US615792A - Alfred bogisoh - Google Patents
Alfred bogisoh Download PDFInfo
- Publication number
- US615792A US615792A US615792DA US615792A US 615792 A US615792 A US 615792A US 615792D A US615792D A US 615792DA US 615792 A US615792 A US 615792A
- Authority
- US
- United States
- Prior art keywords
- alfred
- bogisoh
- developing
- substitution products
- halogen substitution
- 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
- 229910052736 halogen Inorganic materials 0.000 description 6
- 150000002367 halogens Chemical group 0.000 description 6
- 238000006467 substitution reaction Methods 0.000 description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L Sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N benzohydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate dianion Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 2
- AJPXTSMULZANCB-UHFFFAOYSA-N chlorohydroquinone Chemical compound OC1=CC=C(O)C(Cl)=C1 AJPXTSMULZANCB-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 239000001184 potassium carbonate Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 235000010265 sodium sulphite Nutrition 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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
- G03C5/30—Developers
- G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring
Definitions
- O -I.1 hydroquinone of the constitution O II OHAE are distinguished by the fact that they develop quickly and very powerfully. and are only in the slightest degree affected by the temperature. They are thus capable of excellent service in instantaneous photography and in the studio or laboratory.
- These halogen substitution products are used according to the following example: Water, one hundred cubic centimeters; monochlorhydroquinone, one gram; crystallized sodium sulfite,
- a developing solution for photographic negatives composed of an alkaline, aqueous solution of the halogen substitution products of dioxybenzenes, substantially as set forth.
Description
UNITE STATES ALFRED BOGISCI-I, OF FEUERBACH, GERMANY, ASSIGNOR TO J. I'IAUFF &
PATENT OFFICE.
(30., GESELLSCHAFT MIT BESCHRANKTER HAFTUNG, OF SAME PLACE.
PHOTOGRAPHIC DEVELOPER AND PROCESS OF DEVELOPING.
SPECIFICATION forming part of Letters Patent No. 615,792, dated December 189 Application filed July 20, 1898. Serial No. 686,406. (No specimens.)
O -I.1 hydroquinone of the constitution O II OHAE are distinguished by the fact that they develop quickly and very powerfully. and are only in the slightest degree affected by the temperature. They are thus capable of excellent service in instantaneous photography and in the studio or laboratory. These halogen substitution products are used according to the following example: Water, one hundred cubic centimeters; monochlorhydroquinone, one gram; crystallized sodium sulfite,
eight grams; potassium carbonate or dry s0 dium carbonate, four grams; potassium bro-- mid, 1:10, ten to twenty drops.
Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. The process herein described of developing the photographic image on sensitized plates, which consists in subjecting the sensitized plates to the action of a solution of the halogen substitution products of dioxybenzenes, substantially as set forth.
2. A developing solution for photographic negatives, composed of an alkaline, aqueous solution of the halogen substitution products of dioxybenzenes, substantially as set forth.
In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing Witnesses.
ALFRED BOGISOH.
Witnesses ERNST DIETRICH, WM. HAHN.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US615792A true US615792A (en) | 1898-12-13 |
Family
ID=2684402
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US615792D Expired - Lifetime US615792A (en) | Alfred bogisoh |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US615792A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3297445A (en) * | 1963-04-01 | 1967-01-10 | Eastman Kodak Co | Photographic inhibitor releasing developers |
-
0
- US US615792D patent/US615792A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3297445A (en) * | 1963-04-01 | 1967-01-10 | Eastman Kodak Co | Photographic inhibitor releasing developers |
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