Interlock mechanism for preventing deployment of film loading chamber of a camera

Abstract: Described herein is an improved film cartridge handling mechanism for effecting end-wise loading of a film cartridge into a deployable loading chamber (30) of a camera (28) for automatic film advance into a film transport path on closure of the loading chamber (30). The mechanism also locks the loading chamber (30) in the closed position when the filmstrip is advanced from the film cartridge, and prevents the loading chamber (30) from being deployed when the filmstrip is in the filmstrip transport path. The loading chamber (3) includes an opening (34) into which a cartridge is loaded. The chamber (30) is pivoted into a film supply cavity (32) so that the filmstrip can be withdrawn from its cartridge. Interlock means (64) prevent deployment of the chamber (30) out of the film supply cavity (32) once the filmstrip is being withdrawn from its cartridge by drive means (40).

Description: Cross-reference to Related Applications Reference is made to the following commonly assigned, co-pending Patent Applications, including:- European Patent Application No. 0 628 850 filed 21 May 1994 and corresponding to US Serial No. 08/075969 filed June 11, 1993, entitled APPARATUS FOR CONTROLLING THE MOVEMENT OF A FILM CARTRIDGE FROM A LOADING CHAMBER IN A CAMERA published as US-5 430 515-A; European Patent Application No. 0 627 650 filed 27 May 1994 and corresponding to US Serial No. 08/072619 filed June 4, 1993, entitled CASSETTE EJECTING APPARATUS published as US-5 323 201-A; European Patent Application No 0 670 511 filed 25 February 1995 and corresponding to US Serial No. 08/205001 filed on March 1, 1994, entitled FILM CARTRIDGE LOADING APPARATUS FOR CAMERA published as US-5 483 314-A; US Serial No. 08/204723 filed on March 1, 1994, entitled FILM CARTRIDGE LOADING AND EJECTING APPARATUS FOR CAMERA published as US-5 477 295-A; European Patent Application No. 0 681 203 filed 5 April 1995 and corresponding to US Serial No. 08/227170 filed on April 14, 1994, entitled CAMERA WITH CARTRIDGE HOLDER MOVABLE BETWEEN OPEN AND CLOSED POSITIONS AND MEANS FOR MOVING A FILM CARTRIDGE AT LEAST PART WAY OUT OF THE CARTRIDGE HOLDER, published as US-5 432 573-A. Field of the Invention The present invention relates generally to the field of photography, and more particularly, to an improved film cartridge handling mechanism for effecting end-wise loading of a film cartridge into a deployable loading chamber of a camera for automatic film advance into a film transport path on closure of the loading chamber, for locking the loading chamber in the closed position when the filmstrip is advanced from the film cartridge, and for preventing the loading chamber from being deployed when the filmstrip is in the film transport path. Background of the Invention In conventional cameras, 35mm film cartridges or cassettes are loaded from the side through a hinged camera back into a loading chamber on one side of the image frame exposure gate, and the filmstrip is either manually or automatically directed through the exposure gate and wound on a take-up reel. After all image frames are exposed, the filmstrip is either automatically rewound by a motorized drive or manually rewound into the cartridge. The cartridge is then typically removed by opening the hinged camera back, releasing the drive from the cartridge spool hub and manually withdrawing the cartridge from the loading chamber. More recently, it has been proposed to load and eject conventional 35mm cartridges and "thrust" style film cartridges in an end-wise fashion through a sliding or pivoted door in the bottom, top or side of the camera body and to employ motorized filmstrip winding and rewinding apparatus to advance and rewind the filmstrip with respect to the cartridge. Such cameras are disclosed in various configurations, for example, in US-A-5 049 914, US-A-4 363 547, US-A-5 105 211, US-A-5 155 514, US-A-5 159 365, US-A-5 142 316 and US-A-5 231 438. In the US-A-5 049 914, and US-A-5 231 438, and in the above listed patent applications, a camera loading chamber and mechanism is provided for receiving a thrust style film cartridge which does not have a protruding film leader and has an actuable cartridge door through which the filmstrip is advanced and rewound when the door is opened. Referring now to the drawings and first to Figure 1, it depicts in perspective view a thrust style film cartridge 10, as shown in the above-referenced European Patent Application No. 0 681 203, containing a filmstrip wound on and attached at one end to a spool (both obscured within the opaque plastic cartridge shell). The two ends of the spool hub 16 are exposed through light-tight, bearing openings in the free end 11 and seated end 12 of the cartridge 10, so that the spool and attached filmstrip may be rotated by rotation of the spool hub 16 upon seating of the cartridge 10 in a camera film loading chamber. The film cartridge 10 is shaped to form an elongated snout or lip 14 having a filmstrip passage door 18 therein (depicted in a closed position). The door 18 fits in a door opening 24 and is attached to a rotatable door drive hub 26 that extends through openings in the free end 11 and seated end 12. The door 18 and rotatable door drive hub 26 are formed in one piece and comprise a light lock for the cartridge when fitted into the door opening 24 that replaces the passive, relatively tight, plush lined light lock employed for many years on 35mm film cartridges. The free end of the filmstrip may be thrust out of the cartridge shell 12 through the door opening 24 by application of counter-clockwise rotary motion to the door drive hub 26 to open the door 18 and by the application of clockwise rotary motion to the spool hub 16 at the seated end 12 to thrust its leading end out past the open door 18. A retention slot 20 is depicted formed in the inner surface of cartridge snout 14 extending longitudinally between portions 22 and 23 of respective ends of cartridge snout 14 and cartridge shell 12. The retention slot 20 may be employed for cooperation with a spring loaded retention member of the type described in the above referenced '969 patent and '170 application for preventing the cartridge 10 from falling out of or being forcibly ejected completely from the loading chamber when it is deployed in the manner described therein. In particular, the slot 20 may be engaged by a retention member during movement of the film cartridge 10 from the camera loading chamber as proposed in certain of the above-referenced co-pending applications. Various improved apparatus and methods are disclosed therein for receiving and ejecting the cartridge from the loading chamber, wherein the retention slot 20 is engageable by various retention members upon partial insertion into the chamber and remains in engagement upon ejection to prevent the film cartridge 10 from falling out of the loading chamber. The user may typically complete the withdrawal of the cartridge 10 by simply pulling the partially ejected cartridge out, overcoming the retention force. In certain of the above-listed patents and in all of the above-listed patent applications, the film cartridge loading chamber or holder is either deployable outward from the camera body, as shown for example in US-A-5 142 316, US-A-4 363 547 and US-A-5 105 211, or is accessible through an end cover as shown in US-A-5 231 438. Latch mechanisms are required for closing the end covers or securing the deployable chamber in the closed position. US-A-5 142 316 patent discloses a typical outward deployable cartridge holder for accepting a film cartridge. In one embodiment, the holder is pivotally supported by a shaft for movement between an outwardly deployed open position in which the holder projects transversely from the camera body and a closed position in which the cartridge holder