| (19) |
 |
|
(11) |
EP 0 305 922 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.07.1990 Bulletin 1990/28 |
| (43) |
Date of publication A2: |
|
08.03.1989 Bulletin 1989/10 |
| (22) |
Date of filing: 26.08.1988 |
|
| (51) |
International Patent Classification (IPC)4: B41M 5/26 |
|
| (84) |
Designated Contracting States: |
|
BE CH DE FR GB LI NL |
| (30) |
Priority: |
31.08.1987 US 91568
|
| (71) |
Applicant: EASTMAN KODAK COMPANY
(a New Jersey corporation) |
|
Rochester,
New York 14650 (US) |
|
| (72) |
Inventor: |
|
- Harrison, Daniel Jude
c/o Eastman Kodak Company
Rochester
New York 14650 (US)
|
| (74) |
Representative: Brandes, Jürgen, Dr. rer. nat. et al |
|
Wuesthoff & Wuesthoff
Patent- und Rechtsanwälte
Schweigerstrasse 2
81541 München
81541 München (DE) |
|
| |
|
| (54) |
Anti-tacking adhesive surface for thermal-printing elements |
(57) A thermal print element comprising a support having thereon a layer containing a
thermally-transferred dye image, the element having at least one layer of adhesive
thereon having an anti-tack surface, the anti-tack surface comprising at least 0.2
g/m² of particulate material, such as fumed silica, silica, alumina or polystyrene
matte beads, having a particle size up to 20 µm.
In a preferred embodiment, the adhesive layer comprises a linear, random copolyester
of one or more aromatic dibasic acids and one or more aliphatic diols, modified with
up to 30 mole % of one or more aliphatic dibasic acids, having a melt viscosity of
between 1,000 and 20,000 poise at 150°C.