Magnetic carrier used for developer
CA 1330869 C · Owner: Hisajima, Eio · Inventors: Oishi, Masao; Nagata, Kouichi; Hisajima, Eio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directed to a carrier to be used as a two-component developer, wherein a nuclide particle surface has a magnetic plated layer composed of an iron oxide. The carrier according to the present invention is to be used in an electrophotographic method an electrostatic recording method, and an electrostatic printing method, and also provides an excellent developer which is lightweight and has a long service life.
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 July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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.