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121. 发明专利

JP2007141455A Information recording medium 审中-公开
标题翻译：信息记录媒体
公开(公告)号：JP2007141455A
公开(公告)日：2007-06-07
申请号：JP2007052800
申请日：2007-03-02
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MIYAMOTO MAKOTO , USHIYAMA JUNKO , ANDO KEIKICHI , ANZAI YUMIKO , HIROTSUNE AKEMI , TERAO MOTOYASU , NISHIDA TETSUYA , MIYAUCHI YASUSHI , MIYAMOTO MITSUHIDE
IPC分类号： G11B7/24 , G11B7/243 , G11B7/254 , G11B7/257 , G11B7/258
摘要： PROBLEM TO BE SOLVED: To provide an absolutely imperative technique for reducing cross-erase when performing a high density recording so that a track pitch is ≤70% of a laser beam spot diameter in an information recording medium used for recording of information through radiation of an energy beam. SOLUTION: An optical disk 15 has a lower protective layer 2: (ZnS) 80 (SiO 2 ) 20 (100 nm), a lower interface layer 12: Cr 2 O 3 (5 nm), a recording layer 3: Ag 6 Ge 16 Sb 22 Te 55 phase transition recording layer (10 nm), an upper interface layer 13 (5 nm), a heat diffusion control layer 4: (ZnS) 80 (SiO 2 ) 20 (140 nm), a heat buffer layer 14: Cr 40 (Cr 2 O 3 ) 60 (35 nm), and a heat diffusion layer 5: Al (80 nm), on a substrate 1 made of a polycarbonate. Even when the optical disk 15 is used for high density recording wherein the track pitch is 70% of the laser beam spot diameter or less, cross-erase is not produced. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了在执行高密度记录时提供一种减少交叉擦除的绝对必要技术，使得在用于记录信息的信息记录介质中轨道间距≤70％的激光束光点直径通过能量束的辐射。解决方案：光盘15具有下保护层2：（ZnS） 80（SiO 2 ） 20 （100nm），下界面层12：Cr 3 SB 3（5nm），记录层3：Ag 6＆lt; SB 16＆（10nm），上界面层13（5nm），热扩散控制层4（ZnS）），相变转变记录层（10nm）（SiO 2 ） 20 （140nm），加热缓冲层14：Cr <40> （35nm），以及热扩散层5：Al（80nm）在由聚碳酸酯。即使当光盘15用于高密度记录时，其中轨道间距是激光束光点直径的70％或更小，则不会产生交叉擦除。版权所有（C）2007，JPO＆INPIT

122. 发明专利

JP2006221812A Information recording medium 审中-公开
标题翻译：信息记录媒体
公开(公告)号：JP2006221812A
公开(公告)日：2006-08-24
申请号：JP2006135620
申请日：2006-05-15
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MIYAMOTO MAKOTO , USHIYAMA JUNKO , MIYAUCHI YASUSHI , UMEZAWA KAZUYO , KASHIWAKURA AKIRA , TAMURA NORIHITO
IPC分类号： G11B7/24 , G11B7/243
摘要： PROBLEM TO BE SOLVED: To provide an information recording medium which can make CAV recording, wherein the reproduced signals does not deteriorate even after rewriting data for 100,000 times or more. SOLUTION: This information recording medium has a base plate, and a recording layer to record information with phase changes made by irradiation with a laser beam. Further, it has a recording layer which contains at least Ge, Sb, Te and Bi and that contains Bi in the amount of 1-9%. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供可进行CAV记录的信息记录介质，即使在重写数据100,000次以上之后，再现信号也不会劣化。解决方案：该信息记录介质具有基板和用激光束照射而记录具有相位变化的信息的记录层。此外，它具有至少含有Ge，Sb，Te和Bi并且含有1-9％的Bi的记录层。版权所有（C）2006，JPO＆NCIPI

123. 发明专利

JP2006216231A Information recording medium 审中-公开
标题翻译：信息记录媒体
公开(公告)号：JP2006216231A
公开(公告)日：2006-08-17
申请号：JP2006135615
申请日：2006-05-15
申请人： Hitachi Maxell Ltd , 日立マクセル株式会社
发明人： MIYAMOTO MAKOTO , USHIYAMA JUNKO , MIYAUCHI YASUSHI , UMEZAWA KAZUYO , KASHIWAKURA AKIRA , TAMURA NORIHITO
IPC分类号： G11B7/241 , G11B7/24 , G11B7/243 , G11B7/254 , G11B7/257
摘要： PROBLEM TO BE SOLVED: To provide an information recording medium that is capable of CAV recording and does not cause deterioration in reproduction signals even after multiple rewriting for approximately 100,000 times. SOLUTION: In the information recording medium, having a substrate and a recording layer for recording information by a phase change reaction by the application of laser beams, a first interface layer containing at least one element among Bi, Sn, and Pb is provided in contact with the recording layer, and a first protective layer containing Sn and oxygen is provided at a side opposite to the recording layer of the first interface layer. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供能够进行CAV记录的信息记录介质，即使在多次重写约100,000次之后也不会导致再现信号的劣化。解决方案：在信息记录介质中，具有通过施加激光束通过相变反应记录信息的基板和记录层，包含Bi，Sn和Pb中的至少一种元素的第一界面层是设置在与记录层接触的位置，并且在与第一界面层的记录层相对的一侧设置包含Sn和氧的第一保护层。版权所有（C）2006，JPO＆NCIPI

