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1. 发明专利

JP2006252710A Optical information recording medium 审中-公开
标题翻译：光信息记录介质
公开(公告)号：JP2006252710A
公开(公告)日：2006-09-21
申请号：JP2005069964
申请日：2005-03-11
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： TSUNODA TAKESHI , TAKANO HIROAKI
IPC分类号： G11B7/254 , G11B7/24 , G11B7/257
摘要： PROBLEM TO BE SOLVED: To provide an optical information recording medium which is high in productivity and is prevented from curvature. SOLUTION: The optical information recording medium has: at least an information recording layer; an adhesive layer; and a transparent sheet in this order on one face side of a substrate, and at least a label layer on the other face side. The transparent sheet has an elastic modulus of 2,000 Mpa or higher, a thermal expansion coefficient of 40 ppm/°C or higher and a moisture swelling coefficient of at least 30 ppm/%. The label layer has an elastic modulus of 2,000 Mpa or higher, a thermal expansion coefficient of 40 ppm/°C or higher, and a moisture swelling coefficient of 30 ppm/% or higher. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种生产率高，防止弯曲的光学信息记录介质。光信息记录媒体至少具有信息记录层; 粘合层; 和透明片材，并且至少在另一面侧的标签层。透明片的弹性模量为2000MPa以上，热膨胀系数为40ppm /℃以上，水分膨胀系数为30ppm /％以上。标签层的弹性模量为2000Mpa以上，热膨胀系数为40ppm /℃以上，水分膨胀系数为30ppm /％以上。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2006147033A Cover sheet for optical recording medium and optical recording medium 有权
标题翻译：光记录介质和光记录介质的封面
公开(公告)号：JP2006147033A
公开(公告)日：2006-06-08
申请号：JP2004334774
申请日：2004-11-18
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： TAKANO HIROAKI , TSUNODA TAKESHI
IPC分类号： G11B7/24
摘要： PROBLEM TO BE SOLVED: To provide a cover sheet for an optical recording medium nearly free from deformation generated when being preserved for a long time under high temperature, high humidity and the like and to provide the optical recording medium. SOLUTION: The cover sheet for the optical recording medium having a protective film on a disk like base film having a center hole is characterized in that difference between the thermal shrinkage ratio of the base film and the thermal shrinkage ratio of the protective film is ≤0.3% when the cover sheet is preserved under the environment of 60°C 10% RH for a week from a state of 23°C 50% RH. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种在高温，高湿度等下长时间保存时几乎没有产生的变形的光学记录介质的覆盖片，并提供光学记录介质。解决方案：在具有中心孔的盘状基膜上具有保护膜的光记录介质用覆盖片的特征在于，基膜的热收缩率与保护膜的热收缩率之差当在23℃，50％RH的状态下，将覆盖片在60℃，10％RH的环境下保存一周时，为≤0.3％。版权所有（C）2006，JPO＆NCIPI

