Automatic recirculating duplicator

Printing – Antismut device – Anti-offset material application

Patent

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Details

101 90, 101240, 271 31, B41M 500, B41L 2106, B41F 1364

Patent

active

041810783

ABSTRACT:
There is provided an improved automatic recirculating duplicator adapted for duplicating from a master or plate selectively onto one or both sides of paper sheets. It is characterized by a single printing couple. Sheets are fed from a paper table to a printing nip between a printing cylinder and an impression cylinder for printing on the first side and, through operation of a controlled gripping and stripping apparatus, the sheets are turned about the impression cylinder for collection with the printed sides down on a paper tray. The paper tray is then shifted to the feeding location normally occupied by the paper table, and the gripping and stripping apparatus is reset for feeding the sheets, now printed on both sides, directly to an exterior receiver. When it is desired to print sheets on one side only, the mechanism is set for feeding sheets from the paper table, but manual controls permit resetting the gripping and stripping mechanism to feed sheets directly to the receiver instead of inverting them and sending them to the paper tray.

REFERENCES:
patent: 3034427 (1962-05-01), Ostwald
patent: 3615129 (1971-10-01), Drawe et al.
patent: 3627312 (1971-12-01), Fackler et al.
patent: 3987722 (1976-10-01), Goodwin
patent: 3989236 (1976-11-01), Komori et al.
patent: 3999852 (1976-12-01), Katayama et al.
patent: 4080060 (1978-03-01), Nothmann

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