Creating high spatial frequency halftone screens with...

Details Creating high spatial frequency halftone screens with... Creating high spatial frequency halftone screens with...

2005-01-26

2009-10-13

Tran, Douglas Q (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003060

Reexamination Certificate

active

07602530

ABSTRACT:
A method of controlling a printer to print of an image, the printer having a predetermined marking material printed dot size, the method comprising the steps of rasterizing the image and defining halftone super pixels within the image, calculating the average density of the marking material within the super pixels, selecting a pattern for marking the pixels within the super pixels as a function of the printed dot size so as to expand the distribution of printed densities printable by the printer.

REFERENCES:
patent: 5956544 (1999-09-01), Stern et al.
patent: 6121986 (2000-09-01), Regelsberger et al.
patent: 6538677 (2003-03-01), Thompson et al.
patent: 7212315 (2007-05-01), Huang et al.
patent: 7286267 (2007-10-01), Chang
patent: 2003/0038952 (2003-02-01), Matsukubo et al.
patent: WO 01/89194 (2001-11-01), None
patent: WO 01/89194 (2001-11-01), None
patent: WO 02/10860 (2002-02-01), None
patent: WO 02/14957 (2002-02-01), None
Pg. 682, “Handbook of Print Media”, by Helmut Kipphan, published by Springer Verlag, ISBDN 3- 540-67326-1.

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