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11. 发明专利

JPH04186530A METHOD OF INITIALIZING RECORDING MEDIUM 失效
公开(公告)号：JPH04186530A
公开(公告)日：1992-07-03
申请号：JP31394790
申请日：1990-11-21
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , ANDO KEIKICHI
IPC分类号： G11B11/10 , G11B7/00 , G11B7/0055 , G11B7/135 , G11B7/30 , G11B11/105
摘要： PURPOSE:To enable initialization in a short time by using one high-output semiconductor laser and setting the laser in such a way that the longitudinal direction of the beam spot is inclined at an angle to a recording track. CONSTITUTION:A single high-output semiconductor laser is used, and the longitudinal direction of a beam spot 7 is inclined at an angle except an angle parallel with the direction of a recording track 8. A region to be initialized is moved, and the region is initialized while the spot 7 is shifted in the direction approximately vertical to the direction of the track 8. When the speed of movement of the region to be initialized is kept constant without depending upon a place, the longitudinal direction of the spot 7 is set so that the angle formed by crossing with the direction of the track 8 is approximately 90 deg., thus initializing the region in the shortest time.

12. 发明专利

JPH0414635A INFORMATION RECORDING MEMBER 失效
公开(公告)号：JPH0414635A
公开(公告)日：1992-01-20
申请号：JP11758190
申请日：1990-05-09
申请人： HITACHI LTD , HITACHI MAXELL
发明人： ANDO KEIKICHI , TERAO MOTOYASU , TAMURA NORIHITO , MIYAUCHI YASUSHI , NISHIDA TETSUYA , OTA NORIO
IPC分类号： G11B7/24
摘要： PURPOSE:To prevent dimensional changes of the substrate surface due to recording laser beam and to prevent decrease in recording sensitivity by providing protective layers essentially comprising oxides, sulfides, carbides, serenides, nitrides, etc., in a multilayer structure adjacent to a recording thin film. CONSTITUTION:The first protective layer 3 is a thin film essentially comprising oxide, nitride, or carbide and has the thermal conductivity between >= 8 W/m.K and = 10 W/m.K and

13. 发明专利

JPH0363178A DATA RECORDING MEMBRANE AND DATA RECORDING AND REPRODUCING METHOD 失效
公开(公告)号：JPH0363178A
公开(公告)日：1991-03-19
申请号：JP19944189
申请日：1989-08-02
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TAMURA AYAHITO , TERAO MOTOYASU , MIYAUCHI YASUSHI , ANDO KEIKICHI , NISHIDA TETSUYA
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243
摘要： PURPOSE:To improve recording and reproducing characteristics, to enhance sensitivity and to improve stability by forming a data recording membrane so as to have an average composition represented by general formula SbxTeyMAzMBpMCqMDr in the thickness direction thereof. CONSTITUTION:A data recording membrane has an average composition represented by general formula SbxTeyMAzMBpMCqMDr in the thickness direction thereof. In the general formula, x, y, z, p, q and r are atomic % and values within ranges in an attached table I, MA is Sn, Bi or Pb, MB is Tl, a halogen element such as I or alkali metal such as Na, MC is Ag, Cu or Pd, Md is Sb, Te or at least one element among elements other than elements represented by MA, MB and MC. By this method, an amorphous state is stably held and crystallization at the time of recording/erasure can be performed at a high speed.

14. 发明专利

JPH02158383A DATA RECORDING MEMBRANE 失效
公开(公告)号：JPH02158383A
公开(公告)日：1990-06-18
申请号：JP31201688
申请日：1988-12-12
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , NISHIDA TETSUYA , ANDO KEIKICHI , TAMURA NORIKIMI
IPC分类号： B41M5/26 , G11B7/243
摘要： PURPOSE:To form the title membrane having good recording/reproduction characteristics and high sensitivity and enhanced in stability by allowing Ge, Te and other elements to coexist in a specific ratio not only to stably hold an amorphous state but also to increase a crystallization speed at the time of recording/erasure. CONSTITUTION:The average composition of a data recording membrane in the thickness direction thereof is represented by formula, wherein x, y, z, alpha, betaand gamma are respectively 0

