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: This invention is directed to a power supplier for use, for example, in a portable camera which includes a battery housing for accommodating a set of cylindrical batteries in parallel relationship with each other, and a battery door which is connected to the battery housing by means of a hinge so as to open an opening of the housing and to close the opening so as to axially depress the batteries. The batteries are located in the battery housing at two positions, i.e. one position relatively close to the hinge and the other position relatively remote from the hinge.

Abstract: An electronic instrument, such as a camera, which is supplied with electric power from a battery and selectively receives two kinds of batteries which are different from each other in shape and output voltage. A battery chamber of the electronic instrument is constructed to commonly receive the first and second batteries such that a space of the battery chamber is commonly occupied by parts of the first and second batteries. Additionally, a member is projected into the battery chamber and determines which kind of batteries is received. In response to the result of the determination, a voltage converting means converts the output voltage of the battery to a given voltage such that an electionic circuit of the electronic instrument operates with the optimum voltage condition with the voltage supplied from either one of the batteries which are different from each other in shape and output voltage.

Abstract: A film wind-up and rewinding motor is connected in series with a resistor so that a voltage commensurate with the motor current appears across the resistor. A level shift circuit shifts the voltage by a given level to generate a voltage signal for switching operation of a transistor. A voltage detecting circuit having a transistor or a bipolar transistor type voltage comparator detects the level of the voltage signal and generates a signal to energize an electromagnet for opening a power switch of the motor when the motor current varies due to forced rotational stopping of the motor or decreased load rotation of the motor causing the voltage signal to rise or drop to a given level.

Abstract: A motor driven film wind-up and rewind device for cameras is automatically switched from a film wind-up mode to a film rewind mode when the entire length of an unexposed film has been wound on a film take-up spool and surely remains in the film rewind mode thereafter. For the automatic switching of the modes a circuit detects increase in a motor current which occurs with a motor forced to stop after completion of the film wind-up. A movable member which is in the form of an through axle extending through a film rewinding sprocket moves from a first position to a second position immediately after initiation of the motor rotation for the film rewind, switching a switch to a state maintaining the device in the film rewind mode as well as connecting the sprocket with the motor. The movable member is returned to the first position in response to insertion of a film cartridge into a cartridge chamber of the camera and restrained at the first position till the initiation of the film rewind.

Abstract: An autoloading apparatus comprising a take-up spool for winding a film thereon, a film transport member for transporting the film to the take-up spool, a motor for driving the spool and the transport member, a first detecting member for energizing the motor to start automatic film transport upon detecting the insertion of the film into a film inlet, and a second detecting member for de-energizing the motor to stop the transport upon detecting that the film has been wound on the spool. The apparatus enables the user to close the camera back after recognizing that the film has been properly wound on the spool and reduces the amount of film to be wasted for loading.