead apparatus.

REFERENCES:
patent: 6010205 (2000-01-01), Billet
patent: 6033137 (2000-03-01), Ito
patent: 6069709 (2000-05-01), Harrington
patent: 6086181 (2000-07-01), Majette et al.
patent: 6174039 (2001-01-01), Takahashi et al.
patent: 6299284 (2001-10-01), Alfaro
patent: 6375307 (2002-04-01), Vinals
patent: 6464332 (2002-10-01), Silverbrook et al.
patent: 6488351 (2002-12-01), Miller et al.
patent: 6536869 (2003-03-01), Bland et al.
patent: 0 727 757 (1996-08-01), None
Patent Abstracts of Japan, vol. 1996:05, May 31, 1996 & JP 08-025693 A (Canon, Inc.), Jan. 30, 1996—abstract only.

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