US3520689A - Color developing process utilizing pyridinium salts - Google Patents
Color developing process utilizing pyridinium salts Download PDFInfo
- Publication number
- US3520689A US3520689A US557610A US3520689DA US3520689A US 3520689 A US3520689 A US 3520689A US 557610 A US557610 A US 557610A US 3520689D A US3520689D A US 3520689DA US 3520689 A US3520689 A US 3520689A
- Authority
- US
- United States
- Prior art keywords
- color
- developer
- silver
- developing
- aminophenol
- 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
- 238000000034 method Methods 0.000 title description 13
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 title description 7
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 23
- 238000004061 bleaching Methods 0.000 description 17
- 229910052709 silver Inorganic materials 0.000 description 16
- 239000004332 silver Substances 0.000 description 16
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 15
- 238000011109 contamination Methods 0.000 description 15
- 150000001875 compounds Chemical class 0.000 description 13
- 238000012545 processing Methods 0.000 description 13
- 229910052708 sodium Inorganic materials 0.000 description 12
- 239000011734 sodium Substances 0.000 description 12
- 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 11
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 11
- 229910052700 potassium Inorganic materials 0.000 description 11
- 239000011591 potassium Substances 0.000 description 11
- 150000001767 cationic compounds Chemical class 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- ZFIQGRISGKSVAG-UHFFFAOYSA-N 4-methylaminophenol Chemical compound CNC1=CC=C(O)C=C1 ZFIQGRISGKSVAG-UHFFFAOYSA-N 0.000 description 6
- 125000000217 alkyl group Chemical group 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- ZUNKMNLKJXRCDM-UHFFFAOYSA-N silver bromoiodide Chemical compound [Ag].IBr ZUNKMNLKJXRCDM-UHFFFAOYSA-N 0.000 description 5
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229920002301 cellulose acetate Polymers 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- -1 silver halide Chemical class 0.000 description 3
- AEEZXQFUVDKVFT-UHFFFAOYSA-N 2-(benzylamino)phenol Chemical compound OC1=CC=CC=C1NCC1=CC=CC=C1 AEEZXQFUVDKVFT-UHFFFAOYSA-N 0.000 description 2
- SRYYOKKLTBRLHT-UHFFFAOYSA-N 4-(benzylamino)phenol Chemical compound C1=CC(O)=CC=C1NCC1=CC=CC=C1 SRYYOKKLTBRLHT-UHFFFAOYSA-N 0.000 description 2
- 229940126062 Compound A Drugs 0.000 description 2
- NLDMNSXOCDLTTB-UHFFFAOYSA-N Heterophylliin A Natural products O1C2COC(=O)C3=CC(O)=C(O)C(O)=C3C3=C(O)C(O)=C(O)C=C3C(=O)OC2C(OC(=O)C=2C=C(O)C(O)=C(O)C=2)C(O)C1OC(=O)C1=CC(O)=C(O)C(O)=C1 NLDMNSXOCDLTTB-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- VPMMJSPGZSFEAH-UHFFFAOYSA-N 2,4-diaminophenol;hydrochloride Chemical compound [Cl-].NC1=CC=C(O)C([NH3+])=C1 VPMMJSPGZSFEAH-UHFFFAOYSA-N 0.000 description 1
- CDAWCLOXVUBKRW-UHFFFAOYSA-N 2-aminophenol Chemical class NC1=CC=CC=C1O CDAWCLOXVUBKRW-UHFFFAOYSA-N 0.000 description 1
- XBTWVJKPQPQTDW-UHFFFAOYSA-N 4-n,4-n-diethyl-2-methylbenzene-1,4-diamine Chemical compound CCN(CC)C1=CC=C(N)C(C)=C1 XBTWVJKPQPQTDW-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 235000014443 Pyrus communis Nutrition 0.000 description 1
- VXVXRJJWYPVNLM-UHFFFAOYSA-N [2-(methylamino)phenyl] hydrogen sulfate Chemical compound CNC1=CC=CC=C1OS(O)(=O)=O VXVXRJJWYPVNLM-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000006367 bivalent amino carbonyl group Chemical group [H]N([*:1])C([*:2])=O 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000004682 monohydrates Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-O pyridinium Chemical compound C1=CC=[NH+]C=C1 JUJWROOIHBZHMG-UHFFFAOYSA-O 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 125000004417 unsaturated alkyl group Chemical group 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/06—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom
- C07D213/16—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom containing only hydrogen and carbon atoms in addition to the ring nitrogen atom containing only one pyridine ring
- C07D213/20—Quaternary compounds thereof
-
- 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
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/407—Development processes or agents therefor
- G03C7/413—Developers
Definitions
- An improved color developer is prepared by combining a p-phenylene diamine with (A) a cationic compound selected from the group consisting of a cationic compound having a pyridinium group represented by the general formula and a cationic compound having the pyridinium group represented by the general formula:
