Extending the dynamic range of single-bit, electrographic printe

Details Extending the dynamic range of single-bit, electrographic printe Extending the dynamic range of single-bit, electrographic printe

1997-10-27

1999-05-04

Moses, Richard

Electrophotography

Image formation

Development

358501, 358515, 358540, G03G 1501

Patent

active

058996044

ABSTRACT:
A computer (500) with a graphics program, an eight-plane raster image processor program, an eight-plane print-sending program, and a contrast-control program is connected to a single-bit, four-pass, electrographic printer (430). One or more of the primary colors is individually divided into multiple layers (100', 200 . . . ), with each layer having an independently selectable contrast setting (300--330). The printer (430') is now capable of printing images with an improved color gamut and dynamic range.

REFERENCES:
patent: 4631548 (1986-12-01), Milbrandt
patent: 4965613 (1990-10-01), Morris et al.
patent: 5172224 (1992-12-01), Collette et al.
patent: 5487020 (1996-01-01), Long
patent: 5668890 (1997-09-01), Winkelman
patent: 5793501 (1998-08-01), Murakami
patent: 5802216 (1998-09-01), Hayashi et al.

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