US3707117A - Photographic film assemblage - Google Patents

Photographic film assemblage Download PDF

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Publication number
US3707117A
US3707117A US114446A US3707117DA US3707117A US 3707117 A US3707117 A US 3707117A US 114446 A US114446 A US 114446A US 3707117D A US3707117D A US 3707117DA US 3707117 A US3707117 A US 3707117A
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Prior art keywords
film
pull tab
pull
cohesive
film unit
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Expired - Lifetime
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US114446A
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English (en)
Inventor
Richard D Moulton
Stanley R Schieven
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Eastman Kodak Co
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Eastman Kodak Co
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/42—Structural details

Definitions

  • ABSTRACT A film pack for use in an in-camera processing system comprising a container in which a plurality of in- [451 Dec. 26, 1972 dividual film-units, each including a light-sensitive film and an image-receiving sheet coupled by means including a leader, a pull tab connected to said leader, are arranged in stacked relation so that after the film of each unit is exposed it can be moved into superposed relation with its corresponding image-receiving sheet for processing when the pull tab extending from the container, and camera it is associated with, is pulled.
  • the pull tabs of all of the film units are folded back upon themselves and interleaved with the film units so as to be confined wholly within the container until they are pulled successively therefrom by pulling on the pull tab of the preceding film unit.
  • the pull tab on the first film unit is adhered to a safety cover sheet which is wrapped around the stack of film units to protect them against being fogged during handling of a pack outside of the camera, and is withdrawn from the pack and the camera after the pack is placed in the camera to ready the first film unit for exposure.
  • the pull tabs are provided with patches or stripes of a cohesive adhesive material so arranged that the pull tabs become adhesively connected together, and the pull tab of the first film unit becomes adhesively connected to the safety cover sheet, with bonds having the necessary shear and peel strengths by the mere application of pressure to the stack of film units after the pull tabs have been folded back into interleaved relation with the film units,
  • a rromver 1 PHOTOGRAPHIC FILM ASSEMBLAGE This invention relates to photography and more particularly to a novel assemblage of film units adapted for use in an in-camera processing system wherein a positive print is obtained by an image-transfer process.
  • Film units used in the well known in-camera processing system generally consist of a photosensitive sheet element which is normally first exposed and then biased into superposed relation with a second sheet element which is, in general, photographically inert and aids in the control of distributionof the processing fluid between the two sheets.
  • the photosensitive element may contain an integral print-receiving stratum or, more preferably, the second sheet element comprises a transfer image-receiving element. After the photosensitive sheet element has been photographically exposed the two sheet elements are biased into face-to-face relation and moved to, and between, a pair of opposed pressure-applying members, such as a pair of parallel rollers in a camera which are spring loaded into engagement with one another.
  • a plurality of these film units are assembled in a pack which when placed in the back of the camera allows eight pictures to be made in succession.
  • the several film units are arranged in a container with the light-sensitive sheets of all of the film units stacked on one side of a pressure plate and facing an exposure aperture, whereas the image-receiving sheets of all the film units are stacked on the other side of the pressure plate.
  • the light-sensitive sheet and image-receiving sheet of each film unit are connected together so that when a pull tab attached thereto is pulled through and from the camera it advances the lead end of the exposed film unit between the pressureapplying means of the camera to an extent that said leading end may be grasped for withdrawing the film unit from the camera and between the pressure-applying means.
  • the pull tabs of the several film units are adhered to one another so that when the pull tab of one film unit is pulled to withdraw the leading end of its film unit between the pressure-applying means of the camera it pulls the end of the pull tab attached to the succeeding film unit out of the camera so that it is accessible for initiating the withdrawal of the next film unit after its exposure.
  • the pull tabs of all of r the film units extend outside of the pack so that no This disadvantage may be overcome if the film units are assembled within the pack container in such a manner that all of the pull tabs lie within the container until they are pulled therefrom by pulling on the end of one of the preceding film units, as shown in co-pending US. application Ser. No. 841,865 filed July 15, 1969, now abandoned.
  • the pull tab of the first film unit should be adhered to the safety cover sheet, which is wrapped around the stack of film units to protect them against being fogged during handling outside of the camera, and is withdrawn from the pack and camera after the pack is placed in the camera and the safety cover is pulled out of the camera to ready the first film unit for exposure.
