Dot matrix copying apparatus
CA 1103732 A · Owner: The Mead Corporation · Inventors: Gamblin, Rodger L.; Howard, Robert C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Docket 6382, DOT MATRIX COPYING APPARATUS Abstract of the Disclosure, A dot matrix copying device includes optical rectification apparatus comprising storage means for storing image information in dot matrix form and means for transferring the stored information to a dot matrix print head. The image information is derived by simultaneously scanning an original document and an optical grating positioned adjacent thereto and directing the scanned scene toward an array of photosensing elements, one of which is positioned to view the optical grating. The optical data so derived is stored in the storage means under timing control of the photosensing element which views the optical grating. -1-
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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 June 23, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 23, 1998.
- 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.