JPS6013060Y2 - Cassette tape recorder for duplication - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a cassette tape recorder for duplication.

First and second cassette mounting sections are provided in the same case, and the signal reproduced from the cassette mounted on the second cassette mounting section is recorded on the cassette mounted on the first cassette mounting section to perform a duplication operation. A cassette tape recorder for duplication is being considered.

Normally, in this type of tape recorder, operation buttons for recording, playback, forwarding, fast forwarding, etc. are provided for the first and second cassette mounting sections, respectively, so that they can be operated individually.

Therefore, in order to perform a copying operation, it is necessary to perform an operation to place one of the devices in the playback state and to place the other in the recording state.

Therefore, two operations must be performed at the same time.

The first object of this invention is to provide a cassette tape recorder for duplication that can be put into a duplication state by a single operation.

The second purpose of this invention is to create a cassette tape recorder for duplication in which when switching to the duplication mode, both cassette loading units will not start up at the same time unless a cassette is installed in one of the cassette loading units, thereby ensuring that the duplication operation is performed reliably. is to provide.

An embodiment of this invention will be described in detail below with reference to the drawings.

The figure shows an embodiment of this invention, in which numeral 1 indicates a first cassette mounted on a first cassette mounting section, and numeral 2 indicates a second cassette mounted on a second cassette mounting section.

Here, for example, it is assumed that the first cassette mounting section has recording and reproducing functions as usual, and the second cassette mounting section has only a reproducing function.

A first magnetic head 3 is in contact with the first cassette 1, and a second magnetic head 4 is in contact with the second cassette 2.

This figure shows a state in which the signal reproduced from the second cassette 2 is recorded on the first cassette 1, that is, a copy state.

For this purpose, the reproduction output of the reproduction head 4 that is in contact with the second cassette 2 is amplified by the reproduction amplifier 5, and is supplied to the recording amplifier 7 through the manual changeover switch 6, and the output of the recording amplifier 7 is attached to the first cassette mounting section. The recording head 3 is supplied to the recording head 3, and the signal reproduced from the second cassette 2 is recorded on the first cassette 1 mounted in the first cassette mounting section, thereby performing a duplication operation.

When the selector switch 6 is switched to the other side, a signal from an arbitrary signal source such as a microphone F can be recorded on the cassette 1 if necessary.

On the other hand, M1 indicates a drive motor for the first cassette mounting section;
Reference numeral 2 indicates a drive motor for the second cassette mounting section.

Further, 8 indicates a power supply, and 9 is turned on during recording, playback, rewinding, or fast forwarding operations, and is automatically turned off at the end of the tape by a shutoff mechanism attached to the first cassette mounting section.

The power switch 10 is a cassette attachment detection switch attached to the second cassette attachment part, and when the second cassette 2 is attached, its movable contact 10a is in contact with a normally open contact 10b, and when the cassette 2 is not attached, it is a normally closed contact. When the movable contact piece 10a comes into contact with the normally open contact 10c and the tape in the second cassette 2 finishes playing and the tape is stretched at the end, the movable contact piece 10a changes from the normally open contact 10b side to the normally closed contact 1 due to the shutoff mechanism.
It is configured to automatically return to the 0c side.

In this invention, the normally closed contact 10c and the normally open contact 10b of the cassette detection switch 10 are connected to a manual changeover switch 11.
When the cassette 2 is not mounted on the second cassette mounting section, the drive motor M1 of the first cassette mounting section is connected to the power switch 9 and the movable contact lea of the cassette mounting detection switch 10. and its normally closed contact 10C and one fixed contact 1 of the manual changeover switch 11
1c and the movable contact piece 11a, the drive motor of the second cassette mounting section is connected to the normally open contact 10b of the cassette mounting detection switch 10.

Therefore, the drive motor M2 of the second cassette mounting section will not be driven even if the power switch 9 is turned on unless the cassette 2 is mounted on the second cassette mounting section.

When the cassette 2 is installed in the second cassette installation section, the manual changeover switch 11 changes the movable contact piece 11a to the fixed contact 11.
Connect to side b.

That is, this switching position is in the duplication state and is switched in conjunction with the signal system changeover switch 6.

