Ink-jet recording system and ink-jet recording method
CA 2001983 C · Owner: Canon Kabushiki Kaisha · Inventors: Sato, Hiroshi; Koike, Shoji; Nakatsugawa, Tomomi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An ink-jet recording system comprising applying droplets of water-based inks of a yellow ink a magenta ink, a cyan ink and a black ink onto a recording medium comprising a substrate paper having a surface layer comprising a pigment and a fibrous substance of the substrate paper which are present in a mixed state, and said recording medium having a Stockigt sizing degree ranging from 0 to 15 seconds to carry out recording, wherein;, at least an ink with a dye concentration ranging from 2.5 to 4.5 % by weight is used as said black ink; and, the recording is carried out in a maximum ink-adhering quantity ranging from 14 n?/mm2 to 20 n?/mm2 and in a maximum print-overlap number ranging from 2 …
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 November 1, 1989 and granted May 26, 1992. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 1, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2011.
- 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.