Plate lockup device position detecting apparatus for printing pr

Details Plate lockup device position detecting apparatus for printing pr Plate lockup device position detecting apparatus for printing pr

1993-02-05

1994-04-26

Burr, Edgar S.

Printing

Flexible-sheet-securing devices

101481, 101486, B41F 128

Patent

active

053056914

ABSTRACT:
A plate lockup device position detecting apparatus for a printing press includes first and second limit switches, and a series circuit. The first limit switch is provided in a gap of a plate cylinder and detects that a leading-side plate lockup device, a position of which is adjustable at least in one of vertical and horizontal directions of a plate, is restored to its origin position. The second limit switch is provided in the gap and detects that a trailing-side plate lockup device, a position of which is adjustable at least in one of the vertical and horizontal directions of the plate, is restored to its origin position. The series circuit detects that the plate lockup devices are restored to their origin positions from a logical product of the detection outputs from the first and second limit switches.

REFERENCES:
patent: 4437407 (1984-03-01), Wirz et al.
patent: 5168805 (1992-12-01), Kasanami et al.

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