Generation of halftone overlays for combination with halftoned images
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United States of America Patent
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Feb 3, 1998
Grant Date -
N/A
app pub date -
May 2, 1996
filing date -
May 5, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The generation of personalised documents, or documents including variable data, may require one or more varying overlay images to be printed on top of a background image. In order to avoid the generation of the background image for each document separately, a method is provided to store the background image permanently and to merge it with the overlay images just before printing. A transparency notion may be introduced to avoid masking of the background image by horizontally oriented rectangular overlays. The overlay image and the background image may be generated by a process of multilevel halftoning, suitable for printing by an electrophotographic printing device, using colored toner.
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Cited Art Landscape
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