US853643A - Photographic paper. - Google Patents
Photographic paper. Download PDFInfo
- Publication number
- US853643A US853643A US31702806A US1906317028A US853643A US 853643 A US853643 A US 853643A US 31702806 A US31702806 A US 31702806A US 1906317028 A US1906317028 A US 1906317028A US 853643 A US853643 A US 853643A
- Authority
- US
- United States
- Prior art keywords
- photographic paper
- emulsion
- acid
- lumiere
- excess
- 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
- 239000000839 emulsion Substances 0.000 description 6
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- LNTHITQWFMADLM-UHFFFAOYSA-N gallic acid Chemical compound OC(=O)C1=CC(O)=C(O)C(O)=C1 LNTHITQWFMADLM-UHFFFAOYSA-N 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940074391 gallic acid Drugs 0.000 description 1
- 235000004515 gallic acid Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000003378 silver 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/42—Developers or their precursors
Definitions
- the invention has for its object the preparation of silver salt photographic papers containing an excess of soluble silver salt and e of development by simple immersion in water.
- silver salt papers containing an excess of salt such as papers prepared with citrate of silver
- a developer such ashydroquinone, gallic. acid, or other developing sub stance, in acid solution for example, .which, V by actingupon the excess of soluble silver salts of the paper,. produces-reduced silver which gradually fixes on the image the impression of which the action of light.
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Paper (AREA)
Description
capab NI D STATES. PATENT .OFFIOE.
AUGUSTE LUMIERE AND LOUIS LUMIERE, OF LYONMONPLAISIR, FRANCE.
PHYQTQGRAPHIC PAPER;
Speeifi'cation of Letters Patent.
Patented May 14, 1907.
' Application filed May 15. 1906. Serial No. 317,028.
To all 1421mm it may concern:
Be it known that we, AUGUs'rE LUMIiaRE and LOUIS LUMIERE, citizens of France, residing at Lyon-Monplaisir, France, have invented new and useful Improvements in Photographic Papers, of which the following is a specification.
The invention has for its object the preparation of silver salt photographic papers containing an excess of soluble silver salt and e of development by simple immersion in water.
It is knownthat silver salt papers containing an excess of salt, such as papers prepared with citrate of silver, can be slightly impressioned and then treated with a developer, such ashydroquinone, gallic. acid, or other developing sub stance, in acid solution for example, .which, V by actingupon the excess of soluble silver salts of the paper,. produces-reduced silver which gradually fixes on the image the impression of which the action of light.
Hitherto it has not been possible to introduce directly the developing substance. into the emulsion 'used in the preparation of photographic papers in order to permit of the development of the image by simple immersion in water; the addition ofa developing substance to the emulsion promotes in fact, at the end of a very short time, the reduction of the solublesilver salt. In carrying the inhas been commenced by photographic soluble silver vention into effect this inconvenience is remedied by the addition of sulfurcus acid either to the emulsion or to the developing substance which is added to it."
The following is an example of how one can proc red in the latter case by employing gallic aciil.
Make a twentyper cent alcoholic solution of gallic acid and introduce into it tencubic centimeters of liquid sulfurous acid for every one hundred cubic centimeters of solution. Add in the dark fifty cubic centimeters of this solution to every one hundred cubic centimeters of citrate emulsion. The emulsion thus obtained can be readily prepared and spread without incurring any darkening.
The above mentioned quantities can be modified Within large proportions. and they have only been. cited by way of example. I
What we claim as our invention and desire to secure by Letters Patent, is z- I The herein described article, consisting of an emulsion containing an excess of soluble silver salt, a developer and sulfurous acid.-
In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.
AUGUSTE LUMIERE. LOUIS LUMIERE.
Witnesses: I GASTON JEAUNIAUX, P MARIN VACHON.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31702806A US853643A (en) | 1906-05-15 | 1906-05-15 | Photographic paper. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31702806A US853643A (en) | 1906-05-15 | 1906-05-15 | Photographic paper. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US853643A true US853643A (en) | 1907-05-14 |
Family
ID=2922100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US31702806A Expired - Lifetime US853643A (en) | 1906-05-15 | 1906-05-15 | Photographic paper. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US853643A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2572357A (en) * | 1945-07-13 | 1951-10-23 | Polaroid Corp | Photographic product comprising a fluid processing agent and apparatus for use in connection therewith |
| US3010827A (en) * | 1956-12-22 | 1961-11-28 | Agfa Ag | Photographic developer |
| US3457079A (en) * | 1964-12-30 | 1969-07-22 | Konishiroku Photo Ind | Photographic silver halide emulsions stabilized with gallic acid or an alkyl ester thereof |
| US3751255A (en) * | 1972-03-24 | 1973-08-07 | Eastman Kodak Co | Photosensitive and thermosensitive element, composition and process |
-
1906
- 1906-05-15 US US31702806A patent/US853643A/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2572357A (en) * | 1945-07-13 | 1951-10-23 | Polaroid Corp | Photographic product comprising a fluid processing agent and apparatus for use in connection therewith |
| US3010827A (en) * | 1956-12-22 | 1961-11-28 | Agfa Ag | Photographic developer |
| US3457079A (en) * | 1964-12-30 | 1969-07-22 | Konishiroku Photo Ind | Photographic silver halide emulsions stabilized with gallic acid or an alkyl ester thereof |
| US3751255A (en) * | 1972-03-24 | 1973-08-07 | Eastman Kodak Co | Photosensitive and thermosensitive element, composition and process |
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