US2324060A - Photographic copying paper - Google Patents
Photographic copying paper Download PDFInfo
- Publication number
- US2324060A US2324060A US360444A US36044440A US2324060A US 2324060 A US2324060 A US 2324060A US 360444 A US360444 A US 360444A US 36044440 A US36044440 A US 36044440A US 2324060 A US2324060 A US 2324060A
- Authority
- US
- United States
- Prior art keywords
- paper
- chloride
- solution
- light
- sensitizing
- 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
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 22
- 150000003839 salts Chemical class 0.000 description 19
- 230000001235 sensitizing effect Effects 0.000 description 19
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 14
- 229940032296 ferric chloride Drugs 0.000 description 14
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 14
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 description 12
- 229910021529 ammonia Inorganic materials 0.000 description 11
- 238000001035 drying Methods 0.000 description 11
- 229960002523 mercuric chloride Drugs 0.000 description 11
- LWJROJCJINYWOX-UHFFFAOYSA-L mercury dichloride Chemical compound Cl[Hg]Cl LWJROJCJINYWOX-UHFFFAOYSA-L 0.000 description 11
- 238000000034 method Methods 0.000 description 10
- AAAQKTZKLRYKHR-UHFFFAOYSA-N triphenylmethane Chemical compound C1=CC=CC=C1C(C=1C=CC=CC=1)C1=CC=CC=C1 AAAQKTZKLRYKHR-UHFFFAOYSA-N 0.000 description 10
- GMACPFCYCYJHOC-UHFFFAOYSA-N [C].C Chemical group [C].C GMACPFCYCYJHOC-UHFFFAOYSA-N 0.000 description 9
- 125000003277 amino group Chemical group 0.000 description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 8
- WZKXBGJNNCGHIC-UHFFFAOYSA-N Leucomalachite green Chemical compound C1=CC(N(C)C)=CC=C1C(C=1C=CC(=CC=1)N(C)C)C1=CC=CC=C1 WZKXBGJNNCGHIC-UHFFFAOYSA-N 0.000 description 8
- 239000011248 coating agent Substances 0.000 description 8
- 238000000576 coating method Methods 0.000 description 8
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 8
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 6
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 235000005074 zinc chloride Nutrition 0.000 description 6
- 239000011592 zinc chloride Substances 0.000 description 6
- BRMYZIKAHFEUFJ-UHFFFAOYSA-L mercury diacetate Chemical compound CC(=O)O[Hg]OC(C)=O BRMYZIKAHFEUFJ-UHFFFAOYSA-L 0.000 description 5
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000001632 sodium acetate Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 2
- AXDJCCTWPBKUKL-UHFFFAOYSA-N 4-[(4-aminophenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]aniline;hydron;chloride Chemical compound Cl.C1=CC(=N)C(C)=CC1=C(C=1C=CC(N)=CC=1)C1=CC=C(N)C=C1 AXDJCCTWPBKUKL-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 101100203596 Caenorhabditis elegans sol-1 gene Proteins 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- ZXJXZNDDNMQXFV-UHFFFAOYSA-M crystal violet Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1[C+](C=1C=CC(=CC=1)N(C)C)C1=CC=C(N(C)C)C=C1 ZXJXZNDDNMQXFV-UHFFFAOYSA-M 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- FDZZZRQASAIRJF-UHFFFAOYSA-M malachite green Chemical compound [Cl-].C1=CC(N(C)C)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](C)C)C=C1 FDZZZRQASAIRJF-UHFFFAOYSA-M 0.000 description 1
- 229940107698 malachite green Drugs 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000010288 sodium nitrite Nutrition 0.000 description 1
- 150000004961 triphenylmethanes 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
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/725—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing inorganic compounds
-
- 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
- G03C1/64—Compositions containing iron compounds as photosensitive substances
-
- 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
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/725—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing inorganic compounds
- G03C1/7256—Mercury salts
-
- 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
- G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
- G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds
- G03C1/732—Leuco dyes
Definitions
- any paper of suitable photographic quality can be coated on one or both sides with a solution containing the leuco base of malachite green, methyl violet, crystal violet, rosaniline and similar kind of com-. pounds, and a light-sensitive metal salt selected from the group previously mentioned.
