Photoplotting process for high-energy plotting of a computer-stored raster image on a photosensitive record carrier
CA 2276972 A1 · Owner: Pagan, Robin · Inventors: Pagan, Robin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A computer-stored raster image is plotted field-wise a manner analogous to the structure, of a chessboard by means of an exposure head which is continuously displaceable relative to a, light-sensitive record carrier and containing a light modulator. Through the sustained relative, movement the plotting would turn out to be undesirably blurred in the case of a longer exposure, period. This blurred effect is compensated by the displacement of a lens determining a focussing, scale and which is positioned between record carrier and exposure head. Prior to plotting of a new, field the displaced lens is retracted into a relative starting position for the new field so as to be, displaced …
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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
- Filed July 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2021.
- 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.