Abstract: Disclosed herein is a light measuring and control data calculating device for use in a photographic enlarger. The device comprises first light detecting means for detecting the amount of light emitted from a light source, second light detecting means for detecting the emitted light amount at a position on the surface of an easel through the optical system and an original film in the enlarger, setting means for manually setting a preliminary desired amount of light to be emitted from the light source and calculation means for calculating an actually desired amount of flash light to be emitted from the light source for obtaining a desired total amount of the exposure light on the surface of the easel for making a suitable exposure on the printing paper to provide a best print.

Abstract: This device provides a portable foldable cart that can be used for photographing flat art objects. It comprises a first frame 3 with a support structure 43 provided to support the object to be reproduced, a second frame 2 provided to support the camera and an connecting structure 1 comprising of a number interconnected lazy tongs. The supporting structure 43 has a second set of lazy tongs so that it can be adapted to different sized objects.Thus the device can be adapted for a large variety of objects and conditions. It can also be folded up in a small package for storing or transportation.

Abstract: A focal-plane shutter comprises first leading and trailing cylinders rotatably disposed on the winding side and fitted with leading and trailing screens, respectively, second leading and trailing cylinders rotatably disposed on the charge side and fitted with the leading and trailing screens, respectively, gears for rotating the first leading and trailing cylinders so that the first leading and trailing cylinders are wound with the leading and trailing screens, respectively, and charge springs for rotating the second leading and trailing cylinders at shutter release so that the second leading and trailing cylinders are wound with the leading and trailing screens, respectively. The first and second leading cylinders are substantially coaxial with said first and second trailing cylinders, respectively.

Abstract: A frame assembly for an electric motor stator is described. The frame includes at least three arcuate units for encircling a wound core of an electric motor stator. The assembly further includes a means for interlockingly engaging the arcuate units so that the units may be maintained about the stator prior to welding. The interlocking means extends from at least one end of each arcuate unit. The interlocking means may include an overlapping portion extending arcuately outward from one end of an arcuate unit and an underlapping portion similarly extending from an adjacent arcuate unit so that the overlapping and underlapping portions may interlockingly engage with one another during assembly.

Abstract: A connector electrically connects, an electric circuit in an interchangeable lens with an electric circuit in a camera body. The connector includes plural contacts provided on the interchangeable lens and the corresponding plural contacts provided on the camera body.Power supplying contacts in the plural contacts on the camera body are activated only after the interchangeable lens has been completely or mounted on the camera body.

Abstract: An instant camera in which a self-processing type film unit is passed between a pair of spreading rollers and ejected to the exterior of the camera while a container means containing a development processing solution in the film unit is torn by the nipping force of the rollers causing said processing solution to be spread over an image forming region in said film unit, characterized by the spreading rollers being formed such that the clearance therebetween is greater at the center section thereof and smaller near the roller ends which contact the edges of said image forming region.

Abstract: A self-processing type film unit for an instant camera having a pair of flexible sheets sandwiching a photosensitive layer forming an image forming area at the intermediate portion of the film unit is provided with a developing solution container at its leading end portion and a solution trapping member for trapping excess solution at its trailing end. Several film units are stacked in a package and put into the instant camera. The camera discharges the film units from the package one by one after exposure to light and then feeds them in between a pair of spreading rollers. The rollers rotate with the film unit pinched between them to discharge it outside the camera. When the film unit is passed between the rollers, the developing solution container is broken by the nipping force of the rollers to release the solution contained therein. The released solution is distributed over the image forming area to develop the image on the spot, pushed by the rollers.

Abstract: In a camera having a moving body provided with an optical element which is movable over a predetermined distance in a predetermined direction in connection with a photographing operation, a shock absorbing device acting on a shock resulting from the movement of the moving body includes counterweight means having a greater inertial mass than the moving body, and drive means for moving the counterweight means and the moving body in synchronism with each other. The drive means moves the counterweight means in the direction opposite to the direction of movement of the moving bdy and over a distance shorter than the movement distance of the center of gravity of the moving body.

Abstract: A film magazine receiving chamber forming member is provided in a camera body for forming a film magazine receiving chamber which opens toward the bottom face of the body and is shaped to permit insertion of a film magazine thereinto only in one axial direction of the magazine through the opening. The camera is further provided with a film leader guiding means for guiding the film leader of the magazine to extend in a suitable direction when the magazine is inserted into the film magazine receiving chamber, and a film leader cutting means disposed on the side of the film aperture opposite to the film magazine receiving chamber.

Abstract: A photographic camera is provided with a magazine receiving chamber formed in the camera body and shaped to permit insertion of a film magazine having a film leader into the chamber only in one axial direction of the magazine, and inner and outer guide member for guiding the film leader in between the film aperture and a film pressure plate as the magazine is inserted into the chamber. The film pressure plate is resiliently mounted on the camera body to be movable toward and away from the film aperture. A pressure plate pushing member is mounted on the back lid of the camera body to push the pressure plate toward the film aperture when the back lid is closed. When the back lid is opened, the pressure plate returns to its rest position in which its inner surface is flush with the inner surface of the outer guide member and provides a planar guiding surface.

