US2322005A - Photographic bleach-out layer - Google Patents
Photographic bleach-out layer Download PDFInfo
- Publication number
- US2322005A US2322005A US371684A US37168440A US2322005A US 2322005 A US2322005 A US 2322005A US 371684 A US371684 A US 371684A US 37168440 A US37168440 A US 37168440A US 2322005 A US2322005 A US 2322005A
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- US
- United States
- Prior art keywords
- dye
- dyes
- emulsion
- layer
- water
- 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
- 239000000975 dye Substances 0.000 description 40
- 239000000839 emulsion Substances 0.000 description 21
- 239000002904 solvent Substances 0.000 description 13
- 229910052709 silver Inorganic materials 0.000 description 12
- 239000004332 silver Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 238000009835 boiling Methods 0.000 description 7
- 239000006185 dispersion Substances 0.000 description 7
- 239000003960 organic solvent Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 6
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- -1 silver halide Chemical class 0.000 description 6
- 229910019142 PO4 Inorganic materials 0.000 description 5
- 239000010452 phosphate Substances 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 4
- 239000007864 aqueous solution Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 239000000084 colloidal system Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 108010010803 Gelatin Proteins 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000008273 gelatin Substances 0.000 description 2
- 229920000159 gelatin Polymers 0.000 description 2
- 235000019322 gelatine Nutrition 0.000 description 2
- 235000011852 gelatine desserts Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- AJDUTMFFZHIJEM-UHFFFAOYSA-N n-(9,10-dioxoanthracen-1-yl)-4-[4-[[4-[4-[(9,10-dioxoanthracen-1-yl)carbamoyl]phenyl]phenyl]diazenyl]phenyl]benzamide Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2NC(=O)C(C=C1)=CC=C1C(C=C1)=CC=C1N=NC(C=C1)=CC=C1C(C=C1)=CC=C1C(=O)NC1=CC=CC2=C1C(=O)C1=CC=CC=C1C2=O AJDUTMFFZHIJEM-UHFFFAOYSA-N 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- 239000003799 water insoluble solvent Substances 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 239000001043 yellow dye Substances 0.000 description 2
- RYCFRVNAZOREPC-UHFFFAOYSA-N 1,1,2-triphenylguanidine Chemical class C=1C=CC=CC=1N(C=1C=CC=CC=1)C(N)=NC1=CC=CC=C1 RYCFRVNAZOREPC-UHFFFAOYSA-N 0.000 description 1
- FKHNZQFCDGOQGV-UHFFFAOYSA-N 2,3-dimethylquinoxaline Chemical compound C1=CC=C2N=C(C)C(C)=NC2=C1 FKHNZQFCDGOQGV-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920001817 Agar Polymers 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 239000008272 agar Substances 0.000 description 1
- WLDHEUZGFKACJH-UHFFFAOYSA-K amaranth Chemical compound [Na+].[Na+].[Na+].C12=CC=C(S([O-])(=O)=O)C=C2C=C(S([O-])(=O)=O)C(O)=C1N=NC1=CC=C(S([O-])(=O)=O)C2=CC=CC=C12 WLDHEUZGFKACJH-UHFFFAOYSA-K 0.000 description 1
- 239000001000 anthraquinone dye Substances 0.000 description 1
- 239000000987 azo dye Substances 0.000 description 1
- CIZVQWNPBGYCGK-UHFFFAOYSA-N benzenediazonium Chemical group N#[N+]C1=CC=CC=C1 CIZVQWNPBGYCGK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000984 vat dye Substances 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
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
- G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
Definitions
- This invention relates to color photography and more particularly to the incorporation of dyes in silver halide emulsion layers to be subjected to bleaching for the formation of colored images.
- an object of the present invention to provide a method for incorporating bleachable dyes in silver halide emulsion layers.
- a further object is to provide a method for preventing diffusion of dyes from photographic layers in bleach-out processes.
- a still further object is to provide a means for securing dyed layers of adequate density in which the dyes are not subject to crystallization or diffusion.
- the sensitive material is composed of silver halide grains dispersed in a suitable water-soluble or water-permeable colloidal material such as gelatin, agar, polyvinyl phthalate or water-soluble cellulose esters.
- a suitable water-soluble or water-permeable colloidal material such as gelatin, agar, polyvinyl phthalate or water-soluble cellulose esters.
- the dye incorporated in this emulsion is dissolved in a second carrier which is immiscible with the colloidal material or carrier composing the layer and this second carrier containing the dye is added to the colloid of the sensitive layer in-the form of highly dispersed particles.
