US3882526A - Photographic processing apparatus employing delayed action expandable sponge - Google Patents

Photographic processing apparatus employing delayed action expandable sponge Download PDF

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Publication number
US3882526A
US3882526A US416763A US41676373A US3882526A US 3882526 A US3882526 A US 3882526A US 416763 A US416763 A US 416763A US 41676373 A US41676373 A US 41676373A US 3882526 A US3882526 A US 3882526A
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United States
Prior art keywords
processing fluid
film
strip
processing
fluid
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US416763A
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English (en)
Inventor
Irving S Lippert
Joseph A Stella
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Polaroid Corp
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Polaroid Corp
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Filing date
Publication date
Application filed by Polaroid Corp filed Critical Polaroid Corp
Priority to US416763A priority Critical patent/US3882526A/en
Priority to JP10788474A priority patent/JPS5712970B2/ja
Priority to IT53184/74A priority patent/IT1019375B/it
Priority to NL7413285A priority patent/NL7413285A/nl
Priority to GB4615874A priority patent/GB1447195A/en
Priority to CA213,199A priority patent/CA1021979A/en
Priority to FR7437438A priority patent/FR2251839B1/fr
Priority to AU75408/74A priority patent/AU490698B2/en
Priority to BE7000584A priority patent/BE822329A/nl
Priority to DE2454558A priority patent/DE2454558C2/de
Application granted granted Critical
Publication of US3882526A publication Critical patent/US3882526A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03B17/26—Holders for containing light sensitive material and adapted to be inserted within the camera
    • G03B17/265—Holders for containing light sensitive material and adapted to be inserted within the camera specially adapted for motion picture film, e.g. cassettes

