公开(公告)号：US4501795A

公开(公告)日：1985-02-26

申请号：US581764

申请日：1984-02-21

申请人： Takashi Takeuchi ,  Syoji Kobayashi ,  Tsuyoshi Ootani ,  Tetsuya Imamura

发明人： Takashi Takeuchi ,  Syoji Kobayashi ,  Tsuyoshi Ootani ,  Tetsuya Imamura

IPC分类号： G11B5/712 ,  C09D5/23 ,  C09D7/12 ,  C09D175/00 ,  C09D175/04 ,  G11B5/70 ,  G11B5/702 ,  G11B5/68

CPC分类号： G11B5/7013 ,  G11B5/7022 ,  Y10S428/90 ,  Y10T428/256 ,  Y10T428/257 ,  Y10T428/269 ,  Y10T428/2998 ,  Y10T428/31609 ,  Y10T428/31678 ,  Y10T428/31786

摘要： Magnetic recording particles (i) are coated with a reaction product of (ii) an isocyanate compound such as polyisocyanate compounds and isocyanate compounds having a hydrolyzable alkoxysilane group, and (iii) a phosphoric ester of an alkanol, alkenol, alkylene oxide additives thereof or aliphatic carboxylic alkylene oxides.

摘要翻译： 磁性记录颗粒（i）涂覆有（ii）异氰酸酯化合物如多异氰酸酯化合物和具有可水解烷氧基硅烷基团的异氰酸酯化合物的反应产物，和（iii）链烷醇，烯醇，其氧化烯添加剂的磷酸酯或 脂族羧酸环氧烷烃。

公开(公告)号：US4642720A

公开(公告)日：1987-02-10

申请号：US548566

申请日：1983-11-03

申请人： Nobuyuki Kishine ,  Tetsuya Imamura ,  Michihide Yamauchi ,  Tsuyoshi Ootani

发明人： Nobuyuki Kishine ,  Tetsuya Imamura ,  Michihide Yamauchi ,  Tsuyoshi Ootani

IPC分类号： G11B5/127 ,  G11B5/255 ,  G11B5/31 ,  G11B5/187 ,  G11B5/147

CPC分类号： G11B5/3106 ,  G11B5/1278 ,  G11B5/255

摘要： A magnetic head is disclosed in which a non-magnetic base substance which supports a writing or reading converter for writing or reading on a magnetic recording medium is constructed with an aggregate of carbon material, or a composite material comprising an aggregate of carbon material, and a thermosetting resin and/or a carbonaceous filler.

摘要翻译： 公开了一种磁头，其中支撑用于在磁记录介质上书写或读取的书写或读取转换器的非磁性基体由碳材料或包含碳材料的聚集体的复合材料构成，以及 热固性树脂和/或碳质填料。

公开(公告)号：US4786551A

公开(公告)日：1988-11-22

申请号：US116791

申请日：1987-11-05

申请人： Tsuyoshi Ootani ,  Junsaku Nakajima ,  Chiaki Abe ,  Ikuko Wada

发明人： Tsuyoshi Ootani ,  Junsaku Nakajima ,  Chiaki Abe ,  Ikuko Wada

IPC分类号： C09C1/48 ,  C09D5/23 ,  C09D7/12 ,  C10M103/02 ,  C10M105/34 ,  C10N20/06 ,  C10N40/18 ,  G11B5/702 ,  G11B5/708 ,  G11B5/71

CPC分类号： G11B5/708 ,  G11B5/7023 ,  Y10S428/90 ,  Y10T428/25 ,  Y10T428/30 ,  Y10T428/31609 ,  Y10T428/31935

摘要： Disclosed is a magnetic recording medium having a magnetic layer composed mainly of a magnetic powder and a resin binder, wherein the magnetic layer comprises (a) an ester compound comprising (a-1) an ester compound represented by the following formula (1): ##STR1## wherein R stands for a branched alkyl group having 13 carbon atoms,(a-2) butyl stearate and (a-3) butoxyethyl stearate, and (b) carbon black comprising (b-1) carbon black having an average single particle size of 10 to 50 m.mu. and (b-2) carbon black having an average single particle size of 200 to 1,000 m.mu..This magnetic recording medium has an excellent durability and is utilized as a floppy disk or the like.