- A represents an atomic group consisting of a methylene chain and a group selected from O, --NHCO-, and OCO
- B represents a member selected from a saturated alkyl group, an unsaturated alkyl group and a hydrogen atom
- R and R represent a member selected from a hydrogen atom and an alkyl group having 1 to 5 carbon atoms
- X- represents a member selected from 2C1, 2Br-, SO and 2ClO
- Y- represents a member selected from Cl", Br, and C 1 and (B) at least one member selected from a group consisting of N-methyl-p-aminophenol, o,p-diamino phenol, N-benzyl-p-aminophenol and p-aminophenol.
- the present invention relates generally to a color developing process for a silver halide color photographic element and more particularly to a color developing process using a cationic compound of a pyridinium salt type and p-aminophenol or its derivatives thereof to promote the color developing, reducing the deficiency in silver bleaching and color contamination while improving picture quality.
- the presence of the developing accelerator in a bleaching process for developed silver after the color development frequently reduce the oxidation speed of silver, that is, causes the phenomenon of co-called insuflicient silver bleaching.
- an object of the present invention is to accelerate the color developing speed and increase the color density.
- Another object of the present invention is to improve the silver-bleaching in color photographic processing.
- Still a further object of the present invention is to reduce or prevent the contamination or color contamination in color photography.
- pyridinium-type cationic compounds to be used in the present invention may be represented by the following general formulas:
- the p-aminophenol derivatives used in the present invention are N-methylaminophenol sulfate metol), o,pdiaminophenol hydrochloride (amidol), and N-benzyl-paminophenol. Although the effect may be slightly less than those of the above-mentioned aminophenol derivatives, p-arninophenol may be also used in this invention. In this respect, it must be understood that the use of p-aminophenol or its derivatives among black and white developing agents is important in this invention since the use of other black and white developing agents together with the abovementioned developing accelerators increases, on the contrary, the contamination or color contamination.
- a suitable amount of p-aminophenol or its derivatives thereof to be added in the developer is 0.1 to 1 g./l.
- the amount may be less or higher than the range but if the amount is less than 0.1 g./l. the effect of the addition thereof becomes insufficient and if higher than 1 -g./l. the color density tends to be reduced on the contrary.
- Two or more kinds of the above-mentioned p-aminophenol and its derivatives thereof may be used in this invention.
- the present invention may be generally applied to color photographic materials using a color developer containing p-phenylenediamine or its derivatives thereof, such as color negative films, photographic color papers, photographic color reversal films and the like.
- a color developer containing p-phenylenediamine or its derivatives thereof such as color negative films, photographic color papers, photographic color reversal films and the like.
- the most effective results of this invention can be obtained in the case of conducting this invention about a yellow color developer for photographic color reversal film having technical difiiculties in silver bleaching and color contamination.
- EXAMPLE 1 A test sample which had been prepared by applying a blue-sensitive gelatino silver bromo-iodide emulsion to a cellulose acetate film was exposed by means of a sensitometer and subjected to the following processings:
- compositions of the processing baths were as follows:
- the color density and the silver-bleaching elfect were measured in this processing as about the same as when using the pyridinium compounds, the p-aminophenol derivatives or both, the results of which are shown in Table 1.
- the color density is shown by the value by measuring the maximum density range of thus processed film using a blue filter light and the silver bleaching effect is shown by the value of the blackened density (D by the remaining silver measured by using a red filter light divided by the color density value (D obtained from measuring by using a blue filter light.
