Method of making an intaglio halftone gravure printing plate

Details Method of making an intaglio halftone gravure printing plate Method of making an intaglio halftone gravure printing plate

1976-07-12

1977-11-22

Van Horn, Charles E.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

96 363, 96 37, 96 38, 96 45, 101170, 156905, G03F 702

Patent

active

040594815

ABSTRACT:
An intaglio halftone gravure printing plate is made by contact-printing onto a sensitized carbon tissue a contact screen including a grid-like arrangement of minute dark dots each having the shape of a square rounded off at the four corners with the peripheries vignetted and having densities tapering from a maximum value of 3.0 at the center to a minimum value of 0.1 at the periphery, contact-printing a halftone positive onto the carbon tissue, contact-printing a light diffusion sheet and the halftone positive combinedly onto the carbon tissue, and developing the treated carbon tissue on a printing plate for subsequent etching of the cylinder.

REFERENCES:
patent: 2060640 (1936-11-01), Shaw
patent: 2480400 (1949-08-01), Dultgen
patent: 2731346 (1956-01-01), Gresham
patent: 3325285 (1967-06-01), Harris et al.
patent: 3600244 (1971-08-01), Wegener
patent: 3650957 (1972-03-01), Shipley et al.
patent: 3689417 (1971-09-01), Oikawa et al.
patent: 3752073 (1973-08-01), Lorber

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