Printing apparatus

Details Printing apparatus Printing apparatus

2006-04-14

2009-10-20

Thompson, James A (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S001120, C358S518000, C382S167000

Reexamination Certificate

active

07605950

ABSTRACT:
A printing apparatus for generating a test chart using a plurality of sheets of printing paper and correction data having high accuracy according to the test chart. Overlapping regions G are extracted from scanning data D1and D2of two test charts. Tendency in variation (inclination) of the density is obtained for one set of the scanning data in the overlapping regions G and such tendency in variation is reduced. The scanning data D1and D2are then combined together to eliminate the density difference, thereby obtaining a single set of combined scanning data D3. A correction data generation means updates a correction table based on density data of the scanning data D3.

REFERENCES:
patent: 7021737 (2006-04-01), Yamada
patent: 7069164 (2006-06-01), Viturro et al.
patent: 2005/0052488 (2005-03-01), Inoue
patent: 2001-142162 (2001-05-01), None
patent: 2005-101831 (2005-04-01), None

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