Nippon Kogaku K.k.

Shiro Sugimori

Tetsuro Goto

Koichi Daitoku

Kenji Toyoda

Nobuo Matsukawa

Kenji Sekine

Sumiko Maruyama

In a camera having a film transport mechanism for advancing and rewinding film and a counter for counting the number of frames of film advanced, a first control device operatively coupled to the counter controls the transport mechanism so as to prevent further film advancement upon the counter reaching a predetermined count. Upon the transport mechanism being operated to rewind the film, a second control device automatically disables the first control device so as to enable further film advancement by the transport mechanism.

Apparatus for controlling film advancement in a camera

A speed-light, or electronic flash, having a support column provided between its light flashing part and its fitting member to be fitted with an accessory shoe of a camera body, wherein an exposure calculator device operable by a guide number is in cylindrical form so as to surround or enclose the support column.

Electronic flash with calculator

A motor drive device for a camera comprises a film advance shaft for advancing film with the aid of the drive from a motor. A rotary shaft has a connecting portion and is effective to transmit the rotation to the film advance shaft, and a drive plate is rotatably mounted on the rotary shaft and is rotatable by the drive motor. A movable plate is rotatably mounted on the rotary shaft, a bias member biases both the movable plate and the drive plate so as to rotate them together and a coupling member formed with a coupling portion is capable of being coupled to the connecting portion, the coupling member being pivotally mounted on the movable plate for displacement between a coupled position and a non-coupled position. Change-over means are arranged for changing over the coupling member from the non-coupled position to the coupled position when the change-over means lies in the orbit of the coupling member, and a release is provided on the drive plate so as to pivotally move the coupling member to the non-coupled position against the bias of the bias member when the coupling member is in the coupled position by the displacement of the relative position between the drive plate and the movable plate which results from an increased film advance load after completion of film advance.

Motor drive device for camera

This invention provides a safety device for automatic exposure control camera having motor drive equipment, which includes a phototaking switch externally manually operable for energizing the motor drive equipment when the switch is closed, an auxiliary switching device connected in series with the phototaking switch, a main switching device for actuating the exposure control circuit when the main switching device becomes conductive, and means for interlocking the main switching device and the auxiliary switching device for closing these switching devices substantially simultaneously.

Growing community of inventors

Kawasaki, Japan

Shiro Sugimori