- the dye is dissolved in a low boiling organic solvent and a high boiling organic solvent is added to this solution. Both of these solvents must be substantially water-insoluble so that a dispersion of the mixture of dye and solvents in water'can be formed.
- the dye can be dissolved in the high boiling solvent alone since both the high boiling solvent and the low boiling solvents are solvents for the dye.
- the solution of dye in the solvent or solvents is emulsified in water containing a wetting agent or in a dilute gelatin solution to form a dispersion of the dye and the solvent or solvents in the aqueous solution.
- the low boiling solvent present is then preferably removed by heating and the dispersion added to the emulsion which is then coated on a suitable support.
- Dyes suitable for use in our process include azo I dyes capable of being bleached in the region of a silver image and soluble in organic solvents such as butyl acetate. Vat dyes such as anthraquinone dyes soluble in organic solvents may also be used.
- Example 1 0.05 gram of Oil Red 0 (Schultz, Farbstofftabellen, No. 92) was dissolved in 2.0 cc. of trio-cresyl phosphate and 3.0 cc. of butyl acetate. This solution was poured into 80cc. of water containing 0.2 g. of Gardinol WA and homogenized by circulating through a colloid mill. The butyl acetate was subsequently evaporated as described in the examples connected with bleachable filter dyes, and the final volume of cc. was diluted to cc. with water and added to cc.
- Example 2 The dispersion described in Example 1 was repeated using the same dye but without evaporation of the butyl acetate, and when tested under similar conditions was somewhat more coarse than the dispersion described in Example l, but otherwise showed very similar properties.
- Example 3 0.1 gram of the triphenyl guanidine salt of Alcol Fast Red 48L (sold by Modern Chemical Co., Canastota, N. Y.) was dissolved in 2.0 cc. of butyi acetate and 5.0 cc. of acetone, and 2.0 cc. of tri-o-cresyl phosphate. This solution was added t 85 cc.
- any suitable material such as cellulose ester or paper is coated with layers ll, l2 and I3 comprising gelatino-silver halide emulsion layers sensitive respectively to the red. green and blue. regions of the spectrum and having particles of dyes and water-insoluble solvent incorporated in the emulsion layers according to our invention.
- red sensitive emulsion layer a cyan dye may be used, for the green sensitive emulsion layer a magenta dye such as 011 Red 0 is suitable, and for the blue-sensitive layer a yellow dye such as benzene azo ,resorcinol may be used.
- magenta dye such as 011 Red 0
- yellow dye such as benzene azo ,resorcinol
- the particles of dye and water-insoluble solvent are only a few microns in diameter, although in the drawing they are enlarged with respect to the thickness of the emulsion layers for purposes of representation.
- the method of incorporating in a gelatinosilver halide layer a dye capable of being bleached in the region of a photographic image which comprises mixing the dye with a volatile substantially water-insoluble organic solvent for the dye and trlcresyl phosphate, emulsifying the dye and trlcresyl phosphate in an aqueous solution. dispersing the emulsion as liquid particles in the gelatino-silver halide emulsion and coating it on a support.
- the method of incorporating in a gelatino silver halide layer an azo dye capable of being bleached in the region of a silver image which comprises mixing the dye with butyl acetate and trlcresyl phosphate, emulsifying the solution of the dye and trlcresyl phosphate in an aqueous solution containing-a wetting agent, evaporating the butyl acetate and a portion of the water from the emulsion, adding the emulsion to the gelatino silver halide emulsion and coating it on a support;
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Description
June 15, 1943. s. s. FIERKE EI'AL 2,322,005
PHOTOGRAPHIG BLEACH-OUT LAYER Filed Dec. 26, 1940 ELuE SENSITIVE EMULSION CONTAIN/N6 DISPERSED YELLOW DYE PARTICLES.
DISPERSED CYAN DYE PARTICLES.
SUPPORT.
Jc'HEL/R/Nca 5. F/ERKE PAUL M V/TTL/M L. 07' 5., MLDER INVENTORS BY ;M
A TTORNEYS ?atented June 35. 1%43 iii a 2,322,005 PHOTOGRAPHIC BLEACH-OUT LAYER Scheuring S. Fierke, Paul W.
S. Wilder, Rochester, N. Y.,
Vittum, and not assignors to Eastman Kodak Company, Rochester, N. Y., a corporation of New Jersey Application December 26, 1940, Serial No. 371,684 in Great Britain December 29, 1939 2 Claims.
