Patent · US Expired

Method of determining the area coverage of a printed original or printing plate for printing presses

US4681455A · kind A · utility

12Cited by

6References

6Claims

0Family size

Assignee

Heidelberger Druckmaschinen AG · DE

Inventors

Willi Jeschke · Bad Herrenalb, DE
Helmut Kipphan · Schwetzingen, DE
Gerhard Loffler · Walldorf, DE

Key dates

Filing date	Dec 4, 1985
Grant date	Jul 21, 1987
Priority date	—
Expiry date	Dec 4, 2005

Classification

Technology area (CPC G)Physics
CPC primaryG06V10/993
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A measuring device which is equipped with a number of sensors determines the area coverage of a printing original or printing plate for printing presses. Each individual sensor of the measuring device is calibrated with the air of calibration strips. By means of an additional sensor of the measuring device, a printing-plate and/or printing-original-specific correction calibration and an adjustment to identical values of all sensors are provided. The correction calibration and adjustment are performed by way of a calibration field and a calibration area on the printing plate and/or printing original.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.