Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Tape record
Patent
1999-02-09
2000-11-14
Miller, Brian E.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Tape record
360 85, G11B 1522
Patent
active
061478334
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
This invention relates to a recording and/or reproducing apparatus employing a magnetic tape as a recording medium. More particularly, it relates to a recording and/or reproducing apparatus having a tape loading mechanism for pulling out a magnetic tape housed in a tape cassette loaded on a cassette loading mechanism within a main body unit of the apparatus by a tape loading mechanism for loading the tape on a pre-set tape running route.
BACKGROUND ART
A recording and/or reproducing apparatus employing a tape cassette housing a magnetic tape as a recording medium is currently in use. As this sort of the recording and/or reproducing apparatus, there is known an audio PCM tape recorder or a video tape recorder having a rotary magnetic head device which is comprised of a rotary magnetic head having sliding contact with the magnetic tape pulled out of the tape cassette, or a tape guide drive.
In this recording and/or reproducing apparatus, information signals are recorded and/or reproduced for a magnetic tape by causing the rotary magnetic head to have a sliding contact with the magnetic tape run from or to a tape guide drum.
The recording and/or reproducing apparatus having the rotary magnetic head device is provided with a tape loading mechanism for pulling out the magnetic tape housed in the tape cassette for being taken up on a tape guide drum after running on a pre-set tape running path in the main body unit of the apparatus. The tape loading mechanism has a movement guide block which is moved between the tape cassette loading mechanism and the rotary magnetic head device. This movement guide block has a guide roll about which the magnetic tape is hooked so as to be pulled out of the tape cassette and so as to be automatically loaded on the tape running route. The magnetic tape wound about the tape guide drum is run at a constant velocity as it is clinched between a capstan arbor run in rotation by a capstan motor and a pinch roll.
Meanwhile, in a recording and/or reproducing apparatus, such as an audio PCM tape recorder having a rotary magnetic head device, there are occasions wherein the magnetic tape is run in a direction reversed for the forward direction for recording and/or reproducing information signals for the magnetic tape as when retrieving the signals recorded on the magnetic tape or re-writing sub-codes.
For doing these operations, this sort of the tape recorder includes a mechanism for selectively driving supply side or take-up side reel shafts depending on the tape running direction. The mechanism for switching between the reel shafts to be in operation depending on the tape running direction is adapted for transmitting the driving force of the reel shaft driving motor to one of the reel shafts, and is provided independently of the capstan motor adapted for running the magnetic tape at a constant velocity.
With the recording and/or reproducing apparatus having the capstan motor for running the magnetic tape at a constant velocity and the driving motor for driving the reel shaft, the capstan motor and the reel shaft driving motor can be controlled independently of each other, and hence the magnetic tape can be taken up simultaneously with switching of the running direction of the magnetic tape, thus assuring prompt switching of the tape running direction.
With this sort of the recording and/or reproducing apparatus, the following inconvenience arises when accommodating the magnetic tape pulled out on the tape running route in the tape cassette by way of unloading for taking out the tape cassette from the cassette loading unit in the main body unit of the apparatus.
For loading the magnetic tape on a pre-set tape running route, the magnetic tape is pulled out of the tape cassette. It is therefore necessary for the driving force transmitting gear transmitting the driving force of the reel shaft driving motor to the supply side reel shaft not to mesh with the supply side reel shaft. For unloading the magnetic tape, it is necessary for the driving power transmitting gear to b
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Maioli Jay H.
Miller Brian E.
Sony Corporation
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