US3745904A - Low-cost roller-type photographic fluid spreading apparatus - Google Patents

Low-cost roller-type photographic fluid spreading apparatus Download PDF

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Publication number
US3745904A
US3745904A US00160364A US3745904DA US3745904A US 3745904 A US3745904 A US 3745904A US 00160364 A US00160364 A US 00160364A US 3745904D A US3745904D A US 3745904DA US 3745904 A US3745904 A US 3745904A
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Prior art keywords
spreader
pair
elements
spreader elements
bearing blocks
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Expired - Lifetime
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US00160364A
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English (en)
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H Bing
C Brayton
L Rubinstein
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Polaroid Corp
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Polaroid Corp
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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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D9/00—Diffusion development apparatus
    • G03D9/02—Diffusion development apparatus using rupturable ampoules of liquid
    • G03D9/025—Diffusion development apparatus using rupturable ampoules of liquid for colour films

Definitions

  • the rollers, bearing blocks and spring elements are mounted on a platform member, preferably formed of a single piece of molded plastic material, which includes a spring latch for releasably retaining the apparatus in the camera, an arrangement for facilitating the assembly of the load springs into their operative positions, a support surface and bridge for guiding the sheet materials between the rollers and an arrangement for resiliently mounting an edge control bar in operative relationship with its bridge.
  • a platform member preferably formed of a single piece of molded plastic material, which includes a spring latch for releasably retaining the apparatus in the camera, an arrangement for facilitating the assembly of the load springs into their operative positions, a support surface and bridge for guiding the sheet materials between the rollers and an arrangement for resiliently mounting an edge control bar in operative relationship with its bridge.
  • Cameras of the self-developing type generally employ a pair of spreader elements which facilitate the formation of a visible image in a photographic sheet by a diffusion-transfer process.
  • a sheet of photosensitive material is first exposed to image-carrying light rays to form a latent image therein.
  • This sheet is subsequently progressively pressed against an image-receiving sheet with a predetermined quantity of a viscous processing fluid being disposed there between.
  • the fluid may initially be releasably stored in a rupturable pod or container attached to one of the photographic sheets.
  • the spreader elements themselves may typically comprise either a pair of rollers, one roller and a rigid non-rolling member, or a pair of rigid non-rolling members.
  • the fluid spreading process is a critical consideration in producing high-quality photographic prints by a diffusion-transfer process.
  • Much effort was required to develop, engineer and manufacture the film units and spreader elements employed in the self-developing cameras currently being marketed.
  • the quality of the finished print provided by these photograohic systems is directly related to the nature of the fluid coating applied to the photographic sheets. In general, the lower the pull-force required to advance the superposed sheet materials between the spreader elements, the more uniform or smooth will be the advance of those sheets through the spreader system. Obviously, the quality of the finished print improves as a function of the uniformity with which the processing fluid is spread between the photographic sheets.
  • An object of this invention therefore is to provide improved photographic apparatus for spreading a processing fluid as a layer between sheets of material.
  • Another object of this invention is to provide apparatus of the type indicated which may be inserted into and removed from cameras of the self-developing type as an integral assembly.
  • a further object of this invention is to provide apparatus of the type indicated which may be utilized to replace fluid spreading apparatus currently employed in commercially available cameras without requiring any alterations to be made to other elements of such cameras.
  • An additional object of this invention is to provide apparatus of the type indicated which may be fabricated in relatively inexpensive assembly operations.
  • a pair of rollers are rotatably supported between spaced apart bearing blocks.
  • one of the rollers is fixedly positioned between the bearing blocks against translational motion while the other is mounted in slotted recesses of the respective blocks so as to establish a predetermined minimum spacing between the sheet contacting facing surfaces of the rollers and, at the same time, to permit a limited amount of movement of one of the rollers in a direction away from the other roller.
  • Supported on each bearing block is a U-shaped spring element which continually urges respective ends of the rollers towards each other.
  • the facing surfaces of the rollers extend a distance substantially equal to the width of the photographic sheet materials and terminate at a point spaced from adjacent sections of the bearing blocks. In this manner any fluid escaping from between the superposed sheet materials as they pass between the rollers will not collect on the facing surfaces themselves.
