Fuji Photo Film Company, Limited

Fuji Photo Optical Co., Ltd.

Tokyo Shibaura Denki Kabushiki Kaisha

Naoki Kobayashi

Motohiko Horio

Kouji Kaneko

Hidemi Sasaki

Fujio Okada

Kiyotaka Kaneko

Hideo Kobayashi

Akira Muramatsu

Mitsuo Soumi

Seiichi Yanagida

A battery holding device disposed in a battery case in a main body of a camera. In the battery holding device, there is provided a slidable and rotatable battery cover in a battery insertion opening in the battery case. The battery cover can remove the engagement of a battery by an engagement member in a position where the insertion opening is closed and also can open the battery insertion opening in a rotatable position.

Battery holding device

In a head carriage guiding mechanism for guiding a carriage carrying a magnetic head along a guide shaft thereby positioning the magnetic head in the radial direction of a magnetic sheet contained in a magnetic sheet pack, the guide shaft extends slidably through a chassis and is secured at one end thereof to the carriage so as to facilitate replacement of the carriage and improve the head positioning accuracy.

Mechanism for guiding head carriage

A rotary magnetic disc device suitable for use in a magnetic recording/reproducing apparatus in an electronic still camera or the like. In the rotary magnetic disc device, there are provided three height positioning pins which are used to set a regulation plate at a predetermnined recording/reproducing position opposite to a magnetic head with a magnetic disc therebetween, and two of the height positioning pins are located in the neighborhood of an axis of rotation of a cover on which a regulation plate holder is resiliently supported, the positioning pins being located at a predetermined distance from each other. The improved arrangement of the positioning pins contributes to reduction of not only the size of the regulation plate holder but also an operation force necessary to operate the cover when closing it.

Rotary magnetic disc device with improved disc pack positioning structure

A rotary magnetic disc device suitable for use in a magnetic recording/reproducing apparatus in an electronic still camera or the like. In the rotary magnetic disc device, a cover lock mechanism, a regulation plate drive mechanism and a center core push drive mechanism can be operated by use of a movable plate the movement of which can be controlled by a cam and, therefore, an operation to remove the locking of a cover, an operation to retreat a regulation plate and an operation to remove the pushing against a center core can be performed by a single drive source, so that a compact rotary magnetic disc device can be obtained.

Compact rotary magnetic disc device having a magnetic disc holder

A rotary magnetic disc device for use in an electronic still camera or the like employing a magnetic disc pack which comprises a main body, a pack holder for storing the magnetic disc pack therein and a cover disposed outside of the pack holder, the pack holder and the cover being respectively mounted to the device main body such that they can be opened or closed freely. Engagement means is provided in the tip end portion of an erect member adapted to extend through an opening in the magnetic disc pack to be stored in the pack holder when the pack holder is closed and, on the other hand, a lock member engageable with the engagement means is provided on the lower surface of the cover, so that the cover can be locked by means of the engagement means of the erect member and the lock member in the cover.

Rotary magnetic disc device having a compact locking device

An electronic camera includes an electronic camera unit for generating a still image signal, an encoder for converting the still image signal from the electronic camera unit into a television signal and for issuing the television signal through an output terminal to a video recorder, and an electronic viewfinder for displaying the television signal as a visible image. The encoder and the electronic viewfinder are contained in an adapter detachably connected to the electronic camera unit. The television signal from the encoder is applied directly to a video circuit in the video viewfinder, and also delivered through a connector or a coupling terminal to the video recorder.

Electronic camera

A magnetic head device comprises a first sheet retainer member which is adapted to be brought into contact with a magnetic recording sheet at a first position on one side of the magnetic recording sheet, a second sheet retainer member having a contact surface which is adapted to be brought into contact with the magnetic recording sheet at a second position near the first position on the other side of the magnetic recording sheet, and a magnetic head accommodated in an opening formed in the contact surface of the second sheet retainer member to be brought into contact with the magnetic recording sheet.