124. 发明专利

JP2002237002A INFORMATION RECORDING MEDIUM, AND METHOD FOR RECORDING AND READING INFORMATION USING THE SAME 审中-公开
公开(公告)号：JP2002237002A
公开(公告)日：2002-08-23
申请号：JP2001392929
申请日：2001-12-25
申请人： HITACHI MAXELL
发明人： TERAO MOTOYASU , NAKAMURA KIMIO , MIYAMOTO JIICHI , AWANO HIROYUKI , NIIHARA TOSHIO , HOSOE YUZURU , ANDO KEIKICHI , MIYAUCHI YASUSHI
IPC分类号： G11B11/105 , G11B5/02 , G11B7/005 , G11B11/115
摘要： PROBLEM TO BE SOLVED: To realize an information recording medium capable of performing the high-density recording of a pitch smaller than that of a wavelength of light and to provide a method for recording and reading information. SOLUTION: In the information recording medium on which information is recorded by energy beams or magnetic fields such as a laser beam and an electron ray, and the method for recording and reading the information, a bubble which can move in the direction of a recording track without irradiation of at least a kind of energy beam such as an air bubble, a liquid bubble and a magnetic bubble, is created. The irradiation or the application of the energy beam or the magnetic field to a recording medium in which the size of a bubble becomes large by the irradiation of an energy beam or a magnetic field for reading, is performed while moving the position of the energy beam or the magnetic field on the recording medium. Recording is performed by producing or expanding bubbles and the bubbles are stored by reducing the size of the bubbles after the irradiation or application of the energy beam or the magnetic field. The presence and the position of the bubble are detected and read by expanding the bubble in the place where the irradiation or the application of the energy beam or the magnetic field for reading is performed.

125. 发明专利

JP2001143260A INFORMATION RECORDING AND REPRODUCING METHOD AND DISK USED FOR IT 失效
公开(公告)号：JP2001143260A
公开(公告)日：2001-05-25
申请号：JP31902999
申请日：1999-11-10
申请人： HITACHI LTD
发明人： MIYAUCHI YASUSHI , SHIMANO TAKESHI , SAGA HIDEKI
IPC分类号： G11B7/004 , G11B19/02
摘要： PROBLEM TO BE SOLVED: To settle a loading method which stably floats an optical head in proximity field recording using the optical head on which an SIL(solid immersion lens) is mounted. SOLUTION: A disk 2 provided with an area 1 for floating is used, and the optical head on which the SIL is mounted is moved to an objective place in a recording and reproducing area 3 to perform recording and reproducing after being floated in the area 1 for floating.

126. 发明专利

JP2000222734A INFORMATION RECORDING METHOD 失效
公开(公告)号：JP2000222734A
公开(公告)日：2000-08-11
申请号：JP2000048908
申请日：2000-02-21
申请人： HITACHI LTD
发明人： SHINDO HIDEHIKO , MIYAUCHI YASUSHI , MIYAMOTO MITSUHIDE , MAEDA TAKESHI , MINEMURA HIROYUKI , TODA TAKESHI
IPC分类号： G11B7/0045 , G11B7/006 , G11B7/007 , G11B7/125 , G11B7/1267
摘要： PROBLEM TO BE SOLVED: To record information on a recording medium which is put into a first condition by energy beams having a first power level and into a second condition by energy beams having a second power level that is higher than the first power level. SOLUTION: Information is recorded on a recording medium by relatively moving energy beams and the medium, irradiating the medium with the beams and forming the first and the second conditions with a prescribed length and a prescribed interval on the medium. Energy beams having four power levels (first to fourth power levels) are used. Information is recorded while changing the second power level to x times and the first, the third and the fourth power levels to y times. The information thus recorded is reproduced and reproducing jitter is observed. The magnification factors x and y are adjusted so that the value of the reproducing jitter becomes not more than a prescribed value. Thus, information is stably and reliably recorded on the recording medium at all times.