  • the platform member preferably formed of a single piece of molded plastic material, serves to support and retain the roller-bearing block-load spring elements.
  • This platform member also includes guide and ramp means for facilitating the operative positioning of the load springswith respect to the bearing blocks and rollers during assembly operations.
  • Complementary recess and detent means provided on the springs and bearing blocks serve to releasably retain the springs in their operative positions.
  • the platform member also includes a spring latch, which cooperates with a brace in the camera to releasably retain the fluid spreading apparatus in the camera, and stops for limiting movement of the spring latch to preclude overstressing of same.
  • the platform member further includes a bridge and a support surface, which serve to guide the photographic sheet materials between the rollers, and an edge control bar resiliently mounted on the platform member cooperates with adjacent portions of the bridge to preclude fluid from escaping from between the longitudinal edges of the superposed sheet materials as they pass through the rollers.
  • FIG. 1 is a diagrammatic perspective view of a selfdeveloping camera embodying features of this invention
  • FIG. 2 is an exploded diagrammatic perspective view of the fluid spreading apparatus employed in the camera illustrated in FIG. 1;
  • FIG. 3 is a diagrammatic perspective view of the fluid spreading apparatus employed in the camera illustrated in FIG. 1 with certain portions of that apparatus being shown in phantom; V
  • FIG. 4 is a diagrammatic bottom plan view of the fluid spreading apparatus shown in FIG. 2 with certain parts thereof being shown in phantom;
  • FIG. 5 is a fragmentary sectional view of the fluid spreading apparatus taken generally along line 5-5 of FIG. 1 at such time as a pair of photographic sheets are being advanced therethrough;
  • FIG. 6 is a fragmentary diagrammatic sectional view of the fluid spreading apparatus of FIG. 2 illustrating the initial relationship between one of its load springs and a roller thereof;
  • FIG. 7 is a view similar to FIG. 6 illustrating a different embodiment of the fluid spreading apparatus of this invention.
  • the present invention is depicted as forming part of a selfdeveloping camera 10. More specifically, the camera 10 diagrammatically illustrated in FIG. 1 of the drawings compromises an aforementioned Colorpack II" camera produced by the Polaroid Corporation of Cambridge, Massachusetts with its original fluid spreading system or apparatus replaced by the fluid spreading system or apparatus 12 of the present invention.
  • the camera 10 is basically constituted by a main camera body 14 to which a back body member 16 is pivotally connected.
  • a film pack (not shown) containing a sufficient quantity of photographic materials to produce a plurality of reflective photographic prints.
  • These film packs may, for example, be identical to those currently marketed by the Polaroid Corporation of Cambridge, Massachusetts and identified as Land Pack Film Type 107 (black-andwhite film) or Polacolor Land Film Type 108 (fullcolor film).
  • Land Pack Film Type 107 black-andwhite film
  • Polacolor Land Film Type 108 fullcolor film
  • each film unit contains a relatively thick, stifi' sheet of image-receiving material 18, a relatively thin, flexible sheet of photosensitive image-recording material 20 and a rupturable pod (not shown) of processing fluid 22 (See FIG. 5). Additionally, each such film unit includes other components not illustrated in the drawings such as a mask, a bib, a leader, a tab, traps and a pair of rails respectively positioned along the longitudinal edges of one of the photographic sheet materials.
  • a lens and shutter housing 24 Forming part of the main camera body 14 is a lens and shutter housing 24.
  • This housing 24 is mounted at the outer end of a light-tight sleeve 26 which serves to fixedly position the cameras lens 28 a predetermined distance from the cameras film plane and to provide a light-tight optical path therebetween.
  • Attached at one side of the main camera body 14 is a rangefinderviewfinder 30 that has been shown in phantom so as not to obstruct the view of certain other portions of the camera 10.
  • the cameras back body member 16 may be pivoted to its closed position where it cooperates with the main camera body 14 to form a light sealed chamber adapted to facilitate film exposure and processing operations.
  • a bail 32 pivotally connected to the back body member 16 serves to releasably attach the two body members 14 and 16 one to the other.
  • this apparatus l2 basically comprises nine components, i.e., a pair of roller-type spreader elements 34 and 36, a pair of bearing blocks 38 and 40, a pair of substantially U- shaped load spring elements 42 and 44, a platform member 46, an edge control bar 48 and an edge control bar mounting spring 50.
  • the two spreader elements 34 and 36 are substantially identical in configuration in that each is provided with a sheet-contacting facing surface 52 and has end portions comprising a first cylindrical section 54 of reduced diameter and a second cylindrical section 56 of further reduced diameter.
  • a circular recess 58 configured to rotatably receive respective cylindrical sections 56 of the spreader element 36.
