Olympus Optical Company, Ltd.

Hazime Osada

Shigeru Nemoto

Sinichi Saitou

Goro Kitajima

Akira Osanai

Hideo Tomabechi

An operating lever device for a magnetic recording tape transport apparatus which uses a tape cassette and which sets a magnetic recording tape transport mode in response to an electrical signal from signal generator, comprises a first base plate, a second base plate parallel to the first base plate with a distance therebetween, a first operating lever disposed between the base plates to be movable along the base plates between a first position to stop the signal from the generator and a second position in which the generator is allowed to generate the signal, a second operating lever disposed between the base plates to be movable along the base plates between first and second positions and parallel to the moving direction of the first operating lever, an auxiliary operating lever disposed between the base plates to be movable along the base plates among first, second, third and fourth positions and perpendicularly to a direction of movement of the first and second operating levers, the auxiliary operating lever in the first position thereof being spaced apart from the first and second operating levers located in the first positions thereof in the direction of movement of the first and second operating levers from the first position to the second position thereof, the auxiliary operating lever in the second position thereof being engaged with the first operating lever located at the second position thereof, the auxiliary operating lever in the third position.

Operating lever device of magnetic recording tape transport apparatus

An operating lever device for a magnetic recording tape driving apparatus which comprises a first base plate, a second base plate disposed parallel to the first base plate, and an operating lever disposed between the base plates so as to be able to move along the base plates between first and second positions. A signal generator is caused to produce an electric signal when the operating lever is located in the second position, and when a tape cassette is set on the second base plate so that a magnetic recording tape is driven in accordance with the electric signal by a motor with the aid of a pair of reel shafts. The operating lever device features a moving member disposed between the base plates so as to be able to move slidably along the base plates between first and second positions, and having one end portion which is located outside the space between the base plates so as not to face the tape cassette when the moving member moves between the first and second positions thereof, and a coupling member located between one plane including the surface of the operating lever which faces the second base plate and the other plane including the surface of the second base plate which faces the tape cassette. The coupling member is coupled with the one end portion of the operating lever which is located outside the space between the base plates when the operating lever moves between the first and second positions, and the one end portion of the moving member so as to shift the moving member from the first position to the second position thereof as the operating lever moves from the first position to the second position thereof. The moving member shifts from the second position to the first position thereof as the operating lever moves from the second position to the first position thereof.

Operating lever device of a magnetic recording tape driving apparatus

A signal detection operating lever device comprises a first base plate, a second base plate parallel to the first base plate, a first operating lever between the base plates movable between a first position in which signal generator stops generating signal to stop running of a recording tape and a second position in which the signal generator generates the signal to determine a recording tape transport mode in the tape recorder, a second operating lever having a magnetic head and disposed between the base plates to move the magnetic head between a first position in which the head is separated from a tape and a second position in which the head comes in contact with the tape, an accidental erasure preventive lever movable between a first position in which the second operating lever is prohibited to move from the first position to the second position thereof, and a second position in which the second operating lever is allowed to move from the first position to the second position thereof, a third operating lever between the base plates movable between a first position which allows movement of the accidental erasure preventive lever between the first and second positions thereof, and a second position in which the accidental erasure preventing lever is kept at the second position thereof, a function selecting switch connected to the second and third operating levers for allowing the head to function as an erase head upon movement of the second operating lever to the second position thereof and for allowing the head to function as a signal detecting head upon movement of the third operating lever to the second position thereof.

Signal detection operating lever device of magnetic recording tape

A cassette tape recorder used with a tape cassette loaded therein comprises a pair of capstans, a motor, a power transmission mechanism, a first and a second magnetic head assembly, a moving mechanism and a magnetic head assembly operation switching circuit. The motor rotates selectively in one or the other direction at the same constant speed and with the same characteristics. The transmission mechanism is coupled to the capstans and to the motor for transmitting the rotation of the motor to the capstans to cause simultaneous rotation of the capstans in one or the other direction at the same constant speed. The first and second assemblies move between a first position in contact with the tape in the loaded tape cassette and a second position spaced apart from the tape. In the first position, the first assembly can record magnetic signals in some track of the tape driven in one direction or reproduce magnetic signals from the track, and the second assembly can record magnetic signals in other track of the tape driven in the other direction or reproduce magnetic signals from the track. The moving mechanism moves the two assemblies simultaneously and in the same direction. The circuit electrically selects and renders operative the first assembly when the tape is driven in one direction and selects and renders operative the second assembly when the tape is driven in the other direction.

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Tokyo, Japan

Hazime Osada