Unit for tone-processing image data using screen pattern...

Electrophotography – Image formation – Development

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07603064

ABSTRACT:
The electrophotographic image recording apparatus includes a photoconductive image bearing member, a charging unit, an exposure unit, developing means, a transferring unit suited to superimpose and transfer the plural kinds of toner images obtained by the developing means, and a processing unit adapted to execute halftone processing image data to be sent to the exposure unit, wherein the plural kinds of toners include two kinds of toners of the same hue and differing in density from each other, and the processing unit tone-processes by the use of a screen pattern having different screen angles for the respective toners. In an electrophotographic image recording apparatus for forming an image by the use of a plurality of colorants including two kinds of colorants of substantially the same hue and differing in density from each other, and an image processing apparatus, a higher quality of image is achieved. Tone processing is effected by the use of a screen pattern having different screen angles for the respective toners.

REFERENCES:
patent: 4108654 (1978-08-01), Goren et al.
patent: 5644403 (1997-07-01), Watanabe
patent: 6327450 (2001-12-01), Ito
patent: 6498910 (2002-12-01), Haneda
patent: 6996358 (2006-02-01), Ayaki et al.
patent: 2004/0013958 (2004-01-01), Ayaki et al.
patent: 2005/0019681 (2005-01-01), Ito
patent: 1 376 255 (2004-01-01), None
patent: 1 500 989 (2005-01-01), None
patent: 5-035038 (1993-02-01), None
patent: 8-171252 (1996-07-01), None
patent: 2000-231279 (2000-08-01), None
patent: 2000-305339 (2000-11-01), None
patent: 2000-347476 (2000-12-01), None
patent: 2001-290319 (2001-10-01), None
Translation of an Official Action dated May 9, 2008 in CN 2005800300749.
Translation of the abstract of the Korean Patent application laid-open No. 2000-31620.

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

Unit for tone-processing image data using screen pattern... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Unit for tone-processing image data using screen pattern..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Unit for tone-processing image data using screen pattern... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4101905

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