US3846818A - Apparatus for developing photographic materials - Google Patents

Apparatus for developing photographic materials Download PDF

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US3846818A
US3846818A US00331986A US33198673A US3846818A US 3846818 A US3846818 A US 3846818A US 00331986 A US00331986 A US 00331986A US 33198673 A US33198673 A US 33198673A US 3846818 A US3846818 A US 3846818A
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developer
unit
combination
container
supplying
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W Merz
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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
    • 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

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  • the present invention relates to an apparatus for developing of photographic materials, and is particularly advantageous for use in developing of color film.
  • Apparatus for developing of photographic materials, color films or otherwise is already well known.
  • Generally such apparatus uses a developing unit in which the photographic materials together with the developer liquid are accommodated.
  • the developer liquid is made to contact the photographic material by imparting movement to the unit and thereby to the developer liquid, or in other ways, and this results in the developing of the photographic materials.
  • Another object of the invention is to provide such an apparatus which is simple in its operation as well as being reliable.
  • a further object of the invention is to provide such, an apparatus which has a high throughput capacity per unit of time and therefore operates very economically.
  • an apparatus for developing photographic materials, particularly color films which, briefly stated, comprises a film developing unit, a source ofdeveloper, and supplying means for supplying metered quantities of developer from the source to the unit.
  • Selecting means is operatively associated with the supplying means for selecting the magnitude of the metered quantities, and sensing means is provided for sensing the developer content in the supplying means and for. controlling the operation of the latter in dependence upon the sensed content and within the magnitude selected by the selecting means.
  • one or several heads or containers are provided as part of the supplying means, containing the developer liquid or constituent components of the developer liquid and provided with feelers which extend to different levels within their respective containers and which are part of an electrical circuit which is interrupted when the liquid level in the respective container reaches a certain point which can be preselected by the selection of the respective feeler, for instance interrupting the drive of a pump for pumping the contents into the developer unit.
  • feelers which extend to different levels within their respective containers and which are part of an electrical circuit which is interrupted when the liquid level in the respective container reaches a certain point which can be preselected by the selection of the respective feeler, for instance interrupting the drive of a pump for pumping the contents into the developer unit.
  • the feelers themselves are advantageously in form of electrodes which are surrounded in insulated relationship by tubes having open ends which may be beveled to avoid the formation of droplets at these open ends. Also, it is advisable for the insulation which is located in the space between the interior of the tube at the respective electrode to be inwardly offset from the open end of the tube in order to permit the formation of an air bubble in this space, which facilitates proper operation of the circuit, as will be discussed later.
  • the container or containers communicate of course with the source of supply of the developer liquid, or of the liquid constituent components thereof, and in order to avoid the possibility that the turbulence of incoming liquid might trigger the operation of the circuit, or of the respective circuit do to the formation of waves which might momentarily simulate a liquid level different from the actual level, one or more baffles may be installed in the respective container between the feelers and the inlet openings for the incoming liquid.
  • the containers as well as the unit itself must be flushed at regular intervals in order to remove residual developer liquid or constituent components of such liquid.
  • the water used for this purpose is admitted into the container or containers in such a manner that it also flushes the inlet openings through which the'developer liquid or component enters the respective container.
  • a collecting chamber may be provided interposed in the incoming conduits upstream of the inlet openings, and the flushing water may be admitted into this collecting chamber from which it is distributed to the respective inlet openings.
  • the chamber and portions ofthe incoming conduits are advantageously provided in a cover of the respective container, which cover may be removably accommodated on the container.
  • a signal-generating arrangement which operates to generate a signal if the level of liquid in the developer unit is exceeded. In the event this excess level is sensed while the unit contains developer, the generated signal may be used to trigger an increased admission of water in order to prevent an excessive concentration of developer and possible disadvantageous consequences with respect to the film material.
  • the signal can be used to direct-partial or complete termination of the admission of flushing water into the unit.
  • the signal can also be used to interrupt partially or completely the admission of additional developer into the unit.
  • a pump may be provided for pumping out the contents from the unit, and the signal may be used either to turn'on the pump or to speed up the operation of the same.
  • the same or another signal produced at the same time can be used to produce a warning, for instance to trigger an optical or acoustic warning.