  • each bearing block 38 and 40 is provided with an elongated recess 60 configured to rotatably receive respective cylindrical sections 56 of the spreader element 34. In the illustrated embodiments, these recesses 58 and 60 extend entirely through respective blocks 38 and 40.
  • the spreader element 36 When rotatably mounted between the bearing blocks 38 and 40, the spreader element 36 is fixedly positioned against translational motion with respect to the bearing blocks. At the same time, the configuration of the elongated recesses 60 permit a limited amount of movement of the spreader element 34 towards and away from the spreader element 36. Respective circular recesses 58 and elongated recesses 60 are located in the bearing blocks 38 and 40 so as to establish a predetermined minimum spacing between the sheet contacting facing surfaces 52 of the spreader elements 34 and 36.
  • This predetermined minimum spacing is selected to facilitate the initial introduction of the aforementioned leader associated with each film unit between the spreader elements 34 and 36, while at the same time assuring that the rollers 34 and 36 exert a compressive force on the pod of processing fluid 22 and the superposed imageqeceiving and imagerecording sheets 18 and 20 as those components of each film unit are advanced through the apparatus 12.
  • the U-shaped load spring elements 42 and 44 continually resiliently urge the spreader element 34 towards the spreader element 36.
  • these elements which are typically formed of spring steel, may be coated with a suitable material such as a fluoropolymer.
  • the length of the elongated recesses 60 limit the distance which the spreader element 34 may be displaced away from the spreader element 36. This distance is selected so as to preclude an overstressing of the U-shaped load spring elements 42 and 44.
  • this fluid spreading apparatus 12 includes means for precluding such fluid seepage from contaminating the facing surfaces 52 of the spreader elements 34 and 36.
  • roller-type spreader elements 34 and 36 may be formed of a suitable stainless steel.
  • the bearing blocks 38 and 40 may be formed (in an inexpensive injection molding process) of a suitable wear resistant, low friction polymeric material such as that sold by Celanese Plastics Company of Newark, New Jersey, a Division of Celanese Corporation, under their designation of Celanex 917.
  • each bearing block 38 and 41B Provided on the support surface 62 of each bearing block 38 and 41B is a key or detent 92 which seats in a complementarily configured recess 94 of its respective spring element 42 or 44 once that spring element is mounted on its associated bearing block in operative relationship with respect thereto and the spreader elements 34 and 36.
  • the fluid spreading apparatus 12 includes means for releasably retaining the spring elements 42 and 44 in their operative positions.
  • the keys or detents may be provided on the spring elements 42 and 44 with the recesses being provided on the bearing blocks 38 and 40. Still further, if desired the detents may alternately be formed as part of the projections 84 and 86.
  • Tabs 96 and 98 respectively extending from the inside faces of the walls 68 and 70, cooperate with the ribs 82 and the adjacent sections of those walls and the base plate 72 to fixedly retain the spring elements 42 and 44 on the platform member 46. Forward movement of the spring elements 42 and 44 along the platform member 46 is limited by tabs 100 and 102 respectively extending from the inside faces of the walls 68 and 70.
  • the platform member 46 also includes a bridge 104 which extends between the inside faces of the projections 84 and 86.
  • This bridge 104 serves several functions with respect to the advancement of the film units through the fluid spreading apparatus 12.
  • the pressure-generating gap 106 defined by the juxtaposed facing surfaces 52 of the spreader elements 34 and 36 is aligned with an elongated exit port 108 (See FIG. formed through the adjacent wall 110 of the back body member.
  • the back body member 16 is closed against the main camera body 14, its upper edge 112 cooperates with the main camera bodys ribs 114 and lip 116 to define a channel 118 providing additional access into the camera 10.
  • the bridge serves the additional function of maintaining proper alignment of the film unit as its leader is advanced into the pressure-generating gap 106 in the process of pulling the aforementioned tab, i.e., it precludes the leader from following the tab through the channel 118, and facilitates the striping of the tab from the film unit.
  • the platform member 46 includes a support surface 122 which also serves to guide and support the film units as they are advanced from the aforementioned film pack through the fluid spreading apparatus 12.
  • the edge control bar 48 includes a pair of parallel spaced apart fish hooks 124 which facilitate the mounting of that element on the platform member 46.
  • This edge control bar 48 may be formed of any suitable material, such as a fiberglass reinforced nylon, so as to provide its fish hooks 124 with a limited yieldably resilient characteristic. In other words, so that they may be resiliently displaced toward one another.
  • the specially configured spring 50 facilitates the resilient mounting of the edge control bar 48 on the platform member 46.
  • a bracket 126 provided with an aprerture 128 extends from the lower face of the platform member 46 and forms a part thereof.
  • the spring 50 is positioned on the edge control bar 48 with its offset section 130" seated against the ends 132 of the fish books 124 and with its upturned ends 134 respectively positioned in recesses 136 provided in the lower face of the edge control bar.
