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1. 发明专利

JP2000101283A ELECTROMAGNETIC WAVE ABSORBING BODY AND MANUFACTURE THEREOF 失效
公开(公告)号：JP2000101283A
公开(公告)日：2000-04-07
申请号：JP26486198
申请日：1998-09-18
申请人： SONY CORP
发明人： KISHI TAKASHI , IWABUCHI KIETSU , SUGAWARA TOSHIAKI , INOMATA KOJI , OTA EIJI
IPC分类号： H05K9/00
摘要： PROBLEM TO BE SOLVED: To improve workability, form-preservation characteristics, and absorbance by forming an electromagnetic wave absorbing layer whose main components are soft-magnetic particles and a binder on a peelable support body, and bonding first main surfaces together. SOLUTION: An electromagnetic wave absorbing layer 2 is formed on a peelable support body 1, and the absorbing layer 2 comprises a first main (front) surface 21 and a second main (rear) surface 22. The bonding surface wherein a pair of structure bodies is bonded is set as first main surfaces of the electromagnetic wave absorbing layer 2. The peelable support bodies 1 on both surfaces of the structure body are all peeled, which is an electromagnetic wave support body comprising only a pair of electromagnetic wave absorbing layer 2. In order to raise an electromagnetic wave absorbing ability, only the peelable support body 1 on one side is peeled and exposed second main surfaces 22 are stacked, and then continuously allowed to pass a heating roller method laminator for heat/pressure bonding under the condition of 150 deg.C, 10 kg/cm2. Thus, thin, light weight, and flexible material is provided with excellent mechanism while excellent in workability and form-preserving characteristics and providing a high absorbing performance.

2. 发明专利

JPH07141652A PRODUCTION OF MAGNETIC RECORDING MEDIUM 失效
公开(公告)号：JPH07141652A
公开(公告)日：1995-06-02
申请号：JP28525793
申请日：1993-11-15
申请人： SONY CORP
发明人： OKAMOTO KAZUHIRO , KISHI TAKASHI
IPC分类号： C09D5/00 , C09D5/23 , C09D127/04 , C09D127/06 , G11B5/702 , G11B5/842
摘要： PURPOSE:To form a magnetic coating film excellent in dispersibility, strength and electromagnetic transducing characteristics almost independently of dehydrochlorination while using a PVC copolymer having cationic polar groups and to obtain a magnetic recording medium excellent in magnetic characteristics and running durability. CONSTITUTION:A PVC copolymer having at least tert. amine groups or quat. ammonium salt groups is purified by reprecipitation and immediately mixed with magnetic powder to prepare a magnetic coating material and the objective magnetic recording medium is produced by coating a nonmagnetic substrate with the coating material.

3. 发明专利

JPH0520809B2 失效
公开(公告)号：JPH0520809B2
公开(公告)日：1993-03-22
申请号：JP13494384
申请日：1984-06-29
申请人： SONY CORP
发明人： CHIBA KAZUNOBU , KISHI TAKASHI , KAWANA TAKAHIRO , ITO KAZUMINE
IPC分类号： G11B5/66 , C09D109/02 , C09D109/06 , C09D127/08 , C09D167/00 , C09D175/04 , G11B5/64 , G11B5/73 , G11B5/738

4. 发明专利

JPH056582A MAGNETO-OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH056582A
公开(公告)日：1993-01-14
申请号：JP5956791
申请日：1991-03-01
申请人： SONY CORP
发明人： IKEDA ETSURO , YOSHIKAWA MASAHIRO , KISHI TAKASHI
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To suppress the deterioration of the characteristics of the magneto- optical recording medium and to allow low-magnetic field recording. CONSTITUTION:This magneto-optical recording medium is constituted by laminating a dielectric layer on a recording layer consisting of a RE-TM magnetic film. The constituting elements of the dielectric layer intrudes into the RE-TM magnetic film according to film forming conditions, etc., and the region where the above-mentioned constituting elements intrude is confined to

5. 发明专利

JPH04364249A MAGNETO-OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPH04364249A
公开(公告)日：1992-12-16
申请号：JP23561091
申请日：1991-08-23
申请人： SONY CORP
发明人： ABIKO TORU , KISHI TAKASHI , NAKAYAMA HIROSHI , YOSHIDA MARI
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To provide a magneto-optical recording medium exhibiting excellent recording and reproducing characteristic even under low external magnetic field. CONSTITUTION:In the magneto-optical recording medium which is made by film-forming a thin rare earth-transition metal alloy film and a dielectric film on a substrate, a gas containing oxygen as a composition element is introduced when film-forming the dielectric film. Carbon monoxide or carbon dioxide is also used with oxygen as the gas containing oxygen as the composition element, and when carbon monoxide or carbon dioxide is selected, a SiN film (SiCON film) containing oxygen and carbon is formed. When constituting the magneto- optical recording medium of four layer structure or five layer structure having SiCON film as the dielectric film, the film thickness of the 1st dielectric film is preferably 600-900Angstrom film thickness of the 2nd dielectric film is

6. 发明专利

JPS6364794A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS6364794A
公开(公告)日：1988-03-23
申请号：JP20970686
申请日：1986-09-08
申请人： SONY CORP
发明人： KISHI TAKASHI , UENO NAOYUKI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/244
摘要： PURPOSE:To obtain an optical recording medium not generating the deterioration in light fastness in spite of long-term preservation and excellent in reliability and mass productivity, by forming a recording layer containing a cyanine dye and an electron acceptive compound on a substrate. CONSTITUTION:A recording layer containing a cyanine dye and an electron acceptive compound is formed on a substrate. The recording layer composed of the combination of the cyanine dye and the electron acceptive compound has the large reflectivity and light absorption factor in a predetermined laser beam wavelength region and a generates no deterioration of light fastness over a long period of time. The cyanine dye used in the recording layer has a structure wherein a nitrogen-containing heterocyclic ring is bonded to both terminals of a methine chain. The electron acceptive compound has action stabilizing the cyanine dye and enhancing light fastness and a compound having capacity forming a so called pi-type change transfer complex is pref.