stands vertically in the camera body. Upon movement into the closed position and with a film cartridge inserted, the upper end of the cartridge is engaged by a lever to hold the cartridge down. The cartridge holder is normally urged towards the open position. A locking lever operates to retain the cartridge holder in the closed position and is coupled with a knob exposed to the exterior of the camera body. A pin extending from the cartridge holder chamber is engaged by the locking lever. The pin is released from the locking lever by manually operating the knob, and the cartridge holder then pivots toward the open position. In all of the above described mechanisms, the film spool in the film cartridge is engaged at one end by a motorized or manual rewind drive mechanism (for conventional film cartridges) or by a motor driven advance and rewind drive mechanism (for thrust type film cartridges). The other end of the cartridge is typically left free or pressure is applied to the free end (as in US-A-5 142 316 described above) and/or laterally to the side of the film cartridge snout or lip by operation of the retention members described above. In certain of the above-listed patents and in all of the above-listed patent applications, the film cartridge loading chamber or holder is either deployable outward from the camera body, as shown for example in US-A-5 142 316, US-A-4 363 547 and US-A-5 105 211, or is accessible through an end cover as shown in US-A-5 231 438. Latch mechanisms are required for closing the end covers or securing the deployable chamber in the closed position. US-A-4 363 547 discloses an apparatus for mounting a film magazine into camera that includes a magazine receiving casing which is adapted to receive a film magazine therein and which includes a drive shaft for driving a film winding shaft of the magazine for rotation. The casing is disposed in a tiltable manner with respect to a camera body to permit the insertion or removal of a film magazine into or from the casing. US-A-5 105 211 discloses a camera having a camera body that has a film loading apparatus that includes a film rewinding shaft disposed upright within the camera body. When a film cassette is inserted into the camera body, it is cradled in a cassette holder then swings vertically between an inclined open position and a closed upright position. When the cassette holder has been swung wholly within the camera body, the film rewinding shaft is fitting in a lower end of a spool of a film cassette held in the cassette holder. US-A-5 142 316 discloses one design of an outward deployable cartridge holder for accepting a film cartridge. In one embodiment, the holder is pivotally supported by a shaft for movement between an outwardly deployed, open position in which the holder projects transversely from the camera body and a closed position in which the cartridge holder stands vertically in the camera body. Upon movement into the closed position and with a film cartridge inserted, the upper end of the cartridge is engaged by a lever to hold the cartridge down. The cartridge holder is normally urged towards the open position. A locking lever operates to retain the cartridge holder in the closed position and is coupled with a knob exposed to the exterior of the camera body. A pin extending from the cartridge holder chamber is engaged by the locking lever. The pin is released from the locking lever by manually operating the knob, and the cartridge holder then pivots toward the open position. Prevention of deploying the cartridge holder with the filmstrip advanced across the exposure gate does not appear to be mentioned. If a filmstrip were extending from the cartridge, it would interfere with the opening motion but only after the deployable film chamber opened partially. The filmstrip could be fogged and damaged in the process. US-A-5 231 438 discloses a stationary film loading chamber with an end opening covered by a loading chamber door that can be opened or closed by manipulation of a slidable door latch so that a thrust film cartridge of the type described above can be loaded or ejected through the open loading chamber door. As indicated in US-A-5 231 438, it is not desirable to allow the loading chamber door to be opened when the filmstrip is extending out of the cartridge door or "light valve", since the filmstrip image frames would be fogged. To prevent this from happening, the loading chamber door latch cannot be released by the user if the film door cannot be closed because the filmstrip is extending through it. This approach depends on contact of the film door with the filmstrip image frame. The prior art as described above lacks a simple system for detecting the extension of the filmstrip out of the film cartridge and into the filmstrip transport path, particularly for a thrust cartridge, and a deployable film loading chamber that ensures that no damage will be done to the filmstrip or filmstrip image frame. Summary of the Invention It is therefore a principal object of the present invention to provide an interlock mechanism that inhibits opening of a deployable film loading chamber from the closed position to the open position thereof when the filmstrip is present in the camera film transport path. It is a further object of the present invention to provide an interlock mechanism that senses the presence of the filmstrip in the filmstrip transport path without contacting the filmstrip or engaging the image frame of the filmstrip. It is a still further object of the invention to provide an interlock mechanism that detects and is deflected by a filmstrip in the filmstrip transport path and does not require any modification of the filmstrip or film cartridge. In accordance with one aspect of the present invention, there is provided a camera for receiving a photographic filmstrip cartridge, the camera comprising a body enclosing a camera frame having a film supply cavity and a filmstrip transport path, and a film loading chamber for receiving the film cartridge which has a seated end and a free end with end openings through which a spool hub of a filmstrip spool is exposed, deploying means for pivotally moving the film loading chamber between a deployed position for receiving the film cartridge, seated end first, into an end opening thereof, and a closed position wherein the film loading chamber is pivoted into the film supply cavity to position the film cartridge in alignment with the filmstrip transport path, filmstrip drive means for advancing filmstrip from the film cartridge into the filmstrip transport path when the loading chamber is moved to the closed position, interlock means for sensing the presence of the filmstrip in the filmstrip transport path for inhibiting deployment of the loading chamber from the closed position to the deployed position by the deploying means. Preferably, the interlock means comprises an interlock lever having a first end, a second end and a pivotal mounting point positioned in relation to the filmstrip transport path for pivotal movement of the first end into the filmstrip transport path in the absence of a filmstrip therein, and the second end into an interfering engagement with the deploying means for inhibiting deployment of the loading chamber to the deployed position. Advantageously, the filmstrip drive means engages the filmstrip spool hub at a first end thereof when the loading chamber is moved to the closed position for advancing the filmstrip from the film cartridge into the filmstrip transport path, and into deflecting contact with the first end of the interlock lever to position the second end thereof into interfering engagement with the deploying means. In one embodiment, the camera further includes latch means for latching the film loading chamber in the closed position upon pivotal movement thereof into the film supply cavity; and means coupled with the