Electrophotographic copying apparatus
CA 1085446 A · Owner: Minolta Camera Kabushiki Kaisha · Inventors: Imaizumi, Koji; Hikosaka, Takashi; Yamamoto, Shunji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Electrophotographic Copying Apparatus ABSTRACT OF THE DISCLOSURE, An electrophotographic copying apparatus which is provided with an improved device for preventing disturbance or disorder of transferred images due to deterioration of a photoreceptor surface by harmful gases present within or around a corona charger, which preventing device includes air ducts for evacuating harmful gases out of the apparatus and a heating unit for maintaining the photoreceptor surface in a dry state. - 1 -
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
- Granted September 9, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 9, 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.