US2550617A - Fine grain photographic developer containing morpholine - Google Patents
Fine grain photographic developer containing morpholine Download PDFInfo
- Publication number
- US2550617A US2550617A US674939A US67493946A US2550617A US 2550617 A US2550617 A US 2550617A US 674939 A US674939 A US 674939A US 67493946 A US67493946 A US 67493946A US 2550617 A US2550617 A US 2550617A
- Authority
- US
- United States
- Prior art keywords
- morpholine
- fine grain
- developer containing
- photographic developer
- containing morpholine
- 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
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 title description 22
- 239000000243 solution Substances 0.000 description 10
- ZFIQGRISGKSVAG-UHFFFAOYSA-N 4-methylaminophenol Chemical compound CNC1=CC=C(O)C=C1 ZFIQGRISGKSVAG-UHFFFAOYSA-N 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 7
- 239000004332 silver Substances 0.000 description 5
- 229910052709 silver Inorganic materials 0.000 description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 150000004820 halides Chemical class 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 239000000837 restrainer Substances 0.000 description 2
- -1 silver halide Chemical class 0.000 description 2
- VGTPCRGMBIAPIM-UHFFFAOYSA-M sodium thiocyanate Chemical compound [Na+].[S-]C#N VGTPCRGMBIAPIM-UHFFFAOYSA-M 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- VSTZVCJQGSLNLL-UHFFFAOYSA-N 2-aminophenyl hydrogen sulfate Chemical compound NC1=CC=CC=C1OS(O)(=O)=O VSTZVCJQGSLNLL-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 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 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 150000002780 morpholines Chemical class 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 235000010269 sulphur dioxide Nutrition 0.000 description 1
- 239000004291 sulphur dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003442 weekly effect Effects 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
Definitions
- My invention relates generally to the art of photography, and in particular it relates to developers, that is, solutions for developing latent images on photographic film having a silver tween 8.2 and 9. I have found that this pH range and the resultant very fine grain obtained with my developer to be due largely to the presence of the mcrpholine in the solution, and that the halide emulsion thereon, after exposure of the 5 grain size is measurably increased when other film to the action of light. alkaline compounds are used instead.
- Silver halide Metol paramethylaminophenol solvents, as sodium thiocyanate, are also added Sulphate 6 in certain instances, for decreasing the size of the sodmm Sumte 80 silver grains.
- Developers including those containing metolhydroquinone are already known in the art which use derivatives of morpholine, or which use reaction products of morpholine and sulphur dioxide, and which use sulfites of morphcline, but none of these have the properties of my new and improved developer, and none of these prior diswhich do not contain morpholine.
- metol refers to the product commercially and commonly known as p-aramethylaminophenol sul phate.
- a photographic developer essentially consisting of an aqueous solution of the following ingredients in approximately the amounts indicated per liter of solution:
Description
Patented Apr. 24, 1951 FINE GRAIN PHOTOGRAPHIC DEVELOPER CONTAINING MORPHOLINE George L. Steans, New York, N. Y., assignor to a The FE Corporation, New York, N. Y., a corporation of New York No Drawing. Application June 6, 1946, Serial No. 674,939
1 Claim.
My invention relates generally to the art of photography, and in particular it relates to developers, that is, solutions for developing latent images on photographic film having a silver tween 8.2 and 9. I have found that this pH range and the resultant very fine grain obtained with my developer to be due largely to the presence of the mcrpholine in the solution, and that the halide emulsion thereon, after exposure of the 5 grain size is measurably increased when other film to the action of light. alkaline compounds are used instead.
Most developers, or developing solutions, com- An illustrative example of a very fine grain prise a developing agent as metol (paramethyldeveloper compounded in accordance with my aminophenol sulphate), a preservative as sodium invention is as follows:
sulfite, an accelerator as sodium carbonate, and a restrainer as potassium bromide. Silver halide Metol (paramethylaminophenol solvents, as sodium thiocyanate, are also added Sulphate) 6 in certain instances, for decreasing the size of the sodmm Sumte 80 silver grains. While these developers are relasodmn} thlocya'r late 1 tively satisfactory for'larger film sizes where the -P bromlde Morphohne "cc" 1 enlargement factor is relatively small, I have dis covered that they can be very much improved not only for use with films of smaller size, as 35 mm., but also for the larger film sizes, by the substitution in the solution for the alkalies now used of an alkaline compound containing a secondary amine and an ether group, the compound being known as morpholine of the following formula:
Water to make one liter of solution.
I believe that the foregoing example is the very first disclosure of a practical and highly beneficial metol-containing developing compound using morpholine itself. The morpholine aids in maintaining the alkalinity of the solution, and has a very noticeable effect on the keeping properties thereof when used in concentrations described,
OH CHz 0 NH for it permits the use and re-use of the developer over a much longer period of time than heretofore 2 2 possible with standard or ordinary developers Among the objects of my invention, therefore, are the formation of an extremely fine grain developer for silver halide emulsion films which has longer keeping qualities than previously known developers and which maintains its alkalinity over a longer period-of time than heretofore possible, by means of the addition to the solution of morpholine. Other objects of my invention will be obvious from the following description of an illustrative embodiment, and still others will be specifically pointed out in the following description.