latch means for engaging the filmstrip spool hub at the second end thereof to align the filmstrip with respect to the film transport path. The first end of the interlock lever may engage a side edge of the filmstrip outside the image frame area thereof. In another embodiment of the invention, the camera further includes latch means for latching the loading chamber in the closed position upon pivotal movement thereof into the film supply cavity; and means coupled with the latch means for engaging the filmstrip spool hub at the second end thereof to align the filmstrip with respect to the film transport path, wherein the filmstrip drive means engages the filmstrip spool hub at a first end thereof when the loading chamber is moved to the closed position for advancing the filmstrip from the film cartridge into the filmstrip transport path and into contact with the interlock means. Preferably, the film cartridge is of the type having a cartridge door movable on a door hub between an open position for advancing the filmstrip onto or from the filmstrip spool and a closed position for enclosing the filmstrip entirely within the cartridge and the camera includes door drive means for engaging the door hub and for opening the cartridge door to allow the filmstrip drive means to advance the filmstrip into the filmstrip transport path upon movement of the film loading chamber into the closed position by the deploying means and to contact the interlock means. It is preferred that the film cartridge includes a cartridge door movable on a door hub between an open position for advancing filmstrip onto or from the filmstrip spool and a closed position for enclosing the filmstrip entirely within the cartridge and the camera includes door drive means for engaging the door hub and for opening the cartridge door to allow the filmstrip drive means to advance the filmstrip into the filmstrip transport path upon movement of the film loading chamber into the closed position by the deploying means and to contact the interlock means. In another embodiment of the present invention, there is provided a camera having a film transport path and a film supply cavity in a camera frame for receiving a photographic filmstrip cartridge having a filmstrip wound around a filmstrip spool within a cartridge housing, the cartridge housing having a seated end and a free end with end openings through which a spool hub of the filmstrip spool is exposed, a film door covering a door opening extending between the seated end and the free end and pivotal on a door opening hub between a door open and a door closed position. The camera has a film cartridge loading chamber for receiving the filmstrip cartridge through an open end thereof; deploying means for pivotally moving the film loading chamber between a deployed position for receiving the film cartridge and which extends the chamber out of the film transport path and a closed position wherein the film loading chamber is pivoted into the film supply cavity to position the film cartridge in alignment with the filmstrip transport path; latch means for latching the film loading chamber in the closed position upon pivotal movement thereof into the film supply cavity and for engaging the filmstrip cartridge; door drive means for engaging the door hub and for opening the cartridge door to allow the filmstrip to be advanced into the filmstrip transport path upon movement of the film loading chamber into the closed position by the deploying means; filmstrip drive means for advancing the filmstrip from the film cartridge into the filmstrip transport path when the loading chamber is moved to the closed position and latched; and interlock means for sensing the presence of the filmstrip in the filmstrip transport path and for inhibiting release of the latch means and deployment of the film loading chamber from the closed position to the deployed position by the deploying means. The latch means may further comprise means coupled with the film loading chamber for providing a latch slot, a movable plate attached for movement with respect to the camera frame from an extended position to an engaged position, a latch pin mounted to extend from the movable plate and providing the reference point, and means for effecting movement of the movable plate between the extended and engaged positions for engaging the latch pin in the latch slot in the engaged position and for spacing the latch pin out of the latch slot in the extended position. Brief Description of the Drawings For a better understanding of the present invention, reference will now be made, by way of example only, to the accompanying drawings in which:- Figure 1 is a perspective view of a thrust type film cartridge usable in the film loading apparatus of the present invention; Figure 2 is a perspective, partial view of the components of a first embodiment of the positive film cartridge loading and ejecting apparatus of the invention in the deployed position for receiving a film cartridge in relation to a camera body; Figure 3 is an exploded perspective view of the components of the film loading apparatus shown in Figure 2; Figure 4 is a perspective assembly view of certain of the components shown in Figure 3; Figures 5 and 6 are perspective views of certain of the components shown in Figure 3 assembled to a camera frame providing a film transport path; Figure 7 is a bottom perspective view of the assembly shown in Figure 3 depicting the mechanism for opening and closing the film cartridge door; Figures 8 to 11 are further perspective views of the operation of the film loading apparatus during the steps of latching the loading chamber into the closed position with certain components of the assembly removed for ease of illustration; and Figures 12 to 14 are further perspective views of the operation of the film loading apparatus depicting the manner in which the loading chamber is deployed from the closed position shown in Figure 11 to the open position shown in Figure 2. Detailed Description of the Invention The invention is disclosed as being embodied preferably in a still-picture camera employing a thrust type film cartridge of the type shown in Figure 1. The specific camera in which the present invention may be incorporated may take any of the forms known in the art having a film loading chamber on one end of the camera body and a take-up chamber for the filmstrip on the other end of the camera body and an image frame exposure gate between the two ends. A battery powered, reversible motor drive is provided to engage the spool of the film cartridge after it is loaded to advance the leading end of the filmstrip from the film cartridge through the exposure gate and into the takeup chamber. During the taking of photographs, the filmstrip is advanced by rotation of a takeup spool an image frame at a time. The film cartridge spool is rotated in the reverse direction to rewind the filmstrip from the takeup chamber back into the film cartridge after all image frames are exposed. In that process, the filmstrip is guided along its edges between spaced rails and a backing plate to be aligned as nearly as possible with an image focus plane in the exposure gate. Photographic exposures are made in the image frames in the exposure gate through operation of the aperture setting and shutter release mechanisms of the camera in a manner well known in the art. Because the features of this type of camera are generally well known, the description which follows is directed in particular to camera elements forming part of or cooperating directly with the preferred embodiments of the film loading chamber apparatus. It is to be understood, however, that other elements not shown or described may take various forms known to one of ordinary skill in the art. The preferred embodiment of the present invention is described in the context of the apparatus disclosed in the