公开(公告)号：US09984711B2

公开(公告)日：2018-05-29

申请号：US14869014

申请日：2015-09-29

Applicant: FUJIFILM CORPORATION

Inventor： Toshihide Aoshima ,  Wataru Kikuchi ,  Kazutoshi Katayama ,  Tatsuo Mikami

IPC: G11B5/708 ,  G11B5/70

CPC classification number: G11B5/7013

Abstract: The magnetic recording medium comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, and further comprises a compound denoted by Formula (1): wherein, in Formula (1), X denotes —O—, —S—, or NR1—; each of R and R1 independently denotes a hydrogen atom or a monovalent substituent; L denotes a divalent connecting group; Z denotes a partial structure of valence n comprising at least one group selected from the group consisting of carboxyl groups and carboxylate groups; m denotes an integer of greater than or equal to 2, and n denotes an integer of greater than or equal to 1.

公开(公告)号：US09406332B2

公开(公告)日：2016-08-02

申请号：US14845492

申请日：2015-09-04

Applicant: FUJIFILM CORPORATION

Inventor： Hidehiro Mochizuki ,  Tetsuya Watanabe ,  Toshio Sasaki ,  Tatsuo Mikami ,  Takumi Nakamura

IPC: G11B7/24 ,  G11B7/246 ,  G11B7/24038 ,  G11B7/245 ,  C08F220/18 ,  C08F226/06 ,  G11B7/2405 ,  G11B7/256

CPC classification number: G11B7/246 ,  C08F220/18 ,  C08F226/06 ,  C09D4/00 ,  G11B7/24038 ,  G11B7/2405 ,  G11B7/245 ,  G11B7/256 ,  C08F2220/185 ,  C08F220/34

Abstract: An optical information recording medium includes at least one recording layer. The recording layer includes a recording material comprising a polymer compound to which a one-photon absorption dye is bonded, and a coupling strength Δ2 between the one-photon absorption dye and the polymer compound in the recording material is higher than a coupling strength estimated to be exerted between the same one-photon absorption dye and the same polymer compound if the one-photon absorption dye is dispersed in the polymer compound in the recording material.

Abstract translation: 光学信息记录介质包括至少一个记录层。 记录层包括记录材料，该记录材料包含结合有单光子吸收染料的高分子化合物，记录材料中单光子吸收染料与高分子化合物之间的耦合强度Δ2高于估计为 如果单光子吸收染料分散在记录材料中的高分子化合物中，则施加在相同的单光子吸收染料和相同的聚合物化合物之间。

公开(公告)号：US08526291B2

公开(公告)日：2013-09-03

申请号：US13739668

申请日：2013-01-11

Applicant: FUJIFILM Corporation

Inventor： Hidehiro Mochizuki ,  Tatsuo Mikami ,  Shunichi Hoshino

IPC: G11B7/00

CPC classification number: G11B7/24035 ,  B82Y10/00 ,  G11B7/00455 ,  G11B7/0055 ,  G11B7/24038 ,  G11B7/245 ,  G11B7/246 ,  G11B7/248

Abstract: Optical information recording medium comprises: a plurality of recording layers 14, each of which undergoes a change in refractive index by irradiation with recording beam; and an intermediate layer 15 provided between recording layers 14. The recording layer 14 contains polymer binder and dye dispersed in the polymer binder, and at least in proximity to an interface (far-side interface 18) between the intermediate layer 15 and a recording layer 14 disposed adjacent to incident side of the intermediate layer 15 from which the recording beam enters the intermediate layer, the intermediate layer 15 has refractive index different from that of the recording layer 14. Glass transition temperature of the polymer binder is lower than melting point and decomposition point of the dye, and refractive index of the polymer binder changes by receiving heat generated when the dye absorbs the recording beam, whereby information is recordable in the recording layer.

Abstract translation: 光信息记录介质包括：多个记录层14，每个通过记录光束的照射而经历折射率的变化; 以及设置在记录层14之间的中间层15.记录层14包含分散在聚合物粘合剂中的聚合物粘合剂和染料，并且至少在中间层15与记录层之间的界面（远侧界面18）附近 14与中间层15的入射侧相邻设置，记录光从该入射侧入射到中间层，中间层15的折射率与记录层14的折射率不同。聚合物粘合剂的玻璃化转变温度低于熔点， 染料的分解点和聚合物粘合剂的折射率通过接收当染料吸收记录光束时产生的热量而改变，由此信息可记录在记录层中。