Liquid developer for color electrophotography and process for preparation of the same
CA 1087014 A · Owner: Konishiroku Photo Ind. Co. Ltd. · Inventors: Mohn, Eugen; Hermann, Hans-Jurg F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
LIQUID DEVELOPER FOR COLOR ELECTROPHOTOGRAPHY AND PROCESS FOR PREPARATION OF THE SAME ABSTRACT:, Liquid developer formulations adapted to colored toners suitable for trichromatic processes in electrophotography the, toners being lightfast organic dye pigments with substantially no photoconductivity which are mixed with a paraffinic material as a protective polymer (a dispersing liquid being used if the protective polymer is a solid) and suspended in an insulating hydrocarbon carrier medium together with a metal soap and a phenol derivative soluble in the carrier.
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 October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 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.