Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2005-07-29
2009-06-09
Coles, Edward L (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S001900, C358S003200, C358S003260, C358S533000, C358S536000
Reexamination Certificate
active
07545537
ABSTRACT:
A multiple beam printer system having N laser beams receives print job information from a print host. A rendering application uses a threshold array to generate halftone image data from the print job. The threshold array is defined based on a spot function. The defined screen is non-orthogonal and includes Y pels in a direction that is perpendicular to a scanning direction of the laser beams where Y is an integer multiple of N. A distance between screen dots in pels is preferably equal to an integer multiple of N. The screen dot may be defined by a supercell encompassing two screen dots and having an odd number of pels in a direction that is parallel to the scanning direction. The spot function may include a snap feature that snaps a screen dot to the nearest printer grid pel. The spot function may include scaling to compensate for the distortion of the non-orthogonal screen dot.
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“PCT/EP2006/064651 International Search Report”, (Nov. 6, 2006), 3 pages.
Li Hong
Stanich Mikel John
Thompson Gerhard Robert
Wu Chai Wah
Blakely , Sokoloff, Taylor & Zafman LLP
Coles Edward L
InfoPrint Solutions Company LLC
Singh Satwant K
LandOfFree
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