Process cartridge, image forming apparatus and image forming system
CA 2121981 C · Owner: Matsuda, Kenji · Inventors: Kawaguchi, Hideshi; Miyake, Hiroaki; Tenpaku, Chitose
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process cartridge detachably mountable relative to a main assembly of an image forming apparatus includes an image bearing member; a process device actable on the image bearing member; an elastic device; a receptor for receiving a force against an elastic force of the elastic means in contact with the main assembly when the process cartridge is mounted to the main assembly of the image forming apparatus; wherein when the process cartridge is to be taken out of the main assembly of the image forming apparatus the elastic device displaces the process cartridge by the elastic force thereof.
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 April 22, 1994 and granted January 18, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2016.
- 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.