Duplicating stencil

Details Duplicating stencil Duplicating stencil

1981-10-26

1984-02-28

Kimlin, Edward C.

Stock material or miscellaneous articles

Sheet, web, or layer weakened to permit separation through...

4283113, 4283197, 430 49, 427143, 10112821, B32B 3100, D21F 1100, B41L 1106, B05D 506

Patent

active

044341989

ABSTRACT:
A duplicating stencil is produced by placing an electrostatically-produced image on a substrate in contact with an ink-impervious surface layer of a stencil blank, bending the image to the surface layer by the application of heat and/or pressure and stripping the substrate from the stencil blank to remove the surface layer in the image area. The surface layer may comprise a synthetic resin composition containing a finely dispersed pigment and is attached to the porous base tissue of the stencil blank by an adhesive. Bonding of the image to the surface layer and possibly also fixing of the image to the substrate in the same operation can be effected by means of infra-red heating.

REFERENCES:
patent: 2539755 (1951-01-01), Rogers et al.
patent: 2949848 (1960-08-01), Mott
patent: 2955531 (1960-10-01), Bogdonoff
patent: 3322594 (1967-05-01), Lucas et al.
patent: 3871899 (1975-03-01), Andersen
Chem. Abstr., vol. 72, #14026m, Antiadhesive Paper Coatings, Heukel et al.

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