  • control of the flow of liquid into or out of the developer unit itself can also be sensed by an appropriate sensing arrangement, advantageously further feelers which extend to different levels into the liquid reservoir of the unit and which control an electrical circuit, particularly in such a manner that the operation of the liquid-draining pump (or its speeding up), or the shuttingoff of liquid inflow into the developing unit will be triggered only after the level of liquid in the reservoir has dropped below the lowest fecler, it being assumed again that the feeler extends from above and has its lower end atdifferent levels.
  • the supplying means with the developer receptacle or receptacles and/or the developing unit itself preferably together with the associated conduits and pumpsform a cabinet-like unitary system for'reasons of compactness and neatness of appearance.
  • the container or containers may for instance be located below the remainder of the supplying means.
  • the quality of the developing work on the film materials, and consequently the quality of the photographs obtained depends to a substantial extent upon maintaining a certain temperature of the developer liquid.
  • a thermostatic arrangement is provided according to the present invention which maintains the temperature of the developer in the single container, or of the various liquid constituents of the developer in several containers, at a preselected level.
  • an air circulating system may be provided and heating and/or cooling devices and air impellers such as fans or the like which circulates air of desired temperature.
  • the containers, or rather their chemical contents, may be protected against contact with oxygen in a very simple manner, namely by providing floats and/or covers on the containers.
  • a series of control elements for instance switches or pushbuttons; may be provided by means of which'to select desired programs and to initiate operation of the same, depending upon the requirements of the given circumstances.
  • FIG. 1 is a schematic of an apparatus according to the present invention
  • FIG. 2 is a diagrammatic longitudinal section through the developer unit of the apparatus
  • FIG. 3 is a diagrammatic axial section through a supplying means of the apparatus according to the present invention.
  • FIG. 4 is a longitudinal section through afeeler'used in the embodiment of FIG. 3;
  • FIG. 5 is an electrical circuit showing the operation of the supplying means of FIG. 3;
  • FIG. 6 is a view similar to FIG. 5 but illustrating th circuitry of the electrical control system for a liquidremoving pump used in the developer unit of FIG. 2;
  • FIG. 7 is a perspective view of a cabinet, with FIG. 7a illustrating a cabinet for the chemical components of the developer liquid and FIG. 7b illustrating a cabinet console with-the supplying means of FIG. 3;
  • FIG. 8 is a diagrammatic view of a structural unit containing the constituent components of the apparatus according to the present invention.
  • FIG. 9 is a section taken on line 9-9 of FIG. 8.
  • FIG. 1 illustrates schematically andin form of an overview an apparatus according to the present invention, showing the connection between the various components. It is preferred, but not necessary, that the apparatus be in form of a unitary assembly such as is shown in FIG. 8.
  • Reference numeral designates a cabinet containing the source of developer chemicals, namely a plurality of individual tanks 11. There is no need to go into details concerning the particular chemicals; these are well known.
  • Reference numeral 19 designates in toto asupplying means, that is a metering arrangement having a plurality of metering heads or containers 20. In the present embodiment there are two of these containers 20 provided. Conduits 12 and respective branch conduits (two of them are shown) 13 and 14, as well as pumps 15 and 16 and conduits 17 and 18 are provided for supplying chemicals from the tanks 11 to the containers 20.
  • a film developer unit 22 is provided having a developing chamber 23 in which there are located developing devices 24, preferably, but not necessarily, in form of horizontally positioned developing tubes.
  • Supply conduits 21, which may be opened and closed by valves 21a that may be electromagnetically controlled, connect the containers preferably at the lowest points thereof-with the unit 22 so that the chemicalsusually liquids-flow through the conduits 21 into inlet funnels 25 which are connected via conduits 26 with the devices 24.
  • the exposed film material or photographic material which is to be developed is located in the tubes of the devices 24 and may for instance be distributed about the inner circumferential surfaces thereof.
  • a drive 24a is provided and, as FIG. 2 shows, it causes the tubes 24 to alternately turn in one direction x and then in the other direction x through a certain portion of arc, so that the photographic material to be developed is made to constantlypass through the developer liquid accommodated in the tubes 24 and filling the same in part.
  • An arrangement 24b may be provided which imparts a longitudinal rocking movement to the tubes 24. 7
  • the pump 27 can be supplemented with a direct discharge conduit 28a through which liquid can be discharged without the use of the pump, and in addition or in place of the conduit 28a there may be an overflow provided at an appropriate level in the lower portion of the chamber 23 or the reservoir 23a thereof in which the developer liquid is accommodated.
  • a flushing system for this purpose using usually water in accordance with conventional practice, is illustrated in broken lines in FIG. 1 and provided with a supply conduit 29 which maybe connected with a tap or another source of water.
  • a conduit 30 branches off the conduit 29 through each of the container units or devices 24 with whose inlet funnels 25 they communicate via valves 32 and conduits 33.