- the leuco base is first coated on the paper, the paper dried, and then the light-sensitive salt is coated from a solution over the leuco base, and the paper dried once again.
- the solvent for the leuco base is preferably ethyl alcohol, although other solvents such as methyl alcohol, acetone, benzene, for example, can be used, and for the metal salt the solvent most satisfactory is water.
- sensitized paper prepared as above described can be exposed to light through a transparent or translucent negative, line drawing, tracing and the like. During the. exposure, the oxidation re .action initiated results in a color image whose,
- a further object is to pro-' vide a method .of preparing such-photo-sensitive paper.
- Another object is to provide a process for making stable prints.
- k I v The following examples further illustrate the preparation and application of the photographic papers of the invention.
- Example 10 A piece of white paper was coated with a solution containing 2.5 grams of 4,4-tetramethyldiamino triphenylmethane, 0.4 gram of sodium acetate, and 0.8 gram of sodium nitrite in 250 cc. of 95% ethyl alcohol.
- the treated paper was dried andagain coated on the same side with a sensitizing solution consisting of approximately 1 gram of ferric chloride (FeCla-GHzO) in 100 cc. of water. After drying, the paper was covered on its coated surface with a film negative and exposed under a mercury vapor light until the 'cedure using other paper supports and other.
- FeCla-GHzO ferric chloride
- Example 2 r I -A suitable paper was coated with a solution containing 2.5 grams of 4,4'-tetramethyldiamino triphenylmethane and 0.4 gram of sodium acetate in 250,cc. of ethyl alcohol.
- the treated paper was dried and then recoated on the same side with a sensitizing solution consisting of 5 grams of mercuric chloride in 100 cc. of water. After drying, the sensitized paper was placed in contact with a negative and exposed and developed as described in Example I. In this case, however, it was found that-the fixation with ammonia vapor was not nearlyjaseffective as with Example I.
- Example 3 A piece of paper was coated with a solution containing approximately 2.5 grams of 4,4'-tetramethyldiamino triphenylmethane and 1 gram of ferric chloride in 250 cc. of 95% ethyl alcohol. After drying, the sensitized paper was placed in contactwith a lined tracing paper, exposed to light and fixed with moist ammonia paper as previously described. A similar kind of product was obtained by dipping another sample of the paper into the sensitizing solution, allowing to drain, drying and fixing.
- a photographic copying paper having on its surface a light-sensitive mixture consisting of a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, and a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate;
- a photographic copying paper having on its surface a light-sensitive mixture consisting of a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, and ferric chloride as a sensitizing salt.
- a photographic copying paper having on its surface a. light-sensitive mixture consisting of a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, and mercuric-chloride as a sensitizing salt.
- a photographic copying paper having on its surface a light-sensitive mixture consisting of leucomalachite green, and a sensitizing salt se-- lected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate.
- a photographic copying paper having on its surface a light-sensitive mixture consisting of leucomalachite green, and ferric chloride as a sensitizing salt.
- a photographic copying paper having on its Surface a light sensitive mixture consisting of leucomalachite green and mercuric chloride as a sensitizing salt.
- a process for making photographic prints comprising the steps of coating 9. paper with asolution comprising a. triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, drying the paper, recoating the coated surface of the paper with a solution comprising a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stanmc chloride, zinc chloride, and cupric sulfate, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stanmc chloride, zinc chloride, and cupric sulfate
- a process for making photographic prints comprising the steps of coating a paper with a solution comprising a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, drying the paper, recoating the coated surface of the paper with a solution comprising ferric chloride as the'sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- a process for making photographic prints comprising the steps ofcoating a paper with a solution comprising leucomalachite green, drying the paper, recoating the coated surface of the paper with a solution comprising a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate
- a process for making photographic prints comprising the steps of coating a paper with a solution comprising a leucomalachite green, ingthe paper, recoating the coated surface of the paper with a solution comprising ferricchloride as the sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- a process for making photographic prints comprising the steps of coating a paper with a solution comprising a leucomalachite green, ying the paper, recoati'ng the coated surface of the paper with a solution comprising mercuric chloride as the sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- a process for making photographic prints comprising the steps or coating a paper with a solution comprising a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom and a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic 0 chloride, zinc chloride, and cupric sulfate, drying 5 comprising thesteps of coating a paper with a 9.
