Screening method for a rendering device having restricted densit

Details Screening method for a rendering device having restricted densit Screening method for a rendering device having restricted densit

1994-07-06

1997-08-05

Vu, Kim

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358455, 358458, 382272, H04N 140

Patent

active

056548087

ABSTRACT:
A method is described for the rendering of an image on a carrier by a rendering system having a restricted density resolution. A classic screening method for a binary rendering technique is extrapolated to a plurality of energy levels that belong to three classes: non-marking, non-stable and marking stable energy levels. For each class, specific rules must be respected, in order to obtain predictable results without density discontinuities on the carrier. The methods make full use of the spatial and density resolution of the rendering system in areas of high density and increase the reproducibility of low densities by giving up some spatial resolution in the lower density regions.

REFERENCES:
patent: 4578714 (1986-03-01), Sugiura et al.
patent: 5155599 (1992-10-01), Delabastita

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