US3120792A - Photographic apparatus - Google Patents

Photographic apparatus Download PDF

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Publication number
US3120792A
US3120792A US93656A US9365661A US3120792A US 3120792 A US3120792 A US 3120792A US 93656 A US93656 A US 93656A US 9365661 A US9365661 A US 9365661A US 3120792 A US3120792 A US 3120792A
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Prior art keywords
tube
fluid
sheets
photosensitive
sheet
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Expired - Lifetime
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US93656A
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English (en)
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Herman E Erikson
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Polaroid Corp
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Polaroid Corp
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Priority to US93656A priority Critical patent/US3120792A/en
Priority to GB7615/62A priority patent/GB940103A/en
Priority to GB22619/63A priority patent/GB940104A/en
Priority to BE614692A priority patent/BE614692A/fr
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Publication of US3120792A publication Critical patent/US3120792A/en
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/48—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus
    • G03B17/50—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus
    • G03B17/52—Details of cameras or camera bodies; Accessories therefor adapted for combination with other photographic or optical apparatus with both developing and finishing apparatus of the Land type

Definitions

  • This invention relates to photographic apparatus for exposing photosensitive sheet material and treating the exposed photosensitive sheet material with a fluid and, more particularly, to apparatus of the type wherein the exposed photosensitive sheet is superposed with a second sheet and the fluid is distributed between the superposed sheets.
  • the present invention may be incorporated in apparatus, such as a camera, which performs the functions of both photographically exposing ,and then processing the light-sensitive sheet material to produce visible photographic images; or ythe invention may be incorporated in apparatus for only treating light-sensitive materials which have been exposed by some other means.
  • Processing of the photosensitive sheet is resumed by superposing the photosensitive sheet with a second sheet and spreading 'a processing iluid which is preferably quite viscous in a thin layer between (the superposed sheets.
  • Superpositioning of the sheets and spreading of the fluid is accomplished by passing the sheets between a pair of pressure-applying members which guide ⁇ the sheets along convergent paths into superposition with one another.
  • the iiuid is supplied to and preferably distributed within a space between the sheets formed by convergent portions thereof in the region where the sheets enter between-the pressure-applying members during movement of the sheets relative to and between the pressure-applying members.
  • An vobject of the invention is to provide, in photographic apparatus of the type described, novel and improved means for supplying and dispensing a photographic processing iiuid for distribution between a pair of superposed sheets.
  • Another object of the invention is to provide apparatus of the type described wherein the iiuid is provided in an elongated tube and including means for opening the tube, means for ejecting the Huid contents of the'tube therefrom and means for conducting the fluid at 'a predetermined rate to a space between the sheets for spreading therebetween.
  • rllhe invention accordingly comprises the apparatus possessing the construction, combination of elements and arrangement of parts which ⁇ are exemplified in the following detailed disclosure, and the ⁇ scope of the application of which will be indicated in the claims.
  • FIGURE 1 is a sectional, plan view of photographic apparatus in the form of a camera embodying the invention
  • FIG. 2 is a sectional view taken substantially along the line 2 2 of FIG. 1;
  • FiG. 3 is a somewhat schematic plan view of apparatus embodying the invention.
  • FIGS. 4 and 5 are sectional views taken respectively along the -lines 4 4 and 5 5 of FIG. 3;
  • FlG. 6 is a perspective view of another embodiment of apparat-us incorporating the invention.
  • yFlG. 7 is a fragmentary sectional view taken through the apparatus of FIG. 6;
  • FIG. 8 is a sectional View taken substantially along the line 8 8 of FiG. 7.
  • the apparatus of the invention is illustrated in NGS. l and 2 in the form of a camera for photographically exposing and thereafter processing an elongated photosensitive sheet by superposing the exposed photosensitive sheet with a second sheet, :and spreading fa fluid processing composition in a thin layer between the superposed sheets.
  • the photosensitive sheet comprises a layer of ⁇ a photosensitive material, such as la gelatino silver halide emulsion in which a latent image can be produced by differentially exposing the emulsion to actinic light, carried on a suitable support or backing.
