EP 0047068 A2 19820310 - Imaging media capable of displaying sharp indicia.
Title (en)
Imaging media capable of displaying sharp indicia.
Title (de)
Aufzeichnungsmedium, das aufgezeichnete Symbole scharf wiedergibt.
Title (fr)
Milieu d'enregistrement capable de reproduire nettement des symboles enregistrés.
Publication
Application
Priority
US 18297480 A 19800902
Abstract (en)
Improved sheet material of the type wherein a base sheet is coated on at least one face with a layer comprising a film-forming polymer containing inter-connected microvoids, the layer being locally transparentizable to display contrasting indicia when there is applied to its exposed surface a transparent, colorless liquid which has a refractive index similar to that of the solid constituents of the layer. A substance which jellifies the liquid is incorporated in the layer, whereby the indicia maintain substantially the same dimensions throughout the time that the layer is locally transparentized.
IPC 1-7
IPC 8 full level
B29C 61/00 (2006.01); B29D 7/01 (2006.01); B41M 5/00 (2006.01); B41M 5/124 (2006.01)
CPC (source: EP)
B41M 5/0029 (2013.01)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0047068 A2 19820310; EP 0047068 A3 19821222; EP 0047068 B1 19860924; CA 1151869 A 19830816; DE 3175382 D1 19861030; JP H0338994 B2 19910612; JP S5775817 A 19820512
DOCDB simple family (application)
EP 81303538 A 19810803; CA 382556 A 19810724; DE 3175382 T 19810803; JP 13767381 A 19810901