Apparatus for preventing removal of toner from transferred images
CA 1183197 A · Owner: Wang Laboratories, Inc. · Inventors: Rasekhi, Houshang; Nelson, Alfred M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, In a magnetographic printing system capable of transferring charged toner particles from a toner-carrying medium (e.g. magnetic tape) to a surface of a toner receiving medium (e.g. the front surface of a sheet of paper), apparatus is provided for preventing disturbance of the transferred particles on the surface of the paper when the toner-carrying medium is moved into contact with and away from said surface. The apparatus comprises an electrode arrangement disposed proximate to a rear surface of the paper opposite the transferred particles on the front surface. In response to an applied signal having a predetermined polarity (e.g. opposite to that of the transferred particles) an …
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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 February 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 26, 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
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.