  • the second sheet is preferably adapted to serve as a support for an image-receptive layer in which a visible positive print is formed from a latent image in the photosensitive layer.
  • the processing composition when spread in -a thin layer between the photosensitive and second sheets, eifectuates a silver halide diffusion-transfer reversal process by which a latent image in the photosensitive sheet is Ideveloped and a positive print is produced in the second sheet.
  • a processing composition for this purpose contains an aqueous solution of a silver halide developer such as hydroquinone, a silver halide solvent such as sodium thiosulfate, and an alkali such as sodium hydroxide.
  • the sheets are maintained in superposition with the layer of processing composition interposed between them during a predetermined processing period during which exposed silver halide of the photosensitive strip is reduced to silver and unreduced silver halide forms a water-soluble complex which is diffused through the layer of fluid
  • the camera shown in FIGS. 1 and 2 may be designed and employed to make a sequence of discrete exposures (and prints) either in rapid succession, as in the case of motion pictures, or at intervals of any duration; or it may be employed to make a continuous trace type of exposure. Accordingly, the apparatus is designed to supply and distribute the processing uid both lcontinuously and/ or intermirttently, depending on the frequency and type of exposure given the photosensitive material rand whether or not it is desired to process the photosensitive material immediately following exposure.
  • the basic components of the camera are a housing 12 in which is mounted a spool 14 holding a supply of a photosensitive sheet 16 and a second sheet 18.
  • the photosensitive and second sheets are provided coiled in superposition with one another with the surfaces thereof located in the same relationship as during subsequent processing.
  • the apparatus includes means for eX- posing the photosensitive sheet and means for locating the photosensitive sheet in proper position for exposure and, in the form shown, these means comprise, respectively, a lens 20 and a support plate 22 positioned for supporting the photosensitive sheet at the focal surface of the lens.
  • a suitable shutter mechanism (not shown) may be provided in association with the lens.
  • a pair of guide rolls 24 and 26 are provided located in juxtaposition adjacent an edge of support plate 22.
  • a third guide roll 28 is provided adjacent the opposite edge of support plate 22 from guide roll 26 and the photosensitive and second sheets extend from spool 14 between guide rolls 24 and 26 where the photosensitive and second sheets are separated from one another and the photosensitive sheet extends across support plate 22 between the latter and guide roll 28 in position for exposure.
  • a fourth guide roll 30 is provided located adjacent spool 14 and toward the opposite side of housing 12 from guide roll 26. Second sheet 18 extends from guide roll 26 ⁇ where the second sheet is superposed with the photosensitive sheet toward and around guide roll 30, the latter cooperating with guide rolls 26 and 23 to effect the separation of the photosensitive and second sheets to permit exposure of the former.
  • the means for superposing the photosensitive and second sheets, following exposure of the photosensitive sheet, and distributing a processing fluid between the sheets comprise a pair of pressure-applying members in the form of juxtaposed rolls 32 and 34, mounted within the housing at a location diagonally opposite guide rolls 24 and 26.
  • Photosensitive and second sheets 16 and 18 extend, respectively, from guide rolls 28 and 30 into superposition -between pressure-applying rolls 32 and 34.
  • rolls 24 and 26 are provided with a friction drag or brake tending to retard their rotation in response to movement of the photosensitive and second sheets therebetween.
  • a mirror 36 is provided for bending, at right angles, the optical path of light between lens 20 and the focal surface of the lens located at support plate 22. Accordingly, the optic axis of lens 20 lies in a plane parallel to the focal surface of the lens, and mirror 36 is mounted within the camera so that its plane reiiecting surface is located at 45 with respect to the focal surface and optical axis of the lens, and the mirror, in this position, is surrounded on four sides by the photosensitive and second sheets.
  • Camera includes a fluid supply and feeding device
  • ydesignated 40 for holding a quantity of processing iiuid rolls, the latter cause the iluid to be distributed in a thin layer of uniform predetermined depth between the sheets to form a sandwich in which processing of the photosensitive sheet occurs.
