EP 0000570 B1 19810114 - ORIGINAL OF AN OPTICAL INFORMATION CARRIER AND PROCESS FOR REALISING THIS ORIGINAL
Title (en)
ORIGINAL OF AN OPTICAL INFORMATION CARRIER AND PROCESS FOR REALISING THIS ORIGINAL
Publication
Application
Priority
DE 2734581 A 19770801
Abstract (en)
[origin: US4269915A] An original of an information carrier, and a process of making the carrier is disclosed in which the carrier comprises a layer of carrier material to which a layer of recording material has been applied, which recording layer contains a relief image reproducing the information. The relief image is comprised of a plurality of part-images in one plane, adjoining one another without overlapping, and having superimposed thereon a relief grid of different depths in the areas of the individual relief part-images. At least four relief part-images are utilized corresponding to the projection colors yellow, red, blue-violet and green.
IPC 1-7
IPC 8 full level
G02B 27/42 (2006.01); G02B 27/44 (2006.01); G03C 7/00 (2006.01); G03C 9/00 (2006.01); G03B 33/00 (2006.01); G03F 1/88 (2012.01); G03F 7/00 (2006.01); G03F 7/09 (2006.01)
CPC (source: EP US)
G03C 9/00 (2013.01 - EP US); G03F 7/001 (2013.01 - EP US)
Designated contracting state (EPC)
BE CH DE FR GB NL
DOCDB simple family (publication)
US 4269915 A 19810526; AT 373698 B 19840210; AT A554578 A 19830615; CA 1109313 A 19810922; DE 2734581 B1 19780601; DE 2734581 C2 19790215; DE 2860324 D1 19810312; EP 0000570 A1 19790207; EP 0000570 B1 19810114; IT 7850547 A0 19780731; JP S5436956 A 19790319
DOCDB simple family (application)
US 92870078 A 19780727; AT 554578 A 19780731; CA 308354 A 19780728; DE 2734581 A 19770801; DE 2860324 T 19780724; EP 78100480 A 19780724; IT 5054778 A 19780731; JP 9408978 A 19780801