Method for graving printing forms

Details Method for graving printing forms Method for graving printing forms

1981-03-23

1990-12-04

Orsino, Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358461, 358474, H04F 146

Patent

active

049757849

ABSTRACT:
A method for graving printing forms using rastered masters by means of a scanning system which can be adjusted in focus. The signal supplied by the scanner after processing in an electronic computer controls a graving system so as to scan rastered originals. The scanning system is placed out of focus and the loss of image information caused by placing it out-of-focus is compensated by means of an electronic out-of-focus mask.

REFERENCES:
patent: 2543393 (1951-02-01), Wheldon
patent: 2691696 (1954-10-01), Yule
patent: 2962548 (1960-11-01), Taudt
patent: 2972012 (1961-02-01), Farber
patent: 3024111 (1962-03-01), Sportelli
patent: 3582549 (1971-06-01), Taudt et al.
patent: 4065788 (1977-12-01), Meier et al.
patent: 4279003 (1981-07-01), Schulz

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