  • This sandwich in the form shown, is advanced immediately as it is formed from between the pressure-applying rolls and from the camera housing through an opening 38 provided therein for this purpose.
  • the fluid spread between the sheets also functions to adhere the two sheets to one another and, in order to allow for processing of the sheets in the presence of light, both the photosensitive and second sheets are opaque to actinic light or are provided with outer layers which prevent actinic light from reaching the photosensitive layer of the photosensitive sheet.
  • These sheets being light opaque, offer the further advantage of a lighttight assembly when coiled on spool 14 so that the spool may be handled in the light without exposing the photosensitive sheet coiled thereon.
  • the fact that the photosensitive and second sheets can be processed in the light offers several advantages including, for example, a camera structure which can be operated manually merely by pulling on a portion of the superposed photosensitive and second sheets projecting through opening 38 from the camera.
  • this area may be immediately separated from the area of the second sheet superposed therewith and/or the portions of the two sheets comprising the superposed areas may be separated from other portions of the two sheets.
  • FIGS. 3 through 5 of the drawings wherein there is illustrated a fluid supply and feeding device 40 incorporating the invention.
  • the processing fluid is supplied in a thin-walled, elongated, flexible tube 42, the tube preferably being of sufficient length and diameter to contain processing lluid in an amount sufficient to effect the treatment of the photosensitive sheet supplied on spool 14.
  • Materials suitable for tube 42 include rubber and the organic plastics, particularly those which can be formed by extrusion processes.
  • the crosssectional profile of tube 42 may be of any convenient shape, circular being preferable, and is uniform throughout the length of the tube so that the quantity of fluid contained in any particular section of the tube is equal to the quantity of uid contained in any other section of the tube of equal length.
  • a closure in the form of a plug 44 and a compression ring 46 is provided at the trailing end of the tube.
  • any form of closure capable of withstanding the pressures generated within the liuid is acceptable; and such closures include pinching the tube at its trailing end and sealing portions of the inner wall to one another to retain the pinched end in a closed condition.
  • a nozzle 50 comprising a body having a divergent passage 52 opening at lips 54 which are shaped to tit against the sheets as they enter between the pressure-applying rolls at the bite of the rolls.
  • the width of passage 52 at lips 54 is preferably equal to the width of the area of the photosensitive sheet in contact with which the fluid is to be distributed by the pressureapplying rolls.
  • a tubular conduit 56 Connected to passage 52 within nozzle 50 is a tubular conduit 56 having at least a straight portion located wit-hin duid-containing tube 42.
  • Conduit 56 has an external cross-sectional profile corresponding to the internal profile of the tube.
  • the profiles of the conduit and tube are circular, and the tube has an external diameter which is at least equal to the internal diameter of the fluid-containing tube.
  • the conduit is open at its end so that movement of the fluid-containing tube with respect to and along the outside of conduit 56 will cause the fluid contents of the fluid-containing tube to be conducted therefrom through conduit 56 to the passage 52 of nozzle 5th
  • the iluid supply and feeding device includes a cutting member 58 which extend-s from outside of tube 42 into the tube into engagement with a portion of conduit 56 located within tube 42.
  • Member 5S comprises a thin blade extending axially with respect to tube i2 and conduit 56 and having a sharpened edge against which tube 4t2 is moved for slitting the tube to allow the latter to be moved with respect to and in surrounding relation to conduit 56.
  • the conduit is curved so as to project from the tube through the slit and is connected to the nozzle.
  • the lluid supply and feeding device also includes a pair of drive rollers 6ft and l62 for drawing tube 42 against cutting member 58 and conduit 56 so as to slit the tube and cause its fluid contents to be ejected therefrom through conduit 56.
  • the tube extends from the conduit between drive rollers dit and l62 which engage the slit and emptied tube and rotate for moving the tube with respect to the cutting member and fluid conduit.
  • the tube, following slitting, is compressed between drive rollers 6h and 62 so that very little space is occupied by the emptied tubing and it can be easily stored on a take- "up spool (not shown) provided for this purpose.