15. 发明专利

JPH02151482A DATA RECORDING MEMBRANE 失效
公开(公告)号：JPH02151482A
公开(公告)日：1990-06-11
申请号：JP30605588
申请日：1988-12-05
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , ANDO KEIKICHI , NISHIDA TETSUYA , TAMURA REIJI
IPC分类号： B41M5/26 , G11B7/243
摘要： PURPOSE:To obtain a data recording membrane having good recording/ reproduction characteristics and good stability by setting the average composition of the data recording membrane in the membrane thickness direction to a composition represented by a specific formula. CONSTITUTION:A data recording membrane whose average composition in the membrane direction thereof is represented by formula I nxAuyAzBalphaCbetaDgamma (wherein x, y, z, alpha, beta and gamma have values of 12

16. 发明专利

JPH02128332A MEMBER FOR INFORMATION RECORDING 失效
公开(公告)号：JPH02128332A
公开(公告)日：1990-05-16
申请号：JP28123988
申请日：1988-11-09
申请人： HITACHI LTD , HITACHI MAXELL
发明人： ANDO KEIKICHI , TERAO MOTOHIRO , NISHIDA TETSUYA , MIYAUCHI YASUSHI , TAMURA NORIHITO
IPC分类号： G11B11/10 , C23C28/00 , G11B7/24 , G11B11/105
摘要： PURPOSE:To obtain the reproducing waveforms faithful to signals to be recorded by providing a thin film essentially consisting of specific metal elements in proximity to thin films for recording. CONSTITUTION:The layer 5 which consists essentially of at least one selected from a group A consisting of Al, Cu, Ag, and Au and at least one selected from a group B consisting of Ti, V, Cr, Fe, Co, Ni, Zn, Zr, Nb, Mo, Rh, Pd, Sn, Sb, Te, Ta, W, Ir, Pt, Pb, Bi, and C is provided to the recording medium having the thin films 3 for information recording which generates changes by receiving the irradiation of light, in proximity to the thin films 3 for information recording or in contact with a protective layer 4 which is formed adjacently to the thin films 3 for information recording and consists at least one among inorg. and org. materials. The reproducing waveforms faithful to the recording signals are obtd. in this way and the scattering of the laser light by the change in the surface shape is obviated; in addition, the decrease of the recording sensitivity is obviated.

17. 发明专利

JP2001143310A INFORMATION RECORDING/REPRODUCING DEVICE 失效
公开(公告)号：JP2001143310A
公开(公告)日：2001-05-25
申请号：JP31990799
申请日：1999-11-10
申请人： HITACHI MAXELL , HITACHI LTD
发明人： KOYAMA EIJI , MIYAUCHI YASUSHI , SHINTANI TOSHIMICHI , TERAO MOTOYASU , YAMAMOTO HIROTAKA , KIRINO FUMIYOSHI , NAITO TAKASHI , TAKAHASHI KEN
IPC分类号： G11B11/105 , G11B7/12 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide an information recoding/reproducing device having a large capacity and moreover, capable of recording or reading many times. SOLUTION: In the device, a mask layer 2 whose optical characteristics are reversibly changed by irradiation with light is provided in a flat surface including the light condensing position of a hemispherical lens 1, and the optical characteristics of a part mask layer 2 within a light spot are changed by laser beams when information is reproduced. The mask layer 2 whose optical characteristics are reversibly changed by shining light is provided on the surface of the hemisherical lens 1, the characteristics of a part of mask layer 2 within the light spot are changed by the laser beams when information is reproduces, and thereby, the light spot diameter of incident light is effectively reduced and a high NA having not been attained by a conventional method is realized.

