Generation of halftone overlays for combination with halftoned i

Details Generation of halftone overlays for combination with halftoned i Generation of halftone overlays for combination with halftoned i

1996-05-02

1998-02-03

Evans, Arthur G.

395135, G06K 1500

Patent

active

057153825

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.

REFERENCES:
patent: 5500700 (1996-03-01), Massarsky
patent: 5592236 (1997-01-01), Kosenbaum et al.

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