JP2568362Y2 - Tape cartridge - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape cartridge having a head pad.

[0002]

2. Description of the Related Art Many pad chips of a head pad are
The tape is pressed against the head gap in a state in which the entire wall of the face is closely contacted with the magnetic head.

[0003]

The pad chip made of felt has a lower processing accuracy than other parts, and has large variations in finished dimensions, internal texture, or surface properties. Even in each pad chip, there is a difference in the surface properties and the density of the structure depending on the position of the sliding contact surface.
For this reason, the contact state (head touch) between the pad chip and the magnetic head varies, causing fluctuations in the input / output characteristics, and the running characteristics of the tape are easily damaged. If there is an extreme difference in the density of the internal structure, the tape may be partially stretched because the spring force of the pad holder is concentrated on the high-density portion.

The purpose of the present invention is to improve the surface condition of the pad chip to homogenize the properties of its sliding contact surface, to further optimize the head touch, and to improve the input / output due to variations in the properties of the head pad. An object of the present invention is to eliminate fluctuations in characteristics and deterioration in tape running characteristics.

[0005]

The present invention includes a head pad 6 for adhering the tape 2 to the magnetic head 17, and the head pad 6 includes a pad holder 7 made of a leaf spring and a pad holder 7 made of a leaf spring. In a tape cartridge comprising a pad chip 8 fixed at the center of the plate surface, the pad chip 8 is formed of a base 12 made of felt and a raised layer 13 provided on one side of the base 12. The chip 8 is located on the surface of the pad holder 7.
It is required that the base 12 be formed of a felt base 12 fixed at the center and a raised layer 13 having the surface of the base 12 itself raised .

[0006]

Cause hair layer 13 of the [action] base 12, the surface of the base 12
By raising the hair itself evenly, the surface properties and the tissue state can be made uniform as compared with the vulcanized felt . Each of the raised layers 13 is soft and easily deformed as compared with the block-like felt surface. This means that the pad chip 8
Brushed layer 13 is easy to adjust to the magnetic head 17,
This means that the tape 2 can be uniformly and evenly adhered to the magnetic head 17 in the head gap and the peripheral portion thereof, so that the head touch can be optimized.

[0007]

[Effect of the Invention] In this invention, the base 12 made of felt is used.
Since brushed surface itself to form formed a brushed layer 13, the
The surface properties and tissue state of the raised layer 13 can be homogenized as compared with the vulcanized felt surface.
The entire surface is soft and easily deformed, and the head touch can be optimized. As a result, the head pad 6 which can hold the tape in a stable state evenly is obtained. The overall performance of the cartridge can be improved.

[0008]

1 to 3 show an embodiment in which the present invention is applied to a Philips tape cartridge. The basic configuration of the tape cartridge is not different from the conventional example,
As shown in FIG. 2, an upper case and a lower case are connected in a lid-like manner to form a main body case 1, and hubs 3 around which a tape 2 is wound are arranged rotatably in the main body case 1. Body case 1
A head insertion window 4 is provided at the center of the front surface of the device.

In FIG. 1, a head pad 6 includes a pad holder 7 made of a press-formed product of a thin spring plate material, and a pad chip 8 bonded and fixed to the center of the plate surface of the pad holder 7.
Consists of The pad holder 7 is provided with a wide mounting portion 9 at the center in the left and right directions, and a spring arm 10 having a narrower width than the upper and lower sides extends from the upper and lower center portions of the mounting portion 9 to the left and right.
A hooking piece 11 is formed at the protruding end to bend toward the rear of the case.

The pad chip 8 comprises a base 12 made of felt made of rabbit or sheep wool, and a raised layer 13 provided on one side of the base. Then, the base 12 is adhesively fixed to the mounting portion 9. The brushed layer 13 covers the surface of the felt base 12 itself.
It is formed by brushing. The thickness of the raised layer 13 is 0.3 to 1.5.
Set to the range of mm .

The head pad 6 configured as described above is
The spring arm 10 of the pad holder 7 is dropped between the magnetic shield plate 5 and the guide pin 15 shown in FIG. 3, and the upper and lower edges thereof are received by the ribs 16 protruding from the inner surfaces of the upper and lower cases, so that a slight play is provided. Positioning is performed while including. 1
7 is a magnetic head.

The surface itself of the felt base 12 is brushed
Brushed layer 13 formed by the process, compared to the reduced絨block-shaped felt surface, familiar soft. Therefore, in the use state, as shown in FIG.
The tape 2 is pressed against the head gap in a state in which the tape 2 is evenly and closely contacted with the sliding contact surface of the magnetic head 17, so that the head touch is optimized, and the pad pressure can be evenly applied to the tape 2 passing through the head gap .

[Brief description of the drawings]

FIG. 1 is a perspective view of a head pad.

FIG. 2 is an internal plan view of the tape cartridge.

FIG. 3 is a plan view showing a use state of a head pad .

[Explanation of symbols]

 2 Tape 6 Head pad 7 Pad holder 8 Pad chip 12 Base 13 Brushed layer 17 Magnetic head

Claims (1)

(57) [Scope of request for utility model registration] 1. A head pad (6) for adhering a tape (2) to a magnetic head (17), the head pad (6) comprising a pad holder (7) made of a leaf spring and a pad fixed to the center of the plate surface of the pad holder (7). Chip 8
The pad chip 8 is located at the center of the plate surface of the pad holder 7.
A fixed felt base 12 and this base 12
And a raised layer 13 whose surface itself is raised .