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Method for producing master carrier for magnetic duplication

A production method and carrier technology, which is applied in the manufacture of record carriers, disk-shaped carriers, and alignment of magnetic tracks on magnetic disks, can solve problems such as inability to correspond, and achieve high-quality reproduction and good reproducibility

Inactive Publication Date: 2003-09-10
FUJIFILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, laser light is mainly used as the exposure light source, but with the increase of recording density, if the track width and pattern width are required to be miniaturized, the drawing diameter of the laser cannot correspond

Method used

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  • Method for producing master carrier for magnetic duplication
  • Method for producing master carrier for magnetic duplication
  • Method for producing master carrier for magnetic duplication

Examples

Experimental program
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Embodiment Construction

[0025] Embodiments of the present invention will be described below with reference to the drawings.

[0026] Next, a method for producing the master carrier for magnetic duplication of the present invention will be described. figure 1 It is a schematic diagram showing the process of creating the original disk of the master carrier for magnetic duplication. figure 2 It is a plan view of the phase servo pattern of the original disk.

[0027] Next, the method of producing the original disk of the master carrier for magnetic duplication of this embodiment will be described. like figure 1 As shown in (a), while rotating the circular substrate 11 made of, for example, glass or quartz in one direction, a positive film dissolved in an organic solvent is applied from the nozzle 13 to the circular substrate 11 by the spin coating method. After drawing the resist solution 12' for the resist 12 with a type electron beam, it is baked.

[0028] Next, if figure 1 As shown in (b), while...

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Abstract

To produce a phase servo pattern on a magnetic transfer substrate by using an electron beam. A round base plate 11 having a resist for electron beam lithography is rotated in the X direction, then an electron beam EB scans it radially (Y direction) from Y1 to Y2. Thus, an element 12a is drawn obliquely from Y11 to Y12.

Description

technical field [0001] The invention relates to a method for making a master carrier for magnetic replication with a concave-convex pattern for magnetically replicating information to a magnetic recording medium, in particular to a method for making an original disk of the master carrier, that is, the concave-convex pattern has an oblique angle to the track direction A phase servo pattern, and a method of describing this pattern by an electron beam. Background technique [0002] In a magnetic recording medium such as a hard disk, areas in which servo information such as a servo signal for a track position, an address information signal for the track, and a playback clock signal are recorded are provided at constant angular intervals. As a method of recording servo signals in a magnetic recording medium, a magnetic duplication method is widely used. This method is a state in which the surface of a master carrier for magnetic duplication having a concavo-convex pattern of a m...

Claims

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Application Information

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IPC IPC(8): G11B5/596G11B5/82G11B5/84G11B5/86G11B9/10
CPCG11B5/59633G11B5/82G11B5/86
Inventor 小松和则宇佐利裕
Owner FUJIFILM CORP