  • This edge control bar 48 spring 50 combination is then mounted on the platform member 46 by inserting the fish hooks 124 and the adjacent sections of the spring 50 through the aperture 128 of the bracket 126.
  • the bracket 126 causes the fish hooks 124 to be deflected towards one another until their enlarged head portions 138 have cleared the bracket 126, at which time they return to their original positions with respect to one another to releasably retain the edge control bar and spring 50 on the platform member 46.
  • the spring 50 serves to resiliently urge it towards the bridge 104.
  • Fingers 140 forming part of the edge control bar 48, are spaced apart a carefully predetermined distance so as to press respective longitudinal edge portions of the superposed sheets 18 and 20 against adjacent portions 142 of the bridge 104 as those sheets are progressively advanced through the fluid spreading apparatus 12.
  • the edge control bar 48 and the bridge 104 cooperate to preclude processing fluid 22 from escaping from between the longitudinal edge portions of the superposed sheet materials 18 and 20 as each film unit is advanced through the apparatus 12 in the course of film processing operations.
  • the edge control bar 48 may be formed of any suitable material such as a fiberglass reinforced nylon.
  • the spring latch 144 is compressed by the brace 146 thereby resiliently urging the front edges 148 and 150, respectively, of the platform members walls 68 and 70 against the inside face of the cameras wall 110.
  • the specially configured projection 151 and cut-out 153 provided on the base plate 72 cooperate with complementary indicia on the inside face of the cameras wall 155 to indicate to the operator the proper alignment of the spreading apparatus 12 within the camera 10. This arrangement precludes the operator from attempting to improperly insert or from jamming the apparatus into the camera.
  • the spring latch 144 includes a pair of anns 152 respectively terminating in flange portions 156 and 158 positioned in recesses 160 and 162 of the platform member 46 (See FIG. 2). Thus adjacent sections of the platform member 46 serve as stops to limit the movement of the spring latch 144 and preclude accidental ovcrstressing of same.
  • the U-shaped spring elements 42 and 44 are slideably inserted onto the platform member 46 in a forward direction along their respective guide tracks until they are in operable relationship with their associated bearing blocks 38 and 40 and the spreader elements 34 and 36.
  • That prior art fluid spreading system basically comprises a pair of sheet metal spreader elements connected together by a pair of U-shaped springs, respective ends of which are welded to the spreader elements.
  • That prior art fluid spreading system basically comprises a pair of sheet metal spreader elements connected together by a pair of U-shaped springs, respective ends of which are welded to the spreader elements.
  • Such assembly techniques require some degree of close tolerance work to maintain proper sheetcontacting facing surface configurations and alignment.
  • Such assembly techniques have resulted in a significant scrappage factor, increasing the actual cost of producing satisfactory spreader systems.
  • roller-type spreader elements 34 and 36 of the present invention are somewhat more expensive than their sheet metal counterparts employed in the prior art fluid spreading apparatus, it has been found that the assembly operations associated with the present invention permits such fluid spreading apparatus to be produced in large quantities at a cost actually lower than that associated with producing the prior art device.
  • roller-type spreader system which may be quickly inserted into and removed from a camera to facilitate spreader element cleaning operations and/or replacement operations.
  • respective cylindrical sections 56 are continually engaged by load spring elements 42 and 44.
  • load spring elements 42 and 44 When the fluid spreading apparatus 12 is removed from the camera 10 for cleaning purposes, there is some resistance to the rotation of the spreader element 34 while the spreader element 36 may be freely rotated.
  • opposite ends of the roller 34 are rotatably supported in elongated recesses 166 of the bearing blocks 38 and 40.
  • roller-type fluid spreading apparatus which may be readily inserted into and removed from a camera as an integral assembly. Further, this fluid spreading apparatus may be used to replace similar apparatus currently provided in commercially available cameras without otherwise altering those cameras in any manner.
  • Photographic apparatus for spreading a processing fluid between a pair of sheet materials comprising:
  • said second means for yieldably urging said one spreader element towards said other spreader element at least when the spacing between said spreader elements is increased a distance greater than said predetermined minimum spacing, said second means including a pair of spring elements, each of said spring elements being mounted on one of said bearing blocks;
  • Photographic apparatus for spreading a processing fluid between a pair of sheet materials comprising:
  • each said spring element is rectangular incross-section and said guiding and retaining means comprises a guide track of com plementary configuration to said
  • Photographic apparatus for spreading processing fluid between a pair of sheet materials comprising:
  • said resiliently urging means comprises at least one substantially U- shaped spring element.