  • the rate of feeding of the fluid to the photosensitive and second sheets is primarily a function of the diameter of tube 42 and the linear -rate of movement of the tube with respect to conduit de.
  • the liuid which is quite viscous, is required to flow through a relatively short distance so that pressure losses are reduced to a minimum, and the pressure of the fluid and, hence, its rate of llow, can be controlled more accurately.
  • the rate of feeding of the lluid to the superposed sheets is adjusted so that the amount of fluid fed is just suliicient to provide a layer of the desired thickness and area between the superposed sheets. Accordingly, the diameter of the tube, the linear rate of movement of the'tube and the linear rate of movement of the sheets are all corelated so that the apparatus ⁇ can be provided a single drive mechanism coupled with the pressure-applying rolls and the tube drive rollers for simultaneously rotating both sets of rollers at speeds bearing a fixed relationship.
  • Pressure-applying rolls 32 and 3ft are positioned in juxtaposition with their axes substantially parallel and located in a plane.
  • the pressure-applying rolls may be ⁇ cornpliantly mounted for movement within the plane toward and away from one another, in which case, they are biased toward one another, -or thepressure-applying rolls maybe lixedly mounted with respect to one another so yas to provide a gap of predetermined uniform depth between their adjacent surfaces.
  • the thickness of the layer of iluid is a function of the depth of the gap between the rolls and the thickness of the two sheets.
  • the thickness of the layer of fluid is also a function of the viscosity and, hence, temperature of the fluid so that the fluid spreading components of the apparatus, i.e., the pressure-applying rolls, can be compensated for temperature by the provision of means responsive to changes in temperature for varying either the pressure applied by the rolls or the depth of the gap therebetween.
  • At least one of the rolls is preferably provided with shoulders at its ends for engaging and compressing the marginal portions of the superposed sheets so as to prevent the i'iuid from being spread from between the ⁇ lateral margins of the sheets and thereby confining the 6 Sti is substantially equal in width to the area of the sheets between which the fluid is to be spread, and the passage itself is constructed so as to promote the uniform distribution of the fluid within the passage at the mouth thereof.
  • passage 52 is provided, in the form shown in FIG. 5, with ridges 64 extending transversely of the direction of flow of the iiuid through the passage for inhibiting the How of fluid so as to cause the outward or divergent distribution of the fluid from the point at which the fluid enters passage 52 from conduit 56.
  • the sheets may be advanced at a slow rate or intermittently between the pressure-applying members in engagement with lips 5dof nozzle 5d. In instances where the sheets are moved at a slow rate, it is desirable that the fluid be prevented from contacting at least the photosensitive sheet until the sheets are properly superposed so that processing and image formation does not begin to occur until the inner surfaces of the sheets are in the desired superposed relationship. ln the form shown in FIG. 5, lips 54, in addition to being shaped to conform to the curvature of the sheets as they enter between the bite of the pressure-applying rolls, are formed of a very flexible material and taper to a thin edge.
  • lips 5din Materials suitable for the fabrication of lips 5dinclude rubber, and particularly silicon rubbers, inasmuch as adherence of the fluid to the lips should be prevented.
  • the provision of thin flexible lips for the nozzle olfers a further advantage when the apparatus is to be employed intermittently. When feeding of the fluid is discontinued, the fluid 1ocated between the lips tends to adhere the lips to one another providing a seal for passage 52, which seal is easily ruptured when feeding of the fluid is recommenced.
  • FIG. 6 Another form of liuid supply and feeding device 40 is illustrated in FlGS. 6 through 8 of the drawings.
  • This device comprises not only a nozzle and means for opening the tube and conducting its fluid contents to the nozzle, but means for holding a supply of the fluid filled tube, means for moving the fluid filled tube so as to eject its iuid contents, and means for storing the tube following ejection of its liuid contents.
  • the device comprises a nozzle 7i) having a passage 72 and lips 74 at the exit end of the passage. Coupled with nozzle 7i) is a block 7o having a bore 7S therethrough shaped to conform to the outside of fluid filled tube 42.
  • both the bore and the tube are cylindrical, the former having an internal diameter substantially equal to the external diameter of the tube.