  • the primary object of the present invention is to provide an assemblage of film units of the type described wherein the pull tabs of each of the several film units is folded back upon itself and interleaved within the film units so as to be confined within the pack, and wherein the pull tabs are so constructed that they can be selectively adhered to one another while the film units are in this stacked relation merely by the application of pressure to the stack at a prescribed area which will not adversely effect any component of the assemblage.
  • Another object is to provide an assemblage of film units wherein the pull tabs are provided with patches or strips of a self adhering, or cohesive, adhesive material so arranged that the pull tabs become adhesively connected together with bonds having the desired shear and peel strengths by the mere application of pressure to the stack of film units after the pull tabs have been folded back into interleaved relation with the remainder of the film units.
  • a further object is to provide an assemblage of film units of the type described which is so constructed that it can be readily produced by an automatic or a semiautomatic machine or manually.
  • FIG. 1 is a perspective view showing how a photographic film unit is folded when assembled in a film pack constructed in accordance with the present invention
  • FIG. 2 is a plan view of the film unit of FIG. 1;
  • FIG. 3 is a perspective view of a film pack comprising an assemblage of film units of the types shown in FIGS. 1 and 2;
  • FIG. 4 is an enlarged longitudinal sectional view taken substantially midway between the sides of the pack shown in FIG. 3;
  • FIG. 7 is a longitudinal section of a pull tab on an exaggerated scale to show a preferred arrangement of cohesivepatches and slip or release coats as applied thereto in accordance with the preferred form of the present invention
  • FIG. 8 is a view similar to FIG. 6 but showing anothe arrangement of cohesive patches on the pull tab
  • FIG. 9 is a view similar to FIG. 8 but showing still another arrangement of cohesive patches on the pull tab.
  • a plurality, usually eight (8), film units are arranged in stacked relation within a container having an opening at one end'through which the leading end of the individual units are pulled in succession by means of a pull tab connectedto each film unit.
  • This brings a leader on each film unit through the pressure members of a camera which is then grasped and pulled to withdraw the film unit from the camera and spreads a processing solution over the exposed photosensitive sheet to causeprocessing' of the exposed image.
  • the pull tabs of the several units are connected to one another so that when the one connected to an exposed unit is pulled from the pack and camera to initiate processing thereof, the pull tab of the next film unit is withdrawn from the camera to be accessible.
  • the film units are so assembled that all of the pull tabs are confined within the pack for the purpose of facilitating the loading of the pack into the camera.
  • the free end of each pull tab except the one connected to the first film unit to be exposed, is folded back upon itself and around the end of the film unit to which it is attached and a portion thereof is adhered in faceto-face relationship with a portion of the preceding pull tab intermediate between the two ends of the preceding pull tab.
  • the pull tab for the first film unit is adhered in a similar fashion to a portion of a safety cover for the pack. This means that when the film units are assembled in the pack the point of attachment for all pull tabs, except that one connected to the safety cover, are interleaved between the film units.
  • the attachment of the pull tabs to one another and the safety cover are made by cohesive patches so arranged on the respective pull tabs that the pull tabs can be selectively attached together after the film units have been assembled in stacked relation by merely applying pressure to the stack of film units at points in alignment with the points of attachment between the pull tabs of the film units and the safety cover sheet.
  • FIGS. 1-4 wherein there is illustrated a pack-type film unit and an assemblage of such units in the form of a film pack assembled according to the present invention.
  • Each film unit, designated 10 comprises a generally rectangular photosensitive sheet 11 (hereinafter sometimes referred to as afilm) and a receiving sheet 12 (hereinafter sometimes referred to as the'receiver). Both of these sheets comprise a support which is opaque to light actinic to the photosensitive material on the film.
  • a narrow spacer rail 13 Secured on the face of,- and extending along each of the lateral edges of, the film is a narrow spacer rail 13 in theifo'rm of a strip of thin paper. As will be described hereinafter, these spacer rails cooperate with-a part of the carriersheet for the receiver in spreading a .controlled thickness of processing solution between the sheets.
  • the second, or print-receiving sheet may merely serve to aid in the distribution of a processing solution in contact with the photosensitive layer of the film, or, in the preferred form of thefilm unit, comprisesmeans for supporting atransfer image formed, for example, by
  • a silver halide diffusion, transfer reversal-process At-' tached to the leading edge of the film 11 is a leader sheet 14 having a first section 15 approximately equal in width to the film and having a tapered end section 16. The transverse edge of the first section 15 is coupled to the leading edge of the film 11 as indicated at 17, and a rupturable fluid-containing pod 18 is mounted on leader sheet 14 ahead of the leading endof the film.