Developers including those containing metolhydroquinone are already known in the art which use derivatives of morpholine, or which use reaction products of morpholine and sulphur dioxide, and which use sulfites of morphcline, but none of these have the properties of my new and improved developer, and none of these prior diswhich do not contain morpholine.
I have found, further, that morpholine may advantageously be added to the metol-containing developing solution as above described in concentrations of between .15 cc. to 3 cc. per liter, which corresponds to 315% to 3% by volume, the resultant solution achieving and retaining all the benefits above described. As used herein, and in the claim appended hereto, the term metol refers to the product commercially and commonly known as p-aramethylaminophenol sul phate.
Having described my invention, what I claim and desire to secure by Letters Patent is:
A photographic developer essentially consisting of an aqueous solution of the following ingredients in approximately the amounts indicated per liter of solution:
closures evidence any appreciation of the benefits Paramethylaminophenol sulphate grams 6 attendant the use of morpholine in the developsodium s lfite do 8O SOIU-tiOIIJ Sodium thiocyanate do 1 r This particular compound, morpholine, has otassium bromide do .7 some developing properties of its own, and. when M honn cc. 1 used as an alkaline agent in connection with metol-containing developing compounds, con- GEORGE L. STEANS. taining preservatives, silver halide solvents and restrainers, my compound has a final pH of be- (References on following page) REFERENCES CITED UNITED STATES PATENTS Number FOREIGN PATENTS Country Date Great Britain June 27, 1935 OTHER REFERENCES Number Name Date Monthly Abstract Bulletin, published by Peterson Apr. 9, 1940 Eastman Kodak 00., Rochester, New York, vol. Wood Apr. 16, 1940 26 (1940), page 19.
Wood Apr. 16, 1940 Henney: Handbook of Photography, 1939, Schneider et a1 Dec. 1, 1942 10 pages 334, 335 and 337 to 344 cited.
Kinematograph Weekly 270: p. 32, Aug. 31, 1939.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US674939A US2550617A (en) | 1946-06-06 | 1946-06-06 | Fine grain photographic developer containing morpholine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US674939A US2550617A (en) | 1946-06-06 | 1946-06-06 | Fine grain photographic developer containing morpholine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2550617A true US2550617A (en) | 1951-04-24 |
Family
ID=24708484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US674939A Expired - Lifetime US2550617A (en) | 1946-06-06 | 1946-06-06 | Fine grain photographic developer containing morpholine |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2550617A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2691587A (en) * | 1949-07-20 | 1954-10-12 | Rca Corp | Developing of diazotype images |
| US2843481A (en) * | 1954-07-19 | 1958-07-15 | Polaroid Corp | Photographic processes |
| US3220846A (en) * | 1960-06-27 | 1965-11-30 | Eastman Kodak Co | Use of salts of readily decarboxylated acids in thermography, photography, photothermography and thermophotography |
| US3372030A (en) * | 1962-12-14 | 1968-03-05 | Pavelle Corp | Method of shortening the processing time of color photography |
| DE1950369A1 (en) * | 1969-10-06 | 1971-04-22 | Polaroid Corp | Photographic developer compositions stabilised for - storage |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB430916A (en) * | 1932-12-24 | 1935-06-27 | Ig Farbenindustrie Ag | Improvements relating to photographic baths |
| US2196739A (en) * | 1938-09-23 | 1940-04-09 | Eastman Kodak Co | Photographic developer for color photography |
| US2197017A (en) * | 1939-05-17 | 1940-04-16 | Harris Seybold Potter Co | Fine grain photographic developer |
| US2197016A (en) * | 1939-05-11 | 1940-04-16 | Harris Seybold Potter Co | Preservative for photographic developers |
| US2304025A (en) * | 1939-02-23 | 1942-12-01 | Gen Aniline & Film Corp | Process for color development of photographic materials |
-
1946
- 1946-06-06 US US674939A patent/US2550617A/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB430916A (en) * | 1932-12-24 | 1935-06-27 | Ig Farbenindustrie Ag | Improvements relating to photographic baths |
| US2196739A (en) * | 1938-09-23 | 1940-04-09 | Eastman Kodak Co | Photographic developer for color photography |
| US2304025A (en) * | 1939-02-23 | 1942-12-01 | Gen Aniline & Film Corp | Process for color development of photographic materials |
| US2197016A (en) * | 1939-05-11 | 1940-04-16 | Harris Seybold Potter Co | Preservative for photographic developers |
| US2197017A (en) * | 1939-05-17 | 1940-04-16 | Harris Seybold Potter Co | Fine grain photographic developer |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2691587A (en) * | 1949-07-20 | 1954-10-12 | Rca Corp | Developing of diazotype images |
| US2843481A (en) * | 1954-07-19 | 1958-07-15 | Polaroid Corp | Photographic processes |
| US3220846A (en) * | 1960-06-27 | 1965-11-30 | Eastman Kodak Co | Use of salts of readily decarboxylated acids in thermography, photography, photothermography and thermophotography |
| US3372030A (en) * | 1962-12-14 | 1968-03-05 | Pavelle Corp | Method of shortening the processing time of color photography |
| DE1950369A1 (en) * | 1969-10-06 | 1971-04-22 | Polaroid Corp | Photographic developer compositions stabilised for - storage |
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