Definitions

  • a photographic film cassette having a processing station configured to dispense processing fluid to a film strip following the exposure of the same.
  • the processing station includes a first compartment adapted to receive a container which contains a quantity of processing fluid which is released into a second compartment of the station after a given operation of the film cassette. From the second compartment the processing fluid is passed through a nozzle and dispensed to the film strip.
  • a compressed sponge material Positioned adjacent a wall portion of the first and second compartments is a compressed sponge material which is so located as to contact the processing fluid during the dispensing of the fluid to the film strip.
  • the sponge material is impregnated with a chemical which delays the expansion of the sponge material a sufficient time for film processing to be completed. After this delay, however, the sponge is released for expansion and allowed to absorb the remaining processing fluid within the first and second compartments and subsequently, provide an excellent sealing arrangement within the processing station for sealing the area surrounding the nozzle.
  • Exemplary of one manner of achieving a suitable seal for the nozzle surface is that shown in US. Pat. No. 3,772,975 ofJohn F. Batter, Jr., et al.
  • a thin surface coating is formed on the movable valve and is displaced into Contact with the nozzle to seal the processor nozzle and surrounding area.
  • an alternate manner of sealing the nozzle and surrounding area is described and claimed in a copending application for US. Pat. Ser. No. 416,762, entitled Compressed Open Cell Foam Nozzle Sealing Assembly by Joseph A. Stella and Irving S. Lippert filed simultaneously and assigned in common herewith.
  • a compressed open cell foam material saturated with a coagulant is located on the movable valve and is displaced into contact with the nozzle area subsequent to processing. Upon contacting the processing fluid, the foam is selectively expanded releasing the coagulant for sealing the nozzle and its surrounding area. While the present invention is intended to be employed in combination with the invention described in the above-noted application, it is to be understood that it may also be utilized alone.
  • an important object of this invention is to provide an improved system for applying a processing fluid to a strip of exposed photographic mate rial.
  • Another primary object of this invention is to provide a film cassette having a fluid applicator system including an improved relatively inexpensive and extremely effective means for selectively sealing the latter followingits operation.
  • a further object of this invention is to provide a film handling cassette having a fluid applicator system including a compressed sponge material selectively expandable for sealing the fluid applicator system subsequent to application of the fluid to the film for development.
  • a second compartment or chamber into which the processing fluid is passed as processing of the film is commenced.
  • the second compartment includes a nozzle orifice formed therein through which the processing liquid is applied to the film strip.
  • a piece of compressed sponge material Positioned within select portions of both the first and second compartments is a piece of compressed sponge material.
  • the compressed sponge is formed of a material configured to expand l020 times upon contact with the processing fluid once it is released to the second compartment and the nozzle orifice, the sponge being isolated from the processing fluid in the pod in the first compartment prior to processing.
  • the processing fluid is released from the pod and is passed into the second compartment as the processing operation commences. From the second compartment the processing fluid is applied to the film strip through the nozzle opening located therein.
  • the sponge material is in part, positioned within the second compartment such that the processing fluid contacts the sponge material as it is passed through the nozzle opening.
  • the latter contains a chemical which delays the interaction between the sponge and the processing fluid.
  • the sponge is impregnated with a chemical which isolates the sponge from expanding and absorbing until sufficient time has passed for film processing to occur. At that point, the delaying chemical is counteracted. thereby releasing the sponge for expansion fully within the second compartment and nozzle orifice to absorb any excess processing fluid and provide a seal proximate the nozzle opening. Additionally, the excess fluid in the sponge in the second compartment is partially absorbed by that portion of the sponge located within the first compartment due to the sponge acting asa wick, between the second and first compartment.
  • FIG. 1 is a diagrammatic plan view of a motionpicture film handling cassette embodying theinvention
  • FIG. 2 is a fragmentary plan view of the film strip em- 7 ployed in the cassette shown in-FIG. l; :FIG. 3 is a plan view'of'the coating nozzle which forms a part of the cassette shown in FIG. 1;
  • FIG. 8 is a plan view of portions of the apparatus of FIG. 1;:
  • FIG. 9 is a partial sectional view of the apparatus of F IG. 8 taken through the line 9- 9 during one stage of operation of the apparatus of FIG. l;.and"
  • FIG 10 is a partial sectional view of the apparatus of Y FIG. 8 taken through the line 9 -9 during another stage of operation of the apparatus of FIG. 1.
  • FIG. 1 of :the drawings employs a 'multi-purpose film handling cassette 10 of the type described in the above- -mentioned copending patent application Ser. No. 416,762.
  • the cassette l'0' is configured for substantially automatic processing of the film strip responsive to appropriate-transport of the latter.
  • the cassette of the illustrated-embodiment includes-an applicator system, explained in detail below, which 'is operable in accordance with a particular film transport program controlled by a special projector.
  • the cassette 10 comprises a genjerally parallelepiped'casing or housing 12 constituted byplanar faces or side walls 14 and 16, end walls 18 and 20, and elongated top and bottom edge walls 22 within the'housing l2 in an extended'path around suitable rollers generally designated at 30, 32 and 34 to a take-up spool ori'reel 36 to whichthe opposite end of the film is attached. lnits path within' the housing 12,
