Image recording apparatus
CA 2038263 C · Owner: Okimura, Naomasa · Inventors: Okimura, Naomasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An image recording apparatus comprise, a heat roll for fusing a toner image transferred onto a sheet by heating; switching device for starting conduction of a heater installed within the heat roll; temperature control device for controlling a surface temperature of heat roll in a first predetermined temperature by controlling conduction of heater when the switching device has been turned on and for, controlling the surface temperature of the heat roll by increasing the surface temperature from a first temperature to a second predetermined temperature being different from the first temperature in response to a control signal; and control device for applying the control signal to the …
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 March 14, 1991 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 14, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 14, 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.