Image forming machine having a verifiably openable sump shutter assembly
CA 2203452 C · Owner: Parra-Sanchez, Alejandro · Inventors: Villalobos-Garcia, Luis M.; Pliego-Escalona, Jorge N.; Parra-Sanchez, Alejandro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A residual toner collecting system is provided in an electrostatographic reproduction machine. The collecting system includes units within the reproduction machine for generating waste or residual toner; members within the machine defining an elongate loading aperture for a removable cartridge and a fixed position interference member adjacent the loading aperture. The collecting system also includes an elongate cartridge unit for removably loading into the loading aperture, and a residual toner collecting sump assembly connected to an externally directed end of the cartridge unit for receiving residual toner from the residual toner generating units. The collecting sump assembly includes a …
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 April 23, 1997 and granted December 12, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 23, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 23, 2019.
- 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.