127. 发明专利

JP2000222733A INFORMATION RECORDING METHOD, INFORMATION RECORDING MEDIUM AND INFORMATION RECORDER 失效
公开(公告)号：JP2000222733A
公开(公告)日：2000-08-11
申请号：JP28634199
申请日：1999-10-07
申请人： HITACHI LTD
发明人： SHINDO HIDEHIKO , MIYAUCHI YASUSHI , MIYAMOTO MITSUHIDE , MAEDA TAKESHI , MINEMURA HIROYUKI , TODA TAKESHI
IPC分类号： G11B7/0045 , G11B7/125
摘要： PROBLEM TO BE SOLVED: To attain the accurate recording to improve the density by recording the information on a recording medium while changing four power levels to the varous values. SOLUTION: A Peak Power is assigned to a 1st group, and a Bias power (1), Bias Power (2) and Bias Power (3) are assigned to a 2nd group. The independent variable to be assigned to the 1st group is designated as 'magnification x', and the independent variable to be assigned to the 2nd group is designated as 'magnification y'. The value of the Peak Power at the time of recording is made to x times of the initial value, and values of the Bias Power (1), Bias Power (2) and Bias Power (3) at the time of recording are respectively made to y times of the initial values, then the information is recorded while changing the x and y to the various values, and also the recorded information is reproduced. The fluctuation of the reproduced signal (reproduction jitter) is measured, and the values of x and y are adjusted so that the value of the measured jitter is reduced lower than the prescribed value.

128. 发明专利

JP2000149262A INFORMATION RECORDING METHOD AND INFORMATION RECORDING DEVICE 失效
公开(公告)号：JP2000149262A
公开(公告)日：2000-05-30
申请号：JP32315198
申请日：1998-11-13
申请人： HITACHI LTD
发明人： SHINDO HIDEHIKO , SUKETA YASUSHI , MAEDA TAKESHI , MINEMURA HIROYUKI , MIYAUCHI YASUSHI , TODA TAKESHI
IPC分类号： G11B7/125 , G11B7/00 , G11B7/0045
摘要： PROBLEM TO BE SOLVED: To make recordable information always stably even if the recording characteristics of a recording device is varied by deciding two values of timing to be adjusted by the first combination having length of first and second states and the second combination having length of first and second states, and the like. SOLUTION: These device are a lookup table for compensating pre-edge timing and a lookup table for compensating post-edge timing, and each element is indicated in a matrix type. Then, elements i=1 and i=2 out of Mi,j are included in a group A, and elements i=3 and i=4 out of Mi,j are included in a group B. Thus, the lookup tables are classified and compensation is performed en bloc for every group. And for example, simple arithmetic relation is used among respective compensation value as compensation value for each group. Also, compensation values given for each group are varied and recording/ reproducing are performed, and compensation value are optimized sop that the jitter value is made minimum.

129. 发明专利

JPH10289447A INFORMATION RECORDING MEDIUM, AND INITIALIZING METHOD AND DEVICE FOR INITIALIZING THE MEDIUM 失效
公开(公告)号：JPH10289447A
公开(公告)日：1998-10-27
申请号：JP33528097
申请日：1997-12-05
申请人： HITACHI LTD
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , TOKUJIYUKU NOBUHIRO , MIYAMOTO MAKOTO , HIROTSUNE AKEMI , UMEZAWA YOSHIKI
IPC分类号： G11B7/24 , G11B7/00 , G11B7/0055 , G11B7/125 , G11B7/30
摘要： PROBLEM TO BE SOLVED: To provide an information recording medium initializing method capable of performing a sure initial crystallization even in a disk having deep grooves by initializing the information disk in a state in which a beam spot is arranged so as to form an angle other than an angle parallel with respect to a recording track direc tion while using a high-output semiconductor laser whose light emitting wavelength is within a specific range. SOLUTION: In the initializing method of a re-writable optical disk which is produced by prescribed processes and in which the absorption rate of the neighborhood of wavelengths 650 nm-700 nm is made the maximum, the high-outer laser beam whose wavelength is 695 nm is used in order to perform the sure initial crystallization and the beam spot is projected on the disk so that an initializing beam is focused on a position distant from the recording film surface of the disk by the extent of 6 μm by rotating the disk in a constant linear velocity. At this time the beam spot 9 is arranged so that the direction of the major axis of the spot 9 roughly orthogonally cross with respect to recording tracks 10. Thus, the initializing of the most numerous areas is performed with one rotation of the disk and the whole surface of the disk can be initialized in a short time.

130. 发明专利

JPH07223372A DATA RECORDING MEMBRANE AND MEDIUM 失效
公开(公告)号：JPH07223372A
公开(公告)日：1995-08-22
申请号：JP13536794
申请日：1994-06-17
申请人： HITACHI LTD
发明人： HIROTSUNE AKEMI , TERAO MOTOYASU , MIYAUCHI YASUSHI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243 , G11B7/26
摘要： PURPOSE:To enable many-time rewriting. and super-resolving reading while keeping high recording/reproducing characteristics. CONSTITUTION:Cr and at least one element X selected from Ag, Ba, Co, Ni, Pt, Si, Sr, Au, Cd, Cu, Li, Mo, Mn, Zn, Al, Fe,' Pb, Na, Cs, Ga, Pd, Bi, Sn, Ti, V, In and a lanthanide element or B are added to an Sb-Te-Ge or Sb-Te-In base phase change type recording membrane 3 or super-resolving reading membrane. A component 3b having an m.p. higher than that of the phase change component 3a is precipitated in the recording membrane 3 or super-resolving reading membrane to prevent the flow/segregation of the membrane at the time of recording/erasure and super-resolving reading.

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