| (19) |
 |
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(11) |
EP 0 903 628 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
31.03.1999 Bulletin 1999/13 |
| (43) |
Date of publication A2: |
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24.03.1999 Bulletin 1999/12 |
| (22) |
Date of filing: 06.08.1998 |
|
| (51) |
International Patent Classification (IPC)6: G03C 1/498 |
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
06.12.1997 EP 97203834
17.09.1997 EP 97202873
17.09.1997 EP 97202872
17.09.1997 EP 97202876
17.09.1997 EP 97202877
17.09.1997 EP 97202871
17.09.1997 EP 97202875
06.12.1997 EP 97203833
06.06.1998 EP 98201963
|
| (71) |
Applicant: AGFA-GEVAERT N.V. |
|
2640 Mortsel (BE) |
|
| (72) |
Inventors: |
|
- Uyttendaele, Carlo
2640 Mortsel (BE)
- Gilleir, Jan
2640 Mortsel (BE)
- Geuens, Ingrid
2640 Mortsel (BE)
- Hoogmartens, Ivan
2640 Mortsel (BE)
|
|
| |
|
| (54) |
Substantially light-insensitive thermographic recording materials with improved stability |
(57) A substantially light-insensitive thermographic recording material substantially
exclusive of cationic surfactants in which at least one non-cationic surfactant is
present, wherein the thermographic recording material comprises a support and a thermosensitive
element containing a substantially light-insensitive organic silver salt, a reducing
agent therefor in thermal working relationship therewith and a binder, characterized
in that all the non-cationic surfactants present in the thermographic recording material
together have a non-fluoro-halide ion concentration of 1500ppm or less; and a process
for the production thereof.