- a process for making photographic prints solution comprising a triphenylmethane leuco 'base having at least two of the phenyl-nuclei substituted by amino groups in positions para to the methane carbon atom and ferric chloride as the sensitizing salt, drying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- a process for making photographic prints comprising the steps of coating a paper with a solution comprising a; triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom and mecuric chloride as the sensitizing salt, drying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Inorganic Chemistry (AREA)
- Color Printing (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Description
Patented July 13,1943
UNITED STATES PATENT OFFICE 2,324,060 PHOTOGRAPHIC COPYING PAPER Fred W. Boughton, Rochester, N. Y., assignor to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey No Drawing. Application October 9, 1940,
Serial No. 360,444
15 Claims. (Cl. 95-6) salt sensitizer selected from the group consisting of ferric chloride, mercuric chloride, mereuric acetate, stannic chloride, zinc chloride, and. cupric sulfate.
While it is known that certain colorless leuco bases can be oxidized to the colored dye compounds by exposure to light, and that this reaction can be accelerated by the presence of certain catalytic agents, a satisfactory photographic paper employing a triphenylmethane leuco base and a sensitizing compound of the kind above mentioned has not been, prepared heretofore. According to the present invention, any paper of suitable photographic quality can be coated on one or both sides with a solution containing the leuco base of malachite green, methyl violet, crystal violet, rosaniline and similar kind of com-. pounds, and a light-sensitive metal salt selected from the group previously mentioned. Preferably, the leuco base is first coated on the paper, the paper dried, and then the light-sensitive salt is coated from a solution over the leuco base, and the paper dried once again. The solvent for the leuco base is preferably ethyl alcohol, although other solvents such as methyl alcohol, acetone, benzene, for example, can be used, and for the metal salt the solvent most satisfactory is water.
sensitized paper prepared as above described can be exposed to light through a transparent or translucent negative, line drawing, tracing and the like. During the. exposure, the oxidation re .action initiated results in a color image whose,
depth of color varies approximately in proportion to the amount of light transmitted through relatively small, and further since bnly low con-" centrations of these materials in ordinary sol- 1 vents aren'equired, my'new photographic copying paper constitutes an economical as well as a fast reproducing material for copying line drawings, printed matter or similar contrasty subthe various parts of the pattern to. be printed.
A positive image produced from a negative ject matter, where the final permanence of the print is not a paramount consideration.
It is an object of the invention, therefore, to prepare a photographic copying paper of the kind above described. A further object is to pro-' vide a method .of preparing such-photo-sensitive paper. Another object is to provide a process for making stable prints. k I v The following examples further illustrate the preparation and application of the photographic papers of the invention.
Example] A piece of white paper was coated with a solution containing 2.5 grams of 4,4-tetramethyldiamino triphenylmethane, 0.4 gram of sodium acetate, and 0.8 gram of sodium nitrite in 250 cc. of 95% ethyl alcohol. The treated paper was dried andagain coated on the same side with a sensitizing solution consisting of approximately 1 gram of ferric chloride (FeCla-GHzO) in 100 cc. of water. After drying, the paper was covered on its coated surface with a film negative and exposed under a mercury vapor light until the 'cedure using other paper supports and other.
negatives, line drawings, translucent tracing cloths or papers.
Example 2 r I -A suitable paper was coated with a solution containing 2.5 grams of 4,4'-tetramethyldiamino triphenylmethane and 0.4 gram of sodium acetate in 250,cc. of ethyl alcohol. The treated paper was dried and then recoated on the same side with a sensitizing solution consisting of 5 grams of mercuric chloride in 100 cc. of water. After drying, the sensitized paper was placed in contact with a negative and exposed and developed as described in Example I. In this case, however, it was found that-the fixation with ammonia vapor was not nearlyjaseffective as with Example I.