  • Photographic apparatus for spreading a processing fluid between a pair of sheet materials comprising means for rotatably mounting a pair of roller-type spreader elements in juxtaposition with at least one of such spreader elements mounted for a limited amount of displacement away from the other, means for resiliently urging such first spreader element towards the other, and a platform member formed of a single piece of material, said platform member including means to receive said mounting means and means to receive said resiliently urging means including means for guiding said spreader element urging means into its operative resiliently urging means, said means for receiving said position with such spreader elements during assembly of said apparatus.
  • said resiliently urging means comprises at least one substantially U- shaped spring element and said means for guiding said U-shaped spring element into its operative position with such spreader elements includes a ramp positioned to urge the two legs of said Ushaped spring element apart as it is brought into its operative position with such spreader elements.
  • Photographic apparatus for spreading a processing fluid between a pair of sheet materials comprising means for rotatably mounting a pair of roller-type spreader elements in juxtaposition; and edge control bar; spring means; and a platform member formed of a single piece of material, said platform member including means for guiding such sheet materials towards such spreader elements, means for receiving said spreader element mounting means, means for receiving both said spring means and said edge control bar with said spring means resiliently urging said edge control bar towards said sheet material guiding means to cooperate therewith to preclude such fluid escaping from between the longitudinal edges of such sheet materials in advance of such spreader elements as such sheet materials are advanced therebetween.
  • Photographic apparatus for spreading a processing fluid between a pair of sheet materials comprising:
  • a pair of spaced apart bearing blocks including first means for rotatably mounting said pair of spreader elements lengthwise therebetween in substantially parallel alignment, both said bearing blocks being structured to facilitate the displacement of at least one of said spreader elements away from the other of said spreader elements;
  • said second means comprises at least one substantially U-shaped spring element.
  • said second means and said bearing blocks comprise at least one recess and a complementary detent located to engage one another when said second means is in its said operative position with respect to said spreader elements and said bearing blocks.
  • a pair of spaced apart bearing blocks including first means for rotatably mounting said pair of spreader elements therebetween in substantially parallel alignment and for establishing a predetermined minimum spacing between said spreader elements, both of said bearing blocks being structured to facilitate the displacement of at least one of said spreader elements away from the other said spreader element thereby increasing the spacing between said spreader elements a distance greater than said predetermined minimum spacing;
  • said third means includes ramp means for spreading opposite ends of each said spring element apart as it is assemled into its said operative position.
  • the apparatusof claim 18 additionally including fourth means for guiding such sheet materials between said spreader elements as they are advanced through said apparatus and said base plate, said second means, said third means and said fourth means are formed of a single piece of molded material.
  • the apparatus of claim 20 additionally including an edge control bar, means formed integrally with said single piece of molded material for mounting said edge control bar thereon in juxtaposed relationship to said fourth means and means mounted on said single piece of molded material for resiliently urging said edge control bar towards said fourth means.
  • Photographic apparatus for spreading a processing fluid between a pair of sheet materials comprising:
  • each said spreader element having circular end portions of a given diameter
  • each said bearing block including a pair of spaced apart recesses, one of each said pair of recesses being circular in configuration to fixedly receive one said end portion of one said spreader element against translational motion while facilitating rotational movement thereof and the other of said recesses comprising an open ended elongated slot to receive one said end portion of said other spreader element to facilitate both rotational movement thereof and translational motion thereof with respect to said one end portion of said one spreader element disposed within said circular recess, said circular recess being spaced a predetermined distance from said elongated slot to establish a predetermined minimum spacing between said spreader elements, each said bearing block including means for supporting one end of one said spring element with the other end of said one spring element overspring element is generally U-shaped.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Cameras Adapted For Combination With Other Photographic Or Optical Apparatuses (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US00160364A 1971-07-07 1971-07-07 Low-cost roller-type photographic fluid spreading apparatus Expired - Lifetime US3745904A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16036471A 1971-07-07 1971-07-07

