Multilayer photosensitive tonable element and process for image reproduction
CA 1089279 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Fan, Roxy N.; Cohen, Abraham B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved photosensitive element comprising in order from top to bottom, (1) a strippable cover sheet (2) a photoadherent layer, (3) a tonable layer and opt-, ionally, (4) a sheet support wherein after image-, wise exposure to actinic radiation either the exposed, or unexposed image areas of layer (2) have greater adhesion to layer (1) than layer (3) and the opposite image areas are nontonable and have greater adhesion to layer (3) than layer (1). The elements are useful for color proofing, reverse and duplicate images being produced.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted November 11, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 11, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.