Laser operated scanning and printing system
CA 1089922 A · Owner: The Mead Corporation · Inventors: Butler, John C.; Paul, Vincent J. Jr.; Cahill, Lysle D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A scanning and printing system scans and digitizes graphical information for recording on magnetic tape and also prints graphical information previously stored in digital form on a magnetic tape. Scanning and printing is accomplished by directing a laser beam through a pinhole in an aperture plate and thence through a set of optics which collimate, the beam and scan it across the surface of a graphic medium. For operation as a printer the laser beam is addressed by an accousto-optic modulator, which is positioned between the laser and the aperture plate. The accousto-optic modulator causes a shifting of the laser beam in accordance with digitized data trains representing positive and …
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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 18, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 18, 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.