Master retaining device for a printing machine

Details Master retaining device for a printing machine Master retaining device for a printing machine

1985-07-17

1986-05-13

Eickholt, E. H.

Printing

Printing members

Plate mountings

B41F 2700

Patent

active

045879001

ABSTRACT:
A printing machine includes a printing drum. A stencil master sheet retaining device for this printing machine includes: a magnet plate extending generally along a generator of the printing drum; a clamp plate, made of magnetically attractable material, which can be selectively positioned either to a position in which it lies against the magnet plate, or to a position in which it is removed away from the magnet plate; a removal strip which extends above the magnet plate generally between the magnet plate and the clamp plate; and a means for raising the removal strip away from the magnet plate, when the clamp plate is removed away from the magnet strip. This removal strip may be thin and elastic, and may be thus raised by being put into compression, optionally by its one end being fixed to the printing drum and its other end being moved towards that fixed end. In the case that the clamp plate is thus selectively positioned either against the magnet plate or away from the magnet plate by being pivoted around an axis generally parallel to the generator of the printing drum, then the removal strip, from its the fixed end, may be passed over the magnet plate and around the axis with its other end fixed to the clamp plate, the part of which generally at the axis of rotation thereof around which the removal strip is passed may be thickened.

REFERENCES:
patent: 3438324 (1969-04-01), Meade et al.
patent: 4505199 (1985-03-01), Hasegawa et al.
"Magnetic Paper-Gripping Concept", Xerox Disclosure Journal, vol. 3, No. 2, Mar./Apr. 1978, p. 107.

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