Photographic system comprising film cassette including self-contained processing apparatus and film drive and projection system controlled thereby

Claim 2

A photographic cassette, comprising an opaque housing, means forming a film gate in said housing, takeup and supply reels rotatably mounted in said housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said housing responsive to manipulation of said film in said housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, said processing means comprising an actuating element, means responsive to movement of said film in said housing for moving said actuating element from a first position to a second position prior to processing said film, said processing means further comprising an initially sealed container of film processing composition, said actuating element comprising means for opening said container as said actuating element moves from its first to its second position, and an electric signal generating means in said housing responsive to manipulation of said film in said housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said signal generating means comprising at least one conductive element connected to said actuating element for movement therewith, and a pair of electrical contacts in said housing engaging said actuating element and being bridged by said conductive element in one of said positions of said actuating element, said container comprising wall means forming a receptacle open at one side, flange means formed on said receptacle surrounding said sides, a flexible tear-tab having one end initially sealed to said flange means to form a closed container with said receptacle, and a charge of film processing composition initially enclosed in said container by said tear-tab, in which said actuating element comprises a portion of said tear-tag extending beyond said flange means and means responsive to movement of said film toward said supply reel for applying a force to said extending portion to detach at least a portion of said tear-tab from said flange means to open said container, and in which said conductive element comprises a flexible metallic strip attached to said extending portion of said tear-tab.

Claim 3

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in saId cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said cassette housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shutter means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said light source means at least while said film is advanced onto said takeup reel.

Claim 4

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in saId cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said cassette housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shutter means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said light source means at least while said film is advanced onto said takeup reel.

Claim 5

The apparatus of claim 2, in which said signal generator comprises a pair of electrical contacts in said cassette housing, each conductively connected through said cassette housing to an external terminal, and a conductive element in said cassette housing movable in response to manipulation of said film between positions engaging and bridging said contacts and positions out of engagement with at least one of said contacts, and in which one of said signals comprises a conductive path between said external terminals and the other of said signals comprises an open circuit between said terminals.

Claim 6

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said cassette housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in said cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said signal generator comprising at least one conductive element connected to said film and a pair of mutually insulated electrical contacts in said cassette housing extending to electrical terminals outside of said cassette housing, said contacts engaging said film and being bridged by said conductive element over a predetermined range of positions of said film in said cassette housing, and a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said first housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shuttEr means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said light source means at least while said film is advanced onto said takeup reel.

Claim 7

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said cassette housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in said cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said signal generator comprising at least one conductive element connected to said film and a pair of mutually insulated electrical contacts in said cassette housing extending to electrical terminals outside of said cassette housing, said contacts engaging said film and being bridged by said conductive element over a predetermined range of positions of said film in said cassette housing, and a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said first housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shuttEr means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said light source means at least while said film is advanced onto said takeup reel.

Claim 8

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said cassette housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in said cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said processing means comprising an actuating element, means responsive to movement of said film in said cassette housing for moving said actuating element from a first position to a second position prior to processing said film, said signal generating means comprising at least one conductive element connected to said actuating element for movement therewith, and a pair of electrical contacts in said cassette housing engaging said actuating element and being bridged by said conductive element in one of said positions of said actuating element, and a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said cassette housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shutter means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said seconD housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said light source means at least while said film is advanced onto said takeup reel.

Claim 9

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said cassette housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in said cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said processing means comprising an actuating element, means responsive to movement of said film in said cassette housing for moving said actuating element from a first position to a second position prior to processing said film, said signal generating means comprising at least one conductive element connected to said actuating element for movement therewith, and a pair of electrical contacts in said cassette housing engaging said actuating element and being bridged by said conductive element in one of said positions of said actuating element, and a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said cassette housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shutter means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said seconD housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said light source means at least while said film is advanced onto said takeup reel.

Claim 10

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said cassette housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in said cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said processing means comprising an actuating element, and means responsive to movement of said film in said cassette housing for moving said actuating element from a first position to a second position prior to processing said film, said signal generator comprising first and second electrical contacts in said cassette housing engaging said film, at least a first conductive element mounted on said film and bridging said first and second contacts over a predetermined range of positions of said film in said cassette housing, third and fourth electrical contacts in said cassette housing engaging said actuating element, at least a second conductive element connected to said actuating element for movement therewith and bridging said third and fourth contacts in one of said positions of said actuating element, a pair of mutually insulated electrical terminals extending through said cassette housing for cooperation with an external electrical circuit, and conductive means connecting said terminals to said first, second, third and fourth contacts over a series path closed to produce a first signal across said terminals when and only when said first and second contacts and said third and fourth contacts are bridged by said first and second conductive elements, respectively, and open to produce a second signal across said terminals when said first signal is absent, and a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said cassette housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shutter means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said lighT source means at least while said film is advanced onto said takeup reel.

