Patent · US Expired

Method and apparatus for recording color pictures for multicolor printing

US4561016A · kind A · utility

40Cited by

1References

23Claims

0Family size

Assignee

Dr. Ing. Rudolf Hell GmbH · DE

Inventors

Eggert Jung · Soest, DE
Christian Roes · Kiel, DE
Andreas Wigger · Kiel, DE
Ernst-August Ziemen · Kiel, DE

Key dates

Filing date	May 18, 1983
Grant date	Dec 24, 1985
Priority date	—
Expiry date	May 18, 2003

Classification

Technology area (CPC H)Electricity
CPC primaryH04N1/6033
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Method and apparatus for recording color pictures wherein color proofs are made before the actual printing for quality control in multicolor printing processes. The color pictures are exposed on a chromatic material wherein the exposed colors must coincide with the colors which are later to be printed on paper. So as to achieve the color equivalent color picture exposure, the required color density values for the chromatic material of the selected printed and exposed colors are identified with a visual or mensurational comparison of the CIE coordinates. The identified color density values for the exposed colors are allocated to the corresponding color separation values of the colors to be printed and during recording the allocated color density values are utilized instead of the color separation values and are converted into signals for driving a color exposure unit for example a proof recorder.

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