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US3081687A - Apparatus for rapid development of photographic film - Google Patents

Apparatus for rapid development of photographic film Download PDF

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Publication number
US3081687A
US3081687A US735249A US73524958A US3081687A US 3081687 A US3081687 A US 3081687A US 735249 A US735249 A US 735249A US 73524958 A US73524958 A US 73524958A US 3081687 A US3081687 A US 3081687A
Authority
US
United States
Prior art keywords
trough
container
cavity
film
liquid
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
Application number
US735249A
Other languages
English (en)
Inventor
Takats Zoltan
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.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by General Aniline and Film Corp filed Critical General Aniline and Film Corp
Priority to US735249A priority Critical patent/US3081687A/en
Priority to BE574475A priority patent/BE574475A/fr
Application granted granted Critical
Publication of US3081687A publication Critical patent/US3081687A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • G03D5/003—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected film surface only souching the liquid

Definitions

  • This invention relates to photographic processing apparatus and, more'particularly, to' an apparatus for rapid development of photographic film or similar material.
  • the apparatus constructed in accordance therewith circulates developing solution in a narrow confine and applies this to the emulsion side of a moving film web, at the same time removing excess developer from the surface of the film so that further development is arrested.
  • FIG. 2 is a sectional view taken along lines 22 of FIG. 1.
  • the apparatus consists of an elongated support 4 which may be mounted on a base 5 by means of legs 6 and 7.
  • the support has a longitudinal channel 8 in which is imbedded an insert 9 of resilient material such as plastic or rubber. In practice, the latter has proved particularly useful for this purpose.
  • the insert 9 is so constructed as to form a trough 11 7 having vertically extending edges or lips 12 and 13.
  • the film 15 may be moved in any suitable manner across the trough 11, for example, between a pair of rollers 19 and 20 as diagrammatically shown in FIG. 2, the roller 20 being driven by a suitable motor 21.
  • the support 4 is preferably of stainless steel or similar material and also has a cavity 23 which runs parallel with the trough 11. The purpose of this is to permit circulation of liquid in the body of the support 4 so as to maintain it at a certain temperature.
  • the same liquid namely, the solution used for the development of the film circulating in the trough 11, is also employed for conveying heat to the support 4 by circulating it in the cavity 23.
  • the circulatory system consists essentially of a liquid storage tank 25 having two outlet conduits 27 and 28 and a return conduit 29.
  • a heating element shown diagrammatically as a coil 30, is located in the tank 25.
  • thermostatic switch not shown here, since such an arrangement is conventional and is not part of the present invention.
  • the solution in the tank being controlled as to temperature, will also effectively maintain a predetermined temperature in the cavity 23 so that variations in temperature of the developing liquid in the trough be thereby minimized.
  • the conduit 27 connects to the inlet opening of the cavity 23, the outlet of which is serviced by the conduit 31 which terminates in the suction end of the pump 32, the pressure end of which connects to the return conduit 29. In this manner, a direct circulation is established between the tank 25 and the cavity 23.
  • the conduit 31 has a funnelshaped portion 33 of larger diameter where it enters the cavity 23.
  • the outlet pipe 34 of the trough 11 extends into the portion 33 so that this assembly will function as an aspirator.
  • the suction produced by the fiowof liquid in the cavity 23 and the conduit 31 is thus utilized to create a flow of developing liquid in the trough 11 from the tank 25 through the outlet conduit 28, pipe 34, conduit 31 and the pump 32.
  • the aspirator-type liquid displacement in the trough 11 has the particular advantage that circulation'is ancillary to the main liquid fiow in the cavity 33 and may be stopped at any time without disturbing the operation of the pump or the flow in the cavity 33 and that the suction created enhances the adherence of the film to the lips of the trough 11.
  • an air valve 36 in the conduit 28. When this valve is opened, air may enter through the opening 37 into the trough 11 and the suction produced in the aspirator will remove all residual liquid.
  • the trough can easily be cleaned at any time desired while the liquid flow is maintained in the body of the support 4 to maintain the necessary temperature.
  • the tank 25 is filled with suitable developing solution, for example, the type described in the aforementioned co-pending application, and the pump started to circulate the liquid in the cavity 23 until the required temperature is established. Circulation may now be started in the trough 11 by simply closing the air valve 36.
  • the film 15 is passed across the trough 11, firmly contacting the lips 12 and 13, whereby the area over the trough 11 is completely sealed by the film.
  • the developing liquid in the trough 11 contacts the emulsion side of the film 15, development taking place as the film 15 is moved between the rollers 19 and 20 by the motor 21. It is to be understood that the speed of film travel may be regulated by the motor 21 by suitable gearings or electrical controls, not shown here, so that sufiicient time is assured for the developing liquid to be absorbed by the emulsion for proper development.
  • Apparatus for applying developing liquid to a moving photographic film or the like comprising an elongated solid support having an insert of resilient material, said insert having walls defining a trough, said support enclosing a cavity below said trough andrunning substantially parallel therewith, a container for developing liquid, conduits interconnecting said container with said cavity including a pump for circulating the liquid between said container and said cavity, inlet and outlet openings in said trough, a conduit interconnecting said inlet opening with said container and aspirator means in the conduit interconnecting said cavity and said container for producing a circulation of developing liquid in said trough, said trough having vertically extending lips adapted to contact said film and seal the area overlying said trough, means for pressing said film thereagainst while it moves in the direction transverse to said trough.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US735249A 1958-05-14 1958-05-14 Apparatus for rapid development of photographic film Expired - Lifetime US3081687A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US735249A US3081687A (en) 1958-05-14 1958-05-14 Apparatus for rapid development of photographic film
BE574475A BE574475A (fr) 1958-05-14 1959-01-06 Appareil pour le développement rapide des films photographiques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US735249A US3081687A (en) 1958-05-14 1958-05-14 Apparatus for rapid development of photographic film