  • Additional branch conduits 31 branch off the conduit 29 and communicate with the respective containers 20 via valves 34 and conduits 35.
  • ()vertlow conduits 36 are provided which prevent the liquids, that is chemicals or flushing water, from exceeding a certain level in the containers 20.
  • these overflow conduits are connected with the containers 20 at the highest point of the interior 20a thereof so that the entire height of the respective con- 6 tainer 20 can be used for accommodating liquid to be metered.
  • the illustrated container 20 has a hollow, preferably removable, cover 37, the hollow interior 38 of which can serve as a collector for the flushing water which is admitted via the conduit 35.
  • the inletconduits 17 for the developer chemical or chemicals extend in part through the space or chamber 38, such parts being identified with reference numeral 39 and having the outlet openings which communicate with the interior 20a.
  • Conduits 17 are bent in a downward curve as close as possible above the upper side of the cover 37, extending downwardly to the pumps 15 and 16; the purpose of this is to assure that in the event the supply of liquid through these conduits is interrupted, only a relatively small amount of liquid remains in the conduits in those portions thereof from which it can flow into the container 20.
  • Annular openings 38a surrounding the outlet openings of the portions 39, establish a communication between the space 38 and the interior 20a of the respective container 20.
  • the purpose of this is to assure that the flushing water which is discharged into the space 38, whether under pressure or not, will enter directly into the outlet openings of the conduits 17 and thus flush these outlet openings before it enters the interior 20a of the container 20.
  • a valve 21a is provided which controls the connection of the interior 20a with the unit 23 via the conduit 21.
  • a solenoid or similar device is provided which controls the opening and closing of this valve, advantageously automatically in dependence upon a preselected program as will be discussed later.
  • the space 20a is subdivided by a baffle 41 into an inlet compartment 42 into which liquid is discharged by the conduits 17 from above, and into a sensing compartment 43 locating with the compartment 42 and into which the individual feelers 44 of the sensing system extend from above to different depths.
  • a counter electrode 45 serving as a counter pole to the feelers 44.
  • feelers 44 are exemplary only. They can also be arranged in other ways as long as it is assured that their contacts 46 are located at different levels within the compartment 43 so that the liquid level 47 rising in the compartment 43 will reach the individual contacts 46 of the various feelers 44 at different times.
  • the electrode 45 extends over a height which corresponds at least to the difference between the highest and lowest contact 46.
  • One of the feelers 44 is illustrated on an enlarged scale in a longitudinal section in FIG. 4. It will be seen to have an interior electrode 48 which may, for instance, be of special steel, the lower free end of which forms the contact 46.
  • the electrode 48 is located within a tube 49 surrounding it with spacing, and in the space between them is insulating material 50, for instance a polyester resin or the like.
  • the lower end of the tube 49 is open and surrounds the contact 46 to a greater or lesser degree. It is also beveled at 51, the purpose being to prevent the formation of drops at the lower end in the event the liquid level 47 descends below the level at which the contact 46 is located.
  • the insulating material 50 is upwardly recessed from the contact 46 to assure that in thelower region of the tube 46 an air bubble 52 can be formed, preventing electrical shorting between the contact 46 to the liquid at the wall of the tube.
  • FIG. shows a circuit diagram for the supplying means.
  • the electrodes 48 with the contacts 46 of the feelers 44 (the latter are not shown) extend into the compartment 43, together with the electrode 45, all of them from above.
  • Electrical energy is supplied at 53, for instance representative of a source supplying alternating current at 220 volts, although this is of course only exemplary.
  • the motor 54 is energized by the source of drive 1 of the pumps or 16.
  • individual motors can be provided .for each of the pumps, or motors 54 can be utilized which drive the pumps l5, 16 in groups or together in which latter case, however, special circuitry would have to be providedso that a pump selected for individual operation in accordance with a program could be driven alone or in conjunction with other individually selected pumps, whereas the remaining pumps would not be driven or would not supply liquid to the supplying means.
  • Switch 55 in the circuit-56 of the motor 54 can be 0perated to be switched on and off by a relay 57, so as to energize. and deenergize the motor 54.
  • the relay 57 is positioned in a low-voltage circuit 58 which includes the secondary side of a transformer 59 but is also connected with the source 53.
  • a conductor of the circuit 58 is connected with the counter electrode which may, for instance, constitute the negative pole of the circuit 58, and the conductor extends to individual contacts 60 which can be electrically connected with the electrodes 48 via individual switches 61.
  • the circuit 58 remains interrupted. This interruption continues even while liquid (for instance one of the chemicals from one of the tanks 11) is admitted into the container 20, as long as the level of liquid remains below that of the contact 460 that has been selected with the switch 61a. However, as soon as the level It is reached at which the liquid wets the contact 46a, the circuit between the counter electrode 45 and the contact 46 is closed, causing the relay 57 to open the switch and to deenergize the motor 54. This in turn results in deenergization of the pump 15 or 16 driven by the motor 54 and in a termination of the supply of liquid via the associated con duit 17 into the container 20.