7. 发明专利

JPS6242325A MAGNETIC DISK 失效
公开(公告)号：JPS6242325A
公开(公告)日：1987-02-24
申请号：JP18199685
申请日：1985-08-20
申请人： SONY CORP
发明人： BABA KENICHI , NAKAJIMA KAORU , KISHI TAKASHI
IPC分类号： G11B5/702 , C09D5/23 , C09D163/10 , G11B5/72 , G11B5/73 , G11B5/82
摘要： PURPOSE:To provide reduction of weight, reduction of the electric power consumption of a disk drive device, improvement of durability and SN ratio and increase of adhesive power between a substrate and magnetic coated film by using a resin substrate having high rigidity and heat resistance and subjected to an oxygen plasma treatment for the substrate and using an electron radiation curing resin as a binder for the magnetic coated film. CONSTITUTION:The surface of the resin substrate having high rigidity and heat resistance is subjected to a physicochemical surface treatment by the oxygen plasma generated by executing glow discharge in an oxygen atmosphere in the stage of subjecting the resin substrate having high rigidity and heat resistance to the plasma treatment in oxygen to activate the surface thereof. The coated film consisting of an epoxy acrylate or epoxy methacrylate which is the electron radiation curing resin to be used as the binder for the magnetic layer is extremely hard and has excellent polishing property as well. Ferromagnetic iron oxide particles, ferromagnetic chromium dioxide, ferromagnetic alloy powder and hexagonal ferrite particles, etc. are used for the ferromagnetic powder. The respective components are dissolved in a solvent to prepare a magnetic coating compd. which is then coated in the substrate having the high rigidity and heat resistance. The coating is cured by the irradiation of electron rays thereon.

8. 发明专利

JP2001260589A WRITABLE SHEET AND METHOD FOR MANUFACTURING THE SAME 失效
公开(公告)号：JP2001260589A
公开(公告)日：2001-09-25
申请号：JP2000072536
申请日：2000-03-15
申请人： SONY CORP
发明人： SUDO YOSHITAKA , KISHI TAKASHI , OTA EIJI , HAGA TOMOMI
IPC分类号： B43L1/10
摘要： PROBLEM TO BE SOLVED: To provide a writable layer excellent in the writing properties and ink fixability due to an aqueous pen or gel ink pen and having proper friction force and hardness. SOLUTION: In a writable sheet 10 consisting of a support and the recording layer provided on the support, the recording layer is formed using a paint prepared by mixing 10-50 parts by weight of particles with a mean particle size of 7-200 (nm) and a plasticizer with 100 (parts by weight) of a self-crosslinkable polyvinyl alcohol resin obtained by graft-polymerizing a crosslinkable monomer and an acid monomer.

9. 发明专利

JPS63172690A DIRECT-READ-AFTER-WRITE TYPE OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS63172690A
公开(公告)日：1988-07-16
申请号：JP472887
申请日：1987-01-12
申请人： SONY CORP
发明人： UENO NAOYUKI , NANJO MARI , KISHI TAKASHI
IPC分类号： G11B7/24 , B41M5/26 , G11B7/243 , G11B7/244
摘要： PURPOSE:To obtain a direct-read-after-write type optical recording medium having little variations in reflectance of a recording layer due to photo-deterioration and having excellent long-time reliability, by setting the film thickness of the recording layer to be greater than the film thickness with which the recording layer shows a maximum reflectance. CONSTITUTION:A recording layer 2 comprising an organic coloring matter material is provided on a transparent base 1, the layer 2 is irradiated with laser light L from, for example, the side of the base 1 through an objective 3, and an information signal is taken out based on the light reflected from the recording layer 2. As for variations in the reflectance due to photo-deterioration of the recording layer 2, it is preferable that the variations in the reflectance are as small as possible. After deterioration, a maximum reflectance is obtained at a point with a film thickness greater than the film thickness with which the maximum reflectance is shown before the deteriora tion. Therefore, when the film thickness (d) of the recording layer 2 is initially set to be greater than the film thickness with which the maximum reflectance is displayed, it is possible to restrict the variations in the reflectance of the recording layer due to photo-deterioration, and to provide a direct-read-after-write type recording medium having excellent long time-reliability.

10. 发明专利

JPS6313788A OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JPS6313788A
公开(公告)日：1988-01-21
申请号：JP15730586
申请日：1986-07-04
申请人： SONY CORP
发明人： UENO NAOYUKI , KOMADA NAOYA , KISHI TAKASHI
IPC分类号： B41M5/26 , G11B7/24 , G11B7/244
摘要： PURPOSE:To obtain an optical recording medium which is free from deterioration of resistance to weather even under a long-term storage and superior in reliability and mass-production properties, by forming a recording layer containing cyanine dye and polyvinyl toluene on a substrate. CONSTITUTION:Cyanine dye in use is so constructed that nitrogen-containing heterocycle are combined with the both ends of a methine chain. On the other hand, polyvinyl toluene is uniformly dispersed in the cyanine dye in a composition ratio A (cyanine dye/polyvinyl toluene) ranging 25/75

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