Abstract: A lens protection cover is contained within a barrel ahead of the objective lens, and opening and closing of this lens protection cover is performed by an actuator operable along the periphery of the lens barrel, whereby it is possible not only to protect the objective lens when not in use, but also to permit camera operation to be controlled by the open and closed positions of the lens projection cover so that faulty operation is prevented.

Abstract: An interchangeable lens is provided with a plurality of contacts arranged in recesses and engaged with one side of a lever actuated when the lens is mounted to a camera. Upon mounting, the contacts protrude beyond the end of the lens into recesses in the camera body to make contact with a further set of electrical contacts arranged therein.

Abstract: A device for electrically connecting a lens barrel and a camera body includes a connector provided integrally with the fixed cylinder of the lens barrel along the cylindrical surface of the fixed cylinder. The connector has a movable contact resiliently displaceable in the diametral direction of the cylinder. The movable contact is urged against a contact piece provided on the camera body upon completion of the mounting of the lens barrel to the camera body. The camera body is provided with an inclined surface for displacing the movable contact in the diametral direction against the resilient force during the mounting operation of the lens barrel to the camera body.

Abstract: A focus adjusting device of a camera has moving means for moving a phototaking lens in the direction of the optical axis thereof, a motor producing a revolution output, a manually operated ring provided on the outer periphery of a lens barrel and rotatable circumferentially of the lens barrel, mode selecting means for selecting one of a manual mode in which the phototaking lens is driven by the manually operated ring and an automatic mode in which the phototaking lens is driven by the motor, and clutch means for coupling the moving means and the manually operated ring together when the manual mode has been selected by the mode selecting means and for cutting off the coupling between the moving means and the manually operated ring when the automatic mode has been selected by the mode selecting means.

Abstract: A device for releasing shutter hold particularly for a single lens reflex camera including a shutter hold release device having a release mechanism for releasing the shutter hold wherein the driving power for the release mechanism is charged into the release mechanism in operative engagement of the charge of mirror driving power in a mirror driving mechanism of the device.

Abstract: In a camera adapted to receive a disc-shaped magazine and including a housing with front and rear walls having a lens window exposed on the front wall near one side margin of the housing and front and rear viewfinder windows exposed on the front and rear walls on the same side of the housing as the lens window, a hollow handle is provided having spaced front and rear walls defining therebetween an open housing side-receiving recess. The handle is much narrower than the width of the housing so as to fit over only the side of the housing containing the lens and viewfinder windows.

Abstract: A disc camera advances a film disc by an oscillating pawl engaging the disc film notches previously used for indexing. The pawl is carried on a member pivotably mounted on the side of the rear film chamber wall remote from the chamber and passing through an opening in this wall. The limits of movement of this member are determined by the height of a lobe of a rotating cam driving the pawl system and by other mechanical limit stops. An end-of-film sensing pin is provided which passes through the rear film chamber wall of the camera and engages the face of the film disc hub directly. When the pin drops into the film disc hub, the film advance motor circuit is rendered inoperative. A single printed circuit board placed near and parallel to the side of the film chamber wall remote from the film chamber carries the DC motor, shutter-cocking and the pawl-oscillating mechanism. The pawl carrying member is pivoted on this wall.

Abstract: A camera capable of changing over between electromagnetic release and mechanical release and to which a motor drive unit is attachable, whereby when in the mechanical release position the use of the motor drive unit permits an automatic winding operation to be initiated in response to return of the release button after the exposure has been completed.

Abstract: A cassette with two chambers for discrete cut films has a centrally disposed plate-like partition with two identical sides, and a pair of identical covers each of which is adjacent to a different side of the partition and is pivotably attached to the partition by a hinge for movement between an open and a closed position. The covers have exposure apertures and carry slidable plate-like shutters which can slide in slots of the respective covers to permit or prevent entry of light by way of the respective apertures. The film chambers are separated from each other by the central portion of the partition, and the latter further carries locks for releasably holding the covers in their closed positions. The lock for one of the covers is provided at that side of the partition which is adjacent to the other cover, and vice versa.

Abstract: A photographic film cartridge assembly has front and rear opposed walls between which photographic film is movable to align image areas with an exposure window in the front wall. A film support surface is enterable into the cartridge assembly through the exposure window. An opening in the rear wall is aligned with the exposure window, and a pressure plate is retained on the rear wall for movement toward and away from the front wall. Baffle means on the pressure plate and the rear wall form a tortuous light path to prevent light entering the cartridge assembly through the opening from reaching the film.