  • FIG. 2 it will be seen that here there is illustrated an arrangement 62 which has been diagrammatically shown in FIG. 2 also, and which is accommodated in the lower reservoir compartment 23a of the chamber 23 with which the outlet conduits 28 and 28a (the former with the pump 27) are in communication.
  • the arrangement 62 may be used to switch on the pump 27, or to cause it to speed up operation, or
  • valve 32 in the conduit 33 or a valve in the conduit 2l-through which a mixture of flushing water and spent developer liquid is discharged during the flushing operation.
  • This is to take place as soon as the level of liquid in the reservoir 23c reaches a certain predetermined level, the purpose to be sure that overflowing of the compartment 23 by liquid issuing from the conduit or conduits 33 and/or the conduit or conduits 21 is prevented.
  • reference numeral 53 is again representative of the source of electrical supply
  • reference numeral 63 designates a transformer the primary side of which is connected with the source 53.
  • a circuit 64 connected with the source 53 also includes the motor 65 of the pump 27, which can be energized or deenergized by a switch 66 closing the motor circuit.
  • Conductors 67 and 68 are connected with the secondary side of the transformer 63 and the conductor 67 extends to an electrode 69 acting as a feeler and which may for instance be a negative electrode, whereas at the conductor 68 with its branch conductor 68a and 68b is electrically connected with two additional feeler electrodes 70 and 71 which may be positive if the electrode 69 is negative.
  • the electrodes have contacts 72, 73 and 74, respectively, which extend from above to different levels into the reservoir 23a.
  • a relay 75 provides for a connection of the circuit with the electrodes 70 and 71, and via a switch 76 arranged after the relay 75 with the electrode 70. If the switch 76 is closed, the electrode 70 is connected with the conductor 68.
  • a further conductor 68c extends to a third positive feeler electrode 78 having a contact 79.
  • a relay 77 is interposed in the conductor 680.
  • FIG. 6 indicates that the contacts 72, 73 74 and 79 are located at different levelsin the reservoir.
  • a switch 80 interposed in a circuit 81 is activated by relay 77, and the circuit may be utilized to for instance energize or deenergize a magnet 82 of a magnet valve 32 in the conduit 33, as well as to activate or deactivate a switch 83 in a circuit 84 which triggers a warning signal 85.
  • a warning signal 85 for instance an optical or an acoustical signal which indicates that the outflow of liquid from the reservoir 23a does not take place properly and that there is a danger that overflowing might occur. This will then result in alerting the operator to the'fact that necessary corrective measures must be taken at once.
  • FIG. 7 it will be seen that in the portion 70 thereof there is shown the console with the tanks 11, the pumps and 16 and the conduit 17.
  • the front wall of the console and one of the side walls 86 have been shown partially removed for the sake of clarity.
  • An upper portion 87 (shown in FIG. 7b) can be placed atop the console 10 and contains the supplying means 19 with the containers 20.
  • All control elements necessary for controlling the operation ofthe apparatus are mounted at the front wall of the console, including a program control device 88 which can accept a control card 89 on which the computer program for the program-controlled operation of the apparatus may be encoded, for instance in form of punches, magnetically or otherwise.
  • a series 90 of switches for instance pushbutton switches, permits a selection of the metered quantities of chemicals, by selecting the respective feeler 44 in response to depressing of the appropriate switch.
  • Reference numerals 10, ll, 88 and 90 designate the components previously discussed.
  • the upper portion 87 of the assembly accommodates the components 88 and 90.
  • a unit 9i is placed onto the right-hand compartment on the righthand console 10 and may also serve to accommodate tanks 11.
  • Two pivotable overflow tubes 21 are provided which can discharge into the (not illustrated in FIG-8) inlet funnels which supply the metered chemicals into the units 24 located in a console 92 surrounding the developing chamber 23.
  • ventilator 93 serves the purpose of circulating the air through the console or consoles 10 to maintain the temperature therein as constant as possible.
  • Channels are provided between the tanks and the walls ofthe console or consoles Ill and a channel94 connects these with the ventilator 93' so that the latter can passair around the tanks 11.
  • a heating device 95 and a cooling device 96 both well known in the art, can be provided.
  • a compressor 97 serves to remove heat from the cooling device 96.
  • a thermostat 98 is provided sensing the temperature in the console or consoles 10 and controlling the operation of the devices 93, 95 and 96in order to maintain the desired temperature constant.
  • a drip pan 100 which can receive condensation.
  • a timer 900 can be connected into the circuit in order to vary the programmed control times.
  • An individual tank 11 is shown in diagrammatic section in the upper portion 91 shown in FIG. 1, and the liquid chemicals in the tank 11 are designated with reference numeral 11a.
  • a float 101 is provided which prevents the entry of air to the chemicals, because this could result in deterioration of the chemicals.
  • a dust cover 102 is provided which prevents the entry of dust or other contaminants into the interior of the tank 11.
