Method of engraving an invisible joint within a gravure printing

Facsimile and static presentation processing – Facsimile – Recording apparatus

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101 1, 101DIG2, H04N 124

Patent

active

045009295

ABSTRACT:
A gravure printing cylinder is engraved with a pattern, such as a woodgrain pattern, by sensing and comparing the copy density at opposite ends of the pattern and then engraving the pattern with a correction for the unbalance in the copy density to produce a joint which is less visible to the human eye. A less visible joint is also formed by engraving the starting cells for the pattern at circumferentially spaced locations on the cylinder to produce either a non-linear interwoven joint and/or an irregular zig-zag joint.

REFERENCES:
patent: 2160951 (1939-06-01), Alice
patent: 3760098 (1973-09-01), de Voss et al.
patent: 3848083 (1974-11-01), Townsend
patent: 3904816 (1975-09-01), Taudt et al.
patent: 4232345 (1980-11-01), Zollman et al.

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