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51. 发明专利

JPH0765355A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH0765355A
公开(公告)日：1995-03-10
申请号：JP20948093
申请日：1993-08-24
申请人： FUJI PHOTO FILM CO LTD
发明人： ISHIDA TOSHIO , WATANABE HIDEOMI , SATAKE MASANORI , HASHIMOTO HIROSHI , OKITA TSUTOMU
IPC分类号： C10M105/54 , C09D171/02 , C10N30/12 , C10N40/18 , G11B5/64 , G11B5/71 , G11B5/72 , G11B5/725 , G11B5/73
摘要： PURPOSE:To obtain a metallic thin film type magnetic recording medium excellent in running performance, durability and preservability. CONSTITUTION:This magnetic recording medium has a ferromagnetic metallic thin film on the nonmagnetic substrate. A carbon film may be formed on the metallic thin film and this medium has a surface layer contg. at least one of a fluorine-contg. compd. represented by a general formula Rf-Rh-COO-(R1O)n-R2 and a fluorine-contg. compd. represented by a general formula Rf-Rh-COO-(R1O)n- R3-Rf. A corrosion inhibitor and an extreme-pressure additive may further be contained in the surface layer. In the formulae, Rf is (CF3)aCF3-a(CF2)b, 1

52. 发明专利

JPH0765353A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH0765353A
公开(公告)日：1995-03-10
申请号：JP20766693
申请日：1993-08-23
申请人： FUJI PHOTO FILM CO LTD
发明人： OKITA TSUTOMU , WATANABE HIDEOMI , ISHIDA TOSHIO , SATAKE MASANORI , HASHIMOTO HIROSHI
IPC分类号： C10M169/04 , C10N30/06 , C10N40/18 , G11B5/66 , G11B5/71 , G11B5/72 , G11B5/735
摘要： PURPOSE:To obtain a metallic thin film type magnetic recording medium excellent in running performance, durability and preservability. CONSTITUTION:This magnetic recording medium has a ferromagnetic metallic thin film on at least one side of the nonmagnetic substrate. A carbon film may be formed on the metallic thin film and this medium has a surface layer contg. at least one of a fluorine-contg. compd. represented by a general formula Rf-R1 and a fluorine-contg. compd. represented by a general formula Rf-R2-Rf. One or more kinds of fluorine-contg. compds. each having a polar group and a perfluoroalkyl group and a corrosion inhibitor may further be contained in the surface layer. They may be contained in the back coat layer or may be applied to coat. In the formulae, Rf is (CF3)aCF3-a(CF2)b, 1

53. 发明专利

JPH06301967A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH06301967A
公开(公告)日：1994-10-28
申请号：JP9124993
申请日：1993-04-19
申请人： FUJI PHOTO FILM CO LTD
发明人： OKITA TSUTOMU , ISHIDA TOSHIO
IPC分类号： G11B5/71 , C09D171/02 , C10M105/54 , C10M139/04 , C10M169/04 , C10N40/18 , C10N50/08 , G11B5/64 , G11B5/72 , G11B5/725
摘要： PURPOSE:To obtain a metallic thin film type magnetic recording medium having an excellent running property, durability, and preservability. CONSTITUTION:In the recording medium having a ferromagnetic metallic thin film on at least one surface of a nonmagnetic substrate, a protective layer which contains a silane coupling agent having a >=6C alkyl group and fluorine compound which has a perfluoroalkyl group at one end of its molecule and alkyl group containing no fluorine at the other end is formed on the metallic thin film.

54. 发明专利

JPH06103559A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH06103559A
公开(公告)日：1994-04-15
申请号：JP25288692
申请日：1992-09-22
申请人： FUJI PHOTO FILM CO LTD
发明人： ISHIDA TOSHIO , SATAKE MASANORI , OKITA TSUTOMU
IPC分类号： G11B5/708 , C09D5/23 , C10M105/54 , C10M105/72 , C10M105/74 , C10N40/18 , G11B5/71 , G11B5/73
摘要： PURPOSE:To provide a magnetic recording medium with a coating type magnetic layer excellent in running property, durability and preserva-bility. CONSTITUTION:This magnetic recording medium has a magnetic layer based on ferromagnetic powder and a binder on at least one side of the nonmagnetic substrate and contains at least one kind of fluorinecontg. compd. in the magnetic layer. The fluorine-contg. compd. has at least two perfluoroalkyl groups represented by formula I or II and one or more polar groups selected from among -OH, -COOM, -PO3M2, -OPO3M2 and -O(CH2)bSO3M [M is H an alkali metal or ammonium and (b) is an integer of 0-4]. In the formulae I, II, (n) is an integer of 2-10, (m) is an integer of 1-18 and n+m=6 to 26. High lubricity is ensured for this magnetic recording medium.

