| (19) |
 |
|
(11) |
EP 1 197 797 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
02.01.2004 Bulletin 2004/01 |
| (43) |
Date of publication A2: |
|
17.04.2002 Bulletin 2002/16 |
| (22) |
Date of filing: 14.09.2001 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
04.10.2000 EP 00203439
|
| (71) |
Applicant: AGFA-GEVAERT |
|
2640 Mortsel (BE) |
|
| (72) |
Inventors: |
|
- Van den Zegel, Marc c/o Agfa-Gevaert
2640 Mortsel (BE)
- De Vester, Marleen c/o Agfa-Gevaert
2640 Mortsel (BE)
|
|
| |
|
| (54) |
System for direct X-ray radiography suitable for use in industrial non-destructive
testing applications and personal monitoring |
(57) A system has been disclosed for use in radiographic industrial non-destructive testing
materials and personal monitoring, making use therefor, of tabular silver brom(oiod)ide
emulsion grains having {111} major faces, an average equivalent circular diameter
of at least 0.5 µm and an average thickness of less than 0.30 µm, having been chemically
sensitized by the steps of adding at least a gold salt in order to provide the surface
of said tabular grains with at least 6000 atoms of gold per µm
2 of its grain surface and per (0.1 µm of thickness)
2 ; and at least a sulfite salt in such an amount that the ratio of the number of gold
atoms per µm
2 and (concentration of said sulfite salt, expressed in mmole per mole of silver)
2 is at least 200000.