Thermal fixing apparatus
CA 2394755 A1 · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Nakata, Hirohiko; Natsuhara, Masuhiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermal fixing apparatus employing a ceramics heater and a tubular fixing film in which high speed fixing of 24 ppm or above is realized while enhancing durability of the fixing film and the fixing performance furthermore. The fixing face side surface of a ceramics heater (10) touching a fixing film (3) and at least the part of a heater support (12) adjacent to the fixing face side surface have a shape substantially identical to the naturally deformed shape of the fixing film (3) under a stationary state pressed by a press roller (4) at a specified nip width or under a traveling state. Alternatively they may have a planar shape at the nip part and on the inlet side and outlet side …
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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
- Filed October 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 2023.
- 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.