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51. 发明专利

JPH0562244A MEMBER FOR RECORDING OF INFORMATION 失效
公开(公告)号：JPH0562244A
公开(公告)日：1993-03-12
申请号：JP22564291
申请日：1991-09-05
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , OKAMINE SHIGENORI
IPC分类号： G11B7/24 , G11B7/241
摘要： PURPOSE:To suppress an increase of noises by fluidization and to allow many times of rewriting by optimizing the film thicknesses of intermediate layers and reflection layers. CONSTITUTION:A protective layer 2 consisting of ZnS-SiO2 is formed on a polycarbonate substrate 1 having grooves for tracking. A recording film 3 consisting of a comps. composed of Ge13Sb30Te56Co1 is formed on this protective layer 2. The intermediate layer 4 consisting of ZnS-SiO2 is then formed thereon. Further, the Al reflection layer 5 is deposited thereon and a protective layer 6 consisting of a UV curing resin is provided thereon. The film thickness of the intermediate layer 4 of such constitution is specified to >=5nm and the film thickness of the reflection layer 5 to

52. 发明专利

JPH04281219A METHOD FOR INITIALIZING RECORDING MEDIUM 失效
公开(公告)号：JPH04281219A
公开(公告)日：1992-10-06
申请号：JP1321091
申请日：1991-02-04
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , OKAMINE SHIGENORI
IPC分类号： G11B7/00 , G11B7/0055 , G11B7/26 , G11B7/30
摘要： PURPOSE:To obtain an initialization method for attaining good rewriting characteristic in an optical disk in which optical recording film capable of recording information by the irradiation of energy beam is used. CONSTITUTION:The initialization is performed for the disk formed in order of a protective layer 2, a recording film 3, an intermediate layer 4 and a reflection layer 5 on a base board 1 by both a laser beam irradiation and a flash light irradiation that beam is instantaneously irradiated within a short time. At first, the laser beam irradiation is performed and the crystalline state is made by the flash light irradiation. When the tracking is not applied since the reflectance is low, the reflectance is increased by the flash light irradiation and then, the laser irradiation is performed. In both embodiments, the change of the reflectance and the change of C/N in the crystalline part do not occur even if many rewriting are performed by the laser beam that the power modulation is performed between the crystallizing power level and the power level realizing a nearly amorphous state.

53. 发明专利

JPH03252933A INFORMATION RECORDING MEMBER 失效
公开(公告)号：JPH03252933A
公开(公告)日：1991-11-12
申请号：JP4937690
申请日：1990-03-02
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TERAO MOTOYASU , ANDO KEIKICHI , MIYAUCHI YASUSHI , OTA NORIO
IPC分类号： G11B7/24 , G11B7/254 , G11B7/257
摘要： PURPOSE:To prevent scattering of laser light for reading due to thermal deformation or peeling by providing a protective layer comprising a mixture composition of specified materials adjacent to at least one side of a recording film. CONSTITUTION:A protective layer 2 is provided adjacent to a thin film 3 used as a recording film. This protective layer 2 consists of a mixture material of one material selected from ZnS, ZnSe, CdS, CdSe, and InS, or from materials having an almost same composition of these, and another material essentially comprising an oxide having a composition almost same as that of at least one oxide selected from Al2O3, Ta2O5, Cu2O, WO3, MoO3, CeO2, La2O3, and SiO. Thereby, deterioration, peeling or deformation due to irradiation of recording beam can be prevented and the obtd. medium shows little reduction of recording sensitivity.

