Ink jet recording means and packaging therefor
CA 2085552 C · Owner: Iwasaki, Osamu · Inventors: Iwasaki, Osamu; Gotoh, Fumihiro; Takahashi, Kiichiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is to improve the storage performance of the recording head in the prolonged storage such as in the course of distribution, and to eliminate limitation and to increase freedom in the handling in the distribution of the recording head. There is provided ink jet recording means in which a recording head unit and an ink tank unit, containing ink for supply to the recording head unit are integrally combined at the use, but the ink tank unit is separately replaceable when required, wherein the recording head unit contains, prior to the initial use, ink for storage which is different from the ink for recording. This configuration improves the storage performance of the …
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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 December 16, 1992 and granted December 9, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 16, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 16, 2014.
- 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.