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1. 发明授权

US5079060A Optical recording media 失效
公开(公告)号：US5079060A
公开(公告)日：1992-01-07
申请号：US427493
申请日：1989-10-27
申请人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Takeshi Minoda , Akira Todo
发明人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Takeshi Minoda , Akira Todo
IPC分类号： G11B7/243 , G11B7/2534 , G11B7/2538
CPC分类号： G11B7/243 , G11B7/2538 , G11B2007/24316 , G11B2007/24328 , G11B7/2534 , Y10S428/913 , Y10S430/146
摘要： Optical recording media disclosed herein are excellent in recording sensitivity as well as in the adhesion of the substrate to the recording layer, said substrate consisting of a random copolymer of ethylene and a cycloolefin and having a specific structure.

2. 发明授权

US5166034A Optical recording media and process for preparing same 失效
标题翻译：光学记录介质及其制备方法
公开(公告)号：US5166034A
公开(公告)日：1992-11-24
申请号：US691827
申请日：1991-04-26
申请人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Akira Todo , Takeshi Minoda
发明人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Akira Todo , Takeshi Minoda
IPC分类号： G11B7/243 , G11B7/253 , G11B7/2531 , G11B7/2532 , G11B7/2533
CPC分类号： G11B7/243 , G11B2007/24306 , G11B2007/24316 , G11B2007/24328 , G11B7/2531 , G11B7/2532 , G11B7/2533
摘要： The optical recording media disclosed herein comprises a substrate and a recording layer formed thereon, wherein the recording layer is irradiated with beam of energy to form thereon bits corresponding to given pieces of information and thereby record the pieces of information. The recording layer comprising Te, Cr, C and H, the proportion of Cr contained in said recording layer, based on all atoms constituting the recording layer, is 0.1-40 atom % and that of C contained in said recording layer is 0.1-40 atom %. In another aspect, the proportion of Cr contained in said recording layer, based on the sum total of Te and Cr atoms present in said recording layer, is 0.1-60 atom %, and the proportion, based on the sum total of Te, Cr and C atoms present in said recording layer, of C is 0.1-40 atom %. According to the optical recording media as disclosed above, the recording layer improves in oxidation resistance and long duration of life of the optical recording media can be expected, because the recording layer comprising Te, Cr, C and H. In this connection, the distribution of C contained in the recording layer is not always uniform, and C may be distributed in the recording layer so that the content of C becomes smaller in the direction receding from the substrate side.

3. 发明授权

US5061597A Optical recording media and process for preparing same 失效
标题翻译：光记录介质及其制备方法
公开(公告)号：US5061597A
公开(公告)日：1991-10-29
申请号：US566039
申请日：1990-08-13
申请人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Akira Todo , Takeshi Minoda
发明人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Akira Todo , Takeshi Minoda
IPC分类号： G11B7/243
CPC分类号： G11B7/243 , G11B2007/24306 , G11B2007/24316 , G11B2007/24328 , G11B7/2533 , G11B7/2572 , G11B7/2578 , Y10S430/146 , Y10S430/165
摘要： The optical recording media disclosed herein comprises a substrate and a recording layer formed thereon, wherein the recording layer is irradiated with beam of energy to form thereon bits corresponding to given pieces of information and thereby record the pieces of information. The recording layer comprises Te, Cr, C and H, the proportion of Cr contained in said recording layer, based on all atoms constituting the recording layer, is 0.1-40 atom % and that of C contained in said recording layer is 0.1-40 atom %. In another aspect, the proportion of Cr contained in said recording layer, based on the sum total of Te and Cr atoms present in said recording layer, is 0.1-60 atom %, and the proportion, based on the sum total of Te, Cr and C atoms present in said recording layer, of C is 0.1-40 atom %. According to the optical recording media as disclosed above, the recording layer improves in oxidation resistance and long duration of life of the optical recording media can be expected, because the recording layer comprising Te, Cr, C and H. In this connection, the distribution of C contained in the recording layer is not always uniform, and C may be distributed in the recording layer so that the content of C becomes smaller in the direction receding from the substrate side.
摘要翻译：本文公开的光记录介质包括基板和形成在其上的记录层，其中记录层用能量束照射以在其上形成与给定条信息对应的位，从而记录信息。记录层包括Te，Cr，C和H，基于构成记录层的所有原子，所述记录层中包含的Cr的比例为0.1-40原子％，并且所述记录层中包含的C的比例为0.1-40 原子％。在另一方面，所述记录层中所含的Cr的比例，基于存在于所述记录层中的Te和Cr原子的总和为0.1-60原子％，并且所述比例基于Te，Cr的总和存在于所述记录层中的C原子为C为0.1-40原子％。根据如上所述的光记录介质，由于记录层包括Te，Cr，C和H，所以记录层的抗氧化性能提高，光记录介质的使用寿命可以延长，因此，分布记录层中所含的C不总是均匀的，并且C可以分布在记录层中，使得C的含量在从基板侧退出的方向上变小。