55. 发明专利

JPH0668460A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH0668460A
公开(公告)日：1994-03-11
申请号：JP22232392
申请日：1992-08-21
申请人： FUJI PHOTO FILM CO LTD
发明人： ISHIDA TOSHIO , SATAKE MASANORI , OKITA TSUTOMU
IPC分类号： G11B5/66 , C10M105/54 , C10M105/72 , C10M105/74 , C10N40/18 , G11B5/64 , G11B5/72 , G11B5/725 , G11B5/73
摘要： PURPOSE:To improve the dissolution in an org. solvent of a hydrocarbon system and to enable the formation of a protective layer with respect to an org. solvent of a hydrocarbon system by having a perfluoroalkyl chain and hydrocarbon part within one piece of molecule. CONSTITUTION:This magnetic recording medium has a magnetic layer consisting of a ferromagnetic metallic thin film on one surface of a nonmagnetic base. This magnetic recording medium is constituted by forming a layer contg. at least two pieces of the perfluoroalkyl groups expressed by formula I or formula II and at least one kind among the fluorine compd. having >=1 pieces of the polar groups selected from a group of -OH, -COOM, -SO3M, -OSO3M, -PO3M2, -OPO3M2 (where M is a hydrogen atom, alkaline metal, ammonum) on the magnetic layer. In the formula I, the formula II, n: integer from 2 to 10, m: integer from 1 to 18, n+m: integer from 6 to 26. The protective film having the high preservable property, traveling property and durability in combination which are heterofore not obtainable with the conventional lubricants is obtd. and the high-density magnetic recording medium is obtd.

56. 发明专利

JPH0457215A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH0457215A
公开(公告)日：1992-02-25
申请号：JP16526290
申请日：1990-06-22
申请人： FUJI PHOTO FILM CO LTD
发明人： ISHIDA TOSHIO , NISHIKAWA YASURO , USHIMARU AKIRA
IPC分类号： G11B5/702 , C09D5/23 , C09D7/12 , C10M105/56 , C10N40/18 , G11B5/708
摘要： PURPOSE:To obtain excellent durability and environmental adaptability by incorporating or holding a specified urea deriv. into a magnetic layer. CONSTITUTION:The magnetic layer provided on a nonmagnetic base contains or holds the urea deriv. expressed by formula I. In the formula I, R1 denotes>=10 and =1 and =1 and

57. 发明专利

JPH03278314A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH03278314A
公开(公告)日：1991-12-10
申请号：JP7697390
申请日：1990-03-28
申请人： FUJI PHOTO FILM CO LTD
发明人： ISHIDA TOSHIO , NISHIKAWA YASURO , USHIMARU AKIRA
IPC分类号： G11B5/708 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C10M105/56 , C10M105/74 , C10N40/18 , G11B5/64 , G11B5/71 , G11B5/73
摘要： PURPOSE:To always obtain stable traveling durability even under severe conditions such as high temp. high humidity or low temp. low humidity and to prevent deterioration of characteristics of the medium by incorporating quater nary ammonium salt of specified phosphoric ester into a magnetic layer or into the surface of the magnetic layer. CONSTITUTION:The magnetic recording medium consists of a nonmagnetic supporting body and a magnetic layer formed thereon. The magnetic layer or the surface of the magnetic layer contains quaternary ammonium salt of phosphoric ester expressed by formulae I and/or II. By using the quaternary ammonium, ionic bond with the phosphoric ester can be increased, which signifi cantly suppresses dissociation of salt against changes in temp. and hyumidity. The ammonium salt itself has high melting point and gives solid lubricating effect, high adhesion property and good lubricating property in a wide temp. range. Thereby, when a binder containing polar groups is used as the binder for the coating type magnetic recording medium, the effect of the ammonium salt is significant. Thereby, the medium has stable traveling durability even under severe conditions such as high temp. high humidity or low temp. low humidity, and shows no deterioration in the characteristics during storage.