  • a photographic ,filrn strip'26 Carried within the housing 12 is a photographic ,filrn strip'26 which is permanently attached at one of its ends, at later explained in regard to FIG. 2, to a rotatable supply spool or reel 28 from which it extends thefilm 26. extends'across anormally inoperative film processing station 38,v explained in detail below, and
  • a prism 42 is mounted behind the film strip 26 in an adjoining relation to both the" opening 40 and to an illumination aperture (not;
  • the film strip 26 comprises a base of any suit 7 able transparent material carrying, at least over a photographically useful length 44, an emulsion or photo- I sensitive coating of any conventional variety as, for example, an emulsion capable of being developed by a monobath processing composition toform apositivel" transparency suitable for projection.
  • sitive layer including both a photosensitive negative emulsion and an'image-receivin'g layer to which a-positive image may be transferred by diffusion duririgde; velopment without necessitating the subsequ'ehtre movalof the emulsion containing its developed negag I tive image.
  • This highly desirable feature is made possible by a developed negative image having low covering power.
  • the strip 26 includes a leader 46 I are configured for cooperation with a drive pawl (not shown) in either a camera or projector for incremental a advancement of the film.
  • a drive pawl Adjacent the trailing end 50, the series of sprocket holes 54 are interrupted by'a first elongated sprocket hole 56 which may forexample,
  • the series of sprocket holes 54 is again interrupted by a second elongated hole 58, longer. than the sprocket. hole 56, and for example, spanning three of the sprocket holes 54. 7
  • the first elongated sprocket hole 56 terminates the advance of the film in the camera (not shown) and thereby establishes an exposure end point
  • the second sprocket hole 58 determines a film take-up or projection end point in the projector apparatus (not shown).
  • These different termination points are employed since it is preferred to advance the film beyond the exposure end point before applying processing composition to the exposed film, and for that purpose, a double film drive pawl (not shown) such I that the film may be carried beyond the first elongated also forming a part of the processing station 38.
  • the film processing station 38 generally comprises a housing 64 having a first compartment portion 66 which retains a prepackaged tublike container 68 of processing fluid.
  • tub-like container 68 forms a second compartment or chamber 70 which cooperates with a coating nozzle generally designated at 72.
  • the processing fluid 73 contained within container 68 which may, for example, be an aqueous alkaline solution such as is described in the aforementioned U.S. Pat. No. 2,861,885, is initially retained within the tublike receptacle 68 by means of a tear tab 74.
  • the tear tab 74 extends about the upper portion of compartment 66 and through a slot 80 formed in an outer upper wall portion 82 of the housing 64.
  • the tear tab 74 extends from the housing 64 to an actuating assembly generally designated at 84.
  • the latter as described in the aforementioned U.S. Pat. No. 3,785,725 extends beneath the supply spool 28 to a hook-like end member 86 which is releasably latched to an upright post 88 and in engagement with a cam member 90.
  • the cam 90 is appropriately displaced by a cassettelatching shaft (not shown) of the projector to drive the hook 86 from the post 88 and into engagement with one of the four teeth 92 of the supply spool 28 under the urging of a spring (not shown).
  • the actuating assembly 84 is similarly rotated to tear the tab 74 from covering relationship with the tub-like container 68 andthereby releases its fluid 73 to the nozzle 72.
  • a pressure pad assembly 96 Located beneath the exterior surface 94 of the nozzle 72 is a pressure pad assembly 96, which is shown in FIG. 1 in the initial position assumed upon assembly of the cassette and prior to processing. As shown in FIG. 5, the film strip 26 normally passes between the nozzle surface 94 and the pad assembly 96. The latter is mounted on and biased towards the nozzle surface 94 by a leaf spring 98, and one end 100 of the assembly 96 is configured to engage the base of the film 26 so as to cooperate with a protuberance 60 of the trailing end thereof as will be explained below.
  • a leaf spring 98 Located beneath the exterior surface 94 of the nozzle 72.
  • nozzle 72 generally includes an orifice or nozzle opening 106 through which fluid is passed from second chamber 70 to film strip 26 during processing.
  • the opening 106 is enclosed by a U-shaped film engaging land or surface portion 108 and a doctor blade surface 110.
  • the doctor blade surface 110 is slightly depressed, for example, up to 0.001 of an inch, below the substantially planar surface portion 108 and selectively control the thickness of the processing fluid applied during the processing operation.
  • the blade surface 110 in conjunction with portions of the U-shaped surface 108, form the perimeter of the orifice 106 and are appropriately sealed following treatment of substantially the complete length of the film strip 26.
  • the nozzle 72 is provided at its sides with depending posts 114 and 116 which provide guidance for the film strip 26 in its path past the orifice 106 and also serve as stops for the sealing member which is described below.
  • valve 120 Displaceably mounted in adjoining relation to the other end 118 of the pressure pad assembly 96 is a sealing member or wedge-like slide-valve 120 which is shown and described in greater detail in the abovenoted U.S. Pat. No. 3,772,975.
  • the valve 120 includes a substantially planar valve plate 122 formed at one end 123 with tapering sides which serve to guide the plate into a juxtaposed relation beneath the nozzle opening 106 as the plate is moved from left to right as seen in FIG. 1. When in that position, a pair of shoulders (not shown) cooperate with the stop posts 114 and 116 to stop the valve 120 in its closed position.
  • a foam material 124 is provided on valve plate 122, the purpose of which will be discussed below.
  • valve plate 122 Carried on either side of the valve plate 122 are depending orthogonal extensions forming a pair of depending cams 126 and 128, respectively, which serve to depress the pressure pad assembly 96 away from film engagement as will be subsequently explained in regards to operation of the cassette.
  • the cam 126 is shorter than the cam 128 in order to facilitate threading of the film strip 26 during assembly of the cassette l0.
  • the cam 128 forms an arm portion 130 extending substantially parallel to the plate.