Mechanism for retaining a flexible magnetic sheet in position for

An image pickup apparatus using an image sensor is provided with a rotary shutter that controls the amount of time the image-forming light strikes the image sensor. A synchronism detector is provided to detect the phase difference between the rotation of the rotary shutter and the scanning of the image sensor by comparing the phase signals produced according to the speed of rotation of the rotary shutter and vertical synchronizing signals periodically produced as well as scanning signals for scanning the image sensor. When there is no phase difference between the two signals, the synchronism detector provides an operation signal which causes a switching circuit to be conductive, so as to permit an image recorder to record images. On the other hand, if there is a phase difference, the synchronism detector provides no operation signal and the switching circuit is rendered non-conductive so as to prevent the image recorder from recording images.

Image pickup apparatus with a rotary shutter

A magnetic head feed device for feeding a magnetic head for recording information on a magnetic recording disk and/or reproducing information from the magnetic recording disk in a radial direction of the magnetic recording disk includes a driving force source which outputs a driving force for feeding the magnetic head as a rotational motion thereof, a rotational motion-linear motion converting mechanism for converting the rotational motion of the driving force source into a linear motion of the magnetic head. The rotational motion-linear motion converting mechanism includes a spur gear to be rotated upon rotation of the driving force source, a shaft portion which is coaxially connected to the spur gear to be rotated together therewith and is provided with an enlarged diameter portion having a male thread portion formed on the outer surface thereof, a female screw unit having an elongated passage through which the shaft portion extends and which is longer than the enlarged diameter portion of the shaft portion, the female screw unit being fixedly mounted and provided with a female thread portion into which the male thread portion of the shaft portion is screwed, and a pair of lid members which are mounted on the respective ends of the passage to close the passage and are provided with circular central openings through which the shaft portion extends into the passage and projects therefrom so that the enlarged diameter portion is positioned between the lid members.

Magnetic head feed mechanism including a dust preventing means

A rotary shutter adapted to be used in an electronic still camera comprises a rotatable shutter having shutter openings which are variable in size. The shutter is rotated by an electric motor in order to open and close intermittently an exposure aperture of the camera. A phase detector for detecting the phase of rotation of the shutter member provides a series of phase signal, and cooperates with a signal generator for generating stop signals in synchronism with the phase signals when a particular shutter speed is selected and a circuit for braking the motor to stop the shutter member. Responsive to the particular shutter speed selecting operation, the shutter opening is opened to its maximum size and the rotary shutter is simultaneously stopped quickly in position so as to open fully the exposure aperture of the camera.

Rotary shutter

A rotary shutter device for use in an electronic still camera or a VTR camera has an XY-addressable solid-state imaging device for converting an optical image read by successive horizontal scanning into a video signal, a shutter blade disposed in front of the solid-state imaging device and rotatable about its own axis, the shutter blade having at least one opening for transmitting light therethrough onto the photodetector surface of the solid-state imaging device, and an adjusting blade disposed adjacent to the shutter blade for varying the opening angle of the opening. The shutter and adjusting blades are rotatable together in a direction to successively expose the solid-state imaging device to incident light in the direction in which the solid-state imaging device is vertically scanned. The scanning of the solid-state imaging device for one field is completed between two successive exposures thereof through the opening in the shutter blade.

Rotary shutter device

A video camera with an integral VTR is disclosed, which has a support structure supporting a camera section and a VTR. The support structure has three base plates made integrally with one another and extending perpendicularly to one another. The first base plate is secured to a transverselly central portion of the rear surface of the second base plate. The first and second base plates are secured to the top surface of the third base plate. The VTR is mounted on the first base plate. A mount is secured by bars to the front surface of the second base plate, in such a way that it is spaced at a suitable distance therefrom. An image pickup lens system and an image sensor for converting light into an electrical signal are mounted on the mount. A grip is secured to the underside of a portion of the third base plate, where the first and second base plates cross each other.

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Omiya, Japan

Naoki Kobayashi