Title (en)

COPYING SYSTEM AND METHOD FOR ITS MANUFACTURE, AND OFFSET OR PRINTING DYES USEFUL IN THIS SYSTEM

Publication

EP 0037477 A3 19820526 (DE)

Application

EP 81101875 A 19810313

Priority

• DE 3011708 A 19800326
• DE 3011709 A 19800326
• DE 3103816 A 19810204

Abstract (en)

[origin: US4404251A] The invention relates to a pressure-sensitive, carbonless copying system and to a process for the production of pressure-sensitive, carbonless copying system wherein a non-aqueous, substantially solvent free printing ink containing micro-capsules which contain dye-precursors, is applied by wet and dry offset and book printing techniques to all or part of at least one surface of a paper substrate; and to printing inks comprising (1) binders, (2) microcapsules containing dye precursors, (3) spacers having a grain size of from 1.5 to 10 times the diameter of the microcapsules, and optionally auxiliaries and additives.

IPC 1-7

B41M 5/00

IPC 8 full level

B41M 1/02 (2006.01); B41M 1/06 (2006.01); B41M 1/08 (2006.01); B41M 5/00 (2006.01); B41M 5/124 (2006.01)

CPC (source: EP US)

B41M 1/02 (2013.01 - EP US); B41M 1/06 (2013.01 - EP US); B41M 1/08 (2013.01 - EP US); B41M 5/1246 (2013.01 - EP US); Y10S 428/914 (2013.01 - EP US); Y10T 428/249995 (2015.04 - EP US); Y10T 428/249997 (2015.04 - EP US)

Citation (search report)

• [AD] US 3914511 A 19751021 - VASSILIADES ANTHONY E
• [AD] DE 2541001 A1 19770317 - EUPACO PAPIER VERTRIEB GMBH &
• [A] CH 612883 A5 19790831 - RUECKER ROLF [CH]
• [AD] US 3016308 A 19620109 - NORMAN MACAULAY
• [A] US 3578482 A 19710511 - WHITAKER JOHN G, et al
• [A] DE 2756586 A1 19790621 - RENKER GMBH
• [A] DE 2833651 A1 19800221 - BASF AG

Designated contracting state (EPC)

AT BE CH DE FR GB IT LI NL SE

DOCDB simple family (publication)

EP 0037477 A2 19811014; EP 0037477 A3 19820526; EP 0037477 B1 19840822; DE 3165625 D1 19840927; US 4404251 A 19830913

DOCDB simple family (application)

EP 81101875 A 19810313; DE 3165625 T 19810313; US 35203882 A 19820224