co-pending European Patent Application No. 0 710 874 filed concurrently herewith and corresponding to USSN 08/334289 published as 5 530 508. The secure and accurately positioning of the film cartridge is emphasized so that the filmstrip is aligned to the image focus plane of the camera despite position variances that arise due to dimensional tolerances between the outer dimensions of the filmstrip cartridge 10 and the inner dimensions of the magazine of the loading chamber and the reduced size of the film cartridge. In accordance with a principal aspect of the present invention, the deployment of the film loading chamber disclosed therein is inhibited when the filmstrip is extended into the camera filmstrip transport path. Figures 2 to 14 depict a preferred embodiment of a film loading mechanism for a side deployable film loading chamber that provides interlock of the deploying mechanism with the presence of a filmstrip in the film transport path in the film loading apparatus that also provides for the accurate and precise positioning of the film cartridge and the filmstrip contained therein with respect to the film transport path of the camera. Figures 5 and 6 specifically depict an interlock lever mechanism for detecting the filmstrip presence in the film transport path and for inhibiting deployment of the film loading chamber in conjunction with the present invention. The following thus describes the invention in the context of a preferred embodiment in which it may be implemented. For reference purposes, the following definitional terms relating to the alignment of the filmstrip with the filmstrip transport path are set forth. Spool hub 16 of the film cartridge 10 is engaged at the film cartridge seated end 12 by a drive spindle at a locator point "A" and at the free end 11 at a locator point "B" by a B-point locator pin as the loading chamber is latched in the loaded or closed position, so that the axis of rotation of the filmstrip spool is fixed. Similarly, the door drive hub 26 is engaged at the seated end of the cartridge 10 by a cartridge door door driver carried by the film loading chamber to define a locator point "C" for the cartridge lip 14. A fourth locator point "D" may be provided optionally to fit within the other end of the single piece door drive hub 26 exposed through an opening of the free end of the film cartridge end. The locator points "A" and "B" are aligned to define a first axis referenced orthogonally to the hinge axis of the deployable film chamber and in parallel with the filmstrip transport path of the camera. The locator point "B" is referenced to a latch pin for engaging and latching the film loading chamber in the loaded position. The locator point "C", and optional locator point "D", is referenced to the hinge mechanism to align the cartridge end 14 with the filmstrip transport path. Turning to Figure 2, the film cartridge 10, Figure 1, is intended to be inserted end-wise into the magazine 34 of a deployed film loading chamber 30 that is pivotable at one hinged end 38 thereof out of a film supply cavity 32 in the side of a camera body 28 of the type described above. The elongated magazine 34 is shaped to fit the outer shape of the cartridge housing 12, Figure 1, and to receive the full length of the cartridge 10, Figure 1, within it, with the seated end 12, Figure 1 of the film cartridge 10, Figure 1, inserted downward into the magazine 34. When the film cartridge is received, the door drive hub 26 of the film cartridge 10, Figure 1, is engaged and centered by an cartridge door driver (not shown) as the C-point locator, which is then ready to open the door 18. Similarly, the end of the spool hub 16, Figure 1, accessible from the seated end 12 is seated and centered onto the drive spindle providing the A-point locator. The optional D-point locator pin 78 in alignment with the cartridge door driver is also depicted in Figure 2. As the film loading chamber 30 is pivoted into the film supply cavity 32, the loading chamber 30 is latched closed in a manner described below. Full closure and latching of the film loading chamber 30 into film supply cavity 32 also effects the centering of the spool hub 16, Figure 1, accessible from the free end 11, Figure 1, onto a B-point locator pin (described below). The door opening driver is simultaneously rotated to open the door 18, Figure 1. The drive spindle 45 (shown in Figure 10) is connected through a gear drive train (not shown) to a schematically illustrated filmstrip advance and rewind drive mechanism 40. The drive mechanism 40 may be then operated to advance the filmstrip out through the door opening 24 past the open door 18. The drive mechanism 40 is shown schematically, and it will be understood that, in practice, a drive motor is mounted in the camera body and a reduction gear drive assembly is provided between the drive motor and a drive spindle 45 (shown in Figure 10) that engages the spool hub 16 when the film cartridge 10, Figure 1, is loaded into the magazine 34 of the film loading chamber 30. Such a motor and gear drive assembly is shown, for example, in US-A-2 548 549, incorporated by reference herein. In this closed position, the cartridge door 18, Figure 1, is aligned along the axis of the A-point locator and the B-point locator pin and stabilized from rotation about the axis by the engagement of the cartridge door driver with the door opening hub 26 providing the C-point locator. The filmstrip is aligned with a filmstrip passage 42 in the loading chamber 30 through which the filmstrip leading end may be advanced toward the camera exposure gate and take-up chamber (not shown). The filmstrip passage 42 is aligned precisely to film guiding rails 33, 33' (shown in Figures 5 and 6) of the camera body 28 so that the filmstrip leading end is thrust out of the filmstrip cartridge 10 in alignment therewith and does not twist or stub as it is advanced. After the filmstrip leading end is advanced a certain distance, it enters the takeup chamber and is wound about a takeup hub which is rotated during subsequent image frame advancement as described above. To summarize the operation of the preferred embodiment, the latching of the film loading chamber 30 when it is manually pushed into the film supply cavity 32 is effected by the downward movement of a laterally extending latch pin from a B-plate 50 (Figure 3), which is affixed for relative downward movement with respect to the camera body 28, into engagement with the latch slot 102 of a mounting plate 92 in a manner described more fully below. At the same time, a downwardly projecting B-point locator pin 48 (Figures 5 & 6) extending from the horizontal extension 59 of the B-plate 50 engages and centers the spool hub 16 accessible from the free end 11 of the cartridge while the other end of the spool hub 16 is seated on the spindle 45 of the film drive mechanism 40. As downward movement of the B-plate is completed, the cartridge door driver 44 (Figure 2) seated in the rotatable door hub 26 rotates to open the door 18. In this manner, the film cartridge 10 is fixedly centered in the magazine 34 by positive seating of its spool end hub 16 axially between the drive spindle 45, the A-point locator and the B-point locator pin 48, wherein the loading chamber 30 is also latched to the B-plate 50. Since the B-plate 50 and the lower hinged end 38 are secured to the camera body 28, the film cartridge snout 14 and door 18 are precisely aligned and stably retained in relation to the filmstrip transport path of the camera body 28. The components of the preferred embodiment are depicted in greater detail in the exploded view of Figure 3, the assembly view of Figure 4 and the partial perspective views of Figures 5, 6 and 7. The film loading chamber 30 is constructed of a single piece of molded plastic or the like having the magazine 34 and filmstrip passage 42 formed therein