US1009100A - Process of toning blue photographic silver pictures. - Google Patents
Process of toning blue photographic silver pictures. Download PDFInfo
- Publication number
- US1009100A US1009100A US61530211A US1911615302A US1009100A US 1009100 A US1009100 A US 1009100A US 61530211 A US61530211 A US 61530211A US 1911615302 A US1911615302 A US 1911615302A US 1009100 A US1009100 A US 1009100A
- Authority
- US
- United States
- Prior art keywords
- pictures
- blue
- photographic silver
- bath
- toning
- 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
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title description 5
- 229910052709 silver Inorganic materials 0.000 title description 5
- 239000004332 silver Substances 0.000 title description 5
- -1 potassium ferricyanid Chemical compound 0.000 description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 150000003839 salts Chemical class 0.000 description 5
- DHCDFWKWKRSZHF-UHFFFAOYSA-N sulfurothioic S-acid Chemical compound OS(O)(=O)=S DHCDFWKWKRSZHF-UHFFFAOYSA-N 0.000 description 5
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 4
- 235000019345 sodium thiosulphate Nutrition 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 159000000014 iron salts Chemical class 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 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
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical class [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229960002413 ferric citrate Drugs 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NPFOYSMITVOQOS-UHFFFAOYSA-K iron(III) citrate Chemical compound [Fe+3].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NPFOYSMITVOQOS-UHFFFAOYSA-K 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- ORFSSYGWXNGVFB-UHFFFAOYSA-N sodium 4-amino-6-[[4-[4-[(8-amino-1-hydroxy-5,7-disulfonaphthalen-2-yl)diazenyl]-3-methoxyphenyl]-2-methoxyphenyl]diazenyl]-5-hydroxynaphthalene-1,3-disulfonic acid Chemical compound COC1=C(C=CC(=C1)C2=CC(=C(C=C2)N=NC3=C(C4=C(C=C3)C(=CC(=C4N)S(=O)(=O)O)S(=O)(=O)O)O)OC)N=NC5=C(C6=C(C=C5)C(=CC(=C6N)S(=O)(=O)O)S(=O)(=O)O)O.[Na+] ORFSSYGWXNGVFB-UHFFFAOYSA-N 0.000 description 1
- BYGOPQKDHGXNCD-UHFFFAOYSA-N tripotassium;iron(3+);hexacyanide Chemical compound [K+].[K+].[K+].[Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] BYGOPQKDHGXNCD-UHFFFAOYSA-N 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
- G03C7/26—Silver halide emulsions for subtractive colour processes
Definitions
- nnnnls'mma or cnannorrnnnoQQennum, assienoni 'ro cnnmrscnn FABRIK AUF ACTIEN wow. 1:. scnnnme), or BERLIN, GERMANY.
- photographic silver pictures may be given a blue tone in a bath containing potassium ferricyanid (K FeCy called in the trade red prussiate of potash, a ferric salt, for instance, ammonlum ferrlc cltrate, and an acid, for instance, acetic or citric acid.
- K FeCy potassium ferricyanid
- ferric salt for instance, ammonlum ferrlc cltrate
- acid for instance, acetic or citric acid.
- the blue tones so obtained are fast against light but have in the deeper shades a greenish black touch. It has been attempted to modify this tone, as in German Patent No. 200,194, where it is stated that by employing salts of cobalt with iron salts a neutral tint may be obtained.
- a pure blue tone approaching Delft blue may be obtained in pictures toned blue in the ordinary way by means of ferric salts and potassium ferricyanid by treating such bluetoned pictures with a dilute solution containing a' thiosulfate, for instance, sodium thiosulfate- (Na s O and potassium ferricyanid, preferably in about the proportion of one per cent. of sodium thiosulfate and one-half ofone per cent. of potassium ferricyanid.
- a' thiosulfate for instance, sodium thiosulfate- (Na s O and potassium ferricyanid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Coloring (AREA)
Description
STATES PATENT mm PAUL No Drawing.
Specification of Letters Patent.
Application filed March 18, 1911. Serial No. 615,302.
nnnnls'mma, or cnannorrnnnoQQennum, assienoni 'ro cnnmrscnn FABRIK AUF ACTIEN wow. 1:. scnnnme), or BERLIN, GERMANY.
