Stencil printing drum with friction reducing means

Details Stencil printing drum with friction reducing means Stencil printing drum with friction reducing means

1995-07-27

1997-08-26

Funk, Stephen R.

Printing

Stenciling

Rotary machines

1011281, B41L 1310

Patent

active

056601077

ABSTRACT:
Disclosed is a printing drum of a stencil printing machine, which includes a base member having two annular members disposed at a specific space on a common central axis and a transverse bar connecting the two annular members; a flexible multi-porous sheet wrapped into a cylindrical shape around the outer peripheral surface of the base member, and around which a stencil sheet is wrapped; a stencil clamping device provided on the transverse bar of the base member for selectively clamping one end part of the stencil sheet; an inner pressing device provided on the back side of the flexible multi-porous sheet for supplying ink outwardly from the inside of the flexible multi-porous sheet, and for radially outwardly deforming the flexible multi-porous sheet by pushing outwardly the inner peripheral surface of the flexible multi-porous sheet when the base member and flexible multi-porous sheet assembly rotates on the central axis stated above; and a frictional resistance reducing device for reducing a circumferential frictional resistance which is generated between the base member and the flexible multi-porous sheet.

REFERENCES:
patent: 3941054 (1976-03-01), Springer
patent: 4911069 (1990-03-01), Hayama et al.
patent: 5060567 (1991-10-01), Hayama et al.
patent: 5090312 (1992-02-01), Ohinata
patent: 5247882 (1993-09-01), Zook et al.

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