Printer having differential filtering smear correction

Details Printer having differential filtering smear correction Printer having differential filtering smear correction

2006-07-07

2010-12-07

Poon, King Y (Department: 2625)

Facsimile and static presentation processing

Static presentation processing

Attribute control

C358S003270, C347S020000, C347S027000, C347S032000

Reexamination Certificate

active

07847979

ABSTRACT:
In a method and printing apparatus, a receiver is moved in a travel direction relative to a print engine. The print engine has a predetermined profile of smear in the travel direction at a plurality of sites on the receiver. Each site corresponds to a respective one of the pixels. A digital image to be printed with the print engine is received and digitally filtered based on the profile to provide a filtered image. The filtering is localized, non-symmetrical, and at least partially compensatory of the smear. As the receiver is moved, the filtered image is printed on the receiver, the printing being modulated in accordance with the filtered image.

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