Method and apparatus for preparing color screens in a halftone i

Details Method and apparatus for preparing color screens in a halftone i Method and apparatus for preparing color screens in a halftone i

1995-07-18

1997-10-21

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

358533, 358536, H04N 140, H04N 152

Patent

active

056802226

ABSTRACT:
The dot patterns which may be used to reduce dot gain and moire effects in halftone images involve printing areas which have inwardly curved edges and variable elongation. Colored images having screens which use these patterns may be printed with the screens at 45.degree. relative angular separations. Alternatively the dot patterns may be regarded as reversed variable oval patterns with varying elongation of the generally oval shaped non-printing areas.

REFERENCES:
patent: 3725574 (1973-04-01), Gast
patent: 4084183 (1978-04-01), Keller et al.
patent: 4149183 (1979-04-01), Pellar et al.
patent: 4185304 (1980-01-01), Holladay
patent: 4196451 (1980-04-01), Pellar
patent: 4680645 (1987-07-01), Dispoto et al.
patent: 4894726 (1990-01-01), Steinhardt et al.
patent: 4916545 (1990-04-01), Granger
patent: 4918622 (1990-04-01), Granger et al.
patent: 5233441 (1993-08-01), Hamilton
patent: 5239391 (1993-08-01), Hamilton
K. Haller, Fogra Research Report 6.029 (1982). (Including excerpts translated into English of pp. 3, 8, 9, 14, 18, 19, 20, 25, 26 and 27).
Hell GMBH Dot Shapes, 6 pages (Pre-1991).
C. Eliezer, "Color Screening: How to Judge the Results", The Seybold Report on Publishing Systems, vol. 21, No. 11, pp. 3-11 (Feb. 29, 1992).
C. Eliezer, "Color Screening Technology: A Tutorial on the Basic Issues", The Seybold Report on Desktop Publishing, vol. 6, No. 2, pp. 3-25 (Oct., 1991).
Desktop to Press, No. 9, 13 pages (Feb., 1992).

Affiliated with

Also associated with

Rating

Method and apparatus for preparing color screens in a halftone i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for preparing color screens in a halftone i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for preparing color screens in a halftone i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1011184