  • a combination comprising a film developing unit; a source of developer; supplying means for supplying metered quantities of developer from said source to said unit; selecting means operatively associated with said supplying means for selecting the magnitude of said metered quantities; sensing means for sensing the developer content in said supplying means and for controlling operation of said supplying means in dependence upon the sensed content and within the magnitude selected by said selecting means; and signal-generating means for generating a control signal for controlling the inflow of medium into said unit in response to the contents of said unit exceeding a predetermined level, and for also generating a warning signal at least substantially simultaneously with said control signal.
  • said supplying means comprising at least one container and communicating with said unit for permitting the flow of developer to the latter; and wherein said sensing means comprises electric circuit means including two feelers extending into said container and, each having a free end located at a different predetermined level therein, said electric circuit means being operative for interrupting the flow of developer to said unit in response to the level of developer in said container reaching one of said free ends.
  • circuit means including a source of electrical energy, each of said feelers being connected with one pole of said source of electrical energy; and wherein said circuit means further includes an electrode in said container connected with the other pole of said source of electrical energy and having a free end portion located at least at the lowest of said predetermined levels.
  • said operating means comprises an electromagnet controlled by said sensing means.
  • said programming means including switching means operative for selecting different programs.
  • a combination comprising a film developing unit; a source of developer; supplying means for supplying metered quantities of developer from said source to said unit; selecting means operatively associated with said supplying means for selecting the magnitude of said metered quantities; sensing means for sensing the developer content in said supplying means and for controlling operation of said supplying means in dependence upon the sensed content and within the magnitude selected by said selecting means; and signal-generating means for generating a control signal for controlling the inflow of medium into said unit in response to the contents of said unit' exceeding a predetermined level, said unit having areser-' voir for said developer, and said signal-generating" means being at least in part located in said reservoir.
  • said signalgenerating means comprising an electric circuit and a plurality of electrode members connected in said circuit and having free ends located at different levels in said reservoir.
  • thermostatically controlled means comprising heatexchange means.
  • thermostatically means further comprising circulating means for circulating air in contact with at least said source.
  • a combination comprising a film developing unit; a source of developer; supplying means for supplying metered quantities of developer from said source to said unit, said supplying means comprising at least one container and communicating with said unit for permitting flow of developer to the latter; selecting means operatively associated with said supplying means for selecting the magnitude of said metered quantities; and sensing means for sensing the developer content in said supplying means and for controlling operation of said supplying means in dependence upon the sensed content and within the magnitude selected by said selecting means, said sensing means comprising electric circuit means including two feelers extending into said container and each having a free end located at a different predetermined level therein, said feelers each including a conductive electrode member and a'tubular member surrounding said electrode member electrically insulated therefrom and having a bevelled tip, and said circuit means being operative for interrupting the flow of developer to said unit in response to the level of developer in said container reaching one of said free ends.
  • each of said feelers includes electrically insulating means interposed between the respectively associated tubular and electrode members and terminating inwardly of the respective open bevelled tip.
  • a combination comprising a film developing unit; a source of developer, including a reservoir; supplying means for supplying metered quantities of developer from said source to said unit; selecting means operatively associated with said supplying means for selecting the magnitude of said metered quantities; sensing means for sensing the developer content in said supplying means and for controlling operation of said supplying means in dependence upon the sensed content and within the magnitude selected by said selecting means; a pump; and signal-generating means for generating a control signal for controlling the inflow of medium into said unit in response to the contents of said unit exceeding a predetermined level, said signal-generating means controlling said pump so that the latter removes contents from said unit in response to generation of said control signal and at least until the level of contents has dropped below said predetermined level, said signal-generating means comprising an electric circuit and a plurality of electrode members connected in said circuit and having free ends located at different levels in said reservoir for said developer, including a first electrode member having its free end located at the highest level to which liquid is to
  • said supplying means further comprising a container, at least one conduit communicating with an upper end of said container, and having an outlet portion provided with a discharge opening directed into said container, a conduit portion extending downwardly of said upper end outside said container, and a bend portion connecting said outlet portion and said conduit portion; said pump being interposed in said conduit portion.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
US00331986A 1972-02-16 1973-02-12 Apparatus for developing photographic materials Expired - Lifetime US3846818A (en)