3. 发明专利

JP2005166135A Optical information recording medium 审中-公开
标题翻译：光信息记录介质
公开(公告)号：JP2005166135A
公开(公告)日：2005-06-23
申请号：JP2003401468
申请日：2003-12-01
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： HANAI KAZUKO , TAKANO HIROAKI , TSUNODA TAKESHI
IPC分类号： G11B7/24
摘要： PROBLEM TO BE SOLVED: To provide an optical information recording medium having always stable recording and reproducing characteristics without being affected by long time preservation and running environment. SOLUTION: The optical information recording medium having a recording layer on a substrate and a transparent sheet provided on the recording layer via an adhesive layer is characterized in that the adhesive layer contains an amine compound. The amine compound content in the adhesive layer is preferably 0.02 to 10.0 mass.%. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种具有始终稳定的记录和再现特性的光学信息记录介质，而不受长时间保存和运行环境的影响。解决方案：具有在基板上的记录层的光学信息记录介质和通过粘合剂层设置在记录层上的透明片的特征在于粘合剂层含有胺化合物。粘合剂层中的胺化合物含量优选为0.02〜10.0质量％。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2005038500A Magnetic recording medium 审中-公开
标题翻译：磁记录介质
公开(公告)号：JP2005038500A
公开(公告)日：2005-02-10
申请号：JP2003274092
申请日：2003-07-14
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： INOUE NORIKO , TAKANO HIROAKI
IPC分类号： G11B5/735
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium for high-density recording which is excellent in traveling stability and durability. SOLUTION: In the magnetic recording medium provided with a magnetic layer on one side and a back layer on the opposite side, the back layer contains carbon black and nonmagnetic needle-shape powder, whose Mohs's hardness is at least 5 and not more than 8, at a ratio in weight of 40/60 to 10/90, and polyurethane resin and acryl resin, as a bonding agent, wherein the acryl resin constitutes 10-50% of the total mass of the bonding agents. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供行驶稳定性和耐久性优异的用于高密度记录的磁记录介质。解决方案：在一侧设置有磁性层的磁记录介质和相对侧的背层上，背层含有炭黑和非磁性针状粉末，其莫氏硬度至少为5，而不是更多比例为40/60至10/90的聚氨酯树脂和丙烯酸树脂作为粘合剂，其中丙烯酸树脂占粘合剂总质量的10-50％。版权所有（C）2005，JPO＆NCIPI

5. 发明专利

JP2004334947A Magnetic recording medium 审中-公开
公开(公告)号：JP2004334947A
公开(公告)日：2004-11-25
申请号：JP2003127198
申请日：2003-05-02
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： HARASAWA KEN , TAKANO HIROAKI
IPC分类号： B32B5/16 , G11B5/70 , G11B5/706 , G11B5/714 , G11B5/738 , G11B5/78 , G11B5/842
CPC分类号： G11B5/714 , G11B5/70 , G11B5/70605 , G11B5/70678 , G11B5/842 , Y10T428/257
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium for high density recording wherein electromagnetic conversion characteristics, in particular high density recording characteristics, are largely improved. SOLUTION: In the magnetic recording medium prepared by forming a magnetic layer mainly made of ferromagnetic powder and binder on a support, the ferromagnetic powder is hexagonal ferrite powder having an average plate diameter of 15 to 40 nm, the vertical component of the squareness ratio SQ of the magnetic layer is 0.1 to 0.55, the specific surface area and a total pore volume of the magnetic recording medium itself by a nitrogen adsorption method are respectively 0.1 to 50 m 2 /g and 0.001 to 1 ml/g, and the thickness of the magnetic layer is 0.02 to 0.3 μm. This provides the magnetic recording medium for high density recording wherein an S/N is dramatically excellent even when an MR head is combined. COPYRIGHT: (C)2005,JPO&NCIPI

6. 发明专利

JP2004334946A Magnetic recording medium 审中-公开
公开(公告)号：JP2004334946A
公开(公告)日：2004-11-25
申请号：JP2003127197
申请日：2003-05-02
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： HARASAWA KEN , TAKANO HIROAKI
IPC分类号： G11B5/70 , G11B5/706 , G11B5/714
CPC分类号： G11B5/70 , G11B5/70678 , G11B5/714 , Y10T428/257
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium which has improved electromagnetic conversion characteristics and is suitable for an MR head in particular. SOLUTION: In this magnetic recording medium provided with a magnetic layer including ferromagnetic powder on a support, the magnetic layer has a magnetization reversal volume of 3,000 to 15,000 nm 3 , a thickness of 0.01 to 0.15 μm, a perpendicular squareness ratio of ≥0.7, and a surface electric resistance Rs of ≤10 8 Ω/sq. The magnetic recording medium is excellent in an electromagnetic conversion characteristic. COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004213828A Magnetic recording medium 审中-公开
公开(公告)号：JP2004213828A
公开(公告)日：2004-07-29
申请号：JP2003002329
申请日：2003-01-08
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： KATO KAZUO , TAKANO HIROAKI
IPC分类号： G11B5/70 , G11B5/706 , G11B5/708 , G11B5/714
CPC分类号： G11B5/70 , G11B5/7085 , G11B5/714 , G11B5/735 , G11B5/738
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium for high-density recording which is excellent in an electromagnetic transducing characteristic, decreased in MR head wearing, and increased in scratch-resistance.
SOLUTION: A magnetic recording medium provided with at least one magnetic layer containing ferromagnetic metal powder and a binder on a non-magnetic supporting body and having surface roughness of 3nm or less, is characterized in that the ferromagnetic metal powder contained in the magnetic layer has an average major axial length of 30-100nm, and saturation magnetization σs of 70-100(Am
2 /kg), and contains therein SiO
2 particles of 5-30nm in average size.
COPYRIGHT: (C)2004,JPO&NCIPI

