Method of imaging multiple binary bitmaps in a single pass

Details Method of imaging multiple binary bitmaps in a single pass Method of imaging multiple binary bitmaps in a single pass

2007-08-07

2007-08-07

Lamb, Twyler (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001700, C358S003010, C358S003210, C358S501000, C358S003240, C358S003260, C358S504000, C358S530000, C347S232000, C347S252000, C347S144000

Reexamination Certificate

active

10355849

ABSTRACT:
A method for printing multiple binary bitmaps (10) with an original density level (12a) and a color (18), wherein the color (18) is the same for all the multiple binary bitmaps (10), by combining “n” number of binary bitmaps into “p” bits of a multibit image forming a “p” bit image (20), identifying at least one overprint (24a), predicting an overprint density (26a) for each overprint, calculating a set of exposures (28) needed to image each overprint density (24a) and original density (12a), setting a maximum exposure level (30) that is a number greater than or equal to the maximum of the set of exposures (28), calculating pulse width modulation levels (30) for the set of exposures (28) using the set maximum exposure level (30), and printing the color (28) at the set maximum exposure level (30) using the pulse width modulation levels (30) for each level of the “p” bit image (20) in a single pass.

REFERENCES:
patent: 5091967 (1992-02-01), Ohsawa
patent: 5260799 (1993-11-01), Loce et al.
patent: 5268708 (1993-12-01), Harshbarger et al.
patent: 5309246 (1994-05-01), Barry et al.
patent: 6060208 (2000-05-01), Wang
patent: 6483607 (2002-11-01), Van de Capelle et al.
patent: 2004/0085553 (2004-05-01), Couwenhoven et al.

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