58. 发明专利

JPH0380420A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH0380420A
公开(公告)日：1991-04-05
申请号：JP21561889
申请日：1989-08-22
申请人： FUJI PHOTO FILM CO LTD
发明人： NISHIKAWA YASURO , WATANABE HIDEOMI , ISHIDA TOSHIO
IPC分类号： G11B5/72 , G11B5/64 , G11B5/66
摘要： PURPOSE:To obtain a metal thin film type magnetic recording medium having excellent weather resistance and durability under various environmental conditions of a wide range by providing a ferromagnetic metal thin film magnetic layer the surface of which is treated with halide of oxo acid having substd. or unsubstd. hydrocarbon group on a nonmagnetic supporting body. CONSTITUTION:The magnetic recording medium has a ferromagnetic metal thin film magnetic layer on a nonmagnetic supporting body and the surface of the magnetic layer is treated with halide of oxo acid having substd. or unsubstd. hydrocarbon group to form a strong protective layer comprising substd. or unsubstd. hydrocarbon on the surface of the magnetic layer. This protective layer protects the metal thin film magnetic layer and improves weather resistance and traveling durability of the medium. The halide of oxo acid modifies the metal thin film surface and adheres thereon to form an extremely strong surface-treated layer which has large protective effect for the magnetic layer. Thus, the medium has excellent weather resistance and durability under various environmental conditions of a wide range.

59. 发明专利

JPH02287920A MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH02287920A
公开(公告)日：1990-11-28
申请号：JP10782589
申请日：1989-04-28
申请人： FUJI PHOTO FILM CO LTD , NISSHIN OIL MILLS LTD
发明人： ISHIDA TOSHIO , NISHIKAWA YASURO , OKITA TSUTOMU , HIGAKI YUZO
IPC分类号： G11B5/708 , C09D5/23 , C09D127/04 , C09D127/06 , C09D175/06 , C10M105/70 , C10N40/18 , G11B5/72 , G11B5/725
摘要： PURPOSE:To improve electromagnetic conversion characteristics and environmental adaptability by incorporating a specified imidazoline derv. into a magnetic layer provided on a nonmagnetic supporting body or into the surface of the magnetic layer. CONSTITUTION:Imidazoline derv. expressed by formula I or II is incorporated into the magnetic layer provided on a nonmagnetic supporting body or into the surface of the magnetic layer. In formulae I, II, R represents an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl group with >5 carbons. R represents an alkyl, alkenyl, hydroxyalkyl, hydroxyalkenyl or aryl group with >5 carbons. R represents alkylene, alkenylene or phenylene group with 1 - 34 carbons. n is 0 or 1, X is an alkylene, alkenylene or phenylene group with 2 - 34 carbons. Thereby, the electromagnetic conversion characteristics of the medium is improved and also the traveling property and durability can be improved in a wider range of temp. and humidity.

60. 发明专利

JP2004253139A Manufacturing method of optical information recording medium 审中-公开
标题翻译：光信息记录介质的制造方法
公开(公告)号：JP2004253139A
公开(公告)日：2004-09-09
申请号：JP2004174206
申请日：2004-06-11
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： ISHIDA TOSHIO
IPC分类号： G11B7/26
摘要： PROBLEM TO BE SOLVED: To provide a manufacturing method of an optical information recording medium having high preservation durability.
SOLUTION: The manufacturing method of the optical information recording medium includes the steps of: coating a disk shaped substrate having a hole section at the center up to the outer peripheral tip section of the substrate with cyanine-based dye to form a dye recording layer; removing the dye recording layer of the inner side vicinity region of the outer peripheral tip section of the substrate to form an exposed region on the substrate surface; forming a reflection layer on the recording layer; and forming a protective layer on the reflection layer and the exposed region of the substrate surface. Removal of the dye recording layer is conducted using 1-methoxy-2-propanol before the cyanine system dye applied layer is dried.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：要解决的问题：提供具有高保存耐久性的光学信息记录介质的制造方法。光学信息记录介质的制造方法包括以下步骤：用花青染料将中心的孔部的圆盘状基材涂布到基板的外周末端部，形成染料记录层去除衬底的外周端部的内侧附近区域的染料记录层，以在衬底表面上形成暴露区域; 在记录层上形成反射层; 以及在反射层和基板表面的暴露区域上形成保护层。在花青系染料涂层干燥之前，使用1-甲氧基-2-丙醇进行染料记录层的除去。版权所有（C）2004，JPO＆NCIPI

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