- EXAMPLE 2 To a cellulose acetate film were applied a red-sensitive gelatino silver bromo-iodide emulsion, a green-sensitive gelatino silverbromo-iodide emulsion, a yellow filter layer composed of colloidal silver for absorbing blue light, and a blue-sensitive silver bromo-iodide emulsion in the order to provide a multilayer color photographic film, which was exposed using a sensitometer and subjected to the following processings:
- compositions of the first developer and the second black and white developer were the same as the composition of the first developer in Example 1.
- Other compositions of the processing solutions were as follows:
- the composition of the yellow developer was same as that of the color developer in Example 1.
- compositions of the bleaching solution and the fixing solution were the same as those in Example 1.
- the effect of the addition of the compounds of this invention to the yellow color developer in the above processings is shown in Table 2.
- the color density (D ) was measured by a blue filter light.
- the silver bleaching was measured about samples exposed to yellow patch.
- the color contamination (1) shows the ratio of the color density (D obtained by measuring with green filter light a sample exposed to yellow patch to the color density (D obtained by measuring it with blue filter light, that is, the ratio of unnecessary magenta color components in the yellow image
- the color contamination (2) shows the ratio of the color density (D obtained by measuring with blue filter light a sample exposed to magenta patch to the color density (D- obtained by measuring it with green filter light, that is, the ratio of unnecessary yellow components in the magenta image.
- EXAMPLE 4 A gelatino silver bromo-iodide emulsion containing a yellow coupler was applied to a cellulose acetate film to provide a test sample, which was exposed by means of a NSG sensitorneter and then subjected to the following processings:
- compositions of the processing solutions were as follows:
- Fixing solution (first) Sodium sulfiteg. Sodium thiosulfate-ISO g. Acetic acid (28% )-48 ml. Boric acid-7 g. Potassium alum15 g. Water to make 1 liter.
- a color developing process for color photographic silver halide materials using a color developer containing a member selected from the group consisting of p-phenylenediamine and the derivatives thereof the improvement which comprises using said color developer having added therein -(A) a member selected from the group consisting of a'cationic compound having the pyridinium group represented by the general formula and a cationic compound having the pyridinium group represented by the general formula wherein A represents an atomic group consisting of a methylene chain and a group selected from O--, NHCO-, and- OCO-; B represents a member selected from a saturated alkyl group, an unsaturted alkyl group and a hydrogen atom; R and R represent a member selected from a hydrogen atom and an alkyl group having 1 to 5 carbon atoms; X- represents a member selected from 2Cl*, 2Br, 80.;- and 200;; and Y- represents a member selected from Ch, Br" and 010 and (
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3583565 | 1965-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3520689A true US3520689A (en) | 1970-07-14 |
Family
ID=12453011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US557610A Expired - Lifetime US3520689A (en) | 1965-06-16 | 1966-06-15 | Color developing process utilizing pyridinium salts |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3520689A (de) |
| BE (1) | BE682559A (de) |
| DE (1) | DE1547844A1 (de) |
| GB (1) | GB1112538A (de) |
Cited By (41)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893862A (en) * | 1973-09-24 | 1975-07-08 | Eastman Kodak Co | Reduced pyridine compounds |
| US4135931A (en) * | 1976-08-27 | 1979-01-23 | Fuji Photo Film Co., Ltd. | Method of image formation |
| US4558000A (en) * | 1983-03-16 | 1985-12-10 | Fuji Photo Film Co., Ltd. | Color reversal light-sensitive material |
| US6124082A (en) * | 1997-01-30 | 2000-09-26 | Applied Science Fiction, Inc. | System and method for latent film recovery in electronic film development |
