US2217544A - Method of treating photographic material to obtain colored pictures - Google Patents
Method of treating photographic material to obtain colored pictures Download PDFInfo
- Publication number
- US2217544A US2217544A US274837A US27483739A US2217544A US 2217544 A US2217544 A US 2217544A US 274837 A US274837 A US 274837A US 27483739 A US27483739 A US 27483739A US 2217544 A US2217544 A US 2217544A
- Authority
- US
- United States
- Prior art keywords
- hydrochloric acid
- acid
- bath
- normal
- photographic material
- 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 - Lifetime
Links
- 239000000463 material Substances 0.000 title description 2
- 238000000034 method Methods 0.000 title description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 30
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 21
- 229910052709 silver Inorganic materials 0.000 description 12
- 239000004332 silver Substances 0.000 description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 11
- 239000000975 dye Substances 0.000 description 11
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 229940071870 hydroiodic acid Drugs 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 6
- FKHNZQFCDGOQGV-UHFFFAOYSA-N 2,3-dimethylquinoxaline Chemical compound C1=CC=C2N=C(C)C(C)=NC2=C1 FKHNZQFCDGOQGV-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- -1 silver ions Chemical class 0.000 description 4
- BZWKPZBXAMTXNQ-UHFFFAOYSA-N sulfurocyanidic acid Chemical class OS(=O)(=O)C#N BZWKPZBXAMTXNQ-UHFFFAOYSA-N 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- 150000001649 bromium compounds Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- ACPKAJPNUOBWGE-UHFFFAOYSA-L disodium 4-hydroxy-3-[[4-[4-[(1-hydroxy-4-sulfonatonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]naphthalene-1-sulfonate Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=CC=CC=C4C(=C3)S(=O)(=O)O)[O-])OC)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)O)[O-].[Na+].[Na+] ACPKAJPNUOBWGE-UHFFFAOYSA-L 0.000 description 1
- 150000004694 iodide salts Chemical class 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
Definitions
- the present invention relates to a treatment bath for the production of dye-images from uniformly dyed photographic silver imagesby treat- 1 ing solutions that locally destroy the dye pres- 5 ent in the layer at the areas where metallic silver is present, and in proportion to the quantity of such silver.
- Aqueous solutions of hydrohalic acids are already known as treatment solutions suitable for this purpose. It is moreover known that the eflicacy of such baths may be intensified by the addition of various chemicals; particu- (1) Hydrochloric acid 1.8% litre 1 Potassium iodide grams.. 2.2 (2) Hydrochloric acid 1.8% litre 1 Potassium iodide grams 2.2
- the solution contains in addition such a, quantity of potassium iodide that in respect of this salt the solution is 1/ 7511 silver images dyed in the same manner are converted to dye-images much more speedily and successfully, i. e., in about one minute.
- dyes cited above are to be understood as but examples; suitable dyes are also the other known dyes used in the art, in particular azo dyes, such as the .yellow Xylenwalkgelb G (Schultz Farbstofftabellen, Leipzig 1932, 7th ed., vol. 2, page 232), the blue Diaminreinblau FF 6 (Schultz Farbstofftabellen, Leipzig 1931, 7th ed., vol. 1 No. 510) and the red Polarbrillantrot B (Schultz Farbstoiftabellen, Leipzig 1932, 7th ed., vol. 2, page .An addition to the bath of hydrobromic acidor bromides also is effective, 10 but to a'less degree than hydroiodic acid.
- azo dyes such as the .yellow Xylenwalkgelb G (Schultz Farbstofftabellen, Leipzig 1932, 7th ed., vol. 2, page 232), the blue Diaminreinblau FF 6 (Schul
- hydroiodic acid reduces the con-, centration of free silver ions in the aqueous solution to a greater extent than does the hydrochloric acid.
- hydroiodic acid or other substance added to the solution may be employed in such a quantity that the hydrochloric acid is present in an excess to the equivalent amount of the added substance.
- hydroiodic acid as the addition toss hydrochloric acid, useful baths were obtained when the concentration of the solution in respect of hydrochloric acid was from 0.111, to normal, and in respect of hydroiodic acid from 0.00211. to 0.1n. It follows as a matter of course that higher or lower concentrations are quite possible,
- a treating bath comprising an acid aqueous solution of hydrochloric acidvand hyd'roiodic acid, the concentration of chloride ions ranging from 0.1 normal to 1.0 normal, the concentration of iodide ions ranging from 0.002 normal to 0.1 normal.
- a treating bath comprising an acid aqueous solution of hydrochloric acid and hydroiodic acid, the concentration of'chloride ions ranging from 0.1 normal to 1.0 normal, the concentration of iodide ions ranging from 0.002 normal to 0.1' normal, the bath further comprising a small amount of dimethyl-quinoxaline.
- photographic layers uniformly dyed with reducible dyes, a treating bath comprising hydroiodic acid and hydrochloric acid in an at least ten-fold excess to the equivalent amount of hydroiodicacid, the concentration of the iodide ions ranging from 0.002-normal to 0.1-normal.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEG0097937 | 1938-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2217544A true US2217544A (en) | 1940-10-08 |
Family
ID=7140775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US274837A Expired - Lifetime US2217544A (en) | 1938-05-27 | 1939-05-20 | Method of treating photographic material to obtain colored pictures |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2217544A (enrdf_load_stackoverflow) |
| BE (1) | BE434581A (enrdf_load_stackoverflow) |
| FR (1) | FR855366A (enrdf_load_stackoverflow) |
| GB (1) | GB535130A (enrdf_load_stackoverflow) |
-
0
- BE BE434581D patent/BE434581A/xx unknown
-
1939
- 1939-05-20 US US274837A patent/US2217544A/en not_active Expired - Lifetime
- 1939-05-25 GB GB15592/39A patent/GB535130A/en not_active Expired
- 1939-05-26 FR FR855366D patent/FR855366A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR855366A (fr) | 1940-05-09 |
| GB535130A (en) | 1941-03-31 |
| BE434581A (enrdf_load_stackoverflow) |
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