GB1393400A - Photographic direct positive processes and silver halide materials therefor - Google Patents
Photographic direct positive processes and silver halide materials thereforInfo
- Publication number
- GB1393400A GB1393400A GB2860672A GB2860672A GB1393400A GB 1393400 A GB1393400 A GB 1393400A GB 2860672 A GB2860672 A GB 2860672A GB 2860672 A GB2860672 A GB 2860672A GB 1393400 A GB1393400 A GB 1393400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- emulsion
- silver halide
- positive
- exposed
- density
- 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
- 229910052709 silver Inorganic materials 0.000 title abstract 6
- 239000004332 silver Substances 0.000 title abstract 6
- -1 silver halide Chemical class 0.000 title abstract 5
- 239000000463 material Substances 0.000 title abstract 2
- 238000000034 method Methods 0.000 title abstract 2
- 239000000839 emulsion Substances 0.000 abstract 8
- 150000001875 compounds Chemical class 0.000 abstract 3
- 230000001235 sensitizing effect Effects 0.000 abstract 3
- 230000005540 biological transmission Effects 0.000 abstract 2
- SOUHUMACVWVDME-UHFFFAOYSA-N safranin O Chemical compound [Cl-].C12=CC(N)=CC=C2N=C2C=CC(N)=CC2=[N+]1C1=CC=CC=C1 SOUHUMACVWVDME-UHFFFAOYSA-N 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- ADZWSOLPGZMUMY-UHFFFAOYSA-M silver bromide Chemical compound [Ag]Br ADZWSOLPGZMUMY-UHFFFAOYSA-M 0.000 abstract 1
Classifications
-
- 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
- G03C1/48538—Direct positive emulsions non-prefogged, i.e. fogged after imagewise exposure
-
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/50—Reversal development; Contact processes
Landscapes
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US15422471A | 1971-06-17 | 1971-06-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1393400A true GB1393400A (en) | 1975-05-07 |
Family
ID=22550511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2860672A Expired GB1393400A (en) | 1971-06-17 | 1972-06-19 | Photographic direct positive processes and silver halide materials therefor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3730723A (fr) |
| BE (1) | BE784945A (fr) |
| DE (1) | DE2229454A1 (fr) |
| FR (1) | FR2141939B1 (fr) |
| GB (1) | GB1393400A (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE795121A (nl) * | 1972-02-18 | 1973-08-08 | Agfa Gevaert Nv | Fotogrfische direct-positieve emulsies |
| US4081281A (en) * | 1972-02-18 | 1978-03-28 | Agfa-Gevaert N.V. | Developing low fogged, direct-positive silver halide emulsion with an energetic developer free from halide ions |
| DE2416814A1 (de) * | 1974-04-06 | 1975-10-16 | Agfa Gevaert Ag | Direktpositives photographisches material |
| HU196752B (en) * | 1983-12-06 | 1989-01-30 | Glaxo Group Ltd | Process for production of medical compositions containing indole-derivatives and these compounds |
| JP2520602B2 (ja) * | 1986-06-10 | 1996-07-31 | 富士写真フイルム株式会社 | ハロゲン化銀写真感光材料 |
-
1971
- 1971-06-17 US US00154224A patent/US3730723A/en not_active Expired - Lifetime
-
1972
- 1972-06-15 BE BE784945A patent/BE784945A/fr unknown
- 1972-06-15 FR FR7221536A patent/FR2141939B1/fr not_active Expired
- 1972-06-16 DE DE2229454A patent/DE2229454A1/de active Pending
- 1972-06-19 GB GB2860672A patent/GB1393400A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3730723A (en) | 1973-05-01 |
| DE2229454A1 (de) | 1973-01-04 |
| FR2141939A1 (fr) | 1973-01-26 |
| BE784945A (fr) | 1972-10-02 |
| FR2141939B1 (fr) | 1978-03-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |