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Magnetic copy device

A replication device and magnetic technology, applied in magnetic recording, re-recording, data recording, etc., can solve problems such as signal loss, uneven adhesion, and difficult adhesion state, so as to reduce the thickness and prevent the offset of the replication position , The effect of suppressing the decrease of signal writing position accuracy

Inactive Publication Date: 2003-04-23
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, even if the vacuum suction method is adopted, when the holding device cannot uniformly apply the load on the slave medium or the master disc carrier, it is still difficult to obtain a uniformly adhered state as a whole.
This is because in addition to the influence of the flatness of the master carrier and the slave media itself on the uniform adhesion, the parallelism of the upper and lower holding devices for placing the slave media and the master carrier is required to be high-precision, and the upper side of the rigid body It is not only difficult in quality control, but also disadvantageous in terms of cost.
If these accuracies are not achieved, the adhesion will be uneven, and local signal loss may occur.

Method used

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Embodiment Construction

[0024] Hereinafter, the present invention will be described in detail by the embodiments shown in the corresponding drawings. figure 1 It is a perspective view of main parts showing a transfer state of a magnetic transfer device according to an embodiment of the present invention. figure 2 is a cross-sectional view of the holding device. In addition, each drawing is a schematic diagram, and the dimensions of each part are not in proportion to the actual dimensions.

[0025] figure 1 The shown magnetic duplication device 1 has an upper side holding part 11 and a lower side holding part 12, such as figure 2 As shown, in the internal space 6 formed inside, there is a holding device 10 for the slave medium 2 and the master disc carrier 3 to be arranged in a state where the slave medium 2 and the master disc carrier 3 overlap each other, so that the slave medium 2 and the master disc carrier 3 are facing each other. The gas in the internal space 6 of the holding device 10 is v...

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Abstract

A magnetic transfer apparatus is provided, wherein, a master carrier 3 carrying transfer information and a slave medium 2 to received transfer are housed in an inner space 6 of a holder 10 so as to make the master carrier 3 and the slave medium 2 come into close contact with each other, and adhesion is obtained by evacuating the inner space 6 with an evacuating means. The holder 10 consists of an upper holder 11 and a lower holder 12 which slide in touch and separately, and in such a case, a flat plate part 11a located at the rear face of the slave medium 2 or the master carrier 3 in at least either the upper holder 11 or the lower holder 12 has flexibility, is deformed by pressure that acts when the inner spade is evacuated and applies adhesion equally.

Description

technical field [0001] The present invention relates to a magnetic duplication apparatus from an information-carrying master carrier to a slave medium by magnetic duplication. Background technique [0002] Magnetic transfer is to copy the magnetization pattern corresponding to the information (such as servo signal) carried on the master carrier by applying a magnetic field for transfer in the state where the slave medium and the master carrier are in close contact. Such a magnetic transfer method is disclosed in, for example, JP-A-63-183623, JP-A-10-40544, JP-10-269566, and the like. [0003] In addition, when the slave medium is a disk-shaped medium such as a hard disk or a high-density floppy disk, a disk-shaped master carrier is placed on one or both sides of the slave medium in a state where one or both sides of the slave medium are in close contact with each other. The magnetic field applying means of the electromagnet means or the permanent magnet means applies a magn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/86
CPCG11B5/865G11B5/86
Inventor 镰谷彰人
Owner FUJIFILM CORP