CA971816A - Direct positive silver halide photographic emulsion - Google Patents
Direct positive silver halide photographic emulsionInfo
- Publication number
- CA971816A CA971816A CA097,916A CA97916A CA971816A CA 971816 A CA971816 A CA 971816A CA 97916 A CA97916 A CA 97916A CA 971816 A CA971816 A CA 971816A
- Authority
- CA
- Canada
- Prior art keywords
- silver halide
- halide photographic
- photographic emulsion
- direct positive
- positive silver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
- C09B23/04—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups one >CH- group, e.g. cyanines, isocyanines, pseudocyanines
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/10—The polymethine chain containing an even number of >CH- groups
- C09B23/105—The polymethine chain containing an even number of >CH- groups two >CH- groups
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
- G03C1/12—Methine and polymethine dyes
- G03C1/22—Methine and polymethine dyes with an even number of CH groups
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/485—Direct positive emulsions
- G03C1/48515—Direct positive emulsions prefogged
- G03C1/48523—Direct positive emulsions prefogged characterised by the desensitiser
- G03C1/4853—Direct positive emulsions prefogged characterised by the desensitiser polymethine dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plural Heterocyclic Compounds (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9123869 | 1969-11-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
CA971816A true CA971816A (en) | 1975-07-29 |
Family
ID=14020825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA097,916A Expired CA971816A (en) | 1969-11-14 | 1970-11-12 | Direct positive silver halide photographic emulsion |
Country Status (6)
Country | Link |
---|---|
US (1) | US3687674A (en) |
BE (1) | BE758899A (en) |
CA (1) | CA971816A (en) |
DE (1) | DE2055752C3 (en) |
FR (1) | FR2080881B1 (en) |
GB (1) | GB1328556A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2135153A1 (en) * | 1971-07-14 | 1973-01-25 | Agfa Gevaert Ag | SPECTRAL SENSITIVENESS DIRECT POSITIVE EMULSION |
US3970459A (en) * | 1971-08-19 | 1976-07-20 | Fuji Photo Film Co., Ltd. | Process for developing a direct reversal silver halide photographic light-sensitive material |
JPS5547378B2 (en) * | 1971-09-04 | 1980-11-29 | ||
US3923524A (en) * | 1973-10-29 | 1975-12-02 | Eastman Kodak Co | Fogged direct positive silver halide emulsions containing photographic sensitizing dyes derived from substituted salicylaldehydes |
-
0
- BE BE758899D patent/BE758899A/en unknown
-
1970
- 1970-11-12 CA CA097,916A patent/CA971816A/en not_active Expired
- 1970-11-12 DE DE2055752A patent/DE2055752C3/en not_active Expired
- 1970-11-13 FR FR707040575A patent/FR2080881B1/fr not_active Expired
- 1970-11-13 GB GB5420870A patent/GB1328556A/en not_active Expired
- 1970-11-16 US US90070A patent/US3687674A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE2055752A1 (en) | 1971-05-27 |
DE2055752B2 (en) | 1973-11-15 |
FR2080881A1 (en) | 1971-11-26 |
BE758899A (en) | 1971-04-16 |
FR2080881B1 (en) | 1973-02-02 |
DE2055752C3 (en) | 1974-06-06 |
GB1328556A (en) | 1973-08-30 |
US3687674A (en) | 1972-08-29 |
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