Method and apparatus for offset printing employing fluoroelastom

Details Method and apparatus for offset printing employing fluoroelastom Method and apparatus for offset printing employing fluoroelastom

1977-04-08

1979-12-18

Eickholt, E. H.

Printing

Planographic

Processes of lithographic printing

101457, 101465, B41M 100

Patent

active

041788508

ABSTRACT:
An offset printing system and method wherein a plate cylinder, a blanket cylinder and ink applying means are arranged in cooperative relationship. The ink applying means applies ink to a plate removably carried by the plate cylinder and the ink applied to the plate is transferred as an image to an image receiving surface of a blanket secured to the blanket cylinder and having an image receiving surface comprising a solid fluoroelastomer. In the disclosed embodiment, the fluoroelastomer is a copolymer of vinylidene fluoride and hexafluoropropylene of a grade which remains solid and deforms elastically at temperatures in excess of 150.degree. F. The fluoroelastomer has a specific gravity between about 1.82 and 1.86 and the ink applying means may also be provided with a surface comprising a fluoroelastomer which remains solid and deforms elastically at temperatures in excess of 150.degree. F.

REFERENCES:
patent: 2082319 (1937-01-01), Barber
patent: 2894452 (1959-07-01), Trisler
patent: 3049996 (1962-08-01), Downie
patent: 3060853 (1962-10-01), Remer
patent: 3203346 (1965-08-01), Norton et al.
patent: 3554836 (1971-01-01), Steindorf
patent: 3690253 (1972-09-01), Dreyer
patent: 3802952 (1974-04-01), Gurin et al.
patent: 3859090 (1975-01-01), Yoerger et al.
patent: 3901700 (1975-08-01), Yoerger et al.
patent: 3902415 (1975-09-01), Fischer
"The Technology of Litho Blankets", Sutton, The British Ink Maker, Feb. 1971 pp. 74, 76, 78, 80.

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