Abstract: An electronic circuitry for a photographic camera including functioning circuits for carrying out various functions of the camera, an electronic flash circuit having at least a voltage boosting circuit and a capacitor which charges the output of the voltage boosting circuit for flash, a control circuit for outputting control signals to the functioning circuits and to the electronic flash circuit and a battery for supplying power to the functioning circuits, the electronic flash circuit and the control circuit. In order to prevent erroneous functions of the functioning circuits caused by noise, the control circuit inhibits the output of the control signals to the functioning circuits while the capacitor for the flashing included in the electronic flash circuit is being charged.

Abstract: A camera having a photographic optical system, a lens barrel disposed to be movable relative to a camera body in a direction of an optical axis and holding the photographic optical system, a focal length switchover mechanism for moving the photographic optical system such that the photographic optical system has a longer focal length as the same is moved forwardly in the direction of the optical axis, and a lens barrier displaceable between a closed position and an opened position for covering and uncovering a front face of the lens barrel. This lens barrier is disposed independently of the lens barrel adjacent a front end of the lens barrel having returned to a home position thereof at the side of the camera body such that the lens barrier is not movable in unison with the lens barrel.

Abstract: A bulky and reinforced non-woven fabric and a process for producing the fabric are provided, which fabric is composed of a web consisting of 30-100% by weight of hot-melt-adhesive fibers and 70-0% by weight of fibers having a m.p. higher than that of the hot-melt-adhesive component of the hot-melt-adhesive fibers and monofilaments, fibers constituting the web being adhered onto one another and also to the monofilaments and the fabric having wrinkles at a wavelength of 0.1 to 20 mm over the whole surface of the fabric; and which process comprises arranging monofilaments of a percentage of shrinkage of 20% or higher under heat treatment conditions for melt-adhering the hot-melt-adhesive fibers over the whole surface of the web; adhering the fibers constituting the web onto one another and also to the monofilaments through hot-melt-adhesion; and also causing the web to shrink through shrinkage generated in the monofilaments.

Abstract: A camera including a lens cover and provided with a plurality of picture taking modes. The camera has the capability for outputting a signal representing that the lens cover is open or closed, for selecting one of the plurality of picture taking modes and for sending a photographic film. The camera has a first display portion for displaying the picture taking mode selected and a second display portion for displaying information of the photographic film loaded in the camera. The operation of the camera is controlled according to the picture taking mode selected and such control of the operation of the camera is inhibited while a signal is output representing that the lens cover is closed. While a signal is output representing that the lens cover is open, the first display portion displays the picture taking mode selected; and while a signal is output representing that the lens cover is closed the first display portion is inhibited from displaying the picture taking mode selected.

Abstract: An electronic circuitry for a photographic camera including functioning circuits for carrying out various functions of the camera, an electronic flash circuit having at least a voltage boosting circuit and a capacitor which charges the output of the voltage boosting circuit for flash, a control circuit for outputting control signals to the functioning circuits and to the electronic flash circuit and a battery for supplying power to the functioning circuits, the electronic flash circuit and the control circuit. In order to prevent erroneous functions of the functioning circuits caused by noise, the control circuit inhibits the output of the control signals to the functioning circuits while the capacitor for the flashing included in the electronic flash circuit is being charged.

Abstract: A camera system is capable of operating in a number of different photographic modes and includes a display system which provides information relevant to each of the modes. The camera system also includes an automatic film rewinding mechanism that has two modes of operation. In a first, automatic, mode, the tensioning of the film during winding is detected to indicate the end of the roll of film. Upon such detection, the film is automatically and fully rewound into the film cartridge. In a second, user selectable, mode a signal is manually provided by the user to initiate film rewinding. Rewinding of the film is stopped just prior to the time the end of the film enters the cartridge, so that a portion of the film leader remains extended outside of the cartridge.

Abstract: A mode selecting device for use in a camera provided with the various picture taking modes including standard picture taking mode, self-timer picture taking mode, flash light picture taking mode, close picture taking mode, fill in flash mode, nonflash mode and consecutive picture taking mode. A mode setting button is operable to select the mode and a memory is provided to store data corresponding to the selected mode. Also disclosed is a brightness measuring circuit and an automatic exposure control circuit. A flash is enabled or disabled in accordance with the mode selected and the measured brightness value. The camera is automatically reset to the most frequently used mode for emitting the flash light automatically under low light condition after a exposure has been completed, or a given time after the exposure has been completed.

Abstract: A mode selecting device for use in a camera provided with various picture taking modes including a normal picture taking mode, having a mode selecting device which is able to return to the normal picture taking mode from various kinds of camera modes automatically. The device further including a component for selecting a first mode in which the camera operates to take picture consecutively and a second mode in which the camera operates to take only one picture at a time, a mechanism for preliminary winding up of a film by a predetermined length in response to the closure of the back lid of the camera, the film lying in the normal frame position when the preliminary winding is terminated and components for forcibly selecting the second mode before the preliminary winding is terminated.

Abstract: A photographic camera in which a lens adjustable in two positions is focused automatically on subjects located within "near" and "far" distance range from the camera. The lens is normally positioned in one of the two positions and movable to the other of the two positions in response to a signal generated by an automatic focusing device upon the detection of the subject location in the focus range to which the other position corresponds, wherein it is characterized that the movement of the lens is automatically controlled by an electromagnetic device.

Abstract: A film winding-up system for a photographic camera including a film detection switch, a one-frame film winding-up device, a detection switch for detecting completion of an operation of the one-frame film winding-up device, a film advance detection switch for detecting whether a film is properly wound-up or not, a display device having a film frame counter and a control device connected to the film detection switch, the one-frame film winding-up device, the one-frame film winding-up completion detection switch, the film advance detection switch and to the film frame counter.