In place of the 4,4-tetramethyldiamino triphenylmethane used in the above example, there can be substituted other leuco bases of the triphenylmethane series. For example, orthochloro-tetraethyldiaminotriphenylmethane sensitized with ferric chloride'an'd e p sed to light I and fixed with ammonia vapor yields 'a'satisfac-i my blue colored image. L 1
Example 3 A piece of paper was coated with a solution containing approximately 2.5 grams of 4,4'-tetramethyldiamino triphenylmethane and 1 gram of ferric chloride in 250 cc. of 95% ethyl alcohol. After drying, the sensitized paper was placed in contactwith a lined tracing paper, exposed to light and fixed with moist ammonia paper as previously described. A similar kind of product was obtained by dipping another sample of the paper into the sensitizing solution, allowing to drain, drying and fixing.
1. A photographic copying paper having on its surface a light-sensitive mixture consisting of a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, and a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate;
2. A photographic copying paper having on its surface a light-sensitive mixture consisting of a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, and ferric chloride as a sensitizing salt.
3. A photographic copying paper having on its surface a. light-sensitive mixture consisting of a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, and mercuric-chloride as a sensitizing salt.
4. A photographic copying paper having on its surface a light-sensitive mixture consisting of leucomalachite green, and a sensitizing salt se-- lected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate.
A photographic copying paper having on its surface a light-sensitive mixture consisting of leucomalachite green, and ferric chloride as a sensitizing salt. v
6. A photographic copying paper having on its Surface a light sensitive mixture consisting of leucomalachite green and mercuric chloride as a sensitizing salt.
'7. A process for making photographic prints comprising the steps of coating 9. paper with asolution comprising a. triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, drying the paper, recoating the coated surface of the paper with a solution comprising a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stanmc chloride, zinc chloride, and cupric sulfate, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
8. A process for making photographic prints comprising the steps of coating a paper with a solution comprising a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, drying the paper, recoating the coated surface of the paper with a solution comprising ferric chloride as the'sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
comprising the steps of coating a. paper with a solution comprising a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom, drying the paper, recoating the coated surface of the paper with a solution comprising mercuric chloride as the sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
10. A process for making photographic prints comprising the steps ofcoating a paper with a solution comprising leucomalachite green, drying the paper, recoating the coated surface of the paper with a solution comprising a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic chloride, zinc chloride, and cupric sulfate, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
11. A process for making photographic prints comprising the steps of coating a paper with a solution comprising a leucomalachite green, ingthe paper, recoating the coated surface of the paper with a solution comprising ferricchloride as the sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
12. A process for making photographic prints comprising the steps of coating a paper with a solution comprising a leucomalachite green, ying the paper, recoati'ng the coated surface of the paper with a solution comprising mercuric chloride as the sensitizing salt, redrying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
' 13. A process for making photographic prints comprising the steps or coating a paper with a solution comprising a triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom and a sensitizing salt selected from the group consisting of ferric chloride, mercuric chloride, mercuric acetate, stannic 0 chloride, zinc chloride, and cupric sulfate, drying 5 comprising thesteps of coating a paper with a 9. A process for making photographic prints solution comprising a triphenylmethane leuco 'base having at least two of the phenyl-nuclei substituted by amino groups in positions para to the methane carbon atom and ferric chloride as the sensitizing salt, drying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
15. A process for making photographic prints comprising the steps of coating a paper with a solution comprising a; triphenylmethane leuco base having at least two of the phenyl nuclei substituted by amino groups in positions para to the methane carbon atom and mecuric chloride as the sensitizing salt, drying the paper, exposing the sensitized and dried paper to light under a transparent pattern, and fixing the print with moist ammonia vapor.