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US3745904A true US3745904A (en) 1973-07-17

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US00160364A Expired - Lifetime US3745904A (en) 1971-07-07 1971-07-07 Low-cost roller-type photographic fluid spreading apparatus

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US (1) US3745904A (xx)
JP (1) JPS5535698B1 (xx)
AT (1) AT323554B (xx)
AU (1) AU472621B2 (xx)
CA (1) CA980159A (xx)
CH (1) CH554546A (xx)
DE (1) DE2231727C3 (xx)
FR (1) FR2145313A5 (xx)
GB (1) GB1398322A (xx)
IT (1) IT958499B (xx)
NL (1) NL182841C (xx)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983567A (en) * 1975-02-20 1976-09-28 Eastman Kodak Company Pressure roller assembly for self processing camera
US4253757A (en) * 1979-10-01 1981-03-03 Polaroid Corporation Spread roller assembly
US4299471A (en) * 1980-04-21 1981-11-10 Polaroid Corporation Self-developing camera back with removable processing assembly
US4420241A (en) * 1981-12-18 1983-12-13 Agfa-Gevaert Ag Mounting assembly for film-squeezing rollers
US4568167A (en) * 1984-08-27 1986-02-04 Polaroid Corporation Film processing roller assembly
US4772905A (en) * 1986-07-11 1988-09-20 Fuji Photo Film Co., Ltd. Instant film pack
US4884088A (en) * 1988-11-21 1989-11-28 Polaroid Corporation Kit for converting 35 mm camera for use with self-developing transparency film
US4886732A (en) * 1988-11-21 1989-12-12 Polaroid Corporation 35 mm self-developing transparency film assemblage

Citations (10)

