Method of and apparatus for producing a unit pattern on a printi

Details Method of and apparatus for producing a unit pattern on a printi Method of and apparatus for producing a unit pattern on a printi

1993-09-14

1996-01-02

Reinhart, Mark J.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358447, H04N 121

Patent

active

054813662

ABSTRACT:
A method of producing a unit pattern on a printing cylinder for printing an endless pattern including the steps of: storing pixel signals expressing pixels of an original picture in memory means; distinguishing the pixel signals into first pixel signals which approximate to respective their corresponding pixel signals distant therefrom by a repetition length in a primary scanning direction and second pixel signals which are much different from the same; producing a cutting line extending across the original picture in a secondary scanning direction, said cutting line passing through the pixels of the original picture expressed by the first pixel signals as much as possible; extracting pattern pixel signals which exist between the cutting line and an imaginary line distant therefrom by the repetition length from the pixel signals; smoothing the pattern pixel signals close to the cutting line and the imaginary line; and recording the unit pattern on the printing cylinder on the basis of the smoothed pattern pixel signals.

REFERENCES:
patent: 4013829 (1977-03-01), Baar et al.
patent: 5177795 (1993-05-01), Tahioko et al.
patent: 5404233 (1995-04-01), Nagata et al.
Patent Abstracts of Japan, vol. 12, No. 343 (M-741) 14 Sep. 1988 & JP-A-63104839 (Dainippon Printing) 10 May 1988, *Abstract*.
European Search Report for European Patent Appln. No. 93114684.9 dated Dec. 21, 1993.

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