18. 发明专利

JP2000076660A Information recording/reproducing device 有权
标题翻译：信息记录/再现设备
公开(公告)号：JP2000076660A
公开(公告)日：2000-03-14
申请号：JP26673399
申请日：1999-09-21
申请人： Hitachi Ltd , Hitachi Maxell Ltd , 日立マクセル株式会社 , 株式会社日立製作所
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , OSHIMA MASAHIRO , HIROTSUNE AKEMI
IPC分类号： G11B7/24 , G11B7/004 , G11B7/007 , G11B7/09
摘要： PROBLEM TO BE SOLVED: To provide an information recording member and a recording/ reproducing device stably recording and reproducing in a short time in the information recording member making both or a land part and a groove part formed on a substrate surface a recording track recording information. SOLUTION: A substrate is used wherein the land part 2 and the groove part 1 appear alternately along the recording track, and the switching points A of the land part 2 and the groove part 1 exist by the number shown by a following relation per one round of the recording track. The relation is made 2m-1 (m: 1, 2, 3...). Thus, since the land part 2 and the groove part 1 are formed alternately on one round of the recording track, continuous recording and reproducing to both of the land part and the groove part become possible without track jumping between the land part and the groove part, and a recording time and an access time are reduced.
摘要翻译：要解决的问题：为了在信息记录部件中在短时间内稳定地记录和再现信息记录部件和记录/再现装置，使得形成在基板表面上的两个或一个焊盘部分和凹槽部分成为记录磁道记录信息。解决方案：使用基板，其中岸台部分2和槽部分1沿着记录轨道交替显示，并且岸台部分2和凹槽部分1的切换点A以每一轮的以下关系所示的数字存在的录音轨道。关系为2m-1（m：1,2,3 ...）。因此，由于陆部2和槽部1交替地形成在记录轨道的一圈上，因此在陆部和槽部之间没有轨道跳跃的情况下，能够对陆部和槽部两者进行连续的记录和再现，并且记录时间和访问时间减少。

19. 发明专利

JPH11296907A INFORMATION RECORDING MEDIUM 失效
公开(公告)号：JPH11296907A
公开(公告)日：1999-10-29
申请号：JP9424998
申请日：1998-04-07
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HIROTSUNE AKEMI , TERAO MOTOYASU , MIYAUCHI YASUSHI , IKARI YOSHIHIRO , SHIRAI HIROSHI
IPC分类号： G11B7/254 , G11B7/24 , G11B7/257
摘要： PROBLEM TO BE SOLVED: To maintain good recording and reproducing characteristics for many times of rewriting and to decrease changes in the reflectance level by forming such a structure that has a recording film to record and/or reproduce information, a protective layer formed on the incident side of light of the recording film, and a reflection layer with an intermediate layer on the back side of the recording film when the recording film is observed from the incident side of light, and that the intermediate layer has a specified compsn. SOLUTION: The intermediate layer 5, 5' consists of Zn-M-L-S-N-O, wherein M is at least one of Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, Ge, Se, Sr, Y, Zr, Nb, Mo, Ru, Rh, Pd, Ag, Cd, In, Sn, Te, Ba, Hf, Ta, W, Re, Os, Ir, Pt, Au, Pb, Bi, Ra, La, Ce, Sm, Gd, Tb and Dy, and L is at least one of Si, Ge, Al, Ta, Hf, Mo, Ti, V, W, Y, Zr, Cr, Nb and Zn.

20. 发明专利

JPH09161276A INFORMATION RECORDING MEDIUM AS WELL AS RECORDING METHOD AND RECORDING DEVICE 失效
公开(公告)号：JPH09161276A
公开(公告)日：1997-06-20
申请号：JP32420095
申请日：1995-12-13
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , MIYAMOTO JIICHI , MINEMURA HIROYUKI , HIROTSUNE AKEMI
IPC分类号： G11B20/12 , G11B7/00 , G11B7/0045 , G11B7/007 , G11B7/30 , G11B11/10 , G11B11/105
摘要： PROBLEM TO BE SOLVED: To suppress the waveform distortion of reproduced signals by the flow of a recording film at the time of many times of rewriting in a recording method for information capable of recording the information by irradiation with an energy beam. SOLUTION: The recording medium having recording regions 14 held by dummy regions 15, 16 in succession to preformat regions 10 is used and the information is recorded by the signals added with the dummy signals of the optimum patterns described in the control tracks of this recording medium in at least one side of the fore and aft recording information signal. As a result, the flow of the recording film at the time of many times of rewriting stains in the dummy regions 5, 16 and does not affect the inside of the desired recording regions even if the dummy regions are not widened and, therefore, the faithful reproduction of the desired recording information is made possible.

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