  • a pair of resilient O-rings e@ are provided in bore 78 adjacent its ends for engaging tube 42 and providing a seal between the bore and the tube.
  • Mounted within bore '73 is a slitting member 82 against which tube 42 can be moved through the bore for slitting the tube longitudinally.
  • a container 8d for a supply of iiuid filled tube 42 is coupled with block 76 and nozzle 7@ adjacent one end of bore 73 and a guide roll S6 is provided mounted on a support member 3 comprising block 'i6 and nozzle 7d in alignment with the opposite end of bore 73 for guiding the tube from container 84 through the bore and around roll S6 to take-up spool t) mounted on support member 8S.
  • Bore 73 is coupled with passage '72 of nozzle 70 so that the fluid contents of tube l2 may be ejected from the tube directly into passage 72.
  • a rod 92 which extends into tube 42 at the exit end of bore 7S to a position adjacent passage 72.
  • Rod 92 has an outside diameter at least equal to the inside diameter of the tube so that the rod functions as a piston within the tube for causing the ejection of the liuid contents of the tube therefrom into passage 72.
  • Rod 92 is preferably mourned for axial movement within the tube between an open position, shown in FIG.
  • means other than rod 92 may be provided for causing the ejection of the fluid contents of the tube through the slit therein into passage 72.
  • Such means may include, for example, a constriction in bore '78 or a pair of pressure-applying members for engaging the tube and compressing the latter so as to eject the fluid contents of the tube therefrom.
  • Both forms of fluid supply and feeding devices are initially provided with the tube disposed in the positions shown in the drawings, that is, with a portion of the tube slit and located, as the case may be, around conduit 56 or within bore '78 around rod 92.
  • the tube extends from the bore around guide roll 86 to take-up spool 90 and means are provided in the apparatus for cooperating with the take-up spool for rotating the latter to advance the tube from container S4 through bore 7S and block '76 around rod 92 to guide roll 86 and from there on to the take-up spool.
  • the slit tube is flattened at the take-up spool so that it occupies very little space on take-up spool 90, and the drive mechanism of the apparatus may be provided With a roll which cooperates with roll 86 for compressing the tube and aiding in the advancement of the tube.
  • the fluid supply and feeding device is designed and may be constructed of materials which render it expendable, that is, the device may be loaded into the apparatus to effect the processing of a length of photosensitive sheet and, when the fluid contents of the tube have been expended, the entire device including the collapsed tube may be discarded.
  • Photographic apparatus for exposing, and thereafter treating with a fluid, photosensitive sheet material
  • said apparatus comprising, in combination, means for photographically exposing a photosensitive sheet, means for conducting said photosensitive sheet through an exposure position wherein said photosensitive sheet is photographically exposed by said iirst-mentioned means into superposition with a second sheet, means for superposing said photosensitive and second sheets and distributing a Huid in a layer between said superposed sheets, a nozzle for conducting said fluid to a space between said sheets adjacent the last-mentioned means, opening means, means for moving an elongated tube containing said fluid lengthwise relative to said opening means to form a lengthwise opening in said tube, means for so engaging said tube during movement thereof with respect to said opening means as to cause the ejection of said fluid from said tube through said opening, and means for conducting said uid from said tube through said opening to said nozzle.
  • the last-mentioned means for conducting said iluid from said tube to said nozzle comprises a substantially rigid tubular conduit having an external, cross-sectional profile corresponding to the profile of the inner surface of said tube, said conduit extending from said nozzle through said opening into said tube adjacent one side of said opening means and including an open end section extending within saidtube in a direction opposite the direction of movement of said tube to the opposite side of said open- ⁇ ing means.
