JP2806885B2 - Tape buckling prevention mechanism of magnetic tape unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic tape device, and more particularly to a tape buckling prevention mechanism in a tape running section.

[0002]

2. Description of the Related Art A conventional tape buckling prevention mechanism of a magnetic tape device is disclosed in, for example, Japanese Patent Application Laid-Open No. 59-227011.

As shown in the front view of FIG. 5A and the side view of FIG. 5B, this tape buckling prevention mechanism has two tape guides on the side of the magnetic head 1 on the side of the magnetic tape running direction. 12 are fixed, and cylindrical members 13 are fixed to the inside of the tape guide 12 and the corners of the magnetic head 1, respectively.

Next, the operation of the tape buckling prevention mechanism will be described. First, when the magnetic tape 2 is wound around the magnetic head 1 and the tape guide 12, the concave portion of the tape guide 12 causes the magnetic tape 2 to jump in the width direction. (Sway) is regulated. Further, when the magnetic tape 2 is wound around the cylindrical member 13, the section in the running direction of the magnetic tape 2 that contacts the tape guide 12 presses a bent portion in an arc shape, so that the magnetic tape 2 buckles. Is to be prevented.

[0005]

The tape buckling prevention mechanism of the above-mentioned conventional magnetic tape device has a tape guide having the same width as the width of the magnetic tape so that the jump in the width direction of the magnetic tape can be reduced. For example, if the width of the magnetic tape used is larger than the width of the tape guide, the edge (tape edge) of the magnetic tape is damaged by the tape guide, and the service life of the magnetic tape is shortened. There is a disadvantage of doing so.

A cylindrical member is provided at the corner between the inside of the tape guide and the magnetic tape side. However, if the width of the magnetic tape is larger than the width of the tape guide, the magnetic tape must fit within the guide width. However, there is a disadvantage that the magnetic tape is refracted and deformed, and a gap may be formed between the vicinity of the center of the magnetic tape and the magnetic head, so that data writing / reading becomes unstable.

An object of the present invention is to cope with variations in the width of a magnetic tape, prevent damage to an edge portion,
An object of the present invention is to provide a tape buckling prevention mechanism of a magnetic tape device which has a long life of a magnetic tape and stabilizes writing and reading.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a tape buckling prevention mechanism for a magnetic tape device, which is disposed adjacent to a magnetic head in a running direction of a magnetic tape and prevents buckling of the magnetic tape and ensures stable running. A rotating shaft fixed on the head base, a lower flange fixed near the base of the rotating shaft to regulate a traveling position of the magnetic tape, and a traveling load of the magnetic tape rotatably attached to the rotating shaft. A roller to be reduced, an upper flange mounted near the upper portion of the rotary shaft so as to rotate and move vertically in opposition to the lower flange, and press the upper flange with a predetermined load in a width direction of the magnetic tape to thereby reduce the magnetic force. A spring for regulating the running position of the tape, an upper plate for urging the spring, and a flange fixed to the head base And Yafuto, held in the flange shaft, characterized in that it comprises a flange guide for regulating the posture of the upper flange.

[0009] The tape buckling prevention mechanism is disposed opposite to the magnetic head.

[0010]

Next, the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a front view of FIG. In FIG. 2, a part of the magnetic tape 2 is omitted for easy understanding of the configuration of the tape running mechanism.

Referring to FIGS. 1 and 2, a tape buckling prevention mechanism of a magnetic tape device according to the present invention is disposed so as to face a magnetic head 1 and be adjacent to a magnetic tape running direction. Two rotating shafts 8 fixed on the head base 3 to prevent bending and a lower flange 6 fixed near the base of the rotating shaft 8 to restrict the running position of the magnetic tape 2; A roller 7 rotatably mounted on the rotating shaft 8 to reduce the running load of the magnetic tape 2, an upper flange 9 mounted near the upper portion of the rotating shaft 8 so as to be rotatable and vertically movable in opposition to the lower flange 6; A spring 11 for pressing the upper flange 9 with a predetermined load in the width direction of the magnetic tape 2 to regulate the running position of the magnetic tape 2, and biases the spring 11. That the upper plate 10, and two flanges shaft 5 fixed to the head base 3, the upper flange 9, respectively held in the flange shaft 5
And a flange guide 4 for restricting the posture of the robot.

