Non-repeat doctor blade drive

Printing – Intaglio – Wipers

Patent

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Details

101157, 91306, B41F 910

Patent

active

043984630

ABSTRACT:
A drive for the doctor blade of a gravure type printing press oscillates the doctor blade in a non-repeating motion. A doctor slide is coupled to the doctor blade, and oscillated on the frame by a first piston-cylinder unit. A pneumatic valve slide is driven back and forth on the frame by a second piston cylinder unit, between a first pair of end stops mounted on the doctor slide and between a second pair of end stops mounted on the frame. Upon engagement of the end stops on the doctor slide, the valve slide provides a pressure signal to reverse the direction of motion of the doctor slide. Upon engagement of the end stops on the frame, the valve slide provides a pressure signal to reverse its own direction of motion on the frame.

REFERENCES:
patent: 2447090 (1948-08-01), Pollock
patent: 2955460 (1960-10-01), Stevens et al.
patent: 3009446 (1961-11-01), Sunnen
patent: 3087184 (1963-04-01), Ljungquist
patent: 3620126 (1971-11-01), Fuhrimann
patent: 3771421 (1973-11-01), Schaffer
patent: 3782246 (1974-01-01), Hilbrands
patent: 3983812 (1976-10-01), Schramm
Pamphlet Entitled, GRI "The Latest Generation of Rotogravure Presses for Publication Printing" by Dr.-Ing. Carlo Cerutti, 1976.
Pamphlet Entitled, GRI "The Future of Gravure According to a Press Manufacturer" by Dr.-Ing. Carlo Cerutti, 1977.
Cerruti Paper by Paul Cappa Entitled, "Cerruti for the U.S. Market", p. 90, 1980.
Page 6 from a 1969 Motter Press Specification.
Pages from an Albert-Frankenthal Brochure Entitled, "Gravure Printing Unit TR5 S".
Albert-Frankenthal Advertisement entitled "Albert has all the Features . . . ".
Paper Presented at 1979 European Rotogravure Assn. Meeting "TR5 S and TR6 S . . . " by Gebhard.

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