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US2056584A (en) * 1935-03-27 1936-10-06 Bruning Charles Co Inc Apparatus for developing prints
US2722871A (en) * 1952-09-19 1955-11-08 Polaroid Corp Photographic apparatus
US3053160A (en) * 1960-08-08 1962-09-11 Polaroid Corp Photographic film unit
US3165039A (en) * 1963-03-29 1965-01-12 Polaroid Corp Photographic apparatus
US3364834A (en) * 1965-06-14 1968-01-23 Polaroid Corp Photographic processing apparatus
US3498196A (en) * 1967-07-25 1970-03-03 Polaroid Corp Photographic apparatus for distributing processing fluid from a pod
US3511152A (en) * 1968-03-18 1970-05-12 Polaroid Corp Film advancing apparatus
US3561340A (en) * 1969-02-24 1971-02-09 Polaroid Corp Removable processing roller assembly for a self-developing camera
US3589262A (en) * 1968-06-21 1971-06-29 Polaroid Corp Photographic processing apparatus
US3590707A (en) * 1970-02-24 1971-07-06 Polaroid Corp Self-erecting compressive members in a camera

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
DE1235734B (de) * 1964-05-06 1967-03-02 Polaroid Corp Selbstentwicklerkamera
DE1264950B (de) * 1965-04-21 1968-03-28 Polaroid Corp Selbstentwicklerkamera
US3499373A (en) * 1967-07-25 1970-03-10 Polaroid Corp Photographic apparatus

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2056584A (en) * 1935-03-27 1936-10-06 Bruning Charles Co Inc Apparatus for developing prints
US2722871A (en) * 1952-09-19 1955-11-08 Polaroid Corp Photographic apparatus
US3053160A (en) * 1960-08-08 1962-09-11 Polaroid Corp Photographic film unit
US3165039A (en) * 1963-03-29 1965-01-12 Polaroid Corp Photographic apparatus
US3364834A (en) * 1965-06-14 1968-01-23 Polaroid Corp Photographic processing apparatus
US3498196A (en) * 1967-07-25 1970-03-03 Polaroid Corp Photographic apparatus for distributing processing fluid from a pod
US3511152A (en) * 1968-03-18 1970-05-12 Polaroid Corp Film advancing apparatus
US3589262A (en) * 1968-06-21 1971-06-29 Polaroid Corp Photographic processing apparatus
US3561340A (en) * 1969-02-24 1971-02-09 Polaroid Corp Removable processing roller assembly for a self-developing camera
US3590707A (en) * 1970-02-24 1971-07-06 Polaroid Corp Self-erecting compressive members in a camera

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3983567A (en) * 1975-02-20 1976-09-28 Eastman Kodak Company Pressure roller assembly for self processing camera
US4253757A (en) * 1979-10-01 1981-03-03 Polaroid Corporation Spread roller assembly
US4299471A (en) * 1980-04-21 1981-11-10 Polaroid Corporation Self-developing camera back with removable processing assembly
US4420241A (en) * 1981-12-18 1983-12-13 Agfa-Gevaert Ag Mounting assembly for film-squeezing rollers
US4568167A (en) * 1984-08-27 1986-02-04 Polaroid Corporation Film processing roller assembly
US4772905A (en) * 1986-07-11 1988-09-20 Fuji Photo Film Co., Ltd. Instant film pack
US4884088A (en) * 1988-11-21 1989-11-28 Polaroid Corporation Kit for converting 35 mm camera for use with self-developing transparency film
US4886732A (en) * 1988-11-21 1989-12-12 Polaroid Corporation 35 mm self-developing transparency film assemblage

Also Published As

Publication number Publication date
NL7209033A (xx) 1973-01-09
NL182841B (nl) 1987-12-16
AT323554B (de) 1975-07-25
DE2231727A1 (de) 1973-01-18
GB1398322A (en) 1975-06-18
FR2145313A5 (xx) 1973-02-16
DE2231727B2 (de) 1981-06-19
AU472621B2 (en) 1976-05-27
IT958499B (it) 1973-10-20
JPS5535698B1 (xx) 1980-09-16
AU4389772A (en) 1974-01-03
NL182841C (nl) 1988-05-16
CA980159A (en) 1975-12-23
DE2231727C3 (de) 1982-03-04
CH554546A (de) 1974-09-30

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