公开(公告)号：EP2107559A1

公开(公告)日：2009-10-07

申请号：EP09004531.1

申请日：2009-03-30

申请人： Fujifilm Corporation

发明人： Nishida, Yoichi ,  Usuki, Kazuyuki

IPC分类号： G11B5/855 ,  G11B5/86

CPC分类号： G11B5/855 ,  B82Y10/00 ,  G11B5/743 ,  G11B5/865

摘要： A production method of a magnetic transfer master carrier, the method including forming an imprint resist layer on a surface of a magnetic layer of a laminate which includes a first base material and the magnetic layer laminated thereon; forming a resist pattern, following shapes of concave portions of a mold, on the surface of the magnetic layer by pressing the concave portions against the imprint resist layer; and forming magnetic convex portions on the first base material by removing the mold from the imprint resist layer and then etching a surface of the magnetic layer which surface has no resist pattern, wherein the mold includes a second base material and the concave portions formed by etching a surface of the second base material so as to correspond to a pattern of information to be recorded on a magnetic recording medium.

摘要翻译： 一个磁复制主载体的制造方法，该方法包括压印的形成层压板，其包括第一基材和在其上的磁性层的层叠的磁性层的表面上的抗蚀剂层; 通过压靠压印凹部的抗蚀剂层上形成抗蚀剂图案，之后的模具的凹部的形状时，磁性层的表面上; 并通过从压印去除所述模具的抗蚀剂层，然后蚀刻所述磁性层，其表面已没有抗蚀剂图案的表面，worin模具形成在第一基体材料的磁性的凸部包括通过蚀刻形成的第二基材和凹部 要被记录在磁记录介质上的第二基体材料的，以便对应于信息的图案的表面。

公开(公告)号：EP1184846A3

公开(公告)日：2008-03-26

申请号：EP01118853.9

申请日：2001-08-14

申请人： FUJIFILM Corporation

发明人： Nishikawa, Masakazu ,  Usuki, Kazuyuki ,  Aoki, Masashi

IPC分类号： G11B5/86

CPC分类号： G11B5/865 ,  G11B23/505

摘要： A magnetic transfer method for magnetically transferring information signals such as servo signals from a master medium to a slave medium, capable of reducing a range of signal missing due to insufficient contact of the two mediums originating from an adhering substance, thus enhancing signal quality. When the master medium bearing an information signal and the slave medium are brought into close contact with each other, a transferring magnetic field is applied thereto, thus magnetically transferring the information signal from the master medium to the slave medium. An elastic member made of a material having an elastic property so as to deform in accordance with a surface shape of the slave medium during contact pressure application and to restore to an original surface shape thereof during release of the slave medium from the master medium can be interposed between a back of the slave medium and a pressing surface of a pressing support member.

公开(公告)号：EP1220204A3

公开(公告)日：2007-04-04

申请号：EP01130504.2

申请日：2001-12-21

申请人： FUJIFILM Corporation

发明人： Nishikawa, Masakazu ,  Usuki, Kazuyuki ,  Usami, Yoshihisa ,  Nagao, Makoto

IPC分类号： G11B5/00 ,  G11B5/596 ,  G11B11/105

CPC分类号： G11B5/865 ,  B82Y10/00 ,  G11B5/5526 ,  G11B5/59677 ,  G11B5/743 ,  G11B5/82 ,  G11B5/825 ,  G11B11/10526 ,  G11B11/10565 ,  G11B11/10576 ,  G11B11/10578 ,  G11B11/10582 ,  G11B2005/0021

摘要： There are provided an information recording medium which permits accurate tracking servo, and a method for recording and reproducing for an information recording medium which allows recording and reproducing of a signal at a favorable S/N by carrying out at least one of information recording and information reproduction while accurately performing tracking servo. A magneto-optic disk (10) includes a magnetic recording layer (16) for magnetically recording information. The magnetic recording layer is in advance magnetized for concentrically or spirally around the center of the disk in such a manner that magnetized regions (16A,16B) are disposed such that adjacent regions are magnetized in different directions and alternately arranged in the radial direction of the disk. Accordingly, tracking can be continuously performed and accurate tracking servo can also be performed.