EP 0466919 B1 19961120 - PHOTOGRAPHIC SILVER HALIDE MATERIAL AND PROCESS FOR FORMING REVERSAL IMAGES
Title (en)
PHOTOGRAPHIC SILVER HALIDE MATERIAL AND PROCESS FOR FORMING REVERSAL IMAGES
Title (de)
PHOTOGRAPHISCHES SILBERHALOGENIDMATERIAL UND VERFAHREN ZUR ERZEUGUNG VON UMKEHRBILDERN
Title (fr)
MATERIAU PHOTOGRAPHIQUE EN HALOGENURE D'ARGENT ET PROCEDE DE FORMATION D'IMAGES INVERSIBLES
Publication
Application
Priority
- US 9100759 W 19910204
- US 64785291 A 19910130
- US 47692590 A 19900208
Abstract (en)
[origin: WO9112566A1] A photographic silver halide emulsion comprises a dispersing medium and photographic silver haloiodide that (a) is a negative-working, core-shell silver haloiodide; (b) contains total iodide (It) within the range of 0.5 to 8 mole percent; and, (c) wherein the sivler haloiodide has a volume fraction of the shell (Vs) that is greater than 0.05 but less than or equal to a constant (A) times the total iodidie in mole percent (It) wherein A is a unitless parameter equal to 0.15 plus or minus 0.05; wherein upon exposure and two-step reversal processing of a photographic element comprising the emulsion a decrease in granularity is produced. Such a photographic silver halide emulsion is useful in a photographic silver halide element designed to form reversal images to provide a decrease in granularity of the image.
IPC 1-7
IPC 8 full level
G03C 1/035 (2006.01); G03C 5/50 (2006.01); G03C 7/30 (2006.01)
CPC (source: EP)
G03C 1/035 (2013.01); G03C 5/50 (2013.01); G03C 7/3022 (2013.01); G03C 2001/03535 (2013.01); G03C 2001/03558 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 9112566 A1 19910822; DE 69123188 D1 19970102; DE 69123188 T2 19970507; EP 0466919 A1 19920122; EP 0466919 B1 19961120; JP H04506271 A 19921029
DOCDB simple family (application)
US 9100759 W 19910204; DE 69123188 T 19910204; EP 91905395 A 19910204; JP 50491991 A 19910204