54. 发明专利

JPH03173684A DATA RECORDING MEMBER 失效
公开(公告)号：JPH03173684A
公开(公告)日：1991-07-26
申请号：JP19799090
申请日：1990-07-27
申请人： HITACHI LTD , HITACHI MAXELL
发明人： ANDO KEIKICHI , TERAO MOTOYASU , NISHIDA TETSUYA , MIYAUCHI YASUSHI , TAMURA NORIHITO , OTA NORIO
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243 , G11B7/254 , G11B7/257
摘要： PURPOSE:To reduce a pinhole and to prevent interlaminar release or the deterioration or deformation of a resin by providing a compound based on two or more kinds of oxide, sulfide, selenoid or nitride having different melting points as a protective layer so as to be adjacent to a data recording membrane. CONSTITUTION:A membrane 2 composed of a composition near to ZrSiO4 based on oxide, sulfide, selenide or nitride is laminated to a substrate 1 having a guide groove as a protective layer. Next, an Sn-Sb-Te type data recording membrane 3 receiving the irradiation with recording beam to generate an atomic arrangement change almost bringing about no deformation is formed and an intermediate layer 4 composed of oxide having a composition near to ZrSiO4 is laminated to the membrane 3. Further, an Au membrane is laminated as a membrane 5 based on a metal element and a resin 6 is subsequently used to be exposed to ultraviolet rays for about 2 min to laminate the membrane 5 based on the metal element and a protective layer 7. Next, the data recording membrane 3 is irradiated with laser beam on the side of the substrate 1 to record data.

55. 发明专利

JPH0235636A THIN FILM FOR INFORMATION RECORDING AND INFORMATION RECORDING AND REPRODUCING METHOD 失效
公开(公告)号：JPH0235636A
公开(公告)日：1990-02-06
申请号：JP15478688
申请日：1988-06-24
申请人： HITACHI LTD , HITACHI MAXELL
发明人： TAMURA NORIHITO , TERAO MOTOYASU , MIYAUCHI YASUSHI , ANDO KEIKICHI , NISHIDA TETSUYA
IPC分类号： B41M5/26 , G11B7/24 , G11B7/243 , G11B9/10
摘要： PURPOSE:To realize the thin film for information recording having good recording and reproducing characteristics, high sensitivity and good stability by specifying the average compsn. in the thickness direction of the thin film for information recording. CONSTITUTION:The average compsn. in the thickness direction of the thin film for information recording is expressed by the formula I. In the formula I, x, y, z, alpha, beta, gamma are respectively of the values ranging 10

56. 发明专利

JPH01268864A FORMATION OF THIN FILM 失效
公开(公告)号：JPH01268864A
公开(公告)日：1989-10-26
申请号：JP9558088
申请日：1988-04-20
申请人： HITACHI LTD , HITACHI MAXELL
发明人： ANDO KEIKICHI , TERAO MOTOYASU , NISHIDA TETSUYA , MIYAUCHI YASUSHI , TAMURA REIJI
IPC分类号： B41M5/26 , C23C14/34 , G11B7/26
摘要： PURPOSE:To form a thin film by single target, by changing target temp. at the time of forming a thin film containing plural elements dissimilar in the dependence of sputtering efficiency on target temp. by a sputtering method. CONSTITUTION:For example., target 5 and a transparent substrate 1 are disposed respectively on a lower electrode 6 and an upper electrode 4 in a vacuum chamber 8 of a high frequency double-pole glow discharge-type sputtering device, and then, the pressure inside the chamber 8 is reduced to the prescribed value and an Ar gas 9 is introduced to keep the inside of the chamber 8 at the prescribed pressure. High frequency electric power 7 is impressed in the above state to produce plasma between the substrate 1 and the target 5. At this time, a target 5 containing Se and an element having a sputtering efficiency at high temp. lower than that of Se is used as the above target 5. Subsequently, a recording film 2 is formed by carrying out sputtering while regulating the high frequency electric power to about 50W, and then a protective film 3 is formed similarly while increasing the high frequency electric power to about 150W. Moreover, it is also possible to continuously change the composition of the part between the films 2, 3.

