专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

61. 发明专利

JP2003115112A WRITE-ONCE TYPE OPTICAL RECORDING MEDIUM 审中-公开
公开(公告)号：JP2003115112A
公开(公告)日：2003-04-18
申请号：JP2001305293
申请日：2001-10-01
申请人： SONY CORP
发明人： ABIKO TORU , HAYASHIBE KAZUYA
IPC分类号： B41M5/26 , G11B7/0045 , G11B7/24 , G11B7/243
摘要： PROBLEM TO BE SOLVED: To provide a phase change recording medium which is not rewritable even if a transfer rate is increased in order to attain a high density recording, in a write-once type optical recording medium wherein a phase change type optical recording layer 2 which shows a crystal phase in an unrecorded state and is made amorphous by pulse irradiation to form a recording pit and a light transmission protective layer 4 are successively formed on a disk substrate 1. SOLUTION: A recording layer 7 of the phase change type optical recording layer 2 is formed by using a phase change material of an antimony Sb-tellurium Te system and the ratio Sb/Te of antimony Sb to tellurium Te is

62. 发明专利

JP2002092955A OPTICAL RECORDING MEDIUM AND PRODUCING METHOD THEREOF 失效
公开(公告)号：JP2002092955A
公开(公告)日：2002-03-29
申请号：JP2000278151
申请日：2000-09-13
申请人： SONY CORP
发明人： ABIKO TORU
IPC分类号： G11B7/24 , G11B7/254 , G11B7/257 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To assure a high reliability by suppressing the occurrence of corrosion and preventing the defective reproducing in an optical recording medium in which an optical recording layer and a light transmission protecting layer are laminated on a substrate. SOLUTION: The outer peripheral edge in radial direction of an adhesive layer 8 is set to be >=0.5 mm on the outer periphery side from the outer peripheral edge of the optical recording layer 7. The outer peripheral edge in radial direction of the adhesive layer 8 is set to be in the range of

63. 发明专利

JP2002092945A OPTICAL RECORDING MEDIUM AND ITS PRODUCTION METHOD 失效
公开(公告)号：JP2002092945A
公开(公告)日：2002-03-29
申请号：JP2000278149
申请日：2000-09-13
申请人： SONY CORP
发明人： ABIKO TORU , SHIMOMUKAI HITOSHI , NAKANO ATSUSHI
IPC分类号： G11B7/24 , G11B7/253 , G11B7/254 , G11B7/257 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To secure high reliability by suppressing the occurrence of secular change to prevent a reproduction defect in an optical recording medium where a optical recording layer and a light transmissive protection layer are laminated on a support baseboard. SOLUTION: A reflection layer 3, a first dielectric layer 4, a recording layer 5 and a second dielectric layer 6 are successively laminated on a non-magnetic disk baseboard 2 so as to obtain the optical recording layer 7. The light transmissive protection layer 9 is arranged through an adhesive layer 8 on one main surface of the disk baseboard 2 where the optical recording layer 7 is formed so that an optical disk 1 is constituted. In the optical disk 1, the material of the disk baseboard 2 and the material of the light transmissive protection layer 9 are decided so that a difference between the water absorption of the disk baseboard 2 and that of the protection layer 9 becomes

64. 发明专利

JP2001357558A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2001357558A
公开(公告)日：2001-12-26
申请号：JP2000296189
申请日：2000-09-28
申请人： SONY CORP
发明人： ABIKO TORU , TAKASE FUMINORI , SHIMOMUKAI HITOSHI
IPC分类号： B41M5/26 , G11B7/007 , G11B7/24 , G11B7/243 , G11B7/258
摘要： PROBLEM TO BE SOLVED: To increase the recording capacity while suppressing deterioration in jitters or decrease in the modulation degree and keeping enough recording characteristics. SOLUTION: A first dielectric film 3, phase transition recording film 4, second dielectric film 5, reflection film 6 and protective film 7 are successively formed on a disk substrate 2 having lands and grooves on one principal face 2a and wobbles. The recording film 4 consists of a GeInSbTe alloy and the reflection film 6 consists of a AgPdCu alloy or AlCu alloy. The composition ratio of the GeInSbTe alloy is controlled to 1 to 8 wt.% Ge, 2 to 6 wt.% In, 2.2 to 3.0 ratio of Sb/Te, and the composition of the AgPdCu alloy is controlled to 0.9 to 1.5 wt.% of Pd, 0.9 to 1.1 wt.% of Cu, and the content of the Cu in the AlCu alloy is controlled to