This invention relates to color photography and more particularly to the incorporation of dyes in silver halide emulsion layers to be subjected to bleaching for the formation of colored images.
Processes of color photography are well known in which dyes are incorporated in silver halide emulsion layers and after formation of silver images in the layers the dyes are bleached in the region of the silver images or in the region of silver halide images. One of the difliculties encountered in this process is that of securing adequate dye density in the layers without undesirable crystallization of the dyes or without diffusion of the dyes from the layers in which they are incorporated in multi-layer coatings.
It is, therefore, an object of the present invention to provide a method for incorporating bleachable dyes in silver halide emulsion layers. A further object is to provide a method for preventing diffusion of dyes from photographic layers in bleach-out processes. A still further object is to provide a means for securing dyed layers of adequate density in which the dyes are not subject to crystallization or diffusion. Other objects will appear from the following description of our invention.
- These objects are accomplished by dissolving the dye to be incorporated in the emulsion layer in one or more organic solvents each of which is substantially water-insoluble and at least one of which is high boiling. The solution of the dye in these solvents is then emulsified in an aqueous solution and is mixed with the sensitive emulsion.
In the accompanying drawing the single figure is a sectional view of a multi-layer photographic element having dyes incorporated in the emulsion layers according to our invention.
In the manufacture of bleach-out layers for color photography, the sensitive material is composed of silver halide grains dispersed in a suitable water-soluble or water-permeable colloidal material such as gelatin, agar, polyvinyl phthalate or water-soluble cellulose esters. The dye incorporated in this emulsion is dissolved in a second carrier which is immiscible with the colloidal material or carrier composing the layer and this second carrier containing the dye is added to the colloid of the sensitive layer in-the form of highly dispersed particles. By the proper selection of the carrier or solvent for the "dye. is possible to incorporate the necessary concentrations of dye in the desired high degree of dispersion and to have the dye in such physical state that it is incapable of diffusing from the layer in which it is incorporated. At the same time, the dye is held in a sufilciently loose state of physical combination with the. emulsions that it is available for chemical or physical reaction necessitated for bleaching to form a dye image in the layer. r
In the preferred embodiment of our invention the dye is dissolved in a low boiling organic solvent and a high boiling organic solvent is added to this solution. Both of these solvents must be substantially water-insoluble so that a dispersion of the mixture of dye and solvents in water'can be formed. In certain'cases the dye can be dissolved in the high boiling solvent alone since both the high boiling solvent and the low boiling solvents are solvents for the dye. The solution of dye in the solvent or solvents is emulsified in water containing a wetting agent or in a dilute gelatin solution to form a dispersion of the dye and the solvent or solvents in the aqueous solution. The low boiling solvent present is then preferably removed by heating and the dispersion added to the emulsion which is then coated on a suitable support.
Dyes suitable for use in our process include azo I dyes capable of being bleached in the region of a silver image and soluble in organic solvents such as butyl acetate. Vat dyes such as anthraquinone dyes soluble in organic solvents may also be used.
The following examples, which are illustrative only, indicate methods of incorporating dyes in emulsion layers according to our invention:
Example 1 0.05 gram of Oil Red 0 (Schultz, Farbstofftabellen, No. 92) was dissolved in 2.0 cc. of trio-cresyl phosphate and 3.0 cc. of butyl acetate. This solution was poured into 80cc. of water containing 0.2 g. of Gardinol WA and homogenized by circulating through a colloid mill. The butyl acetate was subsequently evaporated as described in the examples connected with bleachable filter dyes, and the final volume of cc. was diluted to cc. with water and added to cc.
of a moderate-speed high-contrast positive-type emulsion. Plates were coated. Using a hydrochloric acid bleach bath described below the bleaching was satisfactory, although slightly incomplete in the highlights.