and a hinge pin receptacle 72 at the hinged end 38 thereof. The film loading chamber 30 is also formed to have attachment points and recesses to accommodate certain of the component group 60 for seating and partially ejecting the film cartridge 10 depicted in Figure 3, as described below. A mounting plate 62 is attached to the camera body 28 (Figure 2) and the B-plate 50, while associated components are mounted to the mounting plate 62 for relative movement with respect to it and the components attached to the film loading chamber 30. The interconnection between the film loading chamber 30, including the component group 60, is made through the cocking lever 64 and the lower hinge formed by the hinge pin 70 fitting within the hinge pin receptacle 72 in the hinged end 38 of the film loading chamber 30 and the hinge pin receptacle 74 attached to the mounting plate 62, respectively. The cartridge door driver assembly, including the driver 44 attached to cartridge door driver lever 80 and spring 84 is positioned on the base of the film loading chamber 30 for insertion into the door hub 26 and rotation on upward and downward movement of the B-plate 50 in a manner described below. The drive spindle 45, providing the A-point locator that makes engagement with the spool hub 16 when the film cartridge 10 is loaded into the magazine 34, is obscured from view in Figure 3 but is shown in Figure 10. The component group 60 includes detent spring 86, ejector latch stud 88, ejector latch 90, mounting plate 92, slide ejector 94, retaining plate 96, slide ejector stud 98, and slide ejector spring 100. The component group 60 is mounted against the vertical side wall 31 of the film loading chamber 30 in the sequence depicted in Figure 3 to form the assembly which is depicted in Figure 2. The component group 60, although changed in certain details, operates in cooperation with wipe-by cam screw 114, wipe-by cam spring 116, and wipe-by cam 118 in a manner described in the above-referenced European Patent Application No. 95 104 998.0, which is not specifically illustrated in this application. In general, the wipe-by cam 118 and spring 116 are mounted to the camera frame 29 (shown in Figure 5). The ejector latch 90 is attached to the mounting plate 92 for pivotal movement by the ejector latch stud 88 so that pin 71 bears against the wipe-by cam 118. Slide ejector 94 is attached between retaining plate 96 by slide ejector stud 98 extending through the elongated slot of the slide ejector 94 and attached to the mounting plate 92. Slide ejector spring 100 is attached between pin 75 and tab 73. Tab 76 extends against the seated end of cartridge 10. When a cartridge 10 is inserted into the magazine 34 of the loading chamber 30 in its deployed position and pressed to the fully seated position, the tab 76 is pressed downward and slide ejector spring 100 is tensioned. Detent spring 86, which is attached to a pin (obscured) between plate 92 and surface 31 is biased to extend into the slot 20 of the film cartridge 10, when the cartridge is seated within the magazine 34. The free end 79 of ejector latch 90 engages the cartridge retention slot 20, holding the cartridge 10 in its seated position, preventing the cartridge from falling to the detent spring 86 in case the camera is inverted at this point. As the film loading chamber 30 deploys into the open position, the pin 71 on the slide ejector latch 90 strikes the underside of the wipe-by cam 118, which does not rotate when struck from this direction. The pin 71 is therefore forced to slide over the cam surface of wipe-by cam 118, causing the free end 79 of ejector latch 90 to withdraw from the cartridge retention slot 20. The withdrawal of the free end 79 allows the cartridge to rise in response to the biasing force of the slide ejector spring 100. The slide ejector 94 is released when the latch surface is withdrawn from the tab 76. The cartridge 10 is then lifted by the tab 76 into an ejected (unseated) position for manual withdrawal by the user. When the components of group 60 are assembled to one another and the film loading chamber 30, the latch slot 102 of mounting plate 92 is positioned to receive a latch pin (obscured from view) extending horizontally from the vertical plate extension 55 of B-plate 50. At the same time, the B-point locator pin 48 makes engagement with the spool hub 16 to securely align the film cartridge 10 and the film loading chamber 30 in the manner described above. Turning to the mounting plate components depicted in Figure 3, they include the mounting plate 62, B-plate 50, cartridge door driver lever actuator 106, spring plate 108, spring plate spring 110, B-plate spring 112, and B-plate trigger 120. These components are assembled as shown in the assembly view of Figure 2, except that the springs 110 and 112 have been removed in that view to clarify the illustration. Figure 4 presents a further perspective view taken at a different angle with the springs 110 and 112 attached at one end to separate tabs 91 and 93, respectively, on the spring plate 108 and at the other end to tab 95 on the mounting plate 62 and to tab 97 on the B-plate 50, respectively, (shown in Figure 3). As shown in Figure 4, the springs 110 and 112 are extended, since the B-plate 50 is extended above the loading chamber 30 into its extended position. The B-plate spring 112 tends to pull the B-plate 50 and the spring plate 108 together. The spring plate spring 110 tends to pull the spring plate 108 upward with respect to the mounting plate 62 in the pre-latch position. As shown, the B-plate 50 is poised to move downward to make the engagement with the cartridge spool hub and latch slot in this position. The B-plate spring 112 is stronger than the spring plate spring 110 because the force of the B-plate spring 112 is required to seat the film cartridge 10. The force of the spring plate spring 110 lifts the B-plate and the spring plate 108 away from the free end of the cartridge 30 during deployment of the film loading chamber 30. The mechanical attachment plate 62 is physically attached to the camera body 28 capturing the cartridge door driver lever actuator 106, the B-plate 50, the spring plate 108, the B-plate trigger 120, and the springs 110 and 112 therebetween. The B-plate trigger 120 is captured in a slot in the mechanical attachment plate 62. These components are viewed from the camera body side in Figures 2 and 4 and are further viewed from inside the film supply cavity 32 assembled to the camera frame 29 in Figures 5 and 6. The vertical plate section 55 of the B-plate 50 nests between the vertical mechanical plate 62 and the vertically disposed spring plate 108 as described above, and-the horizontal plate extension 59 extends over the open end of the magazine 34. When so assembled, the B-plate 50 and the spring plate 108 are slidable vertically up and down between the extended and engaged positions with respect to the mechanical attachment plate 62 and the cartridge door driver lever 106. The range of movement of the B-plate 50 and the spring plate 108 is provided by the elongated slots 54 and 56 in the vertical plate extension 55, which nests into studs 66 and 68. The studs 66 and 68 also extend through elongated openings 109 and 111 in the spring plate 108 and are attached to the camera frame 29 by attachment screws (not shown) that are screwed in through the film supply cavity 32 with the film loading chamber 30 tilted outward. A further point of attachment with camera frame 29 may also be provided adjacent to the hinge receptacle 74 in the mechanical plate 62. The manner in which the B-plate 50 and the spring plate 108 are moved longitudinally in the vertical or Z-direction with respect to the studs 66 and 68 and mounting plate 62 will be described in detail below. As shown in Figures 1 to 3, the cocking lever 64 and a cocking lever spring 63 are pivotally mounted