Magnetic head and magnetic recording or regenerating device
A magnetic head and recording medium technology, applied in magnetic recording, magnetic recording head, data recording, etc., can solve problems such as increased void loss, multi-magnetic powder, and reduced photographic image quality, and achieve the effect of reducing sliding damage
Inactive Publication Date: 2004-02-25
ALPS ALPINE CO LTD
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In addition, if the edge portion of recording media such as magnetic tape or camera film is made into a structure that slides on the sliding surface SO, the above-mentioned edge portion of the magnetic tape or film slides on the sliding surface SO, and is easily damaged by sliding. , it is easy to generate more magnetic powder at the edge
[0010] In this way, when the absolute amount of magnetic powder due to sliding damage increases, the amount of magnetic powder adhering to the magnetic gap Ga of the magnetic head and its surroundings increases, and as a result, the gap loss increases.
In addition, when the magnetic head is installed on the camera, more magnetic powder generated will adhere to the imaging part of the film, reducing the quality of the photographic image.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0033] In the magnetic head H shown in FIG. 1(A), FIG. 1(B) and FIG. 1(C), a support base 10 is provided, and a shield case 11 is provided on the support base 10 . The shield case 11 is formed of, for example, a magnetic material such as permalloy, and a surface 11 a facing the recording medium is formed in a curved shape with a predetermined curvature. The facing surface 11a is a cylindrical surface or a substantially cylindrical surface having a curvature in a sliding direction (X direction) with the recording medium.
[0034] The support base 10 is formed, for example, by injection molding of a hard synthetic resin, and is formed in a concave portion 10a at the center thereof, and the above-mentioned shield box 11 is provided thereon.
[0035] Figure 1(B), Figure 1(C) and figure 2 As shown, in the center of the facing surface 11a of the shield case 11, a frame portion (convex portion) 11b protruding toward the recording medium (Z(+) direction in the figure) is formed. The...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
In a existing magnetic head, the entire surface is sliding on the recording medium, therefor the magnetic powder and the like is easily generated. In a magnetic head of the invention, a frame part 11b is projected and formed on the front surface 11a of a shielding case 11 and the surface of the frame part is formed as a sliding surface 11c with which the recording medium comes into contact, by which the sliding area of the recording medium is reduced. Further, the four rising parts 11d of the frame part 11b and the sliding surface 11c are composed as a smooth continuous surface and, therefore, the friction between the recording medium and the sliding surface under sliding may be lessened. The lessening of the generation of dust, such as magnetic powder and magnetic material etc is thus made possible.
Description
technical field [0001] The present invention relates to a magnetic head for magnetically recording or reproducing a recording medium, in particular to a magnetic head that does not easily leave magnetic powder, dirt, etc. on the entire sliding surface in contact with the recording medium (magnetic surface) and a magnetic recording or reproducing magnetic head equipped with the magnetic head. regeneration device. Background technique [0002] 4(A) is a cross-sectional view showing a conventional thin magnetic head, and FIG. 4(B) is a cross-sectional view along line B-B in FIG. 4(A). [0003] This magnetic head is installed in a camera, for example. [0004] This magnetic head is formed by accommodating two sets of core assemblies 2 in a shield case 1 made of a magnetic material such as permalloy. In this core assembly 2, the core halves 2a and 2b are bonded to each other to form a magnetic gap Ga on the sliding side of the recording medium and a back gap Gb on the opposite ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G11B5/10G11B5/127G11B5/187
Inventor 小黑茂
Owner ALPS ALPINE CO LTD