  • a spring arm extension 132 which engages the film 26 and is adapted to cooperate with the film aperture 62 of its trailing end so as to thereby displace the slide-valve 120 into its closed position at the completion of the initial rewind as later explained with regards to the operation of the cassette.
  • sealing material 124 Carried on the valve plate 122 in proper position for cooperation with the nozzle surfaces bounding the opening 106 is a piece of sealing material 124, configured for providing a contiguous, perimetric contact around and partially within the openings following displacement of the valve 120 to its closed position shown in which the valve 120 is moved to the right of its position in FIG. 5.
  • the sealing material 124 is a compressed open cell foam material saturated with a coagulating chemical.
  • the developer reacts with the coagulating chemical causing it to release the foam material for expansion
  • the compressed open cell foam 124 begins toabsorb the excess processing fluid in an area adjacent'to the I nozzle opening 106.As the foam'124 beings to absorb,
  • the coagulating chemical reacts with the processing fluid, thickening it within the foam material 124 and minimizing further penetration of the processing fluid into the foam mate- 'rial 124.
  • The: employment of the coagulating chemical to saturate the foam material results in the formation of a seal (not shown) at the'top of the expanded foam atthe nozzle opening 106 due to the chemical'interaction between the coagulating chemical and the processing fluid.'This seal forms a hard relatively impenetrable bond at thenozzleopenings for preventing leakage of any excess processing fluid from the film processing station.
  • the processing fluid which may be an aqueous alkaline solution, is configured having a relatively high visco'sityresulting in a relatively slow rate of flow of the fluid on the interior wall portions of tub-like container 68 and compartments 66 and 70 after most of the fluid has been applied to the film strip 25.
  • processing station 38 generally includes a housing 64 having" a generally triangular cross-sectional shape.
  • a first compartment 66 isiprovid edin the right side of'housing 674 for accepting the tub-like processing fluid container 68.
  • Container 68 retains a sufficient quantity of processing fluid to insure the proper coating of the entire --length of filmstrip 26 without being depleted.
  • compartment 70 When container 68 is properly positioned within housing 64 there is formed'a second generally triangularly shaped compartment 70.
  • One side of compartment 70 is de- Ffined by a substantially vertical wall portion 146, the other side by the front wall 136 of container 68 while the bottom is defined bythe nozzle opening 106 and the general perimetal surrounding area 138 (see FIG.
  • the tear tab 74 of containerJ68 retains the processing fluid within container 68 untilprocessing is about to commence. Tear tab 74 coversan aperture 140 7 formed in container 68 through which the processing fluid 73 is passed from container 68 to the second com- 8 partment 70 and consequently. to the coating nozzle Positioned in overlying relationship'with substantial portions of the interiorof housing 64 is a generally "J" shaped sheet of compressed open cell cellulosic sponge material 142. Sponge material 142 overlies first and second compartments66 and 70 and processing fluid container 68 and is retained in place'by a cover plate 144. A long portion 156 of sponge 142 overlies container 68 while a short hooked portion l58'partially.
  • Cover plate 144 is attached to the top 146 of the side walls of housing 64 by any suitable means. In a preferred embodiment of the present inventionthis is achieved by ultrasonic'weld- 7 ing, but any conventional plastic to plastic adhesive 8 would be suitable. Cover plate 144, as seen in FIG. 7,
  • Sponge material 142 is approximately 0.030 inches thick when fully compressed (See FIG. 7). However. it retains the capability of expanding between l0 and 20 times when'the spongematerial is in contactand reacts with the processing fluid. Since processing housing 64 has a depth of approximately 0.420 inches. sponge. material 142 has the expansion capability of totally'filling the portions of both the first and second compartments 66 and 70, respectively which are not occupied by processing fluid container 68 (See FIG. 10).
  • the total time of application of the processing fluid to the film strip is approximately 10 seconds in a preferred embodimentof the film handling cassette. Accordingly, the start of expansion and absorption of the sponge material 142 should be'de layed at least an equal amount of time in order to allow sufficient processing fluid to be applied to the film strip. If such a time delay were not incorporated within sponge material 142, the possibility would exist that it would begin to expand and therefore start to absorb enough processing fluid to deplete the'minimum quantity necessary'for proper film development. Additionally,- sponge expansion would block off the nozzle opening 106 and prevent processing completion. ln.
  • valve foam material 124 Upon reaching its sealing location wherein its de pending posts 114 and 116 are positioned against shoulders (not shown) formed on the valve plate, the valve foam material 124 is brought into contact with remaining portions of the fluid 73 in the area of the orifice 106 and appropriately interact with the latter to soften, partially release its coagulating material, and expand so as to fill any voids existing between the valve plate 122 and the nozzle surfaces 94, 108 and 110. As shown more clearly in the copending application Ser. No. 416,762, the foam material 124 fills the depression provided by the doctor blade surface 110 and prevents any further escape of fluid at this point, thereby trapping any excess fluid within the processing station housing 64. Sufficient coagulating material is released by the interaction of the foam material with the processing fluid to form a miniscus shaped seal (not shown) within the nozzle orifice which cements the two when dried.
  • sponge material 142 is contacted by the processing fluid at the start of the pro cessing operation.
  • short portion 158 of sponge 142 is adjacent opening 140 of container 68 and nozzle opening 106. Accordingly, contact is initially made between sponge 142 and processing fluid 73 at the beginning of processing.
  • Short portion 158 remains in its compressed state due to the polymer impregnation previously discussed.
  • the reaction time required for the polymer to be broken down sufficiently to permit short portion 158 of sponge 142 to begin to expand is approximately equal to the period of application of the processing fluid to the filmstrip 26.
