Latent image-multiple copy process

Details Latent image-multiple copy process Latent image-multiple copy process

1980-03-03

1981-12-08

Coughenour, Clyde I.

Printing

Planographic

Lithographic plate making, and processes of making or using...

101119, 101129, 1011325, 283 6, 428199, B41M 504

Patent

active

043041833

ABSTRACT:
A latent image-multiple copy process wherein use is made of a stencil in which stencil openings are formed to correspond to the latent image and base sheets in combination therewith, containing an invisible, soluble, color forming component, whereby when the color forming component is depleted from the base sheet in the area underlying the stencil openings, the base sheet can be replaced for the production of additional copies without the need to provide for a new stencil.

REFERENCES:
patent: 1579439 (1926-04-01), Daus
patent: 1939089 (1933-12-01), Tauschek
patent: 2086011 (1937-07-01), Whitmore
patent: 2180135 (1939-11-01), Bartholomew
patent: 2798427 (1957-07-01), Klimkowski
patent: 3181462 (1965-05-01), Newman
patent: 3593659 (1971-07-01), Brackett
patent: 3690252 (1972-09-01), Sokolov
patent: 3874895 (1975-04-01), Hayashi
patent: 4051283 (1977-09-01), Thomas
patent: 4097637 (1978-06-01), Loria et al.

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