Polaroid Corporation

Joseph H Wright

Joseph A Stella

Frank M Czumak

John B Morse

Donald J Sulesky

A photographic processing liquid applicator having a reservoir for containing a supply of alkaline processing liquid. The upper portion of the reservoir has an egress while a lower portion of the reservoir is provided with an ingress which is in communication with a container of processing liquid. Rotatably mounted within the reservoir is a roller for applying a coating of the processing liquid to a length of sheet material. During each coating operation, a supply of processing liquid greater than that required to coat the sheet material is added to the liquid already in the reservoir, via the ingress, thus causing its level to rise above the egress. Processing liquid is thus skimmed or drained from the surface of the liquid, which liquid would have been most exposed to the adverse affects of the oxygen in the atmosphere.

Self purging processing liquid applicator

Apparatus, e.g., a camera back, for locating a film cassette containing a plurality of individual, pre-mounted transparency film frames of the self-developing type in position for exposure. The apparatus includes a lighttight chamber into which the film frames are moved subsequent to their exposure. After the exposure of one or more of the film frames, the apparatus may be coupled to a film processor wherein the exposed film frames are individually removed from the lighttight chamber, processed, and delivered to the operator. The apparatus also includes a film advancing member which automatically removes a dark slide from the film cassette as it is being loaded into the apparatus.

Camera back

Apparatus for processing photographically exposed premounted transparency frames so as to produce visible images in the frames. The apparatus includes a laminating station at which a section of sheet material having a coating of processing liquid thereon is laminated to an exposed premounted transparency frame of the self-developing type. The sheet material including the resulting laminate is then advanced toward a stripping station where, after the image has been developed, the coated section of the sheet material is stripped from the frame as the latter is simultaneously directed to a station whereat it may be recovered by the operator of the apparatus. The apparatus also provides for rewinding uncoated sheet material upon a supply reel after each processing operation thus minimizing the amount of sheet material used in the processing of the premounted transparency frames.

Film processor for premounted transparency frames

A mount for supporting a section of unexposed self-developing film. The mount comprises a substantially rigid member having leading and trailing ends, and an aperture extending between a rear surface, to which the film is to be secured, and a front surface. The aperture is defined in part by first and second surfaces which are (1) parallel with the leading and trailing ends, and (2) inclined outwardly from each other as each surface extends from the rear surface to the front surface. The inclined surfaces facilitate the entry of a laminating roller into and out of the aperture during a film processing cycle and maximize its contact with the film. The rigid member also includes slots in its leading and trailing ends which cooperate with a laminating roller assembly in a processor to assist in the movement of one of the rollers between laminating and non-laminating positions.

Mount for transparency film frame

A photographic film assemblage including a plurality of film units and a dark slide supported in a stack within a film cassette such that the dark slide prevents premature exposure of an adjacent film unit in the stack to ambient light during loading of the assemblage into a camera. The film cassette includes an ingress which is adapted to receive a film advancing member during loading of the assemblage into the camera. As the assemblage enters the camera, the film advancing member progressively and simultaneously moves the dark slide out of the film cassette via an egress therein. The film cassette includes means cooperable with the camera for preventing premature withdrawal of the assemblage during such loading.

Photographic film assemblage

Photographic apparatus including a miniature camera for exposing, processing and viewing small format positive image transparencies. A film cassette carries a plurality of film units of a type in which each unit includes a self-contained pod of processing fluid. After exposure of a given film unit, that unit is moved from an exposure position, past a spreader bar to spread processing fluid over the exposed area of the film unit and to a viewing position in which the processed film unit is presented in a camera window through which it may be examined by light passing through the camera window and the film unit.

Disc camera

An audio-visual cassette system is provided employing a photographic film strip and an audio tape interwound on a common supply spool and adapted to be advanced along different paths from the supply spool to a takeup spool. The cassette is of the type in which the film strip may be exposed, processed and projected for viewing without removal from the cassette. The film strip is provided with an aperture in the supply spool leader which cooperates with a processor actuating pull strip to initiate processing of the film upon film advancement. The audio tape is coupled to the film strip at the supply spool end at a location with respect to the aperture such that the film strip pulls the tape away from the aperture region of the film during engagement of the pull strip with the aperture.

Film strip/audio tape arrangement for audio-visual cassette

A thin dark chamber or light shielding adapter that is configured to be slidably inserted through a narrow film exit slot in a self-developing camera for receiving and light shielding self-developing film units of the type requiring a short imbibition period in a light-free environment subsequent to the distribution of a processing composition between predetermined layers of the film unit.

Film unit light shielding adapter for photographic apparatus

A photographic film cassette including a drive transmission arrangement configured for operating a film capstan and for selectively driving supply and take-up reels of the cassette responsive to projector driving operation. The cassette is a large capacity film cassette for use with automatic projector apparatus of the type having a cassette-receiving well smaller than the space occupied by take-up and supply reels of the large capacity cassette and is provided with a tongue-like housing portion receivable in the cassette well of the projection apparatus. Contained within the cassette is reversible drive transmission by which drive spindles in the cassette well are coupled to both an isolating capstan and the film reels to effect advancing movement of the film strip from the supply reel to the take-up reel during projection and rewinding movement of the film strip back to the supply reel after projection.

Growing community of inventors

Marblehead, MA, United States of America

Joseph H Wright