4. 发明授权

US4994354A Optical recording media 失效
标题翻译：光记录媒体
公开(公告)号：US4994354A
公开(公告)日：1991-02-19
申请号：US427509
申请日：1989-10-27
申请人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Takeshi Minoda , Akira Todo
发明人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Takeshi Minoda , Akira Todo
IPC分类号： G11B7/243 , G11B7/253 , G11B7/2538
CPC分类号： G11B7/2538 , G11B7/243 , G11B7/253 , G11B2007/24306 , G11B2007/24316 , G11B2007/24328 , Y10S430/146
摘要： Optical recording media disclosed herein are excellent in recording sensitivity as well as in the adhesion of the substrate to the recording layer, said substrate consisting of a random copolymer of ethylene and a cycloolefin and having a specific structure.

5. 发明授权

US4960627A Optical recording media and process for preparing same 失效
标题翻译：光记录介质及其制备方法
公开(公告)号：US4960627A
公开(公告)日：1990-10-02
申请号：US340692
申请日：1989-04-20
申请人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Akira Todo
发明人： Hisaharu Toibana , Mitsuyuki Kuroiwa , Akira Todo
IPC分类号： G11B7/243 , G11B7/257 , G11B7/2578
CPC分类号： G11B7/2578 , G11B7/243 , G11B2007/24306 , G11B2007/24316 , Y10S428/913 , Y10S430/146 , Y10T428/24917 , Y10T428/31678
摘要： Optical recording media disclosed herein comprise a substrate and a recording layer formed thereon, wherein the recording layer is irradiated with beam of energy to form thereon bits corresponding to given pieces of information and thereby record the pieces of information. The recording layer comprises Te and Cr, the proportion of Cr contained in said recording layer being 0.1-10 atom % based on the total atoms constituting the recording layer. Processes for preparing the optical recording media disclosed above comprise forming the recording layer comprising Te and Cr on the substrate and then subjecting the thus formed recording layer to heat treatment. Oxidation resistance of said recording layer is improved and accordingly the optical recording medium comprising this recording layer can be expected to prolong its duration of life. This recording layer has excellent recording sensitivity, because the content of Cr in said recording layer is present to 0.1-10 atom %, which is lower than the Cr content in conventional recording layers. According to the process for preparing the optical recording media disclosed above, the resulting optical recording medium further improves in recording sensitivity, notwithstanding that the optical recording medium obtained is improved in durability. Moreover, it becomes possible to enlarge the recording margin.

6. 发明授权

US5290877A Information recording medium and adhesive composition therefor 失效
标题翻译：信息记录介质及其粘合剂组成
公开(公告)号：US5290877A
公开(公告)日：1994-03-01
申请号：US964821
申请日：1992-10-22
申请人： Hideo Yamaoka , Mitsuyuki Kuroiwa , Hirosi Nanbu , Akira Todo
发明人： Hideo Yamaoka , Mitsuyuki Kuroiwa , Hirosi Nanbu , Akira Todo
IPC分类号： G11B7/24015 , G11B7/24024 , C08L33/06
CPC分类号： G11B7/24024 , G11B7/24015 , Y10S428/913 , Y10S430/146 , Y10T428/24777 , Y10T428/2982 , Y10T428/31507 , Y10T428/31844
摘要： An information recording medium formed by adhering, with an adhesive composition, two disk substrates to each other, at least one of the two disk substrates having a recording layer on at least one surface of a transparent resin substrate thereof and the adhesive composition comprising(1) the following components:(A) an .alpha.-olefin polymer,(B) an ethylene/(meth)acrylate copolymer,(C) a styrene-type polymer, and(D) a tackifier provided that at least one of the components (A) to (D) is modified with an unsaturated carboxylic acid or a derivative thereof, or(2) the following components:(A) an .alpha.-olefin polymer,(C) a styrene-type polymer,(D) a tackifier, and(E) fine filler particles.
摘要翻译：一种信息记录介质，其通过粘合剂组合物将两个盘基板彼此粘合，所述两个盘基片中的至少一个在其透明树脂基板的至少一个表面上具有记录层，所述粘合剂组合物包含（1 ）以下组分：（A）（α-）α-烯烃聚合物，（B）乙烯/（甲基）丙烯酸酯共聚物，（C）苯乙烯类聚合物和（D）增粘剂，其中至少一种组分（A）至（D）用不饱和羧酸或其衍生物改性，或（2）以下组分：（A）（α） - 烯烃聚合物，（C）苯乙烯型聚合物，（D ）增粘剂，和（E）细填料颗粒。