  • Photographic apparatus for exposing, and thereafter treating with a iluid, photosensitive sheet material
  • said apparatus comprising, in combination, means for photographically exposing a photosensitive sheet, means for conducting said photosensitive sheet through an exposure position wherein said photosensitive sheet is photographically exposed by said rst-mentioned means into superposition with a second sheet, means for superposing said photosensitive and second sheets and distributing a fluid in a layer between said superposed sheets, aY nozzle for conducting said fluid to -a -space between said sheets adjacent the last-mentioned means, means disposed in surrounding relation to a portion of an elongated tube containing said fluid and providing a passage 4through which said tube is movable, cutting means mounted within said passage, means for moving said tube through said passage against said cutting means to form a lengthwise opening in said portion of said tube located within said passage, means providing a conduit connecting said nozzle with said passage adjacent said cutting means, and a closure member mounted in closing relation within said portion of said tube within said passage and located to the
  • closure member is movable within said tube from said location to the opposite side of said conduit from said cutting means to a location on the same side of said conduit as said cutting means for closing said conduit and preventing the ow of said uid from said tube through ysaid conduit to said nozzle.
  • Photographic apparatus for exposing, and thereafter treating with a iluid, photosensitive sheet material
  • said apparatus comprising, in combination, means for photographically exposing a photosensitive sheet, means for conducting said photosensitvie sheet through an exposure position wherein said photosensitive sheet is photographically exposed by said first-mentioned means, and conducting said photosensitive sheet and a second sheet along convergent paths into superposition with one another, a pair of juxtaposed pressure-applying members for engaging therebetween said photosensitive and second sheets to superpose said sheets and distribute a iluid in a thin layer between said superposed sheets, a nozzle for conducting said uid to a space between said sheets where said sheets converge upon entering between said pressureapplying members, a cutting member, means for moving an elongated tube containing said fluid lengthwise relative to and against said cutting member to slit said tube lengthwise during movement of said sheets between said pressure-applying members, means for so engaging said tube during movement thereof with respect to said cutting member as to cause the ejection
  • said means for engaging said tube to cause the ejection of said fluid from said tube through said slit comprises a closure member mounted in closing relation within a slit portion of said tube and held substantially stationary with respect to said cutting member.
  • said conduit extending from said nozzle through said slit into said tube ⁇ adjacent one side of said cutting member and including an open end section extending Within said tube in a direction opposite the direction of movement of said tube to the opposite side of said cutting member'.
  • said means for engaging said tube to cause the ejection of said iiuid from said tube through said slit comprises means for applying compressive pressure to a slit portion of said tube.
  • Photographic apparatus for treating a photogr-aphically exposed light-sensitive sheet with a fluid composition
  • said apparatus comprising, in combination, means for guiding said light-sensitive sheet and a second sheet into superposition and distributing a fluid in a iayer between the superposed sheets, a nozzle for conducting said uid to a space between said sheets adjacent the firstmentioned means, cutting means, means for moving an elongated tube containing said fluid lengthwise relative to and against said cutting means for opening said tube, means for so engaging said tube during movement thereof with respect to said cutting means as to cause the ejection of said fluid from said tube through the opening therein formed by said cutting means, and means for conducting said fluid from said tube through said opening to said nozzle.
  • said conduit being connected to said nozzle, extending through said opening into said tube adjacent one side of said cutting means and including an open end section extending within said tube in a direction opposite the direction of movement of said tube to a location at the opposite side of said cutting means.
  • Photographic apparatus Vfor Itreating a photographically exposed photosensitive sheet with a fluid composition comprising, in combination, means for guiding said photosensitive sheet into superposition with a second sheet, means for superposing said photosensitive and second sheets and distributing a iiuid in a layer between said superposed sheets, a nozzle for conducting said uid .to a space between said sheets adjacent the last-mentioned means, means disposed in surrounding relation to ⁇ a portion of an elongated tube containing said fluid and providing a passage through which said tube is movable, cutting means mounted Within said passage, means for moving said tube through said passage against said cutting means to form a lengthwise opening in said portion of said tube located within said passage, means providing a conduit connecting said nozzle with said passage adjacent said cutting means, and a closure member mounted in closing relation -within said portion of said tube within said passage and located to the opposite side ⁇ of said conduit from said cutting means for causing the fluid contents of said tube to be ejected therefrom through said
  • closure member is movable within said tube from said location to lthe opposite side of said conduit from said cutting means to a location to the same side of said conduit as said cutting means for closing said conduit and preventing the iiow of iiuid from said tube through said conduit to said nozzle.