  • the receiver sheet 12 is mounted on a carrier sheet 19 having an intermediate section 20 approximately equal in width to receiver sheet 12 and having a generally rectangular opening 21 therein defining the area of the receiver sheet in which the image formation occurs. Those portions of the intermediate section 20 bordering on opening 21 provide a mask for defining the area of the image transferred from the film to the receiver.
  • Carrier sheet 19 includes a leading end section 23 having a tapered end section 24 similar to tapered end section 16 and secured thereto behind the leading end of the tapered end section 16 as indicated at 17'.
  • Tapered end section 16 and portion 24 cooperate todefine the leading end section of the film unit which is advanced between pressure applying members of a camera.
  • the length'of leader sheet 14 between the leading edge of the film l1 and the point of attachment of the leader sheet to carrier sheet 19 is substantially equal to the length of the carrier sheet -19 between the point of attachment to the leader sheet and the leading edge of the receiver sheet 12. It is by virtue of this attachment that the film 11 and the receiver sheet 12 are capable of being biased into superposed registered relation during the processing of the film unit.
  • an embossed trap 25 is attached to the trailing end of the carrier sheet 19.
  • the trap 25 is superposed with the trailing end of the film 11.
  • the protuberances on the trap are (collectively). strong enough to separate the pressure rolls of the camera as the film unit is pulled between them for processing thus leaving a space between the film and closed more in detail in co-pending U.S. Pat. application Ser. No. 841,865 filed July 15, 1969 having an assignee in common with the present application and to which reference can be had for a more detailed description thereof.
  • the trap construction forms no part of the present invention the brief description given thereof is believed to be sufficient to an understanding of its function. So far as the present invention is concerned a film trap of the type shown in U.S. Pat, No. 2,686,717 could be used in the film unit.
  • Distribution of the processing fluid is effected by advancing the film 11 and receiver 12 and the pod of processing solution between a pair of juxta-posed pressure-applying members forming a part of the camera in which the film unit is to be exposed.
  • the members apply compressive pressure to the film and receiver sheets progressively, from the leading ends in the area of the pod to the trailing ends, to cause the ejection of the fluid contents of the pod between the film and receiver sheets and the spreading of the fluid in a layer between and in contact with the sheets.
  • the superposed spacer rails 13 and the narrow portions 22 of the carrier sheet 19 keep the processing solution from leaking out the edges of the film unit and their combined thickness determines the thickness of the layer of processing fluid which is spread between the image area of the film and receiver sheets 11 and 12 respectively.
  • the excess processing fluid which is always provided in the pod, is effectively collected and retained at the trailing end of the film unit by the trapping means 25.
  • FIGS. 3,4 and 5 A film pack or assemblage of film units is shown in FIGS. 3,4 and 5. For reasons of simplicity only two film units and the safety cover are shown in the pack, and inFIG. 5 the elements are shown in expanded relation to more clearly illustrate the manner in which the pull tabs are attached to one another and the safety cover sheet according to the present invention.
  • the film pack designated at 38, comprises a generally parallelepiped-shaped container or box 39 for holding and enclosing a plurality of film units 10 when each is folded upon itself as generally indicated in FIG. 1.
  • Container 39 comprises a body portion having a forward wall 40, side walls 41,v a trailing end wall 42 and a leading end wall 43.
  • Forward wall 40 is provided with a generally rectangular exposure aperture 44 for exposing the film 11- of the film units 10 carried within the container.
  • Leading end wall 43 extends only part way of the depth of the container to provide a passage 45 at the leading end of the container through which the film units can be drawnfrom the container one at a time.
  • the container is closed by a metal cover 46 having flanges 47 turned down along its sides and rear end to slidably engage side wall 41 and the trailing end wall 42 That portion of the leader sheet 14 between the leading edges of the film 11 and the pod 18 is bent back upon itself, and the carrier sheet 19 is similarly bent back upon itself adjacent the leading edge of the receiver 12 so that portions of the leader sheet and the carrier sheet lie between the film 11 and receiver 12, and the leading and trailing ends of the film 11 are, respectively, disposed adjacent the trailing and leading ends of the receiver sheet 12.
  • the film pack is provided with a generally flat, rectangular pressure plate 50 located intermediate the film and the other portions of the film unit for supporting the film flatwise adjacent the inner surface of the forward wall 40 in position for exposure through the aperture 44.
