GB956368A - Improved photographic developers - Google Patents
Improved photographic developersInfo
- Publication number
- GB956368A GB956368A GB27985/60A GB2798560A GB956368A GB 956368 A GB956368 A GB 956368A GB 27985/60 A GB27985/60 A GB 27985/60A GB 2798560 A GB2798560 A GB 2798560A GB 956368 A GB956368 A GB 956368A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sodium
- photographic
- aug
- silver halide
- developing agent
- 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
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 abstract 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 3
- 238000000034 method Methods 0.000 abstract 3
- 229910052708 sodium Inorganic materials 0.000 abstract 3
- 239000011734 sodium Substances 0.000 abstract 3
- RVBUGGBMJDPOST-UHFFFAOYSA-N 2-thiobarbituric acid Chemical compound O=C1CC(=O)NC(=S)N1 RVBUGGBMJDPOST-UHFFFAOYSA-N 0.000 abstract 2
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 229910052709 silver Inorganic materials 0.000 abstract 2
- 239000004332 silver Substances 0.000 abstract 2
- -1 silver halide Chemical class 0.000 abstract 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 abstract 2
- 239000000243 solution Substances 0.000 abstract 2
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 abstract 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 abstract 1
- 108010010803 Gelatin Proteins 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 229910052783 alkali metal Inorganic materials 0.000 abstract 1
- 150000001340 alkali metals Chemical class 0.000 abstract 1
- 239000007864 aqueous solution Substances 0.000 abstract 1
- 239000002585 base Substances 0.000 abstract 1
- 239000001768 carboxy methyl cellulose Substances 0.000 abstract 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 abstract 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 abstract 1
- AJPXTSMULZANCB-UHFFFAOYSA-N chlorohydroquinone Chemical compound OC1=CC=C(O)C(Cl)=C1 AJPXTSMULZANCB-UHFFFAOYSA-N 0.000 abstract 1
- 150000001875 compounds Chemical class 0.000 abstract 1
- 239000000839 emulsion Substances 0.000 abstract 1
- 239000008273 gelatin Substances 0.000 abstract 1
- 229920000159 gelatin Polymers 0.000 abstract 1
- 235000019322 gelatine Nutrition 0.000 abstract 1
- 235000011852 gelatine desserts Nutrition 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000001617 migratory effect Effects 0.000 abstract 1
- PJUIMOJAAPLTRJ-UHFFFAOYSA-N monothioglycerol Chemical compound OCC(O)CS PJUIMOJAAPLTRJ-UHFFFAOYSA-N 0.000 abstract 1
- NDGRWYRVNANFNB-UHFFFAOYSA-N pyrazolidin-3-one Chemical compound O=C1CCNN1 NDGRWYRVNANFNB-UHFFFAOYSA-N 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 235000010265 sodium sulphite Nutrition 0.000 abstract 1
- 239000003381 stabilizer Substances 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
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/20—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using resistors, thermistors or semiconductors sensitive to radiation, e.g. photoconductive devices
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
956,368. Photographic processes. KODAK Ltd. Aug. 12, 1960 [Aug. 14, 1959], No. 27985/60. Heading G2C. A photographic developerwhich produces direct positives from exposed silver halide emulsion layers in a one-bath reversal process comprises a silver halide developing agent and an alkali metal selenocyanide. The developing agent may be hydroquinone, chlorohydroquinone, an alkyl-substituted hydroquinone, a p-aminophenol or a 3-pyrazolidone. The developing solutions may comprise stabilizers such as sodium sulphite or sodium is oascorbate, toning compounds such as #;#<SP>1</SP>-dithiasuberic acid and monothioglycerol, and the usual alkaline materials. A migratory transfer process may be carried out in the presence of an alkaline developer solution according to the invention. Photographic images developed according to the invention need not be fixed, but, if desired, they may be fixed by contacting them with a fixing paper prepared by soaking a paper base (which may be coated with gelatin or carboxymethyl cellulose) in an aqueous solution of sodium thioglyceride,thiobarbituric acid or sodium thiobarbiturate,with sufficient liquid between the two surfaces. Specifications 542,502, 757,271 and 767,705 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US833685A US3021212A (en) | 1959-08-14 | 1959-08-14 | Developers for photographic reversal processes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB956368A true GB956368A (en) | 1964-04-29 |
Family
ID=25265016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27985/60A Expired GB956368A (en) | 1959-08-14 | 1960-08-12 | Improved photographic developers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3021212A (en) |
| BE (1) | BE593938A (en) |
| FR (1) | FR1277988A (en) |
| GB (1) | GB956368A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3241960A (en) * | 1961-10-24 | 1966-03-22 | American Optical Corp | Method for making vectographs |
| BE637358A (en) * | 1962-09-15 | |||
| US3464822A (en) * | 1965-09-13 | 1969-09-02 | Du Pont | Process for making electrically conductive images |
| US5166045A (en) * | 1989-06-19 | 1992-11-24 | Eastman Kodak Company | Doping of silver halide emulsions with group VIB compounds to form improved photoactive grains |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1623499A (en) * | 1925-06-16 | 1927-04-05 | A corpora | |
| US2698245A (en) * | 1946-04-13 | 1954-12-28 | Polaroid Corp | Photographic product and process for making a positive transfer image |
| BE519520A (en) * | 1952-05-03 |
-
0
- BE BE593938D patent/BE593938A/xx unknown
-
1959
- 1959-08-14 US US833685A patent/US3021212A/en not_active Expired - Lifetime
-
1960
- 1960-08-09 FR FR834443A patent/FR1277988A/en not_active Expired
- 1960-08-12 GB GB27985/60A patent/GB956368A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1277988A (en) | 1961-12-08 |
| BE593938A (en) | |
| US3021212A (en) | 1962-02-13 |
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