Procedure and means for producing a contrast image
CA 1297979 C · Owner: Kone Elevator Gmbh · Inventors: Roschier, Nils Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A procedure and an apparatus for producing an image based on contract discrimination in an image forming apparatus with one-dimensional or multi-dimensional image field employable in small format image forming applications, have image signals obtained from each image forming points producing an electric current in a respective image forming channel, this current exerting an influence on the current passing from a tapping point of the image forming channel to said channel and on the, voltage produced at the tapping point in such a way that, their product is proportional to the image signal current and the output of image forming is a frequency which is proportional to the current, a desired …
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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
- Granted March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
- 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
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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.