A method and apparatus for developing electrostatic images
CA 2174118 A1 · Owner: Staples, Phillip Eric · Inventors: Lima-Marques, Luis; Staples, Phillip Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus to develop electrostatic images using a mist (2) which is substantially water and a colourant. Mist (2) is transported from a generation station (1) to a development station (5) via a development electrode (3). Unused mist may be recycled or extracted (8). The mist may be size classified before development so that a consistent and desired resolution is obtained. Classification by size may be achieved by passing the mist in an arcuate path (4) from the generation station (1) to the development station (5).
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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 13, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2016.
- 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.