Substrate for composite printing and relief plate

Details Substrate for composite printing and relief plate Substrate for composite printing and relief plate

1976-10-27

1977-11-29

Coughenour, Clyde I.

Printing

Printing members

Blanks and processes

101467, 346 76L, 428483, 428307, B41N 112

Patent

active

040600327

ABSTRACT:
A composite structure for making printing plates and other surfaces in relief is improved by reducing the density of a polymer substrate thereby increasing the amount of material removed per unit of time by a given total amount of energy. The density of the polymer substrate is reduced by making it cellular or poriferous using expandable micro capsules made of thermoplastic shell and a nucleus of a liquified blowing agent.

REFERENCES:
patent: 3032414 (1962-05-01), James et al.
patent: 3101668 (1963-08-01), Leeds
patent: 3207621 (1965-09-01), Newman et al.
patent: 3470059 (1969-09-01), Jonnes
patent: 3560994 (1971-02-01), Wolff et al.
patent: 3615972 (1971-10-01), Morehouse et al.
patent: 3619335 (1971-11-01), Bryan
patent: 3644014 (1972-02-01), Hirshberg
patent: 3734768 (1973-05-01), Smith
patent: 3742853 (1973-07-01), Landsman
patent: 3832948 (1974-09-01), Barker
IBM Tech. Disc. Bull., vol. 14, No. 8, Jan. 1972, p. 2358, Greenblott.

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