at axle end 124 on an axle pin (not shown) within the recess 39 of the loading chamber 30, so that the spring 63 biases the cocking lever to rotate rearwardly in the film supply cavity 32. A pin 126 at the other end of the cocking lever 64 engages a shoulder 57 in vertical plate extension 55, and also bears against the sloped notch 113 of the spring plate 108. Referring now to Figures 5 and 6, the above described assembly is oriented against the end of the interior camera frame 29 (with the hinge member 74 removed from the mechanical plate 62 for clarity of view). The camera frame 29 is schematically depicted as providing first and second film guide rails 33, 33' of a film transport path 35 which is aligned with the elongated film passage 42 of the film loading chamber 30. It will be understood that the backing plate of the camera body that defines the other side wall of the film transport path 35 is also not shown in Figures 5 and 6. Figures 5 and 6 show other features, including the location of the cocking lever 64 with respect to the B-plate 50 and the spring plate 108, Figure 2, and, particularly, a locking mechanism for preventing deployment of the loading chamber 30 when a filmstrip is in the film transport path 35. In this regard, when a filmstrip is not present in the film transport path 35, the interlock lever 122 pivots counter-clockwise under the force of an internal torsion spring wound about an axle pin of interlock lever 122, so that the interlock lever end or arm 123 is biased to extend below the free end of the cocking lever 64. In this position shown in Figure 5, the interlock lever arm 123 does not inhibit the pivotal movement of cocking lever 64 about its pivot end 124 mounted to the film loading chamber 30 in the manner depicted in Figure 2. Referring to Figure 6, when a filmstrip 128 is present in the film transport path 35, the interlock lever 122 is pivoted clockwise by the filmstrip 128 lower edge contacting the film transport path lever end or arm 125 (Figure 2). The filmstrip 128 is restrained to be relatively flat in the transport path 35 by the pressure of the rails 33, 33' against a backing plate (not shown) and consequently is fairly rigid in the cross-film direction. In order for the camera user to deploy the loading chamber 30, it is necessary to move the free end of the cocking lever 64 outward to release pin 126 from the shoulder 57 of vertical extension plate 55 and notch 113 of the spring plate 108 in a manner described below. When the filmstrip 128 is in the film transport path 35 as shown in Figure 6, the filmstrip edge contact overcomes the spring bias to rotate the interlock lever arm 123 into an interference position blocking outward movement of the free end of the cocking lever 64. Thus, as long as the filmstrip 128 is in the filmstrip transport path 35, the user cannot move the free end of the cocking lever 64 to deploy the film loading chamber. The vertical plate extension 55 also includes a further horizontally extending drive pin 132 shown in Figures 5 and 6 that engages the angled edge of the vertically extending plate 107 of the cartridge door driver lever actuator 106. The cartridge door driver lever actuator 106 is also depicted in Figures 3 and 4 as having the horizontal or X-direction extending lever arm 105 and the vertical or Z-direction extending arm 107. The horizontal extending lever arm 105 extends through elongated slot 67 in the mechanical mounting plate 62 and interacts with the cartridge door driver lever 80 to control the rotary motion of the cartridge door driver 44, as the film loading chamber 30 is pivoted into the closed position in a manner to be described hereafter. Turning now to Figure 7, it depicts a perspective view of the underside of the film loading chamber 30 in relation to the mechanical mounting plate 62 in order to show the interaction of the horizontal lever arm 105 of the cartridge door driver lever actuator 106 with respect to the cartridge door driver lever 80. In Figure 7, it may be observed that the horizontal plate extension 105 extends through the elongated opening 67 to contact the cartridge door driver lever 80. A bushing surrounding an opening 37 in the film loading chamber 30 is also provided to receive and retain the drive spindle 45 and attached gear (not shown) of the drive mechanism 40 (Figure 2) for rotation in the opening 37. Referring to Figure 10, the drive spindle 45 extending into the magazine 34 engages the spool hub 16, Figure 1, of the seated end 12 of the filmstrip cartridge 10, Figure 1, when it is manually inserted and seated in the magazine 34. The drive gear and drive spindle 45 are therefore movable with the film loading chamber 30 between the deployed and closed positions in a manner shown, for example, in above-referenced US-A-4 363 547. The cartridge door driver lever actuator 106, Figure 11, is depicted in the position which keeps the film cartridge door 18 closed. The film chamber door 18 is opened upon complete pivoting movement of the film loading chamber 30 back into the film supply cavity 32 after a film cartridge 10 is loaded into the magazine 34 and downward movement of the B-plate 50 and drive pin 132 against the sloped edge of the vertical plate extension 107. When that occurs, the horizontal plate extension 105 moves horizontally in the Y-direction (Figure 2), that is, along the slot 67 from the position depicted in Figure 7. When that movement occurs, the cartridge door driver lever 80 is rotated and in turn rotates the cartridge door driver 44 in the clockwise direction .(from the point of view of Figure 7) against the force of the cartridge door spring 84 (Figure 3). The cartridge door driver 44 is engaged with the door opening hub 26 (Figure 1) and causes the door 18 to be opened to allow the film strip within the film cartridge 10 to be advance by operation of the film drive mechanism 40. Figures 8 to 11 are further illustrations of the interaction between the movement of the B-plate 50 and the cartridge door driver lever 106 during the steps of latching the loading chamber 30 into the closed position with certain components of the assembly removed for ease of illustration. For example, the mechanical plate 62 is removed, so that the relation of the drive pin 132 with respect to the vertically extending plate 107 of the cartridge door driver lever actuator 106 may be observed as the B-plate 50 moves upward upon opening of the film loading chamber 30 in Figure 8 and downward on closing and latching as shown in Figures 9 to 11. A pair of guide pins 81, 83 are also shown that fit within a groove in the mechanical plate 62 just above and parallel with the elongated slot 67 to guide the horizontal movement of the cartridge door driver lever actuator 106. Figures 8 to 11 also show the interaction between the B-plate trigger 120 and the B-plate 50 when the cocking lever 64 is in the deployed position of Figure 8 and the closed position of Figures 9 to 11. The B-plate trigger 120 is fitted within an elongated retaining slot 69 (shown in Figure 3) of the mounting plate 62 and retained there between the mounting plate 62 and the vertical extension plate 55 when the plates are assembled to the camera frame 29 as described above. The B-plate trigger 120 can slide back and forth in the retaining slot 69 in the Y-direction without coming out because of its shape with respect to the retaining slot 69. A cam end 121 is formed at one end that fits into the rear cut-out 131 of the vertical extension plate 55 to limit upward travel and lock it in the up and open position of Figures 2 and 8. The B-plate trigger 120 is biased outward in the Y-direction by a compression spring (not shown) acting on a downwardly extending tab of the B-plate trigger 120. Therefore, when the loading chamber is closed, the B-plate trigger 120 is pushed rearward by the cocking lever 64 in the closed