US3532047A - Replenishment system for a processing device - Google Patents

Replenishment system for a processing device Download PDF

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Publication number
US3532047A
US3532047A US676816A US3532047DA US3532047A US 3532047 A US3532047 A US 3532047A US 676816 A US676816 A US 676816A US 3532047D A US3532047D A US 3532047DA US 3532047 A US3532047 A US 3532047A
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US
United States
Prior art keywords
solution
film
processing
replenishment
processing device
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
US676816A
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English (en)
Inventor
Wallace L Pensgen
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
Original Assignee
Eastman Kodak Co
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Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of US3532047A publication Critical patent/US3532047A/en
Anticipated expiration legal-status Critical
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    • 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
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • G03D3/065—Liquid supply; Liquid circulation outside tanks replenishment or recovery apparatus
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/007—Processing control, e.g. test strip, timing devices

Definitions

  • This invention relates generally to processors, and more specifically to an improved processing device having a substance replenishment system and means for producing an output proportional to the width of a material transported through the processor. Control means are actuated in response to the output for controlling the substance replenishment system.
  • the time of development is easily controlled by a variety of well known mechanical means, or may be controlled manually by the operator with the aid of a timer.
  • control of the processing temperature ordinarily presents no particular difficulty.
  • the remaining variable, namely control of the concentration of the processing solution is more of a problem.
  • Beingreducing agents the solutions are subject to oxidation by the atmosphere, and such oxidation consumes the reducing agents, lowering the effective concentration of the solutions.
  • each portion of photographic material (film, paper, etc.) that is processed consumes a portion of the reducing agents in the processing solutions so that the solu tions gradually become exhausted.
  • This invention includes within its scope a substance replenishment system such as a processing solution replenishment system for a processing device such as a photographic processing device.
  • a material sensing mechanism in the processing device is responsive to the width of the material in sheet or web form as it is transported through the processing device for producing a pressure output.
  • the pressure output is produced by a pressure system such as a negative pressure system in which the amount of negative pressure generated is proportional to the width of the material and increases as the width of the material increases. This pressure output actuates control means for controlling the rate of substance replenishment.
  • One object of the present invention is to provide a processing substance replenishment system for a processing device having a material sensing mechanism that is responsive to the width of the material as it is transported through the processing device for producing a pressure output, such output in turn actuating control means for controlling the rate of substance replenishment.
  • FIG. I is a schematic view of a processing apparatus such as a photographic processing device showing the developing, fixing, washing and drying chambers thereof;
  • FIG. 2 is a schematic view partially in perspective and partially in block diagram form of a processing solution replenishment system for a processing device, in which portions of the processing device have been omitted for purposes of clarity.
  • this invention is shown schematically in connection with a processing device 10v of any known type such as a photographic processor having developing, fixing, washing and drying chambers l2, l4, l6 and 18 respectively.
  • the processing device I0 has a pressure means for sensing sheet or web material comprising a feed table 20 over which the material such as a film 22 is transported.
  • the film feed table 20 has a recess extending laterally thereof as shown dotted in FIG. 2 to form a chamber 24, and a plurality of small spaced openings 26 extending from the top of table 20 into chamber 24.
  • chamber 24 is shown integral with table 20, it may be a separate unit secured to the table or to any other portion of the processing device 10 provided the film 22 to be processed is transported over it.
  • a conduit 28 has one end connected to the bottom of chamber 24, and the other end thereof connected to a pump 30 for drawing air through openings 26 and chamber 24.
  • the conduit 28 is provided with a negative pressure or partial vacuum adjustment bleed valve 32 for controlling the amount of negative pressure generated or developed in conduit 28 and chamber 24.
  • the control means which is responsive to the pressure film sensing mechanism comprises a movable mechanism of any known type such as a piston 34 connected to conduit 28 and movable in a cylinder 36 by the negative pressure generated in conduit 28 when the film covers one or more of the openings 26 in chamber 24.
  • the amount of negative pressure developed is proportional to the number of openings covered, and hence the width of the film, and becomes greater as more of the openings are covered.
  • the movement of piston 34 is proportional to the amount of negative pressure generated, and controls a valve 40 in a processing solution supply conduit 42 by means of a rod 38 interconnecting piston 34 and valve 40.
  • a pump 44 pumps processing solution from any suitable source or supply of processing solution through conduit 42 and valve 40 to one of the processing solution chambers 12, 14 for replenishing same.
  • valve 40 preferably operated by rod 38 may be utilized to replenish the remaining chamber.
  • the negative pressure generated increases resulting in valve 40 being increasingly opened with a corresponding increasingly higher rate of solution replenishment.
  • the replenishment continues as long as film 22 covers the openings, and when the openings are uncovered, valve 40 is immediately returned by piston 34 to its normal preset position for providing a standby rate of replenishment or for turning off the replenishment completely, depending upon how it is initially set.
  • a film transport motor control 46 of known type for processor has a potentiometer 48 for controlling the speed at which film 22 is transported through the processor, normally by pairs of opposed rollers, and this motor control may be connected to valve 40 for automatically adjusting the valve opening relative to piston 34 to correspond to the speed of film transport. The greater the speed of film transport, the greater the valve opening thereby increasing the solution replenishment rate to compensate for the shorter period of time piston 34 is actuated and solution pump 44 is operated.
  • valve 40 In the operation of this invention, when a material such as a photographic film is introduced into the processing device 10 of a width capable of covering one or more openings 26 in chamber 24, the negative pressure generated in the system moves piston 34 and valve 40 to adjust the solution replenishment rate in proportion to the width of the film. Solution replenishment will continue as long as film 22 covers Openings 26. As soon as the openings are uncovered, valve 40 will return to its normal position causing the solution replenishment rate to return to its normal nominal rate for standby operation, or to be turned off entirely depending on the preset position of valve 40.
  • fluid pressure means for sensing film transported through the processing device and producing a fluid pressure output proportional to the width of the film that is processed
  • control means for said solution replenishing means responsive to the fluid pressure output of said film sensing fluid pressure means for controlling the rate of solution replenishment whereby the strength of the solution is maintained at said predetermined value.
  • said pressure sensing means comprises a chamber having openings therein across which the film is transported, and a pump connected to said chamber and to said solution replenishing means for producing a negative pressure output proportional to the width of the film transported across said openings.
  • solution replenishing means comprises an adjustable valve
  • control means comprises a piston connected to said valve and responsive to the fluid pressure output of said pressure sensing means for controlling said valve and the rate of solution replenishment.
  • said fluid pressure sensing means comprises a chamber having openings therein across which the film is transported, and a pump connected to said chamber and to said solution replenishing means for producing a negative pressure output proportional to the width of the film transported across said openings;
  • said solution replenishing means comprises an adjustable valve for controlling the rate of solution replenishment; and
  • said control means comprises a piston connected to said valve and responsive to the pressure output of said pressure sensing means for adjusting said valve and the rate of solution replenishment.
  • a processing solution replenishment system for a photographic processing device containing a processing solution through which an exposed photographic film material is transported for processing, the combination comprising:
  • fluid pressure means for sensing a film transported through the processing device and producing a fluid pressure output proportional to the width of the film that is processed
  • control means for said solution replenishing means and responsive to said fluid pressure film sensing and pressure output producing means for controlling the rate of solution replenishment.
  • said film sensing and pressure output producing means comprises a chamber having openings therein, said chamber being connected to said solution replenishing means, and a pump connected to said chamber for producing a negative pressure in said chamber when a film is transported across said openings causing an increase in the rate of solution replenishment proportionate to the number of openings covered.
  • a material handling device having substance containing means and means for transporting the material through the device and into contact with the substance, the combination comprising:
  • fluid pressure means for sensing material transported through the device and producing a fluid pressure output proportional to the width of the material
  • control means for said replenishing means responsive to the fluid pressure output of said material sensing pressure means for controlling the rate of substance replenishment.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US676816A 1967-10-20 1967-10-20 Replenishment system for a processing device Expired - Lifetime US3532047A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US67681767A 1967-10-20 1967-10-20
US67681667A 1967-10-20 1967-10-20