Publications (1)

Publication Number Publication Date
US3081687A true US3081687A (en) 1963-03-19

Family

ID=24954968

Family Applications (1)

Application Number Title Priority Date Filing Date
US735249A Expired - Lifetime US3081687A (en) 1958-05-14 1958-05-14 Apparatus for rapid development of photographic film

Country Status (2)

Country Link
US (1) US3081687A (fr)
BE (1) BE574475A (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181444A (en) * 1962-08-27 1965-05-04 Gen Aniline & Film Corp Control and actuation of rapid processing equipment
US3342164A (en) * 1964-11-04 1967-09-19 Clevite Corp Electrostatic toner head and system
US3345927A (en) * 1964-06-26 1967-10-10 Gen Aniline & Film Corp Apparatus for rapid development of photographic film
US3392706A (en) * 1966-09-06 1968-07-16 Varian Associates Liquid inker for electrographic image development employing the suction of an air pump for applying the ink
US3461843A (en) * 1967-11-21 1969-08-19 Stanford Research Inst Toner application apparatus
US3557752A (en) * 1968-12-09 1971-01-26 Nils L Hakanson Electrophotographic developing apparatus
US3574457A (en) * 1968-10-03 1971-04-13 Dresser Ind Electrostatic camera
US3683852A (en) * 1970-03-13 1972-08-15 Isao Yamaguchi Electrophotographic developing apparatus
US3727578A (en) * 1969-10-11 1973-04-17 Canon Kk Electrophotographic developing device using liquid
JPS4929139A (fr) * 1972-07-06 1974-03-15
US3886898A (en) * 1973-12-19 1975-06-03 Burroughs Corp Multiple, contiguous stripe, extrusion coating apparatus
US3903541A (en) * 1971-07-27 1975-09-02 Meister Frederick W Von Apparatus for processing printing plates precoated on one side only
US3912833A (en) * 1973-06-27 1975-10-14 American Videonetics Corp Film processing apparatus and method for information storage system
US3936854A (en) * 1974-05-24 1976-02-03 Eastman Kodak Company Apparatus for developing photosensitive material
US3986191A (en) * 1970-07-30 1976-10-12 Blu-Ray, Incorporated Apparatus for developing diazo type film
US4013356A (en) * 1974-04-11 1977-03-22 Agfa-Gevaert, A.G. Apparatus for developing electrostatic images with liquid toner
US4537486A (en) * 1982-06-03 1985-08-27 Agfa-Gevaert Aktiengesellschaft Apparatus for the exposure and development of photographic images
US4623241A (en) * 1981-11-18 1986-11-18 Nashua Corporation Developing apparatus and method for a photocopier employing liquid development
US5353088A (en) * 1993-05-03 1994-10-04 Eastman Kodak Company Automatic tray processor
US5400106A (en) * 1993-05-03 1995-03-21 Eastman Kodak Company Automatic tray processor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2631511A (en) * 1948-06-26 1953-03-17 Kenyon Instr Company Inc Control for rapid film processing
US2780974A (en) * 1957-02-12 fairbank
US2856829A (en) * 1955-12-07 1958-10-21 Orlando Carl Apparatus for making photographic reproductions for projection