  • the short portion 158 of sponge 142 ideally begins to expand subsequent to complete fluid application and movement of the slide valve and foam material 124 into covering relationship with nozzle opening 106.
  • reaction time requirements are set at approximately I l25 seconds.
  • the exact time of expansion of sponge material 142 is not exactly required as foam material 124 is in a covering relationship with nozzle opening 106 prior to expansion of sponge 142.
  • short portion 158 of sponge 142 expands and absorbs excess processing fluid remaining in the proximity of the nozzle and second compartment 70.
  • the long portion 156 of the sponge does not begin to absorb processing fluid because it is not in contact with the fluid.
  • long portion 156 does absorb an appreciable amount of the processing fluid contained within the short portion 158 of sponge 142 within a relatively short time after sponge expansion. This is due to a wicking function performed by long portion 156.
  • long portion 156 contained between processing fluid container 68 and cover plate 144, remains in an unexpanded state while the short portion 158 absorbs excess fluid trapped near the nozzle opening 106.
  • portion 158 absorbs a sufficient amount of excess fluid it begins to transfer the fluid into the lower portion of long portion 156. While this transfer is delayed by the polymeric impregnation present throughout sponge 142, the long portion 156 does finally absorb an amount of fluid from portion 158 and expands to fill available space thereby providing a more uniform absorption of the fluid throughout the sponge 142.
  • an improved photographic cassette and fluid applicator which efficiently treats photographic film following its exposure; and includes compressed open cell sponge means for effectively absorbing excess processing fluid within the fluid applicator upon completion of the processing operation and immobilizing the excess fluid thereby preventing unwanted fluid movement.
  • a film handling cassette comprising:
  • a housing configured to retain a strip of photographic processing means including an applicator configured to receive means for retaining a quantity of processing fluid to be selectively applied to such a strip of photographic film subsequent to its exposure to process such film;
  • a film handling cassette comprising: ahousing'co'ntaining a str'ipof photographic film;
  • I I 1 processing means including an applicator configured '1 film
  • absorbing means positioned in the path' of application a of such processing fluid during the selective applir cation of such processing fluid tosuchst'rip of photographic material and configured to absorb excess I v I processingfluid only subsequent to the completion I of the selective application of such processing'fluid 1 10 such s'tripof photographic film, said absorbing I I "means including means fordelaying said absorbing ,i-rneans from absorbing such processing fluid during the-application of'such processing fluid'to such strip of photographic film.
  • said delaying means is configured to provide adelayed reaction time of absorptionof said compressed open cell I sponge equal to or greater than the time difference between initial contact of said sponge with said process- .ingsfluid and the time of initial absorption of such pro- I cessing fluid. by said sponge, said delayed reaction time beingofIa quantityat least substantially equal to 'or 'i 'se'lective application of such processing fluid tosuch strip,ofphotographicfilm.
  • delaying means is a delay chemical, said compressed .said sponge.
  • a film handling'cassette comprising: a housing configured to retain a strip of photographic film;
  • film processing means including an applicator configsaid expansion means being configured to expand into blocking association with said means defining w an opening, and expansion delay means associated with said expansion means for delaying the expansion of said expansion means at leastuntil the termination of such fluid application to prevent the processing fluid from passing through said opening defining means subsequent to said fluid application.
  • said applicator is configured having a first compartment configured to receive said meansfor retaining such quantity of processing fluid and a second compartment in which said opening defining means is located and into which such quantity of processing fluid is passed from said retaining means at the initiation of such processing fluid application, said expansion means being located within select portions of said second I compartmentand being configured to expand into said second compartment and into blocking association with said opening defining means subsequent to such processing fluid application.
  • a film handling cassette comprising:
  • processing means including an applicator configured to receive means for retaining a quantity of processing fluid to be selectively applied to such strip of photographic film subsequent to its exposure, said applicator including means defining a dispensing opening through which such processing fluid is applied to such strip of photographic film, such processing fluid being applied from said retaining means through said dispensing opening to such film;
  • absorbing means positioned in the path of application of such processing fluid and configured to absorb excess processing fluid subsequent to the completion of the selective application of such processing fluid to such strip of photographic film
  • said absorbing means including means for delaying said 14 absorbing means for absorbing such processing fluid during the application of such processing fluid to such strip of photographic film in which said absorbing means is configured and positioned relative to said path of application of such processing fluid such that a portion of said absorbing means is in direct contact with such processing fluid during such selective application of such processing fluid to such strip of photographic film, said delaying means providing a time delay to the absorption of said absorbing means equal to at least the time between the initial contact of said absorbing means with such processing fluid and the termination of such selective application of such processing fluid.
  • said delaying means is a chemical impregnated within said absorbing means, said chemical having a reaction time with such processing fluid at least substantially equal to or greater than the time necessary to selectively apply such processing fluid to such strip of photographic film.