65. 发明专利

JP2001250269A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2001250269A
公开(公告)日：2001-09-14
申请号：JP2000062282
申请日：2000-03-07
申请人： SONY CORP
发明人： ABIKO TORU , SHIMOMUKAI HITOSHI , KURODA YUJI , NAKAMURA MANAMI
IPC分类号： G11B7/254 , G11B7/24 , G11B7/257 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To inhibit the corrosion of an optical recording layer constituting an optical recording medium. SOLUTION: The concentration of residual chlorine ions in a light transmissive protective layer 6 formed on a side irradiated with light for recording and reproduction is reduced to

66. 发明专利

JPH09212938A MAGNETO-OPTICAL RECORDING APPARATUS 失效
公开(公告)号：JPH09212938A
公开(公告)日：1997-08-15
申请号：JP1595896
申请日：1996-01-31
申请人： SONY CORP
发明人： TOYODA KIYOSHI , SHIROICHI YOSHIRO , ABIKO TORU
IPC分类号： G11B11/10 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To obtain an apparatus in which an error due to the jitters is not generated in a reproducing operation and which can record a good information signal by a method wherein a semiconductor laser and a light-emitting-output control circuit are provided and the servo band of the light-emitting-output control circuit is specified. SOLUTION: A reference voltage VR is supplied, via a resistance R1 having a prescribed resistance value, to the inverting input terminal (-) of a comparator IC1. The inverting input terminal (-) of the comparator IC1 is connected, via a capacitor C1, to the output terminal of the comparator IC1, and it is connected, via a resistance R4, to the output terminal of the comparator IC1. A prescribed voltage is supplied to the noninverting terminal (+) of the comparator IC1 via a photodiode PD for a front APC, and the noninverting terminal is grounded via a resistance R3. The output terminal of the comparator IC1 is connected, via a resistance R5 having a prescribed resistance value, to the base terminal of a PNP transistor TR1.

67. 发明专利

JPH06124491A MAGNETO-OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH06124491A
公开(公告)日：1994-05-06
申请号：JP1283293
申请日：1993-01-28
申请人： SONY CORP
发明人： IKEDA ETSURO , TANAKA FUJI , IIDA KATSUHIRO , ABIKO TORU , YOSHIKAWA MASAHIRO
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To restrain that the characteristic of the title recording medium is deteriorated and to enhance the external magnetic field sensitivity of the recording medium by a method wherein a region containing oxygen is formed between a recording layer and a dielectric layer or a reflection layer and the region containing oxygen of the recording layer is set to a specific range or lower. CONSTITUTION:In an Auger profile in the depth direction, the average peak height of Si is found when a dielectric layer is composed of Si3N4, the average peak height of Zn is found when it is composed of ZnS, and a position in which respective peaks are 1/2 of the average peak height is found on the side of the interface with a recording layer. The average peak height of a transition metal for an RE-TM magnetic film is found also on the side of the recording layer, and a position in which the peak of the transition metal becomes 1/2 of the average peak height is found on the side of the interface with the dielectric layer, and the middle point of the two positions is used as the interface. In addition, a region containing oxygen. i.e., an intermediate layer, is formed between the recording layer and the dielectric layer or a reflection layer. However, when the intermediate layer creeps deeply into the recording layer, the characteristic of the RE-TM magnetic film of the recording layer is spoiled. Consequently, it is arranged that the foot of the signal of oxygen in the Auger profile does not creep into the recording layer at 150Angstrom or higher.

68. 发明专利

JPH0476844A MAGNETIC FIELD MODULATION TYPE OVERWRITE MAGNETIC HEAD AND MANUFACTURE OF THE HEAD 失效
公开(公告)号：JPH0476844A
公开(公告)日：1992-03-11
申请号：JP19114890
申请日：1990-07-19
申请人： SONY CORP
发明人： IWABUCHI KIETSU , ABIKO TORU , WATARI HIROSHI
IPC分类号： G11B11/10 , G11B5/02 , G11B11/105
摘要： PURPOSE:To prevent disconnection caused by the heat of a coil and to prolong the service life of a head itself by laminating the two layers of coils and forming a heat conduction layer between the first layer coil and the second layer coil. CONSTITUTION:The several turns of thin film coils 2a composed of copper, etc., are formed on a substrate composed of ferrite, etc., and an insulating film 3a, radiation film 4 and insulating film 3b are successively laminated on the coil 2a. Further, a thin film coil 2b is formed on the insulating film 3b, and an insulating film 3c, common terminal 5c and insulating film 3d are formed on the coil 2b. The radiation film 4 formed between the insulating films 3a and 3b has insulation ability, is composed of a material with high heat conductivity and efficiently radiates the heat of the coils 2a and 2b to be generated by electrification. Therefore, the thin film coils 2a and 2b can be prevented from being disconnected by the heat, and the service life of the head is prolonged.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式