Removable process unit with waste toners storage
CA 2125303 C · Owner: Xerox Corporation · Inventors: Thomas, Karlene R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A removable process unit for an electrostatographic printing machine has a photoreceptor, a frame having a longitudinal axis to movably mount the photoreceptor therein parallel to the longitudinal axis a cleaning sump extending parallel to the longitudinal axis and adjacent the photoreceptor, a toner transport to transport toner cleaned from the photoreceptor toward one end of the sump the toner sump having an, aperture at one end a cover for the frame at the one end thereof said, cover including a cavity with an aperture in communication with the aperture in the sump for storage of cleaned toner.
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 June 7, 1994 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 2016.
- 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.