PROCESS OF TONING BLUE PHOTOGRAPHIG SILVER PICTURES.
Patented Nov. 21, 1911.
provement in Processes of Toning Blue Photographic Silver Pictures, of which the following is a specification.
It is known that photographic silver pictures, especially bromid silver and gas light pictures, may be given a blue tone in a bath containing potassium ferricyanid (K FeCy called in the trade red prussiate of potash, a ferric salt, for instance, ammonlum ferrlc cltrate, and an acid, for instance, acetic or citric acid. The blue tones so obtained are fast against light but have in the deeper shades a greenish black touch. It has been attempted to modify this tone, as in German Patent No. 200,194, where it is stated that by employing salts of cobalt with iron salts a neutral tint may be obtained. Y
According to the present invention a pure blue tone approaching Delft blue may be obtained in pictures toned blue in the ordinary way by means of ferric salts and potassium ferricyanid by treating such bluetoned pictures with a dilute solution containing a' thiosulfate, for instance, sodium thiosulfate- (Na s O and potassium ferricyanid, preferably in about the proportion of one per cent. of sodium thiosulfate and one-half ofone per cent. of potassium ferricyanid. This can be convenient-1y done by adding to the original blue toning bath, after the picture has been toned therein, a small quantity of sodium thiosulfate, preferably about one per cent, and immers-v ing the picture in a wet condition in this modified bath, or bv immersing the wet pic-' ture in a second toning bath containing preferably about one-half of one per cent.
of potassium ferric anid and about one per cent. of sodium thiosulfate. In any event the pro ortion of thiosulfate should not exceed ve per cent. and that of potassium ferricyanid should not exceed one-half of one per cent, because higher proportions of these ingredients would cause the bath to attack the picture, dissolve" the blue iron salts and color the white portions blue- In the thiosulfate bath the picture loses entirely the gltone which is very similar to that of Delft As an example, I proceed in the following manner: I bathe the picture to be toned blue in the ordinary bath (potassium ferricyanid 0.2 grams, ferric citrate 0.2 grams, citric acid 0.8 grams and water 100 cubic centimeters) for about five minutes, wash it for half an hour in water and then bathe it for a short time (about one-half to two minutes) in a solution of 0.05 grams of potassium ferricyanid and 0.1 gram of sodium thiosulfate in 100 cubic centimeters of water. The picture is then washed and dried.
I claim as my invention:
1. The herein described process of modifying the blue tone of photographic pictures which have been toned by means of a bath containing otassium ferricyanid and a ferric salt, such process consisting in treating the toned picture with a dilute solution containing not exceeding five per cent. of a thiosulfate and not exceeding onehalf of one per cent. of potassium ferricyanid, substantially as set forth.
2. The herein described fying the blue tone .of photographic pictures which have been toned by means of a bath containingotassium ferricyanid and a ferric salt, sucfi process consisting in removing the picture from the bath, adding to the bath not exceeding five per cent. of a thiosulfate and immersmg the picture in the altered bath, substantially as set forth.
In testimony whereof I have hereunto set my hand in the presence of two subscribing w1tnesses.
HENRY Hasrnn, WOLDEMAR HAUPT.
process of modi-
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61530211A US1009100A (en) | 1911-03-18 | 1911-03-18 | Process of toning blue photographic silver pictures. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61530211A US1009100A (en) | 1911-03-18 | 1911-03-18 | Process of toning blue photographic silver pictures. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1009100A true US1009100A (en) | 1911-11-21 |
Family
ID=3077410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US61530211A Expired - Lifetime US1009100A (en) | 1911-03-18 | 1911-03-18 | Process of toning blue photographic silver pictures. |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US1009100A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458168A (en) * | 1945-08-27 | 1949-01-04 | Polaroid Corp | Production of light-polarizing images |
| US4330615A (en) * | 1981-03-25 | 1982-05-18 | Alexandra Romanenko | Blue background slides from a black and white film process |
-
1911
- 1911-03-18 US US61530211A patent/US1009100A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2458168A (en) * | 1945-08-27 | 1949-01-04 | Polaroid Corp | Production of light-polarizing images |
| US4330615A (en) * | 1981-03-25 | 1982-05-18 | Alexandra Romanenko | Blue background slides from a black and white film process |
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