US2865746A - Tinting bath for photographic paper - Google Patents
Tinting bath for photographic paper Download PDFInfo
- Publication number
- US2865746A US2865746A US576247A US57624756A US2865746A US 2865746 A US2865746 A US 2865746A US 576247 A US576247 A US 576247A US 57624756 A US57624756 A US 57624756A US 2865746 A US2865746 A US 2865746A
- Authority
- US
- United States
- Prior art keywords
- photographic
- bath
- paper
- tint
- tinting
- 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
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 12
- 229920001732 Lignosulfonate Polymers 0.000 claims description 10
- 235000019357 lignosulphonate Nutrition 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 6
- NOJNFULGOQGBKB-UHFFFAOYSA-M sodium;3-[3-tert-butylsulfanyl-1-[[4-(6-ethoxypyridin-3-yl)phenyl]methyl]-5-[(5-methylpyridin-2-yl)methoxy]indol-2-yl]-2,2-dimethylpropanoate Chemical compound [Na+].C1=NC(OCC)=CC=C1C(C=C1)=CC=C1CN1C2=CC=C(OCC=3N=CC(C)=CC=3)C=C2C(SC(C)(C)C)=C1CC(C)(C)C([O-])=O NOJNFULGOQGBKB-UHFFFAOYSA-M 0.000 claims 1
- 159000000000 sodium salts Chemical class 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 238000007654 immersion Methods 0.000 description 4
- NVIFVTYDZMXWGX-UHFFFAOYSA-N sodium metaborate Chemical compound [Na+].[O-]B=O NVIFVTYDZMXWGX-UHFFFAOYSA-N 0.000 description 4
- 229920005610 lignin Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- 244000309464 bull Species 0.000 description 2
- 239000006071 cream Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- -1 methoxyl groups Chemical group 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002023 wood Substances 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
- G03C11/00—Auxiliary processes in photography
- G03C11/18—Colouring
Definitions
- a suitable tintin'g material would have to be free from toxicity, be neutral in its effect on the paper, be inexpensive, be subject to fairly close reproduction in tint, and be harmless to the photographic image.
- One object of this invention is to provide a one solution bath for producing cream, old ivory or buff tints in white photographic papers, after being processed. Another object is to provide a process for tinting photographic paper to provide cream, old ivory or bull tints.
- a lignin derivative may be used to tint photographic papers.
- This material is the sodium salt of sulfonated lignin.
- Lignin can be obtained by treating wood with sodium bisulfite and sulfurous acid (sulfite process). Lignin has been identified as a natural polymeric substance partly characterized as to structural parts but known to contain aromatic rings bearing methoxyl groups (CH The sodium salt is obtained commercially as a solid material which can be dissolved readily in water. The preparation of this material is described in U. S. Patent No. 2,491,832 issued to Salvesen et al. We have found that a small amount of sodium carbonate, sodium metaborate or the like may be added to the solution to control the alkalinity. Our preferred solution contains about 8% of the sodium salt of sulfonated lignin and about 0.7% sodium carbonate.
- the photographic print following normal processing is washed after it has been fixed in the sodium thiosulfate fixing bath or similar fixing solution, washed to remove the acid of the fixing solution and then immersed in the tinting bath.
- concentration of the bath, exhaustion and the like the intensity of the tint may be controlled by the operator. For instance, with four grams per liter and a 60 second immersion in the bath, a very pleasing light ivory tint can be obtained. Increasing the concentration to 8 grams per liter gives a bull tone with a 60 second immersion in the bath. We have found .that the proportions range from about 2 grams per liter to 10 grams per liter for general use, but lower concentrations and higher concentrations may be used with appropriate adjustments made with the time of immersion.
- Example II Photographic prints after normal processing were thoroughly washed and then immersed in a tinting bath comprising 2 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 0.71 gram sodium carbonate (Na cO for 60 seconds. The resulting tint was light ivory.
- Example III Photographic prints after normal processing were thoroughly washed and then immersed in a tinting bath comprising 8.0 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 12.5 grams of sodium metaborate for 60 seconds. The resulting tint imparted to the paper was bulf.