  • Pressure plate 50 includes a rolled end section 52 around which extends the bent back portion of the leader sheet 14 of each film unit, see FIGS. 4 and 5.
  • Rolled end section 52 is provided for guiding film 11 around the end of the pressure plate and into superposed relation with its corresponding receiver sheet 12 in a manner to be hereinafter described.
  • the major portion of first section 15 of the leader sheet 14, rupturable pod. mounted thereon, tapered section 16, and the leading end section 23 of the carrier sheet 19 are located behind the pressure plate 50 and between the latter and the receiver sheet 12.
  • Pressure plate 50 is provided with lateral flanges 54 disposed adjacent side walls 4'1 of the container.
  • the cover 46 is provided with spring fingers 56 biased inwardly for engaging the top of the lateral flanges 54 and urging pressure plate 50 toward the forward wall 40 to retain the film 11 in a predetermined plane for exposure.
  • the means forwithdrawing each film unit 10 from the pack 38 with the film 11 and receiver 12 superposed, and for advancing tapered end section 16 between a pair of pressure rollers comprises a relatively narrow and elongated pull tab 60 adhesively secured at its tapered trailing end 60' to tapered end section 16 intermediate first section 15 and the point of attachment of the tapered end section to tapered wall portion 24 of carrier sheet 19.
  • the adhesive bond between the trailing end of pull tab 60 and tapered end section 16 is such that it will provide sufficient resistance to the application of tension in a direction of the plane of the tapered end section. 24 to prevent it from becoming sheared apart, but when tension is applied to the pull tab in a direction at an angle to the tapered end section 16 the pull tab will readily peel from the end section 16.
  • This adhesive bond may comprise a stripe coating of heat scalable adhesive on the trailing end of the pull tab as indicated at 60" in FIGS. 6 and 7.
  • this adhesive connection 60 so long as the pull tab and the film unit to which it is coupled are being moved in approximately the same direction the adhesive bond between the pull tab and end section 16 is subjected to a shear force and will not fail. This condition exists when the pull tab 60 is pulled from a camera to advance the end section or leader 16 between the pressure rolls of a camera in which the film pack is situated.
  • Film pack 38 is provided with means for initially sealing the exposure aperture 44 against the admission of light until the pack has been loaded into the camera in which it is 1 to .be employed.
  • This light sealing means comprises a cover sheet. 65 of a light impervious material located between the foremost film 11 and the forward wall 40 and extending across the exposure aperture 44. Cover sheet 65 extends around the curved end 52 of the pressure plate 50 and behind the same to a position adjacent the cover 46. It has a tapered leading end 66 which extends through the opening 45in the forward wall in the forward end of the pack and serves as aarneans. for withdrawing the cover sheetfrom the packafter the pack has been loaded into a camera.
  • the pull tab of the first film unit of a pack is adhesively connected'to the cover sheet so that it will be pulled from 8.0 mil deep gravure roll and does not possess a tack which causes objectionable blocking when the pull tab product is rolled up or the film units are being assembled is shown in the following example:
  • the term'strength as used here includes the effect of area, width of the leading edge of the bond, and the the camera when the cover sheet is withdrawn to ready I No. 3,161,516) the pull tabs of all of the film units in the pack, as well as the leading end of the cover sheet, extend outside of the pack.
  • each pull tab is folded back or wrapped around the receiver sheet 12 of its film unit so that a first patch 75 of cohesive cement on the pull tab is superposed with a second patch 76 of cohesive cement on the pull tab of the preceding film unit or the cover sheet in the case of the pull tab of the first film unit to be exposed.
  • the cohesive cement can be any of the materials of the self-adhering type, such well known pressure-sensitive, latex base, adhesives used in so called self-sealing envelopes, elastomers including styrene butadiene natural rubber disolved in benzene or heptane toluole, or polyisoprene disolved in methyl chloroform (1-1-1 tri chlorothane).
  • Such materials can be coated directly on the pull tabs if they have sufficient tack or they can be applied to a base support which is then cut to proper shape and size and attached to the pull tabs.
  • a cohesive material which can be successfully coated directly on the pull tab by an properties of thecohesive material. It follows that the cohesive bond between the pull tabs must have suffi cient shear strength to cause a succeeding pull tab to be pulled from the camera as a preceding pull tab is pulled out of the camera and a peel strength such that they will readily peel apart after the preceding pull tab is pulled completely from the camera. The force required to prematurely advance the next film unit decreases as film units are removed from the pack.