- FRED W. BOUGH'IDN.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE442701D BE442701A (en) | 1940-10-09 | ||
US360444A US2324060A (en) | 1940-10-09 | 1940-10-09 | Photographic copying paper |
GB813/41A GB546637A (en) | 1940-10-09 | 1941-01-21 | Improvements in or relating to sensitive photographic materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US360444A US2324060A (en) | 1940-10-09 | 1940-10-09 | Photographic copying paper |
Publications (1)
Publication Number | Publication Date |
---|---|
US2324060A true US2324060A (en) | 1943-07-13 |
Family
ID=23417973
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US360444A Expired - Lifetime US2324060A (en) | 1940-10-09 | 1940-10-09 | Photographic copying paper |
Country Status (3)
Country | Link |
---|---|
US (1) | US2324060A (en) |
BE (1) | BE442701A (en) |
GB (1) | GB546637A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844465A (en) * | 1954-03-17 | 1958-07-22 | Chalkley Lyman | Photographic process |
US2978352A (en) * | 1957-07-25 | 1961-04-04 | Du Pont | Production of triarylmethane colors |
US3121632A (en) * | 1961-08-30 | 1964-02-18 | Horizons Inc | Photographic process and composition including leuco triphenylmethane dyes |
US3184308A (en) * | 1962-05-23 | 1965-05-18 | Meyer S Agruss | Process for treating leucocyanide dye images and product thereof |
US3408134A (en) * | 1963-04-22 | 1968-10-29 | American Optical Corp | Variable density light-filtering means utilizing stannous chloride and thiazine dye |
US3418128A (en) * | 1965-01-04 | 1968-12-24 | Dietzgen Co Eugene | Photosensitive compositions comprising acid addition salts of substituted leucocyanide triphenylmethane dyes and metal perchlorates |
WO1981001757A1 (en) * | 1979-12-07 | 1981-06-25 | Minnesota Mining & Mfg | Color imaging system |
WO1981001755A1 (en) * | 1979-12-07 | 1981-06-25 | Minnesota Mining & Mfg | Light sensitive,thermally developable imaging system |
US4370401A (en) * | 1979-12-07 | 1983-01-25 | Minnesota Mining And Manufacturing Company | Light sensitive, thermally developable imaging system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3140948A (en) * | 1961-10-18 | 1964-07-14 | Horizons Inc | Photography |
-
0
- BE BE442701D patent/BE442701A/xx unknown
-
1940
- 1940-10-09 US US360444A patent/US2324060A/en not_active Expired - Lifetime
-
1941
- 1941-01-21 GB GB813/41A patent/GB546637A/en not_active Expired
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2844465A (en) * | 1954-03-17 | 1958-07-22 | Chalkley Lyman | Photographic process |
US2978352A (en) * | 1957-07-25 | 1961-04-04 | Du Pont | Production of triarylmethane colors |
US3121632A (en) * | 1961-08-30 | 1964-02-18 | Horizons Inc | Photographic process and composition including leuco triphenylmethane dyes |
US3184308A (en) * | 1962-05-23 | 1965-05-18 | Meyer S Agruss | Process for treating leucocyanide dye images and product thereof |
US3408134A (en) * | 1963-04-22 | 1968-10-29 | American Optical Corp | Variable density light-filtering means utilizing stannous chloride and thiazine dye |
US3418128A (en) * | 1965-01-04 | 1968-12-24 | Dietzgen Co Eugene | Photosensitive compositions comprising acid addition salts of substituted leucocyanide triphenylmethane dyes and metal perchlorates |
WO1981001757A1 (en) * | 1979-12-07 | 1981-06-25 | Minnesota Mining & Mfg | Color imaging system |
WO1981001755A1 (en) * | 1979-12-07 | 1981-06-25 | Minnesota Mining & Mfg | Light sensitive,thermally developable imaging system |
US4370401A (en) * | 1979-12-07 | 1983-01-25 | Minnesota Mining And Manufacturing Company | Light sensitive, thermally developable imaging system |
Also Published As
Publication number | Publication date |
---|---|
GB546637A (en) | 1942-07-22 |
BE442701A (en) |
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