Rotary printing machine with web tear clearing system

Details Rotary printing machine with web tear clearing system Rotary printing machine with web tear clearing system

1983-11-17

1985-06-18

Coughenour, Clyde I.

Printing

Rolling contact machines

Rotary

101247, 101351, 101352, B41F 504, B41F 1328, B41F 1332, B41F 1334

Patent

active

045235228

ABSTRACT:
To prevent introduction of paper scraps or torn paper into the inker of a web printing machine, a web paper tear sensor (17, 18) controls a hydraulic or pneumatic cylinder-piston unit (25) which severs engagement between an ink supply roller (13) and an ink application roller (12) while maintaining contact of the ink application roller with the plate cylinder (4) of the printing machine; the greater quantity of ink on the ink application roller will cause paper to adhere to the ink application roller, and thus wrap itself about that roller, severance of contact with the ink supply roller (13) preventing introduction of torn paper into the inker.

REFERENCES:
patent: 3095810 (1963-07-01), Harris
patent: 3507215 (1970-04-01), Schuhmann
patent: 3638568 (1972-02-01), Granger
patent: 3789757 (1974-02-01), Motter
patent: 4240346 (1980-12-01), Landis
patent: 4290360 (1981-09-01), Fischer
patent: 4385559 (1983-05-01), Jarach

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