US3110595A - Apparatus and method for treating photographic products in a single bath - Google Patents

Apparatus and method for treating photographic products in a single bath Download PDF

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Publication number
US3110595A
US3110595A US801129A US80112959A US3110595A US 3110595 A US3110595 A US 3110595A US 801129 A US801129 A US 801129A US 80112959 A US80112959 A US 80112959A US 3110595 A US3110595 A US 3110595A
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United States
Prior art keywords
zone
processing
solution
fixing
developing
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Expired - Lifetime
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US801129A
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English (en)
Inventor
Roman Pierre Amedee
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
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Eastman Kodak Co
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Publication date
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    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/38—Fixing; Developing-fixing; Hardening-fixing
    • G03C5/383—Developing-fixing, i.e. mono-baths
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/08—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material
    • G03D3/13—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly
    • G03D3/132—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly fed by roller assembly

Definitions

  • This invention relates generally to processing systems, and more specifically to an improved apparatus and method for processing photographic paper in a single developer-fixer bath;
  • one of the primary objects of the present invention is to provide a method for processing photographic papers in a single developer-fixer bath in which the contrast of the photographic paper is improved over the contrast secured when the paper is processed by any prior known type of method.
  • Another object of this invention is the provision of an improved method for processing photographic paper in a single developer-fixer bath for achieving an improvement in the degree of separation and control of the developing and fixing actions.
  • Still another object of the invention is to provide an improved method for processing photographic paper in a single developer-fixer bath for obtaining improved contrast under conditions where the normal fixing rate is too rapid, nad reduces the minimum density where the normal fixing rate is too slow.
  • One more object of the invention is toprovide an improved method for processing photographic paper in a single developer-fixer bath in which the photographic paper is subjected to the action of the bath for a predetermined time interval during which the bath is unagitated, and then to the action of the same bath for a different predetermined time interval during which the bath is agitated.
  • Still another object of this invention is to provide an improved method for processing photographic paper in a single developer-fixer bath in which the photographic paper is passed through a first zone in which the bath is substantially unagitated and then passed through a second zone in which the bath is agitated.
  • Another object of the invention is to provide an apparatus for carrying out this new method of processing photographic paper in a single developer-fixer bath and including adjacent hydraulically connected chambers for holding the bath, and means for agitating the bath in one of the chambers without materially agitating the bath in the other chamber.
  • FIG. 1 is a side elevation view in section showing a preferred embodiment of the processing apparatus of this invention.
  • FIG. 2 is a view substantially taken along line 2-2 of FIG. 1.
  • the processing apparatus comprises a tank 5 having a pair of spaced apart, semicircular side plates 3 joined together by a semi-cylindrical plate 4 forming the bottom of tank 5.
  • the tank 5 is provided with any suitable type of support member shown as legs 6, each formed of angle iron and having one end secured to the bottom of tank 5, and the opposite end secured to any suitable support base by screws 7.
  • the side plates 3 are further connected together by an upper plate 8 secured thereto by welding or any other suitable way.
  • the upper plate 8 has a quarter-cylindrical portion 9 as seen in FIG. 1 spaced apart from and concentric to bottom plate 4, and a substantially vertical planar portion 11 having one end connected to portion 9.
  • the portion 11 of plate 8, side plates 3, and bottom plate 4 of tank 5 cooperate to form a chamber 13 of relatively large capacity hydraulically connected to chamber 12.
  • An agitating device such as any commercially available vibrator is provided having a rectangularly shaped agitating-element 14 disposed in chamber 13 and connected to a rotatably driven rod 15.
  • the tank 5 is provided with a combination of developer and fixing solution 19 which is distributed throughout the two chambers 12,13;
  • the agitating element 14 is initially operated so that the portion of solution 19 which is contained in chamber 13 is continuously agitated without substantially aifecting the turbulence of that portion of solution 19 in chamber 12.
  • the material 16 to be processed is passed by rollers 17 into the substantially unagitated portion of solution 19 contained in chamber 12 where development principally takes place, and then into the agitated portion of solution 19 contained in chamber 13 where fixing takes place and the processing step is carried to completion.
  • the material 16 is removed from tank 5 by rollers 18.
  • the agitation created by agitating element 14 in chamber 13 is not transmitted to that portion of the developer-fixer solution 19 contained in chamber 12.
  • the small capacity of chamber 12 does not adversely affect the development since a silver chloride emulsion or other rapidly developing emulsion is developed completely in the presence of a small quantity of developer because only a small amount thereof is necessary to the swelling of the gelatin.
  • the time in which the material 16 passes through the machine varies somewhat, depending upon the characteristics of the product to be treated and the conditions of treatment. Under the particular conditions indicated in the following examples, about 30 seconds are required for the processing, and the material reaches chamber 13 of the machine where solution 19 is agitated about 15 seconds after entering chamber 12.
  • Example 1 G Sodium carbonate 30 Sodium sulfate 25 Ascorbic acid; 10 l-phenyl-3-pyrazolidone 1 Potassium bromide 1 Sodium thiosulfate 25 5-phenyl-l-mercaptotetrazole 0.050
  • Example 2 Sodium carbonate 50 Sodium sulfate 70 Ascorbic acid l0 1-phenyl-3-pyrazolidone 1 Potassium bromide 3 Sodium thiosulfate 60 S-phenyl-l-mercaptotetrazole 0.200 Water to make 1 liter.
  • This bath which has a high concentration of sodium thiosulfate, allows treating an increased number of sheets. If the processingis carried on in a machine such as disclosed, in which lutipnjgis agitated in chamber 13, 80- sheets of size 2 1 X 27 cm. can be processed, whereas without agitation, in accordance with the present invention, the number of sheets treated in satisfactory manner would be approximately 50.
  • a tank for said monobath solution comprising side plates connected by a semi-cylindrical bottom plate, and a top plate having a quartercylindrical portion concentric to said bottom plate and spaced therefrom and a planar portion connected to one end of said quarter-cylindrical portion, said side plates, bottom plate and quarter-cylindrical portion cooperating to form a first processing zone of limited volume, and said side plates, bottom plate and planar portion coopcrating to form a second processing zone of greater volume than said first processing zone hydraulically connected to said first zone; means for agitating the monobath solution in said second processing zone; and means for transporting a material to be processed through said first and second processing zones in succession.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US801129A 1958-08-13 1959-03-23 Apparatus and method for treating photographic products in a single bath Expired - Lifetime US3110595A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1206372T 1958-08-13