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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)
  • Packages (AREA)
  • Coating Apparatus (AREA)
US416763A 1973-11-19 1973-11-19 Photographic processing apparatus employing delayed action expandable sponge Expired - Lifetime US3882526A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US416763A US3882526A (en) 1973-11-19 1973-11-19 Photographic processing apparatus employing delayed action expandable sponge
JP10788474A JPS5712970B2 (nl) 1973-11-19 1974-09-20
IT53184/74A IT1019375B (it) 1973-11-19 1974-09-24 Perfezionamento nelle cassette per film fotografico con tratta mento dopo esposizione
NL7413285A NL7413285A (nl) 1973-11-19 1974-10-09 Filmcassette.
GB4615874A GB1447195A (en) 1973-11-19 1974-10-24 Film cassettes
CA213,199A CA1021979A (en) 1973-11-19 1974-11-07 Photographic processing apparatus employing delayed action expandable sponge
FR7437438A FR2251839B1 (nl) 1973-11-19 1974-11-13
AU75408/74A AU490698B2 (en) 1973-11-19 1974-11-15 Photographic film cassettes incorporating processing applicators
BE7000584A BE822329A (nl) 1973-11-19 1974-11-18 Filmcassette
DE2454558A DE2454558C2 (de) 1973-11-19 1974-11-18 Flüssigkeitsspender für eine Kassette für einen kinematographischen Selbstentwicklerfilm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US416763A US3882526A (en) 1973-11-19 1973-11-19 Photographic processing apparatus employing delayed action expandable sponge