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2780974A (en) * 1957-02-12 fairbank
US2631511A (en) * 1948-06-26 1953-03-17 Kenyon Instr Company Inc Control for rapid film processing
US2856829A (en) * 1955-12-07 1958-10-21 Orlando Carl Apparatus for making photographic reproductions for projection

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3181444A (en) * 1962-08-27 1965-05-04 Gen Aniline & Film Corp Control and actuation of rapid processing equipment
US3345927A (en) * 1964-06-26 1967-10-10 Gen Aniline & Film Corp Apparatus for rapid development of photographic film
US3342164A (en) * 1964-11-04 1967-09-19 Clevite Corp Electrostatic toner head and system
US3392706A (en) * 1966-09-06 1968-07-16 Varian Associates Liquid inker for electrographic image development employing the suction of an air pump for applying the ink
US3461843A (en) * 1967-11-21 1969-08-19 Stanford Research Inst Toner application apparatus
US3574457A (en) * 1968-10-03 1971-04-13 Dresser Ind Electrostatic camera
US3557752A (en) * 1968-12-09 1971-01-26 Nils L Hakanson Electrophotographic developing apparatus
US3727578A (en) * 1969-10-11 1973-04-17 Canon Kk Electrophotographic developing device using liquid
US3683852A (en) * 1970-03-13 1972-08-15 Isao Yamaguchi Electrophotographic developing apparatus
US3986191A (en) * 1970-07-30 1976-10-12 Blu-Ray, Incorporated Apparatus for developing diazo type film
US3903541A (en) * 1971-07-27 1975-09-02 Meister Frederick W Von Apparatus for processing printing plates precoated on one side only
JPS4929139A (fr) * 1972-07-06 1974-03-15
JPS5513024B2 (fr) * 1972-07-06 1980-04-05
US3912833A (en) * 1973-06-27 1975-10-14 American Videonetics Corp Film processing apparatus and method for information storage system
US3886898A (en) * 1973-12-19 1975-06-03 Burroughs Corp Multiple, contiguous stripe, extrusion coating apparatus
US4013356A (en) * 1974-04-11 1977-03-22 Agfa-Gevaert, A.G. Apparatus for developing electrostatic images with liquid toner
US3936854A (en) * 1974-05-24 1976-02-03 Eastman Kodak Company Apparatus for developing photosensitive material
US4623241A (en) * 1981-11-18 1986-11-18 Nashua Corporation Developing apparatus and method for a photocopier employing liquid development
US4537486A (en) * 1982-06-03 1985-08-27 Agfa-Gevaert Aktiengesellschaft Apparatus for the exposure and development of photographic images
US5353088A (en) * 1993-05-03 1994-10-04 Eastman Kodak Company Automatic tray processor
US5400106A (en) * 1993-05-03 1995-03-21 Eastman Kodak Company Automatic tray processor

Also Published As

Publication number Publication date
BE574475A (fr) 1959-05-02

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