  • Photographic yapparatus for treating a photographically exposed photosensitive sheet with a fluid composition
  • said apparatus comprising, in combination, means for conducting said photosensitive sheet and a second sheet along convergent paths into superposition with one another, a pair of juxtaposed pressure-applying members for engaging therebetween said photosensitive and second sheets to superpose said sheets and distribute a iiuid in a thin layer between said superposed sheets, a nozzle for conducting said fluid -to a space between said sheets where said sheets converge upon entering between said pressureapplying members, a cutting member, means for moving an elongated tube -containing said iluid lengthwise relative to and against said cutting member to slit said tube lengthwise during movement of said sheets between said pressure-applying members, means for so engaging said tube during movement thereof with respect to said cutting member as to cause the ejection of said fluid lfrom said tube through the slit therein, and means for conducting said uid from said tube through said slit to said nozzle.
  • said means for engaging said tube to cause the ejection of said fluid from said tube through said slit comprises a closure member mounted in closing relation within a slit portion of said tube and held substantially stationary with respect to said cutting member.
  • the last-mentioned means for conducting said iuid from said tube to said nozzle comprises a substantially rigid tubular conduit having an external cross-sectional proboard corresponding to the profile of the inner surface of said tube, said conduit extending from said nozzle through said slit into said tube Iadjacent one side of said cutting member and including ⁇ an open end section extending within said tube in a direction opposite the direction of movement of said tube to the opposite side of said cutting member.
  • said means for engaging said tube to cause the ejection of said iiuid from said tube through said slit comprises means for applying compressive pressure to a slit portion of said tube.
  • A. photographic device for supplying and dispensing a photographic processing fluid at a measured rate for distribution between a pair of superposed photographic 1 1 1 2 sheets to effect the treatment of said sheets, said device said opening, and means including a nozzle for conduct-ing comprising, in combination, a exible elongated tube ofizid from said tube .through said opening therein to a substantially uniform internal ⁇ diameter containing said space between said photographic sheets.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Coating Apparatus (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US93656A 1961-03-06 1961-03-06 Photographic apparatus Expired - Lifetime US3120792A (en)

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Application Number Priority Date Filing Date Title
US93656A US3120792A (en) 1961-03-06 1961-03-06 Photographic apparatus
GB7615/62A GB940103A (en) 1961-03-06 1962-02-27 Improvements relating to photographic apparatus
GB22619/63A GB940104A (en) 1961-03-06 1962-02-27 Improvements relating to photographic apparatus
BE614692A BE614692A (fr) 1961-03-06 1962-03-05 Appareil photographique.

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US93656A US3120792A (en) 1961-03-06 1961-03-06 Photographic apparatus

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320865A (en) * 1964-06-30 1967-05-23 Minnesota Mining & Mfg Self-developing photographic camera
US4526456A (en) * 1983-09-02 1985-07-02 Polaroid Corporation Applicator for oxidizable fluid
US4605297A (en) * 1984-12-24 1986-08-12 Polaroid Corporation Method of and apparatus for controlling the application of processing fluid

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558858A (en) * 1948-02-03 1951-07-03 Polaroid Corp Photographic apparatus
US2613851A (en) * 1950-04-27 1952-10-14 Bois Le Roy Du Liquid dispensing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558858A (en) * 1948-02-03 1951-07-03 Polaroid Corp Photographic apparatus
US2613851A (en) * 1950-04-27 1952-10-14 Bois Le Roy Du Liquid dispensing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3320865A (en) * 1964-06-30 1967-05-23 Minnesota Mining & Mfg Self-developing photographic camera
US4526456A (en) * 1983-09-02 1985-07-02 Polaroid Corporation Applicator for oxidizable fluid
US4605297A (en) * 1984-12-24 1986-08-12 Polaroid Corporation Method of and apparatus for controlling the application of processing fluid

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GB940103A (en) 1963-10-23
GB940104A (en) 1963-10-23
BE614692A (fr) 1962-09-05

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