Matsushita Electric Industrial Co., Ltd.

Tetsuki Asaoka

Akio Konishi

Hideaki Yoshio

Hiroshi Kurumatani

Eiji Nagasaki

Yoshitada Moriyasu

Takeshi Syuuke

Sigeo Ueda

Takashi Ando

Yoshinobu Kishimoto

Yoshihiro Makino

The invention is concerned with a magnetic recording/playback apparatus in which a magnetic tape is pulled out from a tape cassette and wound around a cylindrical rotary head cylinder, having a rotary head built therein, over a predetermined angle to record/playback signals through the rotary head, and more particularly, with a tape guide post driving mechanism, a pinch roller pressing mechanism and a tension serve mechanism. Specifically, the invention provides a tape guide post driving device which can reduce the size, weight and thickness of the apparatus by ensuring a large angle of thickness of the apparatus by ensuring a large angle of rotation of a rotating member, which includes a tension arm, in a direct manner. Also, the invention realizes a pinch roller pressing mechanism in which a sufficient stroke can be obtained even when a cam gear is reduced in its diameter and can provide a sufficient stroke even with a small amount of rotation. Further, the invention prolongs the service life and achieves a remarkable reduction in both the number of parts used and the number of assembling steps by using a pad brake (brake member), instead of a band brake, for braking a rotating member and bringing the brake member into full contact over the former's entire surface with the member being braked.

Magnetic recording/playback apparatus having a leaf-type resilient

The invention is concerned with a magnetic recording/playback apparatus in which a magnetic tape is pulled out from a tape cassette and wound around a cylindrical rotary head cylinder, having a rotary head built therein, over a predetermined angle to record/playback signals through the rotary head, and more particularly, with a tape guide post driving mechanism, a pinch roller pressing mechanism and a tension servo mechanism. Specifically, the invention provides a tape guide post driving device which can reduce the size, weight and thickness of the apparatus by ensuring a large angle of rotation of a rotating member, which includes a tension arm, in a direct manner. Also, the invention realizes a pinch roller pressing mechanism in which a sufficient stroke can be obtained even when a cam gear is reduced in its diameter and can provide a sufficient stroke even with a small amount of rotation. Further, the invention prolongs the service life and achieves a remarkable reduction in both the number of parts used and the number of assembling steps by using a pad brake (brake member), instead of a band brake, for braking a rotating member and bringing the brake member into full contact over the former's entire surface with the member being braked.

Magnetic tape driving system having rotating member with increased angle

A cassette loading apparatus including a cassette guide provided adjacent to an insertion opening of a tape cassette, a cassette holder, a pair of said plates for guiding the cassette holder during displacement thereof and a chassis having the cassette guide secured thereto, is characterized in that the side plates are mounted on the cassette guide from above with at least one portion of each of the side plates secured to the cassette guide and at least another portion of each of the side plates secured to the chassis.

Cassette loading apparatus

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Takatsuki, Japan

Tetsuki Asaoka