57. 发明专利

JPH01208744A RECORDING MEMBER 失效
公开(公告)号：JPH01208744A
公开(公告)日：1989-08-22
申请号：JP3274888
申请日：1988-02-17
申请人： HITACHI LTD , HITACHI MAXELL
发明人： ANDO KEIKICHI , TERAO MOTOYASU , NISHIDA TETSUYA , MIYAUCHI YASUSHI , TAMURA AYAHITO
IPC分类号： G11B7/241 , G11B7/24
摘要： PURPOSE:To prevent deterioration in properties of a resin or deformation thereof by radiation of a recording beam by providing a thin film essentially consisting of specific metal elements having a small thermal conductivity on a thin film for recording. CONSTITUTION:A protective layer 4 is laminated on the thin film 3 for information recording which is formed via a lower protective layer 2 on a substrate 1 having guide grooves and generates a change of atomic configuration with substantially no deformation when subjected to irradiation of the beam for recording. The layer essentially consisting of at least one selected from a group consisting of Al, Ti, V, Cr, Fe, Ni, Bi, etc., is laminated as a thin film 5 and thereafter, the thin film 5 side of the substrate 1 and a protective plate 7 are stuck to each other by using a resin 6 which is cured by radiation of UV rays. The thin film 5 consists essentially of the metal elements having the small thermal conductivity and diffuses the heat generated by the radiation of the beam for recording. The deterioration in the properties of the resin 6 or the deformation thereof generated by the radiation of the beam for recording thereto is thereby prevented.

58. 发明专利

JP3251553B2 RECORDING MEDIUM OF INFORMATION, RECORDING METHOD AND RECORDER 失效
公开(公告)号：JP3251553B2
公开(公告)日：2002-01-28
申请号：JP31563098
申请日：1998-11-06
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , HIROTSUNE AKEMI , MINEMURA HIROYUKI
IPC分类号： G11B7/00 , G11B7/0045 , G11B7/006 , G11B7/007 , G11B7/24 , G11B7/243 , G11B20/12

59. 发明专利

JPH1049916A INFORMATION RECORDING MEDIUM AND INFORMATION MEMORY DEVICE 失效
公开(公告)号：JPH1049916A
公开(公告)日：1998-02-20
申请号：JP20153596
申请日：1996-07-31
申请人： HITACHI LTD , HITACHI MAXELL
发明人： HIROTSUNE AKEMI , TERAO MOTOYASU , MIYAUCHI YASUSHI , MIYAMOTO MAKOTO
IPC分类号： G11B7/24 , G11B7/257 , G11B7/258
摘要： PROBLEM TO BE SOLVED: To enable rewriting or super-high resolution reading out a large number of times than heretofore while maintaining good recording and reproducing characteristics or super-high resolution reading out characteristic. SOLUTION: A reflection layer is formed to a two-layered structure consisting of a layer 5 essentially consisting of So and a layer 65 essentially consent of a metallic material and Al oxide is used for at least part of the upper and lower dielectric layers of a recording film 3, by which the fluctuation in the reflection level, the increase or reproducing signal jitters, etc., are suppressed when many times of rewriting or super-high resolution reading out is executed. Many times of rewriting or super-high resolution reading out is thus made possible.

60. 发明专利

JPH09312036A INFORMATION RECORDING MEDIUM, METHOD AND DEVICE FOR INITIALIZING THE SAME 失效
公开(公告)号：JPH09312036A
公开(公告)日：1997-12-02
申请号：JP12538996
申请日：1996-05-21
申请人： HITACHI LTD , HITACHI MAXELL
发明人： MIYAUCHI YASUSHI , TERAO MOTOYASU , TOYAMA HIROSHI , MATSUMURA YASUHIDE , HIROTSUNE AKEMI , MIYAMOTO MAKOTO
IPC分类号： G11B7/242 , G11B7/00 , G11B7/0055 , G11B7/24 , G11B7/30
摘要： PROBLEM TO BE SOLVED: To provide a device capable of surely recording information irrespective of the number of overwriting times by providing an incoherent initializing light source, a means for rotating or moving a recording medium and a means for converging optical beams or passing a portion of these beams. SOLUTION: Light beams are continuously emitted from the high output halogen lamp 9 having an output of about 3KW and a spot shaped of beams emitted form the high output halogen lamp 9 is formed to be a long circular spot 10 of about 5×25cm in a recording film surface. The beams are shaped by a reflection mirror 11 and a lens 12 and the long axial direction of the long circular sport 10 is placed nearly perphendiularly to a recording track direction. Beam power is set for melting the recording film, a disk 14 is rotted by a motor 13 at a linear speed of 10m/s and while moving the long circular spot 10 from the outer periphery of the disk to its inner periphery at a constant speed and irradiation is performed.

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