- Example V Photographic prints after normal processing were thoroughly washed and then immersed in a tinting bath ccmprising 8.0 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 25 grams of sodium metaborate for 60 seconds. The resulting tint imparted into the paper was buif.
- Variations may be obtained depending upon the porosity of the paper inasmuch as some papers will soak up more of the tinting bath than others. However, the reproducing ability of this bath relating to a single type of paper is good and given tint can be duplicated with respect to that particular paper. Our invention may also be used with continuous processing equipment such as that used by commercial photofinishers.
- tints produced according to our invention have good stability to light and have no elfect on the photographic stability of the image.
- An alternative method of applying our invention is to add the sodium salt of the sulfonated lignin to the developer to produce the desired tint and satisfactory results may be obtained.
- our preferred method is to use prints which have been washed following the fixing step.
- a photographic tinting bath for photographic paper consisting essentially of 2-4 parts by weight of the sodium salt of sulfonated lignin, 0.71 part by Weight sodium carbonate and 1,000 parts by weight of water.
- a photographic tinting bath for photographic paper consisting essentially of 8 parts by weight of the sodium salt of sulfonated lignin 12.5 parts by weight of sodium metaborate and 1,000 parts by Weight of water.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Paper (AREA)
Description
United 2,865,746 TINTING BATH FOR PHOTOGRAPHIC PAPER Roy 'C. Bloom and Henry J. Fassbentler, Rochester,
N. Y., assignors to Eastman Kodak Company, Roch -1- ester, N. Y., a corporation of New Jersey No Drawing. Application April 5, 1956 Serial No. 576,247 2 Claims. (Cl. 96-48) been manufactured for amateur and commercial use de pending upon the preference of those making photographic prints and consequently a wide range of papers was required to be manufactured and carried by the photographic dealers. This involves considerable expense on the part of the manufacturer who must change his manufacturing process in order to produce these various tints in paper and who must carry a large inventory to meet expected customer demands.
In order to prepare suitable tints on photographic paper, there has been desired to have a solution of dye of some sort which could be used by the photographic processor in order to tint his own paper and avoid necessity for stocking as large a number in variety of tint papers. However, a suitable tintin'g material would have to be free from toxicity, be neutral in its effect on the paper, be inexpensive, be subject to fairly close reproduction in tint, and be harmless to the photographic image.
One object of this invention is to provide a one solution bath for producing cream, old ivory or buff tints in white photographic papers, after being processed. Another object is to provide a process for tinting photographic paper to provide cream, old ivory or bull tints.
We have discovered that a lignin derivative may be used to tint photographic papers. This material is the sodium salt of sulfonated lignin. Lignin can be obtained by treating wood with sodium bisulfite and sulfurous acid (sulfite process). Lignin has been identified as a natural polymeric substance partly characterized as to structural parts but known to contain aromatic rings bearing methoxyl groups (CH The sodium salt is obtained commercially as a solid material which can be dissolved readily in water. The preparation of this material is described in U. S. Patent No. 2,491,832 issued to Salvesen et al. We have found that a small amount of sodium carbonate, sodium metaborate or the like may be added to the solution to control the alkalinity. Our preferred solution contains about 8% of the sodium salt of sulfonated lignin and about 0.7% sodium carbonate.
The photographic print following normal processing is washed after it has been fixed in the sodium thiosulfate fixing bath or similar fixing solution, washed to remove the acid of the fixing solution and then immersed in the tinting bath. Depending upon the time of immersion, concentration of the bath, exhaustion and the like, the intensity of the tint may be controlled by the operator. For instance, with four grams per liter and a 60 second immersion in the bath, a very pleasing light ivory tint can be obtained. Increasing the concentration to 8 grams per liter gives a bull tone with a 60 second immersion in the bath. We have found .that the proportions range from about 2 grams per liter to 10 grams per liter for general use, but lower concentrations and higher concentrations may be used with appropriate adjustments made with the time of immersion.
