Plate holding devices for offset duplicator

Details Plate holding devices for offset duplicator Plate holding devices for offset duplicator

1984-03-30

1985-03-05

Burr, Edgar S.

Printing

Flexible-sheet-securing devices

B41F 2712

Patent

active

045023883

ABSTRACT:
A plate cylinder adapted to support a printing plate is provided with a pair of circumferentially spaced shoulders and an opening between the shoulders. A tail clamp member is mounted on one shoulder for clamping a tail edge of the printing plate, and a clamp plate for clamping a leading edge of the printing plate is hinged to the other shoulder and biased to a clamping position by a spring arrangement. Inner and outer operating plates are secured to a rotary shaft extending through a side surface of the plate cylinder, and a rotatable operating handle is provided near the side surface of the cylinder to engage the outer operating plate, thus causing the inner operating plate to swing the clamp plate.

REFERENCES:
patent: 2813482 (1957-11-01), Mitchell et al.
patent: 2958274 (1960-11-01), Ritzerfeld et al.
patent: 3199452 (1965-08-01), Gericke
patent: 3719142 (1973-03-01), Abe
patent: 4359941 (1982-11-01), Fels
patent: 4391193 (1983-07-01), Ishii et al.

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