Title:
RED SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL
Document Type and Number:
Japanese Patent JP3456671
Kind Code:
B2
Abstract:
PURPOSE: To obtain the photographic material high in contrast and gradation and sensitivity by incorporating a salt of a metal of group IIa to be added to a silver halide emulsion during spectral sensitization.
CONSTITUTION: This photographic material has a silver halide emulsion layer sensitized to a red light by an anionic sensitizing dye having an absorption maximum between 600-700nm, and in this case, the anionic red-sensitive dye suitable for its use is a generally used anionic red-sensitive dye and such a dye can be used alone or in ≥2 combination. The salt of the metal of group IIa is a generally used one, such as Mg, Ca, Sr, or Ba, and their oxide can be used, preferably, water-soluble magnesium or calcium salt.
Inventors:
Rodet Depres
Application Number:
JP13086594A
Publication Date:
October 14, 2003
Filing Date:
May 23, 1994
Export Citation:
Assignee:
H.C.Starck Gmbh
International Classes:
G03C5/08; G03C1/00; G03C1/09; G03C1/12; G03C1/28; G03C1/72; G03C8/06; G03F7/07; G03F7/32; G03C1/035; G03C1/18; G03C1/22; G03C1/26; (IPC1-7): G03C1/12; G03C1/09; G03C1/28; G03C5/08; G03C8/06; G03F7/07; G03F7/32
Domestic Patent References:
| JP63271336A | ||||
| JP444029A | ||||
| JP3171135A |
Attorney, Agent or Firm:
Heikichi Odashima