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DE2207137A DE2207137A1 (de) 1972-02-16 1972-02-16 Anlage zur entwicklung fotografischen materials

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US (1) US3846818A (enExample)
JP (1) JPS4897537A (enExample)
DE (1) DE2207137A1 (enExample)
FR (1) FR2172368B3 (enExample)
GB (1) GB1377461A (enExample)
IT (1) IT977306B (enExample)

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US4012753A (en) * 1975-05-02 1977-03-15 Cubic Productron, Inc. Film processor
US4035818A (en) * 1974-12-11 1977-07-12 The King Concept Corporation Color print or film processor
US4165186A (en) * 1976-11-15 1979-08-21 Lyle J. Bricker Photographic chemical mixing system
US4197000A (en) * 1978-05-23 1980-04-08 Fsi Corporation Positive developing method and apparatus
US4219269A (en) * 1977-12-02 1980-08-26 Johannes Bockemuehl Developing drum for photographic material
US4284343A (en) * 1978-08-12 1981-08-18 Hoechst Aktiengesellschaft Apparatus for the electric level control of a developing solution in a storage tank
US4286541A (en) * 1979-07-26 1981-09-01 Fsi Corporation Applying photoresist onto silicon wafers
US4577948A (en) * 1982-10-21 1986-03-25 Vickers Plc Method and apparatus for controlling the processing of radiation sensitive plates with a liquid by monitoring the electrical conductivity of the liquid
EP0101559A3 (en) * 1982-07-20 1986-08-20 Fotomec - San Marco S.P.A. A device for automatically metering chemical products in a developing machine
FR2594239A1 (fr) * 1986-02-10 1987-08-14 Noritsu Kenkyu Center Co Appareil de traitement de materiaux photosensibles
US5023643A (en) * 1990-02-15 1991-06-11 Wing-Lynch, Inc. Automatic photo processor
US5867747A (en) * 1997-03-10 1999-02-02 Wing-Lynch, Inc. Automatic film processor

