Facsimile and static presentation processing – Static presentation processing – Dot matrix array
Reexamination Certificate
2008-05-28
2010-10-05
Garcia, Gabriel I (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Dot matrix array
C358S001400
Reexamination Certificate
active
07808674
ABSTRACT:
Techniques are disclosed for stitching images printed by a multi-head printer in a manner that is relatively insensitive to misregistration of the image segments. When a pair of overlapping print heads print a pair of adjacent image segments which meet in a stitching region, printing at each location in the stitching region is accomplished by both print heads with a weighting that depends on the location being printed within the stitching region. In one embodiment, for example, the output of each print head is weighted by a linear function of horizontal pixel position. Techniques are also disclosed for selecting screening patterns for use when stitching is performed with variable-dot printers. Such screening patterns are selected to minimize variations in density that may arise as the result of cross-web and/or down-web misregistration.
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Saquib Suhail S.
Vetterling William T.
Ewing James F.
Foley & Lardner LLP
Garcia Gabriel I
Morency Michel
Zink Imaging, Inc.
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