In this way, by controlling the drive motors M1 and M2 of the first and second cassette mounting sections by combining the cassette mounting detection switch 10 and the manual changeover switch 11, manual switching is possible when no cassette is mounted on the second cassette mounting section. By switching the switch 11 to the fixed contact 11c side, only the drive motor M1 of the first cassette mounting section can be operated independently.

In addition, when the cassette 2 is attached to the second cassette attachment section, if the manual changeover switch 11 is switched to the fixed contact 11b side, the drive motor M19M2 of the first and second cassette attachment sections is activated.
can be started and stopped at the same time by operating one power switch 9, eliminating the hassle of operating two operation buttons at the same time as in the past.

However, the power switch 9 is automatically shut off at the end of the tape by a shut-off mechanism attached to the first cassette attachment section, and the cassette attachment detection switch 10 is automatically shut off at the end of the tape by the shut-off mechanism attached to the second cassette attachment section. If you shut off the first and second
Even if whichever of the cassettes 1 and 2 mounted in the cassette mounting section reaches the end of the tape first, the drive motors M19M2 of the first and second cassette mounting sections can be stopped at the same time.
The replication operation can be performed reliably.

In the figure, reference numeral 11 indicates a pause switch, and by switching the pause switch 12 to the fixed contact 12b, the drive motor M1 of the first cassette mounting section can be stopped.
For example, unnecessary signal portions reproduced from the second cassette mounting section can be prevented from being recorded.

When the movable contact piece of this switch 12 is switched to the fixed contact piece 12c, the motor M□ rotates again and drives the tape.

However, at this time, the switch 13 linked to the switch 12 short-circuits the recording signal system to, for example, ground, so that an unrecorded part can be formed on the tape, and when the pause switch 12 is operated, the unnecessary signal is removed. It is possible to form a non-recording section of any length corresponding to the time.

As explained above, this invention has the advantage that it is possible to simultaneously start and stop the tape drive of the first and second cassette mounting sections with a single operation button, thereby simplifying the duplication operation.

Furthermore, when the manual changeover switch 11 is switched to the fixed contact 11b side to perform the duplication operation, if the cassette is not installed in the second cassette installation section, even if the recording operation button is operated and the power switch 9 is turned on, the first and second cassettes will not be connected. None of the drive motors M1° of the second cassette mounting section could be started.

There is no possibility that an inconvenience such as tape feeding of only one of the cassettes will occur when duplication is attempted.

Further, the drive motor M2 of the second cassette mounting section is driven only when the cassette 2 is mounted on the second cassette mounting section, so if the cassette 2 is not mounted on the second cassette mounting section, the first cassette mounting section will normally It can be used alone as a recording and reproducing device, and its effects are extremely convenient in practical use.

[Brief explanation of the drawing]

The figure is a connection diagram showing an embodiment of this invention. 1: Cassette attached to the first cassette attachment section, 2: Second cassette
A cassette mounted on the cassette mounting section, 9: power switch, 10: cassette mounting detection switch, 11: manual changeover switch, M1: tape drive motor of the first cassette mounting section, M2: tape drive motor of the second cassette mounting section.

Claims (1)

[Scope of utility model registration request] A duplicating cassette tape recorder having first and second cassette mounting parts and capable of recording signals reproduced from a cassette mounted in the second cassette mounting part onto a cassette mounted in the first cassette mounting part, which can be moved by manual operation. A manual changeover switch whose contact piece is switched between one fixed contact and the other fixed contact; a cassette attachment detection switch whose movable contact piece is switched from a normally closed contact to a normally open contact when a cassette is attached to the second cassette attachment section; For regeneration, a power switch is provided that is turned on in conjunction with the rewind, fast forward, etc. operation buttons, and the fixed contact of the manual changeover switch and the fixed contact of the cassette attachment detection switch are commonly connected to When the selector switch, the cassette attachment detection switch, and the power switch are connected in series, and no cassette is attached to the second cassette attachment section, the drive motor of the first cassette attachment section is connected to one of the fixed contacts of the power switch and the manual changeover switch. Power is supplied through the normally closed contacts of the cassette attachment detection switch, and when the cassette is attached to the second cassette attachment section, the drive motor of the first cassette attachment section is supplied with power through the other fixed contact of the power switch and the manual changeover switch. A cassette tape recorder for duplication in which power is supplied through a normally open contact of a cassette attachment detection switch, and power is supplied to a drive motor of a second cassette attachment section through a power switch and a normally open contact of the cassette attachment detection switch.