7. 发明授权

US5188875A Information recording medium and adhesive composition therefor 失效
标题翻译：信息记录介质及其粘合剂组合物
公开(公告)号：US5188875A
公开(公告)日：1993-02-23
申请号：US571874
申请日：1990-08-24
申请人： Hideo Yamaoka , Mitsuyuki Kuroiwa , Hirosi Nanbu , Akira Todo
发明人： Hideo Yamaoka , Mitsuyuki Kuroiwa , Hirosi Nanbu , Akira Todo
IPC分类号： G11B7/24015 , G11B7/24024
CPC分类号： G11B7/24024 , G11B7/24015 , Y10S428/913 , Y10S430/146 , Y10T428/24777 , Y10T428/2982 , Y10T428/31507 , Y10T428/31844
摘要： An information recording medium formed by adhering, with an adhesive composition, two disk substrates to each other, at least one of the two disk substrates having a recording layer on at least one surface of a transparent resin substrate thereof and the adhesive composition comprising(1) the following components:(A) an .alpha.-olefin polymer,(B) an ethylene/(meth)acrylate copolymer,(C) a styrene-type polymer, and(D) a tackifier provided that at least one of the components (A) to (D) is modified with an unsaturated carboxylic acid or a derivative thereof, or(2) the following components:(A) an .alpha.-olefin polymer,(C) a styrene-type polymer,(D) a tackifier, and(E) fine filler particles.

8. 发明授权

US5263016A Information recording discs 失效
标题翻译：信息记录盘
公开(公告)号：US5263016A
公开(公告)日：1993-11-16
申请号：US963025
申请日：1992-10-19
申请人： Takeshi Minoda , Akira Todo , Toshio Kimura , Masayoshi Kurisu
发明人： Takeshi Minoda , Akira Todo , Toshio Kimura , Masayoshi Kurisu
IPC分类号： G11B7/24 , G11B23/00 , G01D15/34 , G11B7/26
CPC分类号： G11B7/24097 , G11B23/0035 , Y10S430/146
摘要： An information recording disc including a plurality of disc substrates (2), at least one of which has a recording medium containing layer (1), two pieces of hubs mounted over the center hole of said disc substrates on both sides thereof, each hub having a portion to be inserted into said center hole and a flange portion to cover a portion of said disc substrate in the vicinity of said center hole, and an adhesive layer (13, 14) formed between said hubs and said disc substrates and between said two hubs. An adhesive layer (7) laminates the substrates (2a, 2b) to one another.
摘要翻译：一种信息记录盘，包括多个盘基片（2），其中至少一个具有记录介质容纳层（1），两片轮毂安装在其两侧的所述光盘基片的中心孔上，每个轮毂具有插入所述中心孔的部分和在所述中心孔附近覆盖所述盘基片的一部分的凸缘部分，以及形成在所述毂和所述盘基片之间以及所述两个中心孔之间的粘合剂层（13,14）枢纽粘合层（7）将基板（2a，2b）彼此叠合。

9. 发明授权

US5020207A Process for producing magnetic hub 失效
标题翻译：磁性集线器生产工艺
公开(公告)号：US5020207A
公开(公告)日：1991-06-04
申请号：US492385
申请日：1990-03-09
申请人： Takeshi Minoda , Akira Todo , Toshio Kimura , Masayoshi Kurisu
发明人： Takeshi Minoda , Akira Todo , Toshio Kimura , Masayoshi Kurisu
IPC分类号： G11B7/26 , B29C45/14 , G11B23/00
CPC分类号： G11B23/0035 , B29C45/14065 , B29C45/14778 , B29K2705/00 , Y10S29/029 , Y10T29/4949 , Y10T29/49906 , Y10T29/49986
摘要： A process for producing a magnetic hub for an optical disc which is fixed to the spindle of a disc drive by means of a magnetic clamp system, which process comprises positioning and setting an annular metal plate composed of a ferromagnetic substance having burrs on one side thereof produced by punching in a mold and then injecting a resin into the mold.

10. 发明授权

US4943611A Resin composition for spacers of information recording disc 失效
标题翻译：信息记录盘用间隔物用树脂组合物
公开(公告)号：US4943611A
公开(公告)日：1990-07-24
申请号：US224685
申请日：1988-07-27
申请人： Akira Todo , Toshio Kimura , Takeshi Minoda , Masayoshi Kurisu
发明人： Akira Todo , Toshio Kimura , Takeshi Minoda , Masayoshi Kurisu
IPC分类号： C08L23/00 , C08K3/36 , C08K5/01 , G11B7/24
CPC分类号： G11B7/24015 , C08K3/36
摘要： A resin composition for spacers of an information recording disc which comprises: (A) a random copolymer of ethylene and at least one cycloolefin having an intrinsic viscosity [.eta.] of from 0.05 to 10 dl/g, as measured in decalin at a temperature of 135.degree. C., and (B) from 0.01 to 5 parts by weight, based on 100 parts by weight, of said copolymer A, of an inorganic particles such as titania and silica having a particle size of not more than 300 .mu.m. Spacers made of the composition described herein can be welded to disc substrates within a shortened period of ultrasonic vibration to produce an information recording disc having a reduced warp angle.

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