Claim 11

In combination, a photographic cassette, said cassette comprising an opaque housing, means forming a film gate in said cassette housing, takeup and supply reels rotatably mounted in said cassette housing, a strip of film having ends connected to said takeup and supply reels and extending therebetween through said film gate, said film being initially unexposed and primarily coiled on said supply reel and said cassette being adapted to cooperate with a camera for selective exposure of portions of said film in said film gate as said film is advanced onto said takeup reel, processing means in said cassette housing responsive to manipulation of said film in said cassette housing following its initial advance from said supply reel toward said takeup reel to apply processing composition to said film as it is first rewound onto said supply reel, and electrical signal generating means in said cassette housing responsive to manipulation of said film in said cassette housing for producing a first signal or a second signal according as said film has not or has been processed, respectively, said processing means comprising an actuating element, and means responsive to movement of said film in said cassette housing for moving said actuating element from a first position to a second position prior to processing said film, said signal generator comprising first and second electrical contacts in said cassette housing engaging said film, at least a first conductive element mounted on said film and bridging said first and second contacts over a predetermined range of positions of said film in said cassette housing, third and fourth electrical contacts in said cassette housing engaging said actuating element, at least a second conductive element connected to said actuating element for movement therewith and bridging said third and fourth contacts in one of said positions of said actuating element, a pair of mutually insulated electrical terminals extending through said cassette housing for cooperation with an external electrical circuit, and conductive means connecting said terminals to said first, second, third and fourth contacts over a series path closed to produce a first signal across said terminals when and only when said first and second contacts and said third and fourth contacts are bridged by said first and second conductive elements, respectively, and open to produce a second signal across said terminals when said first signal is absent, and a second housing adapted to receive said cassette housing, said second housing comprising opaque wall means adapted to form an enclosure about said film gate when said cassette housing is inserted in said second housing, means forming a projection aperture in said wall means, normally open shutter means operable to close said projection aperture, light source means in said second housing effective when said cassette housing is received in said second housing and energizable to transmit a beam of light through said film in said film gate toward said projection aperture, cyclic drive means in said second housing operatively connected to said reels when said cassette housing is received in said second housing and responsive to an applied signal to sequentially advance said film substantially all onto said takeup reel and then rewind said film substantially all onto said supply reel, means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said first signal for applying a signal to said cyclic drive means and operating said shutter means to close said aperture, and means controlled by said signal generating means when said cassette housing is received in said second housing and responsive to said second signal for applying a signal to said cyclic drive means and energizing said lighT source means at least while said film is advanced onto said takeup reel.

Claim 12

In a system for exposing, processing and projecting strip film, the combination comprising a first housing containing a strip of film connected at its ends to supply and takeup means and passing therebetween through a film gate for cooperation with a camera and with a projection system to be incrementally advanced from said supply means, said takeup and supply means being responsive to selectively applied drive energy to advance said film to said takeup means and return it to said supply means, respectively; film processing means located in said first housing adjacent said film and operable to engage said film and process it when the film is moved with respect to the processing means; means responsive to a condition determined by the state of said film in said housing for operating said processing means; electrical signal generating means controlled by said processing means for producing a first or a second electrical signal according as said processing means has not or has been operated, respectively; a projection system comprising a second housing formed to receive said first housing and form therewith a lighttight enclosure pierced by a projection aperture in said second housing; light source means mounted in said second housing and energizable to direct a beam of light toward said film gate when said first housing is inserted in said second housing; closure means adjacent said projection aperture in said second housing and actuable to close said projection aperture; first drive means in said second housing energizable when said first housing is inserted in said second housing to apply drive energy to said takeup means and intermittently engage said film in said film gate to advance said film to said takeup means; second drive means in said second housing energizable when said first housing is inserted in said second housing to apply drive energy to said supply means to transport said film to said supply means; sequencing means responsive to either said first signal or said second signal to energize said first drive means to transport substantially all of said film to said takeup means and then energize said second drive means to transport substantially all of said film to said supply means; means responsive to said first signal for actuating said closure means at least while said second drive means is energized; and means responsive to said second signal for energizing said light source means.

Claim 13

In a system for exposing, processing and projecting strip film, the combination comprising a first housing containing a strip of film connected at its ends to supply and takeup means and passing therebetween through a film gate for cooperation with a camera and with a projection system to be incrementally advanced from said supply means, said takeup and supply means being responsive to selectively applied drive energy to advance said film to said takeup means and return it to said supply means, respectively; film processing means located in said first housing adjacent said film and operable to engage said film and process it when the film is moved with respect to the processing means; means responsive to a condition determined by the state of said film in said housing for operating said processing means; electrical signal generating means controlled by said processing means for producing a first or a second electrical signal according as said processing means has not or has been operated, respectively; a projection system comprising a second housing formed to receive said first housing and form therewith a lighttight enclosure pierced by a projection aperture in said second housing; light source means mounted in said second housing and energizable to direct a beam of light toward said film gate when said first housing is inserted in said second housing; closure means adjacent said projection aperture in said second housing and actuable to close said projection aperture; first drive means in said second housing energizable when said first housing is inserted in said second housing to apply drive energy to said takeup means and intermittently engage said film in said film gate to advance said film to said takeup means; second drive means in said second housing energizable when said first housing is inserted in said second housing to apply drive energy to said supply means to transport said film to said supply means; sequencing means responsive to either said first signal or said second signal to energize said first drive means to transport substantially all of said film to said takeup means and then energize said second drive means to transport substantially all of said film to said supply means; means responsive to said first signal for actuating said closure means at least while said second drive means is energized; and means responsive to said second signal for energizing said light source means.