Publications (1)

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US3110595A true US3110595A (en) 1963-11-12

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US (1) US3110595A (fr)
FR (1) FR1206372A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839040A (en) * 1971-03-15 1974-10-01 A Goldstein Process for preparing colored film overlays
US6505978B2 (en) * 2000-12-21 2003-01-14 Eastman Kodak Company Processing photographic material

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614927A (en) * 1949-06-01 1952-10-21 Eastman Kodak Co Rapid processing of photographic materials
US2696439A (en) * 1952-01-04 1954-12-07 Levinos Steven Photographic stabilization process
US2712977A (en) * 1951-09-26 1955-07-12 Ici Ltd Method and apparatus for treating a tow of filaments or threads in a limited space
US2747479A (en) * 1952-09-27 1956-05-29 Eastman Kodak Co Photographic copying apparatus
US2762281A (en) * 1952-06-07 1956-09-11 Dick Co Ab Reproducing apparatus
US2800682A (en) * 1954-02-23 1957-07-30 American Viscose Corp Piezoelectric tube for applying liquid to running strands
US2945760A (en) * 1957-01-08 1960-07-19 Gulton Ind Inc Photographic processing method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2614927A (en) * 1949-06-01 1952-10-21 Eastman Kodak Co Rapid processing of photographic materials
US2712977A (en) * 1951-09-26 1955-07-12 Ici Ltd Method and apparatus for treating a tow of filaments or threads in a limited space
US2696439A (en) * 1952-01-04 1954-12-07 Levinos Steven Photographic stabilization process
US2762281A (en) * 1952-06-07 1956-09-11 Dick Co Ab Reproducing apparatus
US2747479A (en) * 1952-09-27 1956-05-29 Eastman Kodak Co Photographic copying apparatus
US2800682A (en) * 1954-02-23 1957-07-30 American Viscose Corp Piezoelectric tube for applying liquid to running strands
US2945760A (en) * 1957-01-08 1960-07-19 Gulton Ind Inc Photographic processing method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839040A (en) * 1971-03-15 1974-10-01 A Goldstein Process for preparing colored film overlays
US6505978B2 (en) * 2000-12-21 2003-01-14 Eastman Kodak Company Processing photographic material

Also Published As

Publication number Publication date
FR1206372A (fr) 1960-02-09

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