Ribbon cartridge with ink wicking mechanism
CA 2080918 A1 · Owner: Cheng, Wei T. · Inventors: Cheng, Wei T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A printer cartridge (10) including a leak resistant ink reservoir (20) a wicking mechanism (40) and an inking apparatus (60). The reservoir (20) is for a predetermined quantity of ink and resists leakage by an arrangement of venting (22) and dispensing apertures (26) arranged and provided with barriers (24 25). The wicking, mechanism (40) combines compressible capillary tubing (42) with an applicator (50) so that pressure on the applicator (50) squeezes the capillary tubing (42) to provide both pumping and capillary transfer of ink from the reservoir (20) to the applicator (50). The inking apparatus (60) intermittently presses against the applicator (50) to pick up a film of ink and to …
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 12, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 12, 2013.
- 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.