Bleach bath. Hydrochloric acid (concentrated) cc 100.0 Sodium chloride gms 100.0 Potassium bromide --gms 30.0 Dimethyl quinoxaline -gln 0.3 Oxyaminophenazine -gm..- 0.02 Waterto cc 1000.00
Example 2 The dispersion described in Example 1 was repeated using the same dye but without evaporation of the butyl acetate, and when tested under similar conditions was somewhat more coarse than the dispersion described in Example l, but otherwise showed very similar properties. Example 3 0.1 gram of the triphenyl guanidine salt of Alcol Fast Red 48L (sold by Modern Chemical Co., Canastota, N. Y.) was dissolved in 2.0 cc. of butyi acetate and 5.0 cc. of acetone, and 2.0 cc. of tri-o-cresyl phosphate. This solution was added t 85 cc. of water containing 0.2 gram of Gardinol WA, and was homogenized by circulating through a colloid mill. The lowboiling organic solvents were evaporated from the resulting dispersion until the total volume was 60 cc. This also removed a very appreciable quantity of water in attempting to drive off the the support It or any suitable material such as cellulose ester or paper is coated with layers ll, l2 and I3 comprising gelatino-silver halide emulsion layers sensitive respectively to the red. green and blue. regions of the spectrum and having particles of dyes and water-insoluble solvent incorporated in the emulsion layers according to our invention. For the red sensitive emulsion layer a cyan dye may be used, for the green sensitive emulsion layer a magenta dye such as 011 Red 0 is suitable, and for the blue-sensitive layer a yellow dye such as benzene azo ,resorcinol may be used. The particles of dye and water-insoluble solvent are only a few microns in diameter, although in the drawing they are enlarged with respect to the thickness of the emulsion layers for purposes of representation.
The examples and compounds described in the present specification are illustrative only and it is to be understood that our invention is limited only by the scope of the appended claims.
We claim:
1. The method of incorporating in a gelatinosilver halide layer a dye capable of being bleached in the region of a photographic image, which comprises mixing the dye with a volatile substantially water-insoluble organic solvent for the dye and trlcresyl phosphate, emulsifying the dye and trlcresyl phosphate in an aqueous solution. dispersing the emulsion as liquid particles in the gelatino-silver halide emulsion and coating it on a support.
2. The method of incorporating in a gelatino silver halide layer an azo dye capable of being bleached in the region of a silver image which comprises mixing the dye with butyl acetate and trlcresyl phosphate, emulsifying the solution of the dye and trlcresyl phosphate in an aqueous solution containing-a wetting agent, evaporating the butyl acetate and a portion of the water from the emulsion, adding the emulsion to the gelatino silver halide emulsion and coating it on a support;
SCHEURING S. FIERKE. PAUL W. VIT'I'UM. LOT S. WILDER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2322005X | 1939-12-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2322005A true US2322005A (en) | 1943-06-15 |
Family
ID=10903809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US371684A Expired - Lifetime US2322005A (en) | 1939-12-29 | 1940-12-26 | Photographic bleach-out layer |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2322005A (en) |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2500422A (en) * | 1946-05-08 | 1950-03-14 | Polaroid Corp | Photographic product |
| US2525720A (en) * | 1947-01-09 | 1950-10-10 | Polaroid Corp | Photographic product |
| US2543181A (en) * | 1947-01-15 | 1951-02-27 | Polaroid Corp | Photographic product comprising a rupturable container carrying a photographic processing liquid |
| US2559643A (en) * | 1948-02-19 | 1951-07-10 | Polaroid Corp | Photographic product and process |
| US2565377A (en) * | 1950-06-13 | 1951-08-21 | Polaroid Corp | Hinged photographic film unit containing a liquid |
| US2572357A (en) * | 1945-07-13 | 1951-10-23 | Polaroid Corp | Photographic product comprising a fluid processing agent and apparatus for use in connection therewith |
| US2572358A (en) * | 1950-07-15 | 1951-10-23 | Polaroid Corp | Multilayer photographic film unit containing a liquid and having one layer movable with respect to another layer |
| US2584029A (en) * | 1946-04-13 | 1952-01-29 | Polaroid Corp | Photographic silver transfer product and process, including a lead salt |
| US2607685A (en) * | 1946-10-03 | 1952-08-19 | Polaroid Corp | Photographic product comprising a plurality of rupturable containers, each carrying a liquid for processing said product |
| US2609296A (en) * | 1945-05-21 | 1952-09-02 | Polaroid Corp | Composite photographic product comprising a photosensitive element and a container carrying a liquid for processing said element |