position and is allowed to move forward when the cocking lever 64 is deployed into the open position of Figure 2. When the B-plate trigger 120 is pushed rearward by the cocking lever 64 and the cam end 121 is pushed out of the rear cut-out 131, the vertical extension plate 55 is released to move to the engaged position as shown in Figures 9 to 11 under spring tension provided by the B-plate spring 112 and the spring plate spring 110. Figure 8 depicts the above assembly with the film loading chamber (not shown) and the cocking lever 64 moving outward into the deployed position and the B-trigger 120 latched into the cut-out 131 of the upwardly moving B-plate 50 at the final point of upward movement. Upward movement is caused by the spring tension of the spring plate spring 110, which is attached to the mounting plate 62. During the upward movement of the drive pin 132, the cartridge door driver lever actuator 106 is moved rearward in the Y-direction, under the influence of the cartridge door spring 84. The release of spring tension rotates the cartridge door lever driver 80 and the attached cartridge door driver 44 in the counter-clockwise direction (from this point of view) to close the door 18 of the film cartridge. Figure 9 shows the B-plate 50 in the full up position just as the loading chamber (not shown) is pushed into the camera cavity. At that point, the side of the cocking lever 64 bears against the end of the B-plate trigger 120, which is about to fully move out of the cut-out 131. Figure 10 shows the same position with the loading chamber 30 partially depicted in order to show the latch pin 130 poised above the latch slot 102. Referring back to Figure 3, the latch pin 130 extends through the elongated opening 61 in the mechanical mounting plate 62 to make engagement in the latch slot 102 of the mounting plate 92, which is mounted to the side 31 of the film loading chamber 30. The latch pin 130 is shown extending horizontally out from the vertical plate extension 55 just below the horizontal plate extension 59 of B-plate 50, and the B-point locator pin 48 is shown extending downwardly from the horizontal plate extension 59. The line between the B-point locator pin 48 and the drive spindle 45, extending upwardly through the seated end opening 37 defines the A-B axis of alignment of the filmstrip 10 in parallel with the plane of the filmstrip transport path. When the cocking lever 64 is fully in the closed position it moves the B-plate trigger 120 and releases cam end 121 from the cut-out 131. The spring tension of the B-plate spring 112 pulls the B-plate 50 downward, Figure 11, and latches the latch pin 130 firmly into the latch slot 102. The B-point locator pin 48 engages and centers the spool hub 16 of the film cartridge (not shown). At the same time, the drive pin 132 rides down the slanted edge of the vertical extension plate 107 of the cartridge door driver actuator 106 to move it outward in the horizontal Y-direction. During that movement, the cartridge door driver lever 80 is rotated counter-clockwise (in this view and clockwise, as shown in Figure 7) to effect the opening of the cartridge door 18. Turning now to Figures 12 and 13 in conjunction with Figure 2, the loading chamber is shown as deployed from the closed position of Figure 11 to the open position of Figure 8. In Figure 12, the free end pin 126 of the cocking lever 64 is shown in the notch 113 of the spring plate 108, and against the shoulder 57 of the vertical plate extension 55. In Figure 13, the cocking lever 64 is pushed out of the notch 113, allowing the spring plate 108 and to B-plate 50 to rise upward by the tension of the spring plate spring 110, Figure 4. As described above, the cartridge door driver 44 rotates the cartridge door 18 closed. Latch pin 130 is withdrawn from latch slot 102, and B-point locator pin 48 is retracted from the spool hub 16. The B-plate 50 is latched up by the B-plate trigger 120, as shown in and described with reference to Figure 9 to halt upward movement. Then, the cocking lever spring 63 pivots the cocking lever 64 downward and outward from the position of Figure 13, and the loading chamber 30 is deployed to the open position of Figure 2. As described above with respect to Figure 6, if the filmstrip is not fully retracted into the film cartridge 10, but rather contacts the interlock lever 122, then the cocking lever 64 cannot pivot forward, and the loading chamber 30 remains in the position of Figure 13. Figure 14 depicts one manner in which a release lever 134 and a manual slidable latch 136 may be combined into the fixed component group 60 between the spring plate 108 and the camera frame 29 to apply the outward opening force to pin 126. The release lever 134 is pivotally mounted to the stud 66, and a first end 138 may be pivoted outward against the pin 126 as the second end 140 is moved rearward by manipulation of the slidable latch 136 against a spring bias force in a manner well known in the art. The invention may be modified to operate with any particular cartridge configuration or design that may be developed. The component group 60 and wipe-by components 114, 116,118 are illustrated as only one way of seating and ejecting filmstrip cartridge 10 and may be modified to operate with other film cartridge configurations that substitute other mechanisms for the elongated retention slot 20 without affecting the present invention. It will also be understood that the filmstrip drive mechanism may be supported above the plate extension 59 with the drive spindle 45 extending through it in substitution for the B-point locator pin 48, and an A-point locator pin may be located in the seat end of the magazine 34 in substitution for the drive opening 37 shown in Figure 4. The drive spindle 45 and an attached drive gear may be mounted to the upper surface of plate extension 59, and the drive gear mechanism may be engaged and disengaged by a filmstrip advance/rewind drive motor gear mechanism fixed to frame 29 by movement of B-plate 50 between the engaged and extended positions thereof, respectively, as described above. Although the present invention has been described in the context of the preferred embodiment of Figures 2 to 14, it will be understood that it may be applicable to any other deployable film loading chamber and cartridge configuration. The interlock mechanism involving sensing or contacting the filmstrip edge of a conventional edge configuration anywhere along the length of the filmstrip and outside the filmstrip image frame can be implemented in end or side deployable film loading chambers to inhibit any opening motion sufficient to allow light entry. The specific advantageous features of the preferred embodiment in effecting alignment of the filmstrip cartridge and filmstrip to the filmstrip transport path are not necessary to the practice of the present invention. A variety of filmstrip edge sensors and interlock structures may also be substituted for the depicted structures. While there has been shown what are considered to be the preferred embodiments of the invention, it will be manifest that many changes and modifications and substitutions of technically equivalent structure may be made therein without departing from the invention as claimed. It is intended, therefore, in the following claims to cover all such changes and modifications as may fall within the true scope of the invention. For example, rather than blocking the free end of the cocking lever 64 so that the user cannot deploy the film loading chamber 30 as described by the present embodiment when the filmstrip 128 is in the filmstrip transport path 35, the stoppage of the linkage movement can disconnect or disable the cocking lever 64 from the locking mechanism. In this manner, a full motion of the cocking lever 64 will not deploy the film loading chamber 30 when the filmstrip 128 has been sensed.

