Patent · US Expired

Copying apparatus for producing combined copies

US4472050A · kind A · utility

17Cited by

9References

5Claims

0Family size

Assignee

Lutz H. Prufer · DE

Inventors

Hermann Stockburger · Bayreuth, DE
Hans-Georg Winderlich · Villingen-Schwenningen, DE
Siegfried Bauer · Bruchsal, DE
Zeljko H. Adamovic · Villingen-Schwenningen, DE

Key dates

Filing date	Jan 3, 1984
Grant date	Sep 18, 1984
Priority date	—
Expiry date	Jan 3, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG07F17/26
WIPO fieldControl
WIPO sectorInstruments

Abstract

A copying apparatus is disclosed in which an information derived from an external information source may be combined with an original to be copied. The imaging arrangement of the copying apparatus comprises an arrangement for blocking at least selected portions of the light path between the original and the image to be formed by the imaging optics. The light path blocking arrangement is preferably formed by an LCD-layer associated with the platen on which the original to be copied is laid, the LCD-element being placed under the control of the external information source.

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