| US2612450A (en) * | 1946-01-17 | 1952-09-30 | Polaroid Corp | Self-framing photographic film unit containing a liquid, and process for producing framed positive images |
| US2612451A (en) * | 1946-11-29 | 1952-09-30 | Polaroid Corp | Photographic product, including a container and means for rupturing said container |
| US2616804A (en) * | 1945-08-13 | 1952-11-04 | Polaroid Corp | Sheet material containing a liquid for processing a silver halide layer |
| US2616805A (en) * | 1946-02-21 | 1952-11-04 | Polaroid Corp | Photographic film assembly comprising a photosensitive layer and another layer hingedly connected together |
| US2639233A (en) * | 1944-06-09 | 1953-05-19 | Polaroid Corp | Photographic product for forming a transfer image |
| US2644755A (en) * | 1947-12-09 | 1953-07-07 | Polaroid Corp | Photographic product for carrying out a one-step photographic process |
| US2647055A (en) * | 1946-11-06 | 1953-07-28 | Polaroid Corp | Photographic product and process for forming a white image viewable against a dark background |
| US2659673A (en) * | 1948-02-03 | 1953-11-17 | Polaroid Corp | Photographic product containing a strippable mask |
| US3244518A (en) * | 1960-05-19 | 1966-04-05 | Gen Aniline & Film Corp | Process for obtaining multicolor images and a multilayer sheet for use therein |
| US4163671A (en) * | 1977-04-25 | 1979-08-07 | Fuji Photo Film Co., Ltd. | Silver halide photographic material containing ultraviolet light absorbing agent |
| US4195999A (en) * | 1977-04-15 | 1980-04-01 | Fuji Photo Film Co., Ltd. | Silver halide photographic material containing ultraviolet light absorbing agent |
-
1940
- 1940-12-26 US US371684A patent/US2322005A/en not_active Expired - Lifetime
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2639233A (en) * | 1944-06-09 | 1953-05-19 | Polaroid Corp | Photographic product for forming a transfer image |
| US2609296A (en) * | 1945-05-21 | 1952-09-02 | Polaroid Corp | Composite photographic product comprising a photosensitive element and a container carrying a liquid for processing said element |
| US2572357A (en) * | 1945-07-13 | 1951-10-23 | Polaroid Corp | Photographic product comprising a fluid processing agent and apparatus for use in connection therewith |
| US2616804A (en) * | 1945-08-13 | 1952-11-04 | Polaroid Corp | Sheet material containing a liquid for processing a silver halide layer |
| US2612450A (en) * | 1946-01-17 | 1952-09-30 | Polaroid Corp | Self-framing photographic film unit containing a liquid, and process for producing framed positive images |
| US2616805A (en) * | 1946-02-21 | 1952-11-04 | Polaroid Corp | Photographic film assembly comprising a photosensitive layer and another layer hingedly connected together |
| US2584029A (en) * | 1946-04-13 | 1952-01-29 | Polaroid Corp | Photographic silver transfer product and process, including a lead salt |
| US2500422A (en) * | 1946-05-08 | 1950-03-14 | Polaroid Corp | Photographic product |
| US2607685A (en) * | 1946-10-03 | 1952-08-19 | Polaroid Corp | Photographic product comprising a plurality of rupturable containers, each carrying a liquid for processing said product |
| US2647055A (en) * | 1946-11-06 | 1953-07-28 | Polaroid Corp | Photographic product and process for forming a white image viewable against a dark background |
| US2612451A (en) * | 1946-11-29 | 1952-09-30 | Polaroid Corp | Photographic product, including a container and means for rupturing said container |
| US2525720A (en) * | 1947-01-09 | 1950-10-10 | Polaroid Corp | Photographic product |
| US2543181A (en) * | 1947-01-15 | 1951-02-27 | Polaroid Corp | Photographic product comprising a rupturable container carrying a photographic processing liquid |
| US2644755A (en) * | 1947-12-09 | 1953-07-07 | Polaroid Corp | Photographic product for carrying out a one-step photographic process |
| US2659673A (en) * | 1948-02-03 | 1953-11-17 | Polaroid Corp | Photographic product containing a strippable mask |
| US2559643A (en) * | 1948-02-19 | 1951-07-10 | Polaroid Corp | Photographic product and process |
| US2565377A (en) * | 1950-06-13 | 1951-08-21 | Polaroid Corp | Hinged photographic film unit containing a liquid |
| US2572358A (en) * | 1950-07-15 | 1951-10-23 | Polaroid Corp | Multilayer photographic film unit containing a liquid and having one layer movable with respect to another layer |
| US3244518A (en) * | 1960-05-19 | 1966-04-05 | Gen Aniline & Film Corp | Process for obtaining multicolor images and a multilayer sheet for use therein |
| US4195999A (en) * | 1977-04-15 | 1980-04-01 | Fuji Photo Film Co., Ltd. | Silver halide photographic material containing ultraviolet light absorbing agent |
| US4163671A (en) * | 1977-04-25 | 1979-08-07 | Fuji Photo Film Co., Ltd. | Silver halide photographic material containing ultraviolet light absorbing agent |
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