The following examples indicate the method of operation of our invention but are not intended to limit its scope.
tates Patent 0 Example I Photographic prints after normal processing were thoroughly washedand then immersed in a tinting bath comprising 8.0 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 0.71 gram sodium carbonate (Na CO3), for seconds. Theresulting tint imparted into the paper base was buff.
Example II Photographic prints after normal processing were thoroughly washed and then immersed in a tinting bath comprising 2 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 0.71 gram sodium carbonate (Na cO for 60 seconds. The resulting tint was light ivory.
Example III Photographic prints after normal processing were thoroughly washed and then immersed in a tinting bath comprising 8.0 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 12.5 grams of sodium metaborate for 60 seconds. The resulting tint imparted to the paper was bulf.
Example V Photographic prints after normal processing were thoroughly washed and then immersed in a tinting bath ccmprising 8.0 grams of the sodium salt of sulfonated lignin dissolved in a liter of water containing 25 grams of sodium metaborate for 60 seconds. The resulting tint imparted into the paper was buif.
Variations may be obtained depending upon the porosity of the paper inasmuch as some papers will soak up more of the tinting bath than others. However, the reproducing ability of this bath relating to a single type of paper is good and given tint can be duplicated with respect to that particular paper. Our invention may also be used with continuous processing equipment such as that used by commercial photofinishers.
The tints produced according to our invention have good stability to light and have no elfect on the photographic stability of the image.
An alternative method of applying our invention is to add the sodium salt of the sulfonated lignin to the developer to produce the desired tint and satisfactory results may be obtained. However, our preferred method is to use prints which have been washed following the fixing step.
We claim:
1. A photographic tinting bath for photographic paper consisting essentially of 2-4 parts by weight of the sodium salt of sulfonated lignin, 0.71 part by Weight sodium carbonate and 1,000 parts by weight of water.
2. A photographic tinting bath for photographic paper consisting essentially of 8 parts by weight of the sodium salt of sulfonated lignin 12.5 parts by weight of sodium metaborate and 1,000 parts by Weight of water.
References Cited in the file of this patent UNITED STATES PATENTS 2,186,717 Eggert et al. Ian. 9, 1940 FOREIGN PATENTS 442,522 Great Britain Feb. 3, 1936
Claims (1)
1. A PHOTOGRAPHIC TINTING BATH FOR PHOTOGRAPHIC PAPER CONSISTING ESSENTIALLY OF 2-4 PARTS BY WEIGHT OF THE SODIUM SALT OF SULFONATED LIGNIN, 0.71 PART BY WEIGHT SODIUM CARBONATE AND 1,000 PARTS BY WEIGHT OF WATER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US576247A US2865746A (en) | 1956-04-05 | 1956-04-05 | Tinting bath for photographic paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US576247A US2865746A (en) | 1956-04-05 | 1956-04-05 | Tinting bath for photographic paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2865746A true US2865746A (en) | 1958-12-23 |
Family
ID=24303573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US576247A Expired - Lifetime US2865746A (en) | 1956-04-05 | 1956-04-05 | Tinting bath for photographic paper |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2865746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323642A (en) * | 1981-03-09 | 1982-04-06 | Eastman Kodak Company | Stable photographic developers containing an indazole antifoggant and a lignosulfonate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB442522A (en) * | 1933-08-04 | 1936-02-03 | Ig Farbenindustrie Ag | Improved process for the production of multi-colour photographic pictures, and photographic material therefor |
| US2186717A (en) * | 1935-04-12 | 1940-01-09 | Agfa Ansco Corp | Production of colored photographic pictures |
-
1956
- 1956-04-05 US US576247A patent/US2865746A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB442522A (en) * | 1933-08-04 | 1936-02-03 | Ig Farbenindustrie Ag | Improved process for the production of multi-colour photographic pictures, and photographic material therefor |
| US2186717A (en) * | 1935-04-12 | 1940-01-09 | Agfa Ansco Corp | Production of colored photographic pictures |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4323642A (en) * | 1981-03-09 | 1982-04-06 | Eastman Kodak Company | Stable photographic developers containing an indazole antifoggant and a lignosulfonate |
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