EP 0788889 B1 20010808 - A thermal sensitive recording sheet
Title (en)
A thermal sensitive recording sheet
Title (de)
Wärmeempfindliches Aufzeichnungsblatt
Title (fr)
Feuille d'enregistrement sensible à la chaleur
Publication
Application
Priority
JP 2031296 A 19960206
Abstract (en)
[origin: EP0788889A2] A thermally sensitive recording sheet which comprises on a substrate, a thermally sensitive colour developing layer comprising: (a) a colourless or pale coloured basic leuco dye; (b) an organic colour developer of formula (I): <CHEM> wherein A is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro, each of R1, R2 and R3, which may be the same or different, is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro, or R1 and R2 form, together with the carbon atoms to which they are attached, an aromatic ring, and Y is sulfur or oxygen; or an organic colour developer of formula (II): <CHEM> wherein B is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro, each of R1, R2 and R3, which may be the same or different, is hydrogen, C1-C4 alkyl, C1-C4 alkoxy, hydroxy or nitro, or R1 and R2 form, together with the carbon atoms to which they are attached, an aromatic ring, and Y is sulfur or oxygen; and (c) 0.01-2 parts, based on 1 part of colour developer of formula (I) or (II), of a stabiliser which is a diphenylsulfone derivative of formula (III): <CHEM> v
IPC 1-7
IPC 8 full level
B41M 5/333 (2006.01); B41M 5/337 (2006.01)
CPC (source: EP)
B41M 5/3333 (2013.01); B41M 5/3375 (2013.01)
Designated contracting state (EPC)
BE DE FR GB IT SE
DOCDB simple family (publication)
EP 0788889 A2 19970813; EP 0788889 A3 19980408; EP 0788889 B1 20010808; DE 69705973 D1 20010913; DE 69705973 T2 20011122; JP 3160885 B2 20010425; JP H09207450 A 19970812
DOCDB simple family (application)
EP 97300278 A 19970117; DE 69705973 T 19970117; JP 2031296 A 19960206