| US20010030685A1 (en) * | 1999-12-30 | 2001-10-18 | Darbin Stephen P. | Method and apparatus for digital film processing using a scanning station having a single sensor |
| US20010031084A1 (en) * | 1999-12-17 | 2001-10-18 | Cannata Philip E. | Method and system for selective enhancement of image data |
| US20010040701A1 (en) * | 2000-02-03 | 2001-11-15 | Edgar Albert D. | Photographic film having time resolved sensitivity distinction |
| US20010043755A1 (en) * | 2000-02-03 | 2001-11-22 | Edgar Albert D. | Match blur system and method |
| US20020051215A1 (en) * | 1999-12-30 | 2002-05-02 | Thering Michael R. | Methods and apparatus for transporting and positioning film in a digital film processing system |
| US20020080409A1 (en) * | 1999-12-31 | 2002-06-27 | Keyes Michael P. | Digital film processing method |
| US6439784B1 (en) | 1999-08-17 | 2002-08-27 | Applied Science Fiction, Inc. | Method and system for using calibration patches in electronic film processing |
| US20020118402A1 (en) * | 2000-09-19 | 2002-08-29 | Shaw Timothy C. | Film bridge for digital film scanning system |
| US6443639B1 (en) * | 1999-06-29 | 2002-09-03 | Applied Science Fiction, Inc. | Slot coater device for applying developer to film for electronic film development |
| US6447178B2 (en) | 1999-12-30 | 2002-09-10 | Applied Science Fiction, Inc. | System, method, and apparatus for providing multiple extrusion widths |
| US20020126327A1 (en) * | 2000-09-21 | 2002-09-12 | Edgar Albert D. | Method and system for improving scanned image detail |
| US6461061B2 (en) | 1999-12-30 | 2002-10-08 | Applied Science Fiction, Inc. | System and method for digital film development using visible light |
| US20020146171A1 (en) * | 2000-10-01 | 2002-10-10 | Applied Science Fiction, Inc. | Method, apparatus and system for black segment detection |
| US6475711B1 (en) | 1999-12-31 | 2002-11-05 | Applied Science Fiction, Inc. | Photographic element and digital film processing method using same |
| US6503002B1 (en) | 1996-12-05 | 2003-01-07 | Applied Science Fiction, Inc. | Method and apparatus for reducing noise in electronic film development |
| US6505977B2 (en) | 1999-12-30 | 2003-01-14 | Applied Science Fiction, Inc. | System and method for digital color dye film processing |
| US6512601B1 (en) | 1998-02-23 | 2003-01-28 | Applied Science Fiction, Inc. | Progressive area scan in electronic film development |
| US6540416B2 (en) | 1999-12-30 | 2003-04-01 | Applied Science Fiction, Inc. | System and method for digital film development using visible light |
| US6554504B2 (en) | 1999-12-30 | 2003-04-29 | Applied Science Fiction, Inc. | Distributed digital film processing system and method |
| US6594041B1 (en) | 1998-11-20 | 2003-07-15 | Applied Science Fiction, Inc. | Log time processing and stitching system |
| US20030133710A1 (en) * | 2001-07-16 | 2003-07-17 | Winberg Paul N. | System and method for digital film development using visible light |
| US6599036B2 (en) | 2000-02-03 | 2003-07-29 | Applied Science Fiction, Inc. | Film processing solution cartridge and method for developing and digitizing film |
| US6619863B2 (en) | 2000-02-03 | 2003-09-16 | Eastman Kodak Company | Method and system for capturing film images |
| US20040047585A1 (en) * | 2000-12-05 | 2004-03-11 | Duong Dung T. | Light transfer device and system |
| US6707557B2 (en) | 1999-12-30 | 2004-03-16 | Eastman Kodak Company | Method and system for estimating sensor dark current drift and sensor/illumination non-uniformities |
| US6733960B2 (en) | 2001-02-09 | 2004-05-11 | Eastman Kodak Company | Digital film processing solutions and method of digital film processing |
| US6781620B1 (en) | 1999-03-16 | 2004-08-24 | Eastman Kodak Company | Mixed-element stitching and noise reduction system |
| US6786655B2 (en) | 2000-02-03 | 2004-09-07 | Eastman Kodak Company | Method and system for self-service film processing |
| US6788335B2 (en) | 1999-12-30 | 2004-09-07 | Eastman Kodak Company | Pulsed illumination signal modulation control & adjustment method and system |
| US6813392B2 (en) | 1999-12-30 | 2004-11-02 | Eastman Kodak Company | Method and apparatus for aligning multiple scans of the same area of a medium using mathematical correlation |
