| (19) |
 |
|
(11) |
EP 0 372 878 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
10.04.1991 Bulletin 1991/15 |
| (43) |
Date of publication A2: |
|
13.06.1990 Bulletin 1990/24 |
| (22) |
Date of filing: 04.12.1989 |
|
| (51) |
International Patent Classification (IPC)5: B41M 5/30 |
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
07.12.1988 JP 309150/88
|
| (71) |
Applicant: OJI PAPER COMPANY LIMITED |
|
Tokyo (JP) |
|
| (72) |
Inventor: |
|
- Hirota, Satoru
Yokohama-shi
Kanagawa-ken (JP)
|
| (74) |
Representative: Baillie, Iain Cameron et al |
|
c/o Ladas & Parry
Altheimer Eck 2
80331 München
80331 München (DE) |
|
| |
|
| (54) |
Heat-sensitive recording paper |
(57) In a heat-sensitive recording paper comprising a support coated with a heat-sensitive
color-forming layer containing a color-forming dye material and a color developer,
heat-sensitive color-forming layer contains parabenzylbiphenyl and 4,4′-thiobis(6-tertiary-butyl-3-methylphenyl)
in order to develop highly sensitive heat-sensitive recording paper which would neither
form color in non-image areas nor fade in image areas even when it was submerged in
water.