Publications (1)

Publication Number Publication Date
US3532047A true US3532047A (en) 1970-10-06

Family

ID=27101624

Family Applications (2)

Application Number Title Priority Date Filing Date
US676816A Expired - Lifetime US3532047A (en) 1967-10-20 1967-10-20 Replenishment system for a processing device
US676817A Expired - Lifetime US3487763A (en) 1967-10-20 1967-10-20 Water conservation system for a photographic film processing device

Family Applications After (1)

Application Number Title Priority Date Filing Date
US676817A Expired - Lifetime US3487763A (en) 1967-10-20 1967-10-20 Water conservation system for a photographic film processing device

Country Status (6)

Country Link
US (2) US3532047A (enrdf_load_stackoverflow)
BE (1) BE722364A (enrdf_load_stackoverflow)
CH (1) CH475581A (enrdf_load_stackoverflow)
DE (2) DE1803982A1 (enrdf_load_stackoverflow)
FR (2) FR1587122A (enrdf_load_stackoverflow)
GB (2) GB1238887A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852793A (en) * 1973-01-31 1974-12-03 E Mcclintock Apparatus for conserving the use of water electricity, and the like in automatic film processors
US4091403A (en) * 1975-09-29 1978-05-23 Magnagard Equipment Manufacturing Corporation Diazo film advancing module
US4101214A (en) * 1975-01-13 1978-07-18 Minolta Camera Kabushiki Kaisha Toner dispensing device with electrical integrating circuit
US4222657A (en) * 1978-04-07 1980-09-16 Agfa-Gevaert, A.G. Continuous film-developing machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1208647A (en) * 1967-12-15 1970-10-14 Ricoh Kk Improvements in and relating to photographic processing apparatus
US3763758A (en) * 1972-09-25 1973-10-09 Logetronics Inc Control unit for minimizing water and power consumption in automatic film processors

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3157103A (en) * 1961-08-09 1964-11-17 Eastman Kodak Co Viscous solution processing device adapted for continuous operation
US3334566A (en) * 1965-02-02 1967-08-08 Visual Graphics Corp Photographic developing apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3852793A (en) * 1973-01-31 1974-12-03 E Mcclintock Apparatus for conserving the use of water electricity, and the like in automatic film processors
US4101214A (en) * 1975-01-13 1978-07-18 Minolta Camera Kabushiki Kaisha Toner dispensing device with electrical integrating circuit
US4091403A (en) * 1975-09-29 1978-05-23 Magnagard Equipment Manufacturing Corporation Diazo film advancing module
US4222657A (en) * 1978-04-07 1980-09-16 Agfa-Gevaert, A.G. Continuous film-developing machine

Also Published As

Publication number Publication date
FR1589343A (enrdf_load_stackoverflow) 1970-03-23
DE1803981A1 (de) 1970-02-19
GB1248939A (en) 1971-10-06
GB1238887A (enrdf_load_stackoverflow) 1971-07-14
CH475581A (fr) 1969-07-15
FR1587122A (enrdf_load_stackoverflow) 1970-03-13
DE1803982A1 (de) 1969-05-29
US3487763A (en) 1970-01-06
BE722364A (enrdf_load_stackoverflow) 1969-03-14

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