Banding and ink-bleeding reduction in cluster dither by screen d

Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

358534, G06F 1500

Patent

active

057969299

ABSTRACT:
A controller for an ink-jet printer (26) half-tones three color-component values in clustered-dot dither operations (80, 82, and 84) that employ respective dither arrays whose cluster centers are displaced from each other. Additionally, a half-toning operation (86) is performed on a fine-resolution black value obtained from the color-component values in an undercolor-removal operation (59) in which the resultant black value is less, throughout most of the component-value range, than the minimum of the color-component values from which the black value is derived. The banding effects that would otherwise result from ink bleeding are thereby greatly reduced. The banding effects can be further reduced by performing black-component half-toning in a non-cluster-dot-dither operation, without detracting significantly from the intended clustered-dot dither effect.

REFERENCES:
patent: 4920501 (1990-04-01), Sullivan et al.
patent: 5045931 (1991-09-01), Sakamoto
patent: 5377024 (1994-12-01), Dillinger
patent: 5394252 (1995-02-01), Holladay et al.
patent: 5428377 (1995-06-01), Stoffel et al.
patent: 5469266 (1995-11-01), Usami et al.
patent: 5493323 (1996-02-01), Harrington
patent: 5557709 (1996-09-01), Shu
patent: 5594839 (1997-01-01), Shu
patent: 5633729 (1997-05-01), Smith et al.
patent: 5684932 (1997-11-01), Shu
patent: 5701366 (1997-12-01), Ostromoukhov et al.
patent: 5715073 (1998-02-01), Miller

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Banding and ink-bleeding reduction in cluster dither by screen d does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Banding and ink-bleeding reduction in cluster dither by screen d, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Banding and ink-bleeding reduction in cluster dither by screen d will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1123862

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.