Claim 14

In combination, a first lighttight housing, a supply of strip film substantially contained in aid first housing and extending out of and back into said first housing through opposed light-baffled apertures, reversible film transport means connected to said film for moving it through said apertures in either direction over a substantial portion of its length, film processing means mounted in said first housing, control means mounted in said first housing and responsive to said film transport means for operatively connecting said processing means to said film, a second housing comprising wall means forming an enclosure adapted to receive said first housing and formed with a projection aperture, closure means operable to close said aperture, said wall means forming a lighttight enclosure about the portion of said film extending outside of said first housing when said closure means is operated, light source means in said second housing and energizable to direct light through the portion of said film outside said first housing toward said projection aperture, signaling means operatively connected to said first housing for producing a first or a second electrical signal according as said film is unprocessed or processed, respectively, reversible drive means in said second housing adapted to be connected to said film transport means and selectively energizable to drive said film in a first or a second direction, sequencing means responsive to an applied signal and effective when said first housing is reCeived in said second housing for energizing said drive means first to transport said film in a first direction through said apertures and then to transport said film in a direction opposite said first direction through said apertures, means responsive to said first electrical signal and effective when said first housing is received in said second housing for operating said closure means, means responsive to said first signal and effective when said first housing is received in said second housing for applying a signal to said sequencing means, means responsive to said second signal when said first housing is received in said second housing for energizing said light source means, and means responsive to said second signal when said first housing is received in said second housing for applying a signal to said sequencing means.

Claim 15

In combination, a first lighttight housing, a supply of strip film substantially contained in aid first housing and extending out of and back into said first housing through opposed light-baffled apertures, reversible film transport means connected to said film for moving it through said apertures in either direction over a substantial portion of its length, film processing means mounted in said first housing, control means mounted in said first housing and responsive to said film transport means for operatively connecting said processing means to said film, a second housing comprising wall means forming an enclosure adapted to receive said first housing and formed with a projection aperture, closure means operable to close said aperture, said wall means forming a lighttight enclosure about the portion of said film extending outside of said first housing when said closure means is operated, light source means in said second housing and energizable to direct light through the portion of said film outside said first housing toward said projection aperture, signaling means operatively connected to said first housing for producing a first or a second electrical signal according as said film is unprocessed or processed, respectively, reversible drive means in said second housing adapted to be connected to said film transport means and selectively energizable to drive said film in a first or a second direction, sequencing means responsive to an applied signal and effective when said first housing is reCeived in said second housing for energizing said drive means first to transport said film in a first direction through said apertures and then to transport said film in a direction opposite said first direction through said apertures, means responsive to said first electrical signal and effective when said first housing is received in said second housing for operating said closure means, means responsive to said first signal and effective when said first housing is received in said second housing for applying a signal to said sequencing means, means responsive to said second signal when said first housing is received in said second housing for energizing said light source means, and means responsive to said second signal when said first housing is received in said second housing for applying a signal to said sequencing means.

Claim 18

Strip film processing and projection apparatus, comprising: a housing adapted to receive a film cassette containing a supply of strip film of which a portion is exposed through a film gate, film transport means actuable to advance the strip film in either a first or a second direction through the film gate, and means supplying an electrical signal indicating whether or not the film has been processed; cyclic drive means adapted to be operatively connected to the film transport means and responsive to an applied signal to advance the film in said first direction to a predetermined end point and then advance the film in said second direction to another predetermined end point; means forming a projection aperture in said housing; shutter means operable to close said aperture; light producing means in said housing energizable to project a beam of light through the film In the film gate through said projection aperture when a cassette is received in said housing; control means responsive to a cassette received in said housing and said electrical signal for applying a signal to said cyclic drive means and operating said shutter means when said signal indicates that the film has not been processed; and control means responsive to a cassette received in said housing and said electrical signal for applying a signal to said cyclic drive means and energizing said light producing means at least while most of the film is advanced in said first direction when said signal indicates that the film has been processed.

Claim 19

Strip film processing and projection apparatus, comprising: a housing adapted to receive a film cassette containing a supply of strip film of which a portion is exposed through a film gate, film transport means actuable to advance the strip film in either a first or a second direction through the film gate, and means supplying an electrical signal indicating whether or not the film has been processed; cyclic drive means adapted to be operatively connected to the film transport means and responsive to an applied signal to advance the film in said first direction to a predetermined end point and then advance the film in said second direction to another predetermined end point; means forming a projection aperture in said housing; shutter means operable to close said aperture; light producing means in said housing energizable to project a beam of light through the film In the film gate through said projection aperture when a cassette is received in said housing; control means responsive to a cassette received in said housing and said electrical signal for applying a signal to said cyclic drive means and operating said shutter means when said signal indicates that the film has not been processed; and control means responsive to a cassette received in said housing and said electrical signal for applying a signal to said cyclic drive means and energizing said light producing means at least while most of the film is advanced in said first direction when said signal indicates that the film has been processed.