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JPS59136642U (ja) * 1983-02-28 1984-09-12 日本電産コパル株式会社 オ−トデベロツパ−の現像処理液用タンクの液量検出機構
GB2154905A (en) * 1984-03-05 1985-09-18 David Theodore Nels Williamson Photographic colour print processing equipment
US4769217A (en) * 1985-04-29 1988-09-06 Servomex Company Apparatus for measuring content of organic carbon
US5381203A (en) * 1993-05-03 1995-01-10 Eastman Kodak Company Textured surface with canted channels for an automatic tray processor
US5400107A (en) * 1993-05-03 1995-03-21 Eastman Kodak Company Automatic replenishment, calibration and metering system for an automatic tray processor
US5339131A (en) * 1993-05-03 1994-08-16 Eastman Kodak Company Automatic replenishment, calibration and metering system for a photographic processing apparatus

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US3280716A (en) * 1963-10-17 1966-10-25 Gall Kurt Method of and apparatus for processing photographic materials
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US3517600A (en) * 1967-06-08 1970-06-30 Derrick Sunnucks Woollacott Apparatus for processing photographic materials
US3550521A (en) * 1967-02-06 1970-12-29 Serge Carrie Apparatus for processing photographic material
US3633487A (en) * 1968-08-31 1972-01-11 Herbert Reinhold Langkopf Apparatus for processing photographic material

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US3280716A (en) * 1963-10-17 1966-10-25 Gall Kurt Method of and apparatus for processing photographic materials
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US3491675A (en) * 1967-05-08 1970-01-27 Polaroid Corp Photographic treating apparatus
US3517600A (en) * 1967-06-08 1970-06-30 Derrick Sunnucks Woollacott Apparatus for processing photographic materials
US3633487A (en) * 1968-08-31 1972-01-11 Herbert Reinhold Langkopf Apparatus for processing photographic material

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4035818A (en) * 1974-12-11 1977-07-12 The King Concept Corporation Color print or film processor
US4012753A (en) * 1975-05-02 1977-03-15 Cubic Productron, Inc. Film processor
US4165186A (en) * 1976-11-15 1979-08-21 Lyle J. Bricker Photographic chemical mixing system
US4219269A (en) * 1977-12-02 1980-08-26 Johannes Bockemuehl Developing drum for photographic material
US4197000A (en) * 1978-05-23 1980-04-08 Fsi Corporation Positive developing method and apparatus
US4284343A (en) * 1978-08-12 1981-08-18 Hoechst Aktiengesellschaft Apparatus for the electric level control of a developing solution in a storage tank
US4286541A (en) * 1979-07-26 1981-09-01 Fsi Corporation Applying photoresist onto silicon wafers
EP0101559A3 (en) * 1982-07-20 1986-08-20 Fotomec - San Marco S.P.A. A device for automatically metering chemical products in a developing machine
US4577948A (en) * 1982-10-21 1986-03-25 Vickers Plc Method and apparatus for controlling the processing of radiation sensitive plates with a liquid by monitoring the electrical conductivity of the liquid
FR2594239A1 (fr) * 1986-02-10 1987-08-14 Noritsu Kenkyu Center Co Appareil de traitement de materiaux photosensibles
US5023643A (en) * 1990-02-15 1991-06-11 Wing-Lynch, Inc. Automatic photo processor
US5867747A (en) * 1997-03-10 1999-02-02 Wing-Lynch, Inc. Automatic film processor

Also Published As

Publication number Publication date
IT977306B (it) 1974-09-10
JPS4897537A (enExample) 1973-12-12
DE2207137A1 (de) 1973-08-30
FR2172368B3 (enExample) 1976-02-13
GB1377461A (en) 1974-12-18
FR2172368A1 (enExample) 1973-09-28

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