EP 1041437 A1 20001004 - Color photographic film exhibiting increased blue speed
Title (en)
Color photographic film exhibiting increased blue speed
Title (de)
Farbphotographischer Film mit verbesserter Empfindlichkeit im Blau
Title (fr)
Pellicule photographique couleur ayant rapidité au bleu améliorée
Publication
Application
Priority
- US 28373999 A 19990401
- US 28663499 A 19990405
- US 28689799 A 19990406
Abstract (en)
A color photographic element is disclosed containing in its blue recording layer unit a blue light reflective layer positioned to receive light from a layer in the blue recording layer unit containing latent image forming silver halide grains of maximum sensitivity. The blue light reflective layer is free of blue absorbing dye and contains tabular silver halide grains having a thickness in the range of from 0.12 to 0.15 mu m, an average aspect ratio of greater than 15, and a coating coverage of 0.4 to 1.5 g/m<2>, and formed of greater than 50 mole percent bromide, based on silver, and the layer containing latent image forming silver halide grains of maximum sensitivity contains from 0.00 to 0.5 g/m<2> of randomly oriented silver halide grains of greater than 50 mole percent bromide, based on silver, having equivalent circular diameters in the range of from 0.05 to 0.5 mu m and free of adsorbed blue absorbing dye, where the combined coating coverage of the tabular silver halide grains in the blue light reflective layer and the randomly oriented silver halide grains in the layer containing latent image forming silver halide grains of maximum sensitivity is at least 0.5 g/m<2>, based on silver.
IPC 1-7
IPC 8 full level
G03C 1/035 (2006.01); G03C 1/12 (2006.01); G03C 1/74 (2006.01); G03C 7/20 (2006.01); G03C 7/30 (2006.01)
CPC (source: EP)
G03C 7/3022 (2013.01); G03C 7/3029 (2013.01); G03C 1/0051 (2013.01); G03C 7/3041 (2013.01); G03C 2001/0055 (2013.01); G03C 2001/03511 (2013.01); G03C 2007/3025 (2013.01); G03C 2200/11 (2013.01); G03C 2200/19 (2013.01); G03C 2200/42 (2013.01)
Citation (search report)
- [XY] FR 2656434 A1 19910628 - KODAK PATHE [FR]
- [Y] DE 3420173 A1 19851205 - AGFA GEVAERT AG [DE]
- [Y] US 3989527 A 19761102 - LOCKER DAVID J
- [Y] GB 2294777 A 19960508 - KODAK LTD [GB]
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00201001 A 20000320; JP 2000105394 A 20000403