8. 发明专利

JP2004030794A Magnetic recording mediummagnetic recording medium 审中-公开
公开(公告)号：JP2004030794A
公开(公告)日：2004-01-29
申请号：JP2002186218
申请日：2002-06-26
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： TAKANO HIROAKI , MATSUBAGUCHI SATOSHI
IPC分类号： G11B5/708
摘要： PROBLEM TO BE SOLVED: To provide a magnetic recording medium having excellent electromagnetic conversion characteristics, wear resistance, and repetition durability.
SOLUTION: When the magnetic recording medium provided with at least one kind of magnetic layer formed by dispersing ferromagnetic powder in a bonding agent on a non-magnetic supporting body contains an abrasive of Mohs' hardness 9 or higher by A parts by weight and an abrasive of Mohs' hardness 6 to 8 by B parts by weight, the magnetic recording medium satisfies a relation of 5≤(4×A+B)≤20 with respect to a magnetic substance of 100 parts by weight.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2006085771A Optical recording medium 审中-公开
标题翻译：光学记录介质
公开(公告)号：JP2006085771A
公开(公告)日：2006-03-30
申请号：JP2004267093
申请日：2004-09-14
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： INOUE NORIKO , TAKANO HIROAKI
IPC分类号： G11B7/24 , G03H1/02 , G11B23/03
CPC分类号： G11B7/246 , B82Y10/00 , G11B7/24044 , G11B7/245 , G11B7/2463 , G11B7/2467 , G11B7/247 , G11B7/2531 , G11B7/2533 , G11B7/2534 , G11B7/2535 , G11B7/2536 , G11B7/2538 , G11B7/2539 , G11B2007/24612
摘要： PROBLEM TO BE SOLVED: To enhance light shielding properties in a period until information is recorded and to make it possible to perform stable optical information recording. SOLUTION: An optical recording medium provided with an optical recording body provided with an optical information recording layer in which information is recorded by recording light and which has ≥100 μm thickness and a housing body housing the optical recording body between two light transmissive substrates having ≥50 μm thickness is characterized in that the housing body is formed by using a light shielding material having ≤1% transmittance of UV light and visible light. COPYRIGHT: (C)2006,JPO&NCIPI

10. 发明专利

JP2006065963A Optical information recording medium 审中-公开
标题翻译：光信息记录介质
公开(公告)号：JP2006065963A
公开(公告)日：2006-03-09
申请号：JP2004247801
申请日：2004-08-27
申请人： Fuji Photo Film Co Ltd , 富士写真フイルム株式会社
发明人： TAKANO HIROAKI , INOUE NORIKO
IPC分类号： G11B7/24
摘要： PROBLEM TO BE SOLVED: To provide an optical information recording medium suitable for increasing the capacity and the recording density, wherein the warpage or the deformation due to the temperature and the humidity of the environment is suppressed. SOLUTION: In the optical information recording medium, an optical information recording layer for three-dimensionally recording optical information is interposed between two light transmitting substrates. The two light transmitting substrates are formed of the materials having substantially the same temperature and hygroscopic expansion coefficients. COPYRIGHT: (C)2006,JPO&NCIPI

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