Apparatus to ensure the quality of printed work
CA 1105731 A · Owner: Heidelberger Druckmaschinen Aktiengesellschaft · Inventors: Jeschke, Willi; Loffler, Gerhard; Uhrig, Rudolf-Karl
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification describes a monitoring apparatus for the densiotometric evaluation of printed print monitoring strip. The apparatus consists of a common bracket with densitometers at selective mutual intervals forming gaps between themselves for the exclusive full tone density measurements. A second set of densitometers are insertable in the gaps between the first set of densitometers for measuring the full tone and/ or screen tone values necessary for mathematical correlation into quality accessing parameters.
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 July 28, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 1998.
- 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.