Grayscale printing system

Details Grayscale printing system Grayscale printing system

1994-12-16

1997-07-15

Fuller, Benjamin R.

Incremental printing of symbolic information

Ink jet

Controller

347 43, 358298, B41J 2205, B41J 221

Patent

active

056488017

ABSTRACT:
A system is provided for obtaining enhanced quality grayscale printing using standard printer architecture. An image to be printed is scanned to produce several bit maps for image pixels having different optical intensities. The different bit maps are handled by a standard print engine separately, in the same manner as multicolor bit maps would be handled. The image is then printed using a print head assembly having separate print heads for grayscale printing using different optical intensities. Thus, a printed image having enhanced resolution and quality, because of the optical intensity discrimination, is produced using a printer architecture which is the same as a standard multicolor printer architecture except for the front end, which scans for optical intensity, and the print head assembly, which has different print heads designed to produce different optical intensities. The print heads use either different ink dot sizes, inks having different pigment concentrations, or other suitable techniques for varying the optical intensity.

REFERENCES:
patent: 3922484 (1975-11-01), Keller
patent: 4365275 (1982-12-01), Berman et al.
patent: 4389712 (1983-06-01), Frattarola et al.
patent: 4412225 (1983-10-01), Yoshida et al.
patent: 4412226 (1983-10-01), Yoshida
patent: 4491875 (1985-01-01), Kawamura
patent: 4547812 (1985-10-01), Waller et al.
patent: 4673951 (1987-06-01), Mutoh et al.
patent: 4686538 (1987-08-01), Kouzato
patent: 4701811 (1987-10-01), Moriguchi et al.
patent: 4714964 (1987-12-01), Sasaki
patent: 4727430 (1988-02-01), Miwa
patent: 4746935 (1988-05-01), Allen
patent: 4771295 (1988-09-01), Baker et al.
patent: 4805033 (1989-02-01), Nishikawa
patent: 4860026 (1989-08-01), Matsumoto et al.
patent: 4884080 (1989-11-01), Hirahara et al.
patent: 4985779 (1991-01-01), Gall
patent: 5014129 (1991-05-01), Imanishi
patent: 5073966 (1991-12-01), Sato
patent: 5075698 (1991-12-01), Aoki et al.
patent: 5075780 (1991-12-01), Shibahara
patent: 5111302 (1992-05-01), Chan et al.
patent: 5187594 (1993-02-01), Deutsch et al.
patent: 5204753 (1993-04-01), Tai
patent: 5258849 (1993-11-01), Tai et al.
patent: 5260807 (1993-11-01), Tai
M. Takahashi, T. Ushioda, R. Uematsu, N. Tagawa, H. Fukuchi, Full-Color Ink-Jet Printer Using Multilevel Ink, SID 85 Digest., 1985 pp. 329-331.
W. Lama, S. Feth, and R. Loce, Hybrid (Gray Pixel) Halftone Printing, SPSE-The Society for Imaging Science and Technology. SPSE 41st Conf. May 1988, pp. 130-135.

Affiliated with

Also associated with

Rating

Grayscale printing system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Grayscale printing system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grayscale printing system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1495277