Abstract: A film metering pawl suitable for use with a motorized film drive has a perforation sensing tooth with a sloping leading edge that allows the tooth to be cammed out of each perforation by the perforation leading edge during prewind/rewind. The pawl also has an integral ramp which cooperates with a fixed pin to be lifted out of each perforation during frame-to-frame film advance beyond registration positions between exposures, without the necessity for mechanical connection to the camera exposure system. An infrared sensor monitors pawl position for motor drive/synchronization purposes.

Abstract: A film metering mechanism has parallel pawl and blade elements with apertures that align in the beam of an infrared detector to slow down a camera drive motor when a pawl tooth senses a perforation during film advance, prior to reaching a drive motor stopping point. The pawl has a cutout with upper longitudinal and ramp surfaces that engage a fixed pin. The blade has a stepped surface that shifts contact between two pawl pins in correspondence with the relative location of the cutout surfaces and the fixed pin.

Abstract: Magnetic recording apparatus for a photographic still camera comprises a magnetic head mounted on a flexure attached to a film platen. The head is adapted to contact a magnetic coating on the film adjacent the lip opening of a film cartridge where the film has residual stiffness. The flexure permits the head to move about three axis to permit vertical, pitch and roll displacements of the head which compensate for transient disturbances on the film.

Abstract: An electromagnetic control device for a camera or the like is provided with a magnet core having an attracting face and with an armature pivotally connected to a control member for movement about a pivot axis to allow tilting of an attracted face of the armature into intimate face contact with the attracting face of the magnet core. The control member is pivotally mounted for movement about a pivot axis, to swing the armature to urge its attracted face against the attracting face of the magnet core, until the attracted face is tilted into intimate face contact with the attracting face. A degree of free play exists at the pivotal mounting of the control member to allow the control member to move about the pivot axis of the armature after the attracted face of the armature is tilted into face contact with the attracting face of the magnet core.