Abstract: The present invention relates to a battery compartment capable of selectively accommodating an integrated battery unit and a plurality of cylindrical batteries. This battery compartment comprises a housing adapted to fit the integrated battery unit and a support member which is pivotably placed about a support portion provided to a side interior wall of the housing between a supporting position substantially perpendicular to the side interior wall to laterally support the plurality of cylindrical batteries and a recessed position along the side interior wall to be recessed from an accommodating space for the integrated battery unit. This support member is always urged toward the supporting position and a loading of the integrated battery unit is carried out in such a manner that the support member is displaced to the recessed position against a resilience of the support member toward the supporting position.

Abstract: The motor drive device according to the present invention drives a motor until a hold signal disappears and the motor is braked when the holding signal disappears. After a predetermined period from the time when the holding signal disappears, it is detected whether or not a completion position signal representing that the load has reached the normal complete position is output. If the completion position signal is not output, the motor is started again. The load is driven until the load reaches the position where the completion position signal is output, and then the motor is braked. Thus the load can be stopped at the correct position. Also, with the motor drive device according to the present invention, the motor may be braked after the load is driven by a predetermined amount. After a predetermined period has passed therefrom, it is detected whether or not a signal representing that the load is normally driven is output, and if the signal is not ouput, the motor is started again.

Abstract: A mode selecting device for use in a camera having at least two modes, namely, a consecutive picture taking mode and a single picture taking mode. In the consecutive picture taking mode, the camera operates to take pictures consecutively so long as the exposure release button is depressed. In the single picture taking mode, the camera operates to take a single picture no matter how long the release button is continuously depressed. The selected mode is displayed on a display. The camera returns to the single picture taking mode when the back lid is opened, when the back lid is closed, when the film is rewound, or when the film undergoes preliminary winding so that the camera is not inadvertently left in the consecutive picture taking mode.

Abstract: A dental resin composition comprising (a) a siloxane polymer obtained by polymerizing an oligomer comprising (I) a silane compound containing therein an ethyleneically unsaturated group having bonded thereto (II) a silane compound containing therein a phenyl group or an alkyl group, (b) a monomer copolymerizable with said siloxane polymer (a), and (c) a polymerization catalyst, and optionally, (d) a filler, is disclosed. The dental resin composition of the invention is markedly improved in physical properties such as compressive strength, bending strength, abrasion resistance, and water sorption and therefore, it is quite useful as a denture base resin, a crown and bridge resin, and a filling resin in the dentistry.

Abstract: A camera with a flash device that includes a manually operable member. The camera has a capability for controlling exposure, for detecting a completion of charge of the flash device, and for counting a lapse of time from the operation of the manually operable member. The camera also has the capability to allow the control of exposure when the completion of charge is detected, and for forbidding the control of exposure when a predetermined time is counted without the detecting of the completion of charge.

Abstract: An electronic circuitry for a photographic camera including functioning circuits for carrying out various functions of the camera, an electronic flash circuit having at least a voltage boosting circuit and a capacitor which charges the output of the voltage boosting circuit for flash, a control circuit for outputting control signals to the functioning circuits and to the electronic flash circuit and a battery for supplying power to the functioning circuits, the electronic flash circuit and the control circuit. In order to prevent erroneous functions of the functioning circuits caused by noise, the control circuit inhibits the output of the control signals to the functioning circuits while the capacitor for the flashing included in the electronic flash circuit is being charged.

Abstract: A camera having a lens cover is provided, at its one end portion, with a projecting portion which assists gripping of the camera. The lens cover is laterally slided to cover and uncover a front surface of an objective lens and is provided, on its front surface, with a recess to be engaged with fingers of a hand which grips the camera. The lens cover is operated by the fingers of the hand gripping the camera to move between an uncovering position where the lens cover is positioned adjacent to the projecting portion and a covering position where the lens cover is positioned apart from the projecting portion. The projecting portion in combination with a part of the lens cover located between an edge adjacent to the projecting portion and the recess constitutes a grip portion to be gripped for holding the camera.

Abstract: A camera including an objective lens device whose focal length is manually changeable, is automatically switched from a natural light photography mode to a flash photography mode when a low brightness condition detecting means generates a low brightness signal upon detection of a low brightness condition. A control means causes the detecting means to generate the signal at different brightness conditions in accordance with the change in the focal length of the objective lens device so that the automatic switching of the camera to the flash photography mode is effected with a higher brightness condition in the case of a longer focal length.

Abstract: A linear tracking tone arm having a stylus is pivotably mounted on a carriage slidably movable along a guide rod and has a hook extending in operative engagement with a pin on a swing arm slidably movable with the carriage along the guide rod. The guide rod is angularly movable about its own axis to turn the swing arm for lifting or lowering the linear tracking tone arm. A mechanism for turning the guide rod includes a solenoid, a plunger actuatable thereby, a cam pivotably movable by the plunger, and a rotation control arm coupled with the guide rod and held in engagement with the cam. The carriage supports thereon a guide frame for guiding a pin extending from the tone arm to cancel a tracking error when the stylus is led into the lead-out groove on a record disc.

Abstract: A camera film easy loading takeup spool includes a body member rotatable about a longitudinal axis past a film delivery position and a plurality of peripherally spaced pairs of longitudinal jaw members, one of each of which is swingable about a longitudinal axis between film entry opening open and closed positions relative to the respective other jaw member and spring biased to its open position and including a depending follower engaging a circular cam which closes the jaws offset from the film delivery position and permits the spring opening of the jaw proximate the film delivery position. A film perforation engaging tooth or a friction pad is carried by one of each pair of jaws and the inner ends of the jaws delineate an inner passageway of a width equal to about the film thickness. A visual indicator is actuated when any one of the jaw members is open.