Photographic method and apparatus for forming images on plain paper
CA 1264425 C · Owner: Wright, Richard F. · Inventors: Head, Donald L.; Wright, Richard F.; Saccocio, Edward J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Images are formed on plain paper using imaging sheets having a coating containing a chromogenic material and a photosensitive composition with at least the photosensitive composition encapsulated in a layer of rupturable microcapsules as an internal phase by a process which comprises image-wise exposing the imaging sheet to actinic radiation placing the imaging sheet in contact with a sheet of plain paper with the layer of microcapsules adjacent the sheet of plain paper, subjecting the microcapsules to a uniform rupturing force, the steps of subjecting the layer of microcapsules to the rupturing force and placing the imaging sheet in contact with the sheet of plain paper being conducted …
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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 January 16, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 2007.
- 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.