Resolution transforming raster-based imaging system
CA 2095018 C · Owner: Hewlett-Packard Company · Inventors: Frazier, Allen L.; Pierson, James S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A conventional display device, such as a marking engine for a laser printer or digital copier having a nominal, resolution (where the energy source for the display device can be selectively activated) and a predetermined threshold level for producing output image dots, (see Fig. 5) is modified to, a different (higher or lower) resolution or modified to produce output dots along axes (7, 9 and 11 in Fig. 10) different from the axes (3,5) of the display device (such as for producing halftone screens on angles) by using different, resolution input data and by selectively activating the, energy source to produce overlap areas (see Fig. 10) that exceed the device threshold and thereby produce …
Read the whole patent
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 November 6, 1991 and granted April 20, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 6, 2013.
- 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.