Claims: A camera (28, 29) for receiving a photographic filmstrip cartridge (10), the camera (28, 29) comprising a body (28) enclosing a camera frame (29) having a film supply cavity (32) and a filmstrip transport path (33, 33', 35), and a film loading chamber (30) for receiving the film cartridge (10) which has a seated end (12) and a free end (11) with end openings through which a spool hub (16) of a filmstrip spool is exposed, deploying means (34,38)) for pivotally moving the film loading chamber (30) between a deployed position for receiving the film cartridge (10) seated end (12) first, into an end opening thereof, and a closed position wherein the film loading chamber (30) is pivoted into the film supply cavity (32) to position the film cartridge (10) in alignment with the filmstrip transport path (33, 33', 35),filmstrip drive means (40) for advancing the filmstrip (128) from the film cartridge (10) into the transport path (33, 33', 35) when the loading chamber (30) is moved to the closed position; characterized in that the camera (28, 29) includes interlock means (64, 122, 123, 124) for sensing the presence of the filmstrip (128) in the filmstrip transport path (33, 33', 35) and for inhibiting pivotal moving of the loading chamber (30) from the closed position to the deployed position by the deploying means (34, 38). A camera according to Claim 1, wherein the interlock means (64, 122, 123, 124) comprises an interlock lever (122) having a first end (123), a second end (124) and a pivotal mounting point positioned in relation to the filmstrip transport path (33, 33', 35) for pivotal movement of the first end (123) into the filmstrip transport path (33, 33', 35) in the absence of a filmstrip (128) therein, and the second end (124) into an interfering engagement with the deploying means (34, 38) for inhibiting deployment of the loading chamber (30) to the deployed position. A camera according to Claim 2, wherein the filmstrip drive means (40) engages the filmstrip spool hub (16) at a first end thereof when the loading chamber (30) is moved to the closed position for advancing the filmstrip (128) from the film cartridge (10, 11, 12, 14, 16, 18, 20, 22, 23, 24, 26) into the filmstrip transport path (33, 33', 35), and into deflecting contact with the first end (123) of the interlock lever (122) to position the second end (124) thereof into interfering engagement with the deploying means (34, 38). A camera according to Claim 3, further including latch means (50, 54, 55, 56, 59) for latching the film loading chamber (30) in the closed position upon pivotal movement thereof into the film supply cavity (32); and means (48) coupled with the latch means (50, 54, 55, 56, 59) for engaging the filmstrip spool hub (16) at the second end (11) thereof to align the filmstrip (128) with respect to the film transport path (33, 33', 35). A camera according to any of Claims 2 to 4, wherein the first end (123) of the interlock lever (122) engages a side edge of the filmstrip (128) outside the image frame area thereof. A camera according to Claim 1, further including latch means (50, 54, 55, 56, 59) for latching the loading chamber (30) in the closed position upon pivotal movement thereof into the film supply cavity (32); and means (48) coupled with the latch means (50, 54, 55, 56, 59) for engaging the filmstrip spool hub (16) at the second end (11) thereof to align the filmstrip (128) with respect to the film transport path (33, 33', 35), wherein the filmstrip drive means (40) engages the filmstrip spool hub (16) at a first end thereof when the loading chamber (30) is moved to the closed position for advancing the filmstrip (128) from the film cartridge (10) into the filmstrip transport path (33, 33', 35) and into contact with the interlock means (64, 122, 123, 124). A camera according to Claim 6, wherein the film cartridge (10) is of the type having a cartridge door (24) movable on a door hub (26) between an open position for advancing the filmstrip (128) onto or from the filmstrip spool and a closed position for enclosing the filmstrip (128) entirely within the cartridge (10) and the camera (28, 29) includes door drive means (44, 45) for engaging the door hub (26) and for opening the cartridge door (24) to allow the filmstrip drive means (40) to advance the filmstrip (128) into the filmstrip transport path (33, 33', 35) upon movement of the film loading chamber (30) into the closed position by the deploying means (34, 38) and to contact the interlock means (64, 122, 123, 124). A camera according to Claim 1, wherein the film cartridge (10, 11, 12, 14, 16, 18, 20, 22, 23, 24, 26) includes a cartridge door (24) movable on a door hub (26) between an open position for advancing filmstrip (128) onto or from the filmstrip spool and a closed position for enclosing the filmstrip (128) entirely within the cartridge (10, 11, 12, 14, 16, 18, 20, 22, 23, 24, 26) and the camera (28, 29) includes door drive means (44, 45) for engaging the door hub (26) and for opening the cartridge door (24) to allow the filmstrip (128) into the filmstrip transport path (33, 33', 35) upon movement of the film loading chamber (30) into the closed position by the deploying means (34, 38) and to contact the interlock means (64, 122, 123, 124). A camera according to any one of Claims 6 to 8, wherein the first end (123) of the interlock lever (122) engages a side edge of the filmstrip (128) outside the image frame area thereof. The camera (28, 29) of Claim 1 wherein said camera has a film door opening (24) extending between the seated end (12) and the free end (11) and pivotal on a door opening hub (26) between a door open and a door closed position, latch means (50, 54, 55, 56, 59) for latching the film loading chamber (30) in the closed position upon pivotal movement thereof into the film supply cavity (32) and for engaging the filmstrip cartridge (10, 11, 12, 14, 16, 18, 20, 22, 23, 24, 26); and said camera (28, 29) is further characterized as having door drive means (44, 45) for engaging the door hub (26) and for opening the cartridge door (24) to allow the filmstrip (128) to be advanced into the film transport patch (33, 33', 35) upon movement of the film loading chamber (30) into the closed position by the deploying means (34, 38); and said interlock means (64, 122, 123, 124) includes means for inhibiting release of the latch means (50, 54, 55, 56, 59) and deployment of the film loading chamber (30) from the closed position to the deployed position by the deploying means (34, 38).

Inventors: FUSS TIMOTHY J, MCGINN DONALD P, RICHIUSO LEONARD, FUSS, TIMOTHY J., MCGINN, DONALD P., RICHIUSO, LEONARD, Fuss, Timothy J., c/o Eastman Kodak Co., MCGINN, DONALD P., C/O EASTMAN KODAK CO., Richiuso, Leonard, c/o Eastman Kodak Co.
Applicants: EASTMAN KODAK CO, EASTMAN KODAK COMPANY
Application year: 1995
Main classification: G03B17
IPC codes: G03B17