Next, the operation of the tape buckling prevention mechanism of the present invention configured as described above will be described.

FIG. 3 is a side view of FIG. Referring to FIG. 3, first, when the magnetic tape 2 is wound around the magnetic head 1 and the roller 7 on the head base 3, the distance between the upper flange 9 and the lower flange 6 is determined by moving the upper flange 9 up and down. It is varied so as to have the same size as the width of the tape 2. At this time, the upper flange 9 is
The portion wound around the roller 7 of the magnetic tape 2 is pressed with a predetermined load in the width direction of the magnetic tape 2 by the flange guide 4 urged by the above.

The posture (inclination) of the upper flange 9 is regulated by the flange guide 4, and the upper flange 9 is pressed almost vertically in the running direction of the magnetic tape 2 and vertically in the width direction of the magnetic tape 2. Therefore, a force that buckles and deforms the magnetic tape 2 is not generated. Therefore, since the magnetic tape 2 always runs in close contact with the sliding surface of the magnetic head 1, it is possible to write and read data stably.

Here, the sliding surface and the state of the magnetic tape 2 and the magnetic head 1 when the upper flange 9 is not attached to the flange guide 4 will be considered.

Referring to FIG. 4, in this case, the upper flange 9 is perpendicular to the width direction of the magnetic tape 2.
Since it is not pressed at 1, it is understood that the magnetic tape 2 is buckled and deformed. Therefore, in such a case, the edge portion (tape edge) of the magnetic tape 2 is easily damaged, and a gap is generated between the sliding surface of the magnetic head 1 and the magnetic tape 2 so that the magnetic tape 2 does not adhere sufficiently. The running of the magnetic tape 3 becomes unstable, and the writing and reading of data become unstable.

[0017]

As described above, the tape buckling prevention mechanism of the magnetic tape device of the present invention presses the magnetic tape in the width direction by the upper flange, and removes the portion bent in the tape running direction. Since the magnetic tape is pressed from directly above, the magnetic tape can be written and read accurately without buckling, and there is an effect that the life of the magnetic tape can be extended by preventing damage to the tape edge.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of a tape buckling prevention mechanism of the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is a side view of FIG. 1;

FIG. 4 is a side view for explaining the effect when there is no buckling prevention mechanism in FIG. 3;

FIG. 5 is a diagram showing an example of a conventional tape guide mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Magnetic head 2 Magnetic tape 3 Head base 4 Flange guide 5 Flange shaft 6 Lower flange 7 Roller 8 Rotation shaft 9 Upper flange 10 Upper plate 11 Spring 12 Tape guide 13 Column member

Claims (2)

(57) [Claims] 1. A tape buckling prevention mechanism for a magnetic tape device, which is disposed adjacent to a magnetic head in a direction in which a magnetic tape runs and prevents buckling of the magnetic tape to ensure stable running, and is fixed on a head base. A rotating shaft, a lower flange fixed near the base of the rotating shaft to regulate the running position of the magnetic tape, a roller rotatably mounted on the rotating shaft to reduce the running load of the magnetic tape, and a rotating shaft. An upper flange which is rotatably and vertically movable in opposition to the lower flange near an upper portion of the magnetic tape; and a spring which presses the upper flange with a predetermined load in a width direction of the magnetic tape to regulate a running position of the magnetic tape. An upper plate for biasing the spring; a flange shaft fixed to the head base; And a flange guide which is held by a shaft and regulates a posture of the upper flange. 2. The tape buckling prevention mechanism according to claim 1,
2. The tape buckling prevention mechanism for a magnetic tape device according to claim 1, wherein the tape buckling prevention mechanism is provided opposite to the magnetic head.