Ink jet printing apparatus
CA 1250783 A · Owner: Metromedia Company · Inventors: Rich, Leonard G.; Logan, David J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ink jet printing apparatus is provided for vertically randomizing the flight paths of ink drops ejected from an ink jet printing head to print dots at positions randomly deviated vertically with respect to a line scanned by the printing head. Ejected ink drops are passed through an electric field having a randomly varying intensity and direction to randomly deflect the ink drop flight path with respect to a line scanned by the printing head.
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
- Granted March 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 7, 2006.
- 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.