Rotary stencil printer with printing drum of net cylindrical bod

Details Rotary stencil printer with printing drum of net cylindrical bod Rotary stencil printer with printing drum of net cylindrical bod

1990-12-13

1991-10-29

Burr, Edgar S.

Printing

Stenciling

Rotary machines

1011271, B41L 1300

Patent

active

050605674

ABSTRACT:
In a rotary stencil printer having a printing drum made of two annular members connected by a transverse bar member and a net member of woven, non-woven or knitted fibers of a rectangular shape in development wound around the two annular members with opposite side edge belt portions thereof being slidably laid on outer circumferential surfaces of the annular members so as to form a porous cylindrical body for mounting a stencil sheet as wound therearound, a back press roller of a diameter common with the printing drum disposed to face an outside surface of the printing drum so as to define a print sheet nip region with the printing drum therebetween and having a groove in an outside surface portion thereof adapted to receive the transverse bar member therein in meeting therewith in synchronized rotations of the printing drum and the back press roller in opposite directions, and an inner press roller disposed in an inside space of the printing drum so as to contact with an inside surface of the porous cylindrical body along a generatrix thereof, the transverse bar member is spaced radially outwardly from a cylindrical outer configuration of the porous cylindrical body at a portion thereof facing the porous cylindrical body so that the inner press roller can traverse a portion facing the transverse bar member with no collision therewith.

REFERENCES:
patent: 2906201 (1959-09-01), Blair
patent: 3232224 (1966-02-01), Kramer
patent: 4856428 (1989-08-01), Green et al.
patent: 4911069 (1990-03-01), Hayama et al.

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