Liquid toner imaging system
CA 2087968 C · Owner: Hewlett-Packard Indigo B.V. · Inventors: Landa, Benzion
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Multi-color liquid toner electrophotographic apparatus including an image bearing surface (10) apparatus (16) for developing an image on the image bearing surface using a plurality of liquid toners of different colors and apparatus for transferring a developed image from the image bearing (10) surface to a substrate (25) wherein the apparatus for developing (16) includes a plurality of colored liquid toner reservoir volumes (40, 42, 44, 46) each for a different color, which are separated by a barrier (100) which prevents pigmented particle communication therebetween and permits communication of carrier liquid therebetween.
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
- Filed July 23, 1990 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2012.
- 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.