Dual-head duplicator with alternate simplexing capability

Details Dual-head duplicator with alternate simplexing capability Dual-head duplicator with alternate simplexing capability

1977-10-21

1982-05-04

Burr, Edgar S.

Printing

Planographic

Rotary machines

101184, 101231, B41F 900

Patent

active

043276415

ABSTRACT:
A tandem dual-head lithographic duplicator is equipped for operation in alternative modes, i.e., either for duplexing by printing on opposite faces of the copy sheets in sequence, or for simplexing. In the simplexing mode the printing of the copy sheets is carried out on one head simultaneously with the cleanup and preparation operations on the other head, with a sequence of printing jobs being performed alternately on one printing head and then on the other while, in each case, the non-printing head is being prepared. Accordingly, substantially continuous simplexing operation can be achieved except in the case of very short printing runs.

REFERENCES:
patent: 3461798 (1969-08-01), Bulk
patent: 3490367 (1970-01-01), Kaneko
patent: 3785287 (1974-01-01), Dahlgren
patent: 3987722 (1976-10-01), Goodwin

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