| US6864973B2 (en) | 1999-12-30 | 2005-03-08 | Eastman Kodak Company | Method and apparatus to pre-scan and pre-treat film for improved digital film processing handling |
| US6943920B2 (en) | 2000-02-03 | 2005-09-13 | Eastman Kodak Company | Method, system, and software for signal processing using pyramidal decomposition |
| US6965692B1 (en) | 1999-12-30 | 2005-11-15 | Eastman Kodak Company | Method and apparatus for improving the quality of reconstructed information |
| US6990251B2 (en) | 2000-02-03 | 2006-01-24 | Eastman Kodak Company | Method, system, and software for signal processing using sheep and shepherd artifacts |
| US20060182337A1 (en) * | 2000-06-28 | 2006-08-17 | Ford Benjamin C | Method and apparatus for improving the quality of reconstructed information |
| US20060192857A1 (en) * | 2004-02-13 | 2006-08-31 | Sony Corporation | Image processing device, image processing method, and program |
| US7263240B2 (en) | 2002-01-14 | 2007-08-28 | Eastman Kodak Company | Method, system, and software for improving signal quality using pyramidal decomposition |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3813244A (en) * | 1972-07-24 | 1974-05-28 | Eastman Kodak Co | 'onium indo-n-arylsulfoaniline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2648604A (en) * | 1951-12-28 | 1953-08-11 | Gen Aniline & Film Corp | Photographic developer containing a pyridinium salt and process of development |
| US3062645A (en) * | 1957-11-27 | 1962-11-06 | Eastman Kodak Co | Sensitization of photographic emulsions to be developed with p-phenylenediamine developing agents |
| US3300305A (en) * | 1962-10-25 | 1967-01-24 | Eastman Kodak Co | Color developers containing competing developing agents |
-
1966
- 1966-06-15 US US557610A patent/US3520689A/en not_active Expired - Lifetime
- 1966-06-15 GB GB26733/66A patent/GB1112538A/en not_active Expired
- 1966-06-15 BE BE682559D patent/BE682559A/xx unknown
- 1966-06-16 DE DE19661547844 patent/DE1547844A1/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2648604A (en) * | 1951-12-28 | 1953-08-11 | Gen Aniline & Film Corp | Photographic developer containing a pyridinium salt and process of development |
| US3062645A (en) * | 1957-11-27 | 1962-11-06 | Eastman Kodak Co | Sensitization of photographic emulsions to be developed with p-phenylenediamine developing agents |
| US3300305A (en) * | 1962-10-25 | 1967-01-24 | Eastman Kodak Co | Color developers containing competing developing agents |
Cited By (61)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3893862A (en) * | 1973-09-24 | 1975-07-08 | Eastman Kodak Co | Reduced pyridine compounds |
| US4135931A (en) * | 1976-08-27 | 1979-01-23 | Fuji Photo Film Co., Ltd. | Method of image formation |
| US4558000A (en) * | 1983-03-16 | 1985-12-10 | Fuji Photo Film Co., Ltd. | Color reversal light-sensitive material |
| US6503002B1 (en) | 1996-12-05 | 2003-01-07 | Applied Science Fiction, Inc. | Method and apparatus for reducing noise in electronic film development |
| US6124082A (en) * | 1997-01-30 | 2000-09-26 | Applied Science Fiction, Inc. | System and method for latent film recovery in electronic film development |
| US6558052B2 (en) | 1997-01-30 | 2003-05-06 | Applied Science Fiction, Inc. | System and method for latent film recovery in electronic film development |
| US6512601B1 (en) | 1998-02-23 | 2003-01-28 | Applied Science Fiction, Inc. | Progressive area scan in electronic film development |
| US6594041B1 (en) | 1998-11-20 | 2003-07-15 | Applied Science Fiction, Inc. | Log time processing and stitching system |
| US6781620B1 (en) | 1999-03-16 | 2004-08-24 | Eastman Kodak Company | Mixed-element stitching and noise reduction system |
| US6443639B1 (en) * | 1999-06-29 | 2002-09-03 | Applied Science Fiction, Inc. | Slot coater device for applying developer to film for electronic film development |
| US6439784B1 (en) | 1999-08-17 | 2002-08-27 | Applied Science Fiction, Inc. | Method and system for using calibration patches in electronic film processing |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE1547844A1 (de) | 1970-02-19 |
| BE682559A (de) | 1966-11-14 |
| GB1112538A (en) | 1968-05-08 |
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