摘要:
A master information carrier for magnetic transfer includes a base sheet which is formed of a magnetic material. The master information carrier is provided with an irregularity pattern representing information to be transferred to a magnetic recording medium and a magnetic layer formed along the irregularity pattern. The saturation magnetization Mm of the magnetic layer and the saturation magnetization Ms of the base sheet satisfy the condition 1.0
摘要:
A master information carrier for magnetic transfer to an in-plane magnetic recording medium includes a base sheet having an irregularity pattern representing information to be transferred to an in-plane magnetic recording medium and a magnetic layer formed along the irregularity pattern. The thickness da1 of the magnetic layer on the upper surface of a protruding portion of the irregularity pattern and the thickness da2 of the magnetic layer on each of the side surfaces of the protruding portion satisfy the following condition, 0.05
摘要:
A master information carrier for magnetic transfer to an in-plane magnetic recording medium includes a base sheet having an irregularity pattern representing information to be transferred to an in-plane magnetic recording medium and a magnetic layer formed along the irregularity pattern. The thickness da1 of the magnetic layer on the upper surface of a protruding portion of the irregularity pattern and the thickness da2 of the magnetic layer on each of the side surfaces of the protruding portion satisfy the following condition, 0.05
摘要:
A master information carrier for magnetic transfer to an in-plane magnetic recording medium includes a base sheet having an irregularity pattern representing information to be transferred to an in-plane magnetic recording medium and a magnetic layer formed along the irregularity pattern. The thickness da1 of the magnetic layer on the upper surface of a protruding portion of the irregularity pattern and the thickness da2 of the magnetic layer on each of the side surfaces of the protruding portion satisfy the following condition, 0.05
摘要:
An aspect of the present invention provides a master medium for perpendicular magnetic transfer, comprising: a disk-like substrate on a surface of which a plurality of protruding magnetic-layer patterns corresponding to information to be transferred to a magnetic recording medium targeted for transfer are formed. In the master medium for perpendicular magnetic transfer, a ratio of a circumferential width L of the protruding magnetic-layer patterns to a circumferential gap S between the protruding magnetic-layer patterns is L/S
摘要翻译:本发明的一个方面提供了一种用于垂直磁转移的主介质,其特征在于,包括:一个表面上的盘状衬底,其中多个突出的磁性层图案对应于要传送到用于传送的磁记录介质的信息 形成。 在用于垂直磁转移的主介质中,突出磁层图案的周向宽度L与突出磁层图案之间的周向间隙S的比率为L / S <1。 根据本发明的方面,可以进行良好的磁转移,因此可以获得没有缺陷并具有良好C / N比的垂直磁记录介质(从盘)。 另外,可以进行良好的磁转移。
摘要:
The present invention provides a mold structure including: a concavo-convex pattern formed on its surface, wherein the mold structure is used for transferring the concavo-convex pattern onto an imprint resist layer formed on a surface of a substrate having a thickness of 0.3 mm to 2.0 mm by placing the concavo-convex pattern against the imprint resist layer, and wherein a thickness Dm (mm) of the mold structure, a thickness Ds (mm) of the substrate and a curl amount C (mm) of the mold structure satisfy the relationship 0.01≦10,000×(Dm3/Ds3)1/2×C2≦250.
摘要:
A fine pattern which includes servo patterns, each constituted by servo elements, and groove patterns, each for separating adjacent data tracks, is formed on a substrate applied with a resist and placed on a rotation stage by scanning an electron beam on the substrate. While rotating the substrate in one direction, the electron beam is scanned so as to completely fill servo elements corresponding to a plurality of tracks one by one during one rotation of the substrate by X-Y deflecting the electron beam and vibrating back and forth in the radius direction. Each groove pattern is set as a line-up of a plurality of groove elements divided at a predetermined angle, and groove elements corresponding to the plurality of tracks following the writing of the servo elements are sequentially written by deflection scanning the electron beam largely in a circumferential direction during the same rotation.
摘要:
A fine pattern, to be formed on a discrete track medium, which includes servo patterns, each constituted by servo elements, and groove patterns, each for separating adjacent data tracks, is formed on a substrate applied with a resist and placed on a rotation stage by scanning an electron beam on the substrate. While rotating the substrate in one direction, the electron beam is X-Y deflected to scan servo elements corresponding to a plurality of tracks during one rotation of the substrate. Each groove pattern is set as a line-up of a plurality of groove elements divided at a predetermined angle, and groove elements corresponding to the plurality of tracks following the writing of the servo elements are sequentially written by deflection scanning the electron beam largely in a circumferential direction during the same rotation.
摘要:
There is provided a mold structure containing a substrate, and a plurality of convex portions formed in the shape of concentric circles at predetermined intervals on one surface of the substrate, wherein a cross-sectional shape of the convex portions with respect to a radial direction of the concentric circles is such that a middle width M of each of the convex portions with respect to a heightwise direction is greater than a width T of a top portion of each of the convex portions with respect to the radial direction of the concentric circles.
摘要:
Deflecting means, for deflecting an electron beam in a radial direction and the circumferential direction, and blanking means, for shielding irradiation of the electron beam at portions other than drawing portions, are provided. While the disk is rotated unidirectionally, the electron beam is repeatedly deflected in a figure 8 pattern, in which the electron beam is deflected toward the next deflection initiation point in the radial direction at track edge portions, such that the deflected directions toward the inner periphery of the disk and toward the outer periphery of the disk intersect each other. Parallel scanning is performed alternately toward the outer periphery and the inner periphery of the disk. Elements of a transfer pattern, having lengths which are integer multiples of a reference value, are drawn by performing scanning a number of times equal to the integer that the reference value is multiplied by.