Amorphous silicon photoconductive member including an intermediate composite barrier layer
CA 1180220 A · Owner: Canon Kabushiki Kaisha · Inventors: Kanbe, Junichiro; Shirai, Shigeru; Fukuda, Tadaji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photoconductive member comprising a support for a photoconductive member, a photoconductive layer constituted of an amorphous material comprising silicon atom as a matrix and a barrier layer between said support and said photoconductive layer, said barrier layer having a double-layer structure and comprising a first barrier layer constituted of an amorphous material comprising silicon atom as a matrix and containing impurities which control the property of conductivity and a second barrier layer constituted of an electrically insulating material different from said amorphous material constituting said first barrier layer. The device has excellent electrical optical and photoconductive …
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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 January 2, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 2, 2002.
- 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
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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.