Publications (1)

Publication Number Publication Date
US3882526A true US3882526A (en) 1975-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
US416763A Expired - Lifetime US3882526A (en) 1973-11-19 1973-11-19 Photographic processing apparatus employing delayed action expandable sponge

Country Status (9)

Country Link
US (1) US3882526A (nl)
JP (1) JPS5712970B2 (nl)
BE (1) BE822329A (nl)
CA (1) CA1021979A (nl)
DE (1) DE2454558C2 (nl)
FR (1) FR2251839B1 (nl)
GB (1) GB1447195A (nl)
IT (1) IT1019375B (nl)
NL (1) NL7413285A (nl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228155A (ja) * 1985-04-01 1986-10-11 Mitsubishi Electric Corp エンジンの補機駆動装置
JPS6445549U (nl) * 1987-09-16 1989-03-20

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767297A (en) * 1968-09-23 1973-10-23 Polaroid Corp Motion picture processing and projection system employing multi-purpose cassette
US3772975A (en) * 1973-01-02 1973-11-20 Polaroid Corp Photographic film cassette employing coated processor valve
US3778140A (en) * 1972-02-17 1973-12-11 Polaroid Corp Photographic system comprising film cassette including self-contained processing apparatus and film drive and projection system controlled thereby
US3785725A (en) * 1972-02-17 1974-01-15 Polaroid Corp Processing composition release mechanism for film cassette comprising self-contained film processing system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3641896A (en) * 1969-04-04 1972-02-15 Polaroid Corp Motion picture film cassette-processor system
DE1967032C3 (de) * 1969-04-08 1978-10-19 Ralfs Gmbh, 7346 Wiesensteig Transportbehälter für eine Anlage zum Fördern der Behälter für Schriftgut

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3767297A (en) * 1968-09-23 1973-10-23 Polaroid Corp Motion picture processing and projection system employing multi-purpose cassette
US3778140A (en) * 1972-02-17 1973-12-11 Polaroid Corp Photographic system comprising film cassette including self-contained processing apparatus and film drive and projection system controlled thereby
US3785725A (en) * 1972-02-17 1974-01-15 Polaroid Corp Processing composition release mechanism for film cassette comprising self-contained film processing system
US3772975A (en) * 1973-01-02 1973-11-20 Polaroid Corp Photographic film cassette employing coated processor valve

Also Published As

Publication number Publication date
JPS5712970B2 (nl) 1982-03-13
DE2454558C2 (de) 1983-12-08
BE822329A (nl) 1975-03-14
DE2454558A1 (de) 1975-05-22
FR2251839B1 (nl) 1982-02-19
AU7540874A (en) 1976-05-20
NL7413285A (nl) 1975-05-21
IT1019375B (it) 1977-11-10
GB1447195A (en) 1976-08-25
FR2251839A1 (nl) 1975-06-13
CA1021979A (en) 1977-12-06
JPS5081531A (nl) 1975-07-02

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