  • the last few film units require the least pull for premature advance so that the peel strength between pull tabs must be lower than that limit. Two to 3 lbs. is a maximum.
  • the shear strength of the bond must be high enough to advance the first pull tab when the safety cover is removed, e.g. approximately 0.5 lbs.
  • the stack of assembled film units are folded around the pressure plate to the condition shown in FIGS. 4 and 5 and then the film units and pressure plate 50 are dropped into the container 39 and the cover is slid into place.
  • the cohesive patches 75 and 76 are shown as consisting of two layers because it has been found to be advantageous toapply these in two thin layers instead of one thick layer.
  • the first layer tends to soak into the support, particularly if the support is paper.
  • the second layer is then required to obtain a cohesive patch on the surface of the pull tab which has the necessary cohesive characteristics.
  • the top surface of the pull tab between the cohesive patches 75 and 76 and the back of the pull tabs are provided with a slip and/or release coating 100 and 101, respectively, see FIG. 7.
  • the term blocking as used means the sticking together of adjoining layers of a stack or roll of product due to the tack of the cohesive material for a surface other than itself. It will be noted that the length of the slip or release coating 101 on the back of each pull tab is sufficient to embrace the two cohesive patches 75 and 76 on the other side of the pull tab.
  • slip and/or release coating used serves to reduce the friction between adjoining elements and reduce the pull force necessary to withdraw a film unit from the pack.
  • slip and/or release agents include organo-'siloxanes, oleamides, mixtures of alkyl silicones and an aryl silicone dissolved in a mutual solvent medium (70 percent acetone and 30 percent methanol) for said polymer. Examples of the most suitable slip and/or release agents found are as follows:
  • slip and release agent was found to be preferred over others tried since it was not subject to rub off, and when coated very thin will cure in 30 seconds at 160F.
  • a patch of cohesive cement should be placed thereon to cooperate with the patch of cohesive on the first pull tab in order to provide a satisfactory bond between the two.
  • cohesive cements suitable for'use on the pull tabs will have sufficient tack to adequately join the first pull tab to the cover sheet paper if it is not coated with a slip agent. Accordingly if a window is left in the slip coat on the cover sheet so that the cohesive patch on the first pull tab 60 will directly engage the cover sheet paper then no cohesive patch is required on the cover sheet.
  • the tack characteristics of the cohesive cement are quite critical, particularly if the cohesive is coated directly on the pull tabs and/or cover sheet and must depend upon its tack property to adhere it to a surface. While a high tack property is desired for holding the cohesive to the pull tab, too high a tack might give objectional blocking when the film units are stacked during assembly or when the pull tab material is stored in roll form.
  • the tack of the mentioned cohesive cements can be adjusted by the addition of tackifiers or detackifiers in different amounts. -Terpenes and polystyrenes are examples of tackifiers which can be used with the cohesive cements mentioned. Suitable detackifiers for these cements include starch, fumed silica, aluminum styrate and fumed alumina.
  • the cohesive patches can be preferably narrower than the pull tab width as shown at 75' and 76 in FIG. 8. With this arrangement of patches a slight lateral misalignment of the patches of two adjacent pull tabs can occur without one of the cohesive patches contacting a material which is not to be moved with the pull tab. However, a full pull tab width cohesive stripe is possible providing the edges of the pull tab are notched at the cohesive strip 76" nearest the end of the' pull tab which is sealed to the leader end section 16 as shown in FIG. 9.
  • an advantage of having the pull tabs folded and attached to each other completely within the container 38 is that the pull tabs cannot possibly be pinched between the container and the camera or between the camera body and camera back as is possible with commercially available film packs.
  • Another customer advantage is the additional gripping power offered by the cohesive coating on or near the end of the pull tab extending from the camera.
  • the final assembly operation of attaching the pull tabs to each other is simplified since no sealing operation is required.
  • the cohesive bond between selected layers of a stack of material is accomplished by pressure alone applied to the outer layers of the stack.
