Sony Corporation

Susumu Matsubara

Seiji Sato

Hisashi Suwa

Eiji Yano

Katsuyuki Koizumi

Toyomi Fujino

Norio Hasegawa

The present invention is concerned with a helical scan type rotary magnetic head device employed for example in a video tape recorder in which the magnetic tape is caused to run obliquely while it contacts the head and in which recording tracks are formed on the magnetic tape at a predetermined angle of inclination relative to the tape. According to the present invention, the tape guide drum along the side of which the magnetic tape is caused to run while contacting with it has a cut-out at its portion free of contact with the magnetic tape, while a rotary transformer adapted for receiving and transmitting recording and/or reproducing signals at or from a rotary magnetic head is mounted so as to be enclosed within the interior of the tape guide drum to reduce the size and thickness of the rotary magnetic head device.

Rotary magnetic head and guide drum assembly with reduce mounting height

A magnetic recording and/or reproducing apparatus which includes a rotary magnetic head device, a reel block base plate provided on a chassis plate and having a pair of reel blocks horizontally reciprocable relative to the rotary magnetic head device and operatively engaged with a pair of tape reels of a tape cassette, a cassette holder which is supported by a supporting arm on the chassis base plate so as to be vertically movable relative to the reel block and in which the tape cassette is inserted and retained, an operating mode changeover lever for selecting the various operating modes, including constant speed running, rapid feed and rewind modes, for the magnetic tape pulled out of the tape cassette and loaded into the predetermined tape path, and a drive gear driven into rotation by a driving electric motor, wherein the drive gear is operatively associated with the supporting arm and the reel block base plate. The drive gear is driven into rotation to cause vertical movement of the cassette holder and the reciprocating movement of the reel block base plate. An operating lever adapted for being turned by the drive gear is operatively associated with the operating mode changeover lever, and turned to shift the operating mode changeover lever to select one of the predetermined operating modes. In this manner, the operations of loading the tape cassette and the magnetic tape and of selecting the operating mode may be performed by one and the same driving motor to reduce the number of the driving motors and the size and the thickness of the apparatus, while the cassette attachment and detachment and magnetic tape loading and unloading operations can be performed expeditiously.

Magnetic recording and/or reproducing apparatus

A disc player fitted for automatic change of discs comprises a disc pack receiving table for receiving and holding a disc pack containing a plurality of discs, a disc rotating device for rotating a disc taken out from the disc pack and loaded thereon, and a movable chassis operative to move up and down in relation to the disc pack receiving table and provided with a mechanical arrangement comprising a sliding lever for actuating a sliding member provided in the disc pack to take a selected disc out of the disc pack, a motor for rotating selectively in the clockwise and counterclockwise directions, a driving roller for being rotated with the rotatory driving force produced by the motor to carry the selected disc taken out from the disc pack to the disc rotating device, and a driving mechanism actuated with the rotatory driving force produced by the motor for driving the sliding lever in the manner for taking a disc out of the disc pack when the motor rotates in one of the clockwise and counterclockwise directions and for driving the sliding lever to put back the same when the motor rotates in the other of the clockwise and counterclockwise directions.

Growing community of inventors

Kanagawa, Japan

Susumu Matsubara