  • a photographic film assemblage adapted for use in a camera said film assemblage comprising in combination,
  • each film unit including a leader for withdrawing the film unit from said stack and a pull tab coupled at one end to said leader for withdrawing said leader from the stack;
  • a container adapted to be inserted in a camera enclosing said stack of film units and having an opening through which said film units are movable in succession and through which the pull tab of only one film unit projects at any one time;
  • each of the pull tabs of said other film units being folded back upon itself toward the pull tab of the adjacent film-unit to an extent such that initially all of the pull tabs lie within the confines of said container and being adhesively connected in face-to-face relation to the pull tab of an adjacent film unit; said adhesive connection comprising a patch of cohesive cement on the surface of at least one of said pull tabs and forming a cohesive bond having a peel strength less than its shear strength.
  • a photographic film assemblage as defined in claim 2, wherein the adhesive connection between said safety cover and the pull tab on the film unit immediately adjacent thereto comprises a stripe of cohesive material on each of the safety cover and the end of the pull tab which are brought into face-to-face contact when the pull tab is folded back upon itself toward the safety cover.
  • a photographic film assemblage comprising in combination,
  • each film unit including a leader for withdrawing the film unit from said stack and a pull tab coupled at one end to said leader for withdrawing said leader from the stack;
  • each pull tab having two patches of cohesive material thereon, a first patch being adjacent the end of the pull tab attached to the leader and the second patch being adjacent the free end of the pull tab; the secondpatch of coheil %-l% i'c 83t8lvlllll'ili rlfsi3aifii'% sive material on the pull tab of the adjacent film unit when folded back upon itself toform a cohesive bond having a peel strength less than its shear strength.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Packages (AREA)
  • Photographic Developing Apparatuses (AREA)
US114446A 1971-02-11 1971-02-11 Photographic film assemblage Expired - Lifetime US3707117A (en)

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US11444671A 1971-02-11 1971-02-11

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US (1) US3707117A (de)
AU (1) AU3887172A (de)
BE (1) BE779201A (de)
BR (1) BR7200731D0 (de)
CA (1) CA969401A (de)
CH (1) CH545490A (de)
DE (1) DE2206526A1 (de)
FR (1) FR2125338B1 (de)
IT (1) IT947448B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090211A (en) * 1973-12-29 1978-05-16 Fuji Photo Film Co., Ltd. Self-developing camera and film pack therefore
EP0109769A1 (de) * 1982-10-22 1984-05-30 Polaroid Corporation Selbstentwicklerfilmpack mit Flüssigkeitsauftrager
US20040202463A1 (en) * 1999-07-02 2004-10-14 Fuji Photo Film Co., Ltd. Method of and apparatus for manufacturing instant photography film unit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912740A (en) * 1988-08-19 1990-03-27 Eastman Kodak Company Intraoral dental radiographic film packet improvement

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477304A (en) * 1948-06-25 1949-07-26 Polarold Corp Self-developing camera
US3080805A (en) * 1961-05-26 1963-03-12 Polaroid Corp Photographic apparatus
US3113496A (en) * 1960-11-25 1963-12-10 Polaroid Corp Photographic apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2477304A (en) * 1948-06-25 1949-07-26 Polarold Corp Self-developing camera
US3113496A (en) * 1960-11-25 1963-12-10 Polaroid Corp Photographic apparatus
US3080805A (en) * 1961-05-26 1963-03-12 Polaroid Corp Photographic apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4090211A (en) * 1973-12-29 1978-05-16 Fuji Photo Film Co., Ltd. Self-developing camera and film pack therefore
EP0109769A1 (de) * 1982-10-22 1984-05-30 Polaroid Corporation Selbstentwicklerfilmpack mit Flüssigkeitsauftrager
JPS5994754A (ja) * 1982-10-22 1984-05-31 ポラロイド　コーポレーション 液体塗布器付自己処理型フイルムユニツト
JPH0469778B2 (de) * 1982-10-22 1992-11-09 Polaroid Corp
US20040202463A1 (en) * 1999-07-02 2004-10-14 Fuji Photo Film Co., Ltd. Method of and apparatus for manufacturing instant photography film unit
US6922979B2 (en) 1999-07-02 2005-08-02 Fuji Photo Film Co., Ltd. Method of and apparatus for manufacturing instant photography film unit

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FR2125338B1 (de) 1975-10-24
IT947448B (it) 1973-05-21
FR2125338A1 (de) 1972-09-29
AU3887172A (en) 1973-08-16
CA969401A (en) 1975-06-17
DE2206526A1 (de) 1972-08-17
CH545490A (fr) 1973-12-15
BR7200731D0 (pt) 1973-06-05
BE779201A (fr) 1972-05-30

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