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公开(公告)号：JPS63191337A
公开(公告)日：1988-08-08
申请号：JP2167587
申请日：1987-02-03
Applicant: CANON KK
Inventor： OSATO YOICHI
IPC: G11B11/10 , G11B11/105
Abstract: PURPOSE:To permit overlap writing and to improve reliability of recording by providing perpendicularly magnetized films having two-layered structure and protective film on a substrate. CONSTITUTION:A 1st magnetic layer 2, a 2nd magnetic layer and the protective film 4 are laminated on the pregrooved light transmissive substrate 1. The magnetic layer 2 is so formed as to have a low Curie point (TL, e.g., 70-180 deg.C) and high coercive force (HH, e.g., 3-10kOe) and the magnetic layer 3 is so formed as to have a high Curie point (TH, e.g., 150-400 deg.C) and low coercive force (HL, e.g., 0.5-2kOe). The protective film 4 is formed as a continuous film to >=200Angstrom thickness. The relation HH>HL>sigmaw/2Msh is provided between the saturation magnetization Ms and film thickness (h) of the magnetic layer 3 and the magnetic wall energy sigmaw between the magnetic layers 2 and 3. The sufficiently stable recording is thereby permitted and in addition, the recording bits are stably maintained for a long period of time.
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公开(公告)号：JPS63133337A
公开(公告)日：1988-06-06
申请号：JP27856686
申请日：1986-11-25
Applicant: CANON KK
Inventor： OSATO YOICHI
IPC: G11B5/02 , G11B11/10 , G11B11/105
Abstract: PURPOSE:To execute high density recording at a high speed and recording and reproduction by non-contact, by setting a direction of magnetization of two magnetic layers to a direction reverse to a direction arranged by a switched connection, as for a recorded part, and setting said direction to a direction of magnetization of its arrangement, as for an unrecorded part. CONSTITUTION:As for a medium, on a light transmissive substrate 1 on which a pre-groove is provided, a first magnetic layer 2 and a second magnetic layer 3 are laminated. The magnetic layer 2 has a low curie point TL and a high coercive force HH, and the magnetic layer 3 has a high curie point TH and a low coercive force HL. Also, as for both the magnetic layers 2, 3, a film thickness of each layer, a coercive force, magnitude of a saturation magnetization, a magnetic domain wall energy, etc., are set suitably so that a magnetized state can exist stably, namely, a relational inequality is satisfied. Said relational inequality is shown by HH>HL>rhoW/(2MSh), and MS, (h), and rhoW denote a saturation magnetization of the magnetic layer 3, a film thickness of the magnetic layer 3, and a magnetic domain wall energy between the two magnetic layers, respectively.
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公开(公告)号：JPS6232086A
公开(公告)日：1987-02-12
申请号：JP17120985
申请日：1985-08-05
Applicant: CANON KK
Inventor： FUJII HIDEKAZU , HASHIMOTO NORIO , SAITO ICHIRO , KANBE JUNICHIRO , OSATO YOICHI , TAKASU YOSHIO
Abstract: PURPOSE:To enable the mass production of an optical recording medium having excellent optical recording characteristics with good reproducibility, by reacting a specific compound containing a desired metal with an active seed in a film forming space almost simultaneously with the evaporation of metal iodide in the film forming space. CONSTITUTION:A compound containing a metal M coming to the component of a formed optical recording layer represented by RnMn (wherein m and n are respectively equal to the valencies of R and M or positive integers being integer times said valencies, M is a metal element and R is hydrogen, halogen or a hydrocarbon group) introduced into a film forming space, the exciting seed thereof and an active seed introduced apart from said seed chemically perform interaction. Thus formed desired metal M is accumulated on a substrate along with the vapor of metal iodide almost simultaneously generated in an evaporation source 8. As a result, an optical recording layer wherein the metal M was uniformly dispersed in metal iodide is easily formed on th substrate 7.
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公开(公告)号：JPS61278061A
公开(公告)日：1986-12-08
申请号：JP11878185
申请日：1985-06-03
Applicant: CANON KK
Inventor： FUJII HIDEKAZU , SAITO ICHIRO , HASHIMOTO NORIO , OSATO YOICHI
IPC: G11B11/10 , G11B11/105
Abstract: PURPOSE:To improve the corrosion resistance of the titled medium by providing a corrosion protective layer consisting of fluoride of a rare earth element. CONSTITUTION:A corrosion preventive layer 2 consisting of the fluoride of a rare earth element is laminated on a light transmitting substrate 1 and a magnetic recording layer 3 having a magneto-optical effect and a protective layer 4 are successively laminated. One or more kinds of compds. selected from a group consisting of CdF3, LaF3, CeF3, SrF2, LiF and CaF2 is preferably used as the material of the corrosion preventive layer 2. The film can be formed, for example, by vacuum deposition and sputtering. Polycarbonate, acrylic resin, glass, etc., are used as the material of the substrate and the film of CdFe, TbFe, CdFeCo and CdTbFeCo is used as the magnetic recording layer 3. The film of an inorg. material of oxides, sulfides and nitrides, metals or an org. polymeric material is used as the protective layer 4.
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公开(公告)号：JPS61216148A
公开(公告)日：1986-09-25
申请号：JP5566185
申请日：1985-03-22
Applicant: CANON KK
Inventor： KOYAMA OSAMU , YOMO MAKOTO , KASAMA NOBUHIRO , OSATO YOICHI , AOI SHIGERU
IPC: G11B11/10 , G11B11/105
Abstract: PURPOSE:To prevent the deterioration of C/N of a reproduction signal due to back talk as well as the unstable focusing and tracking servo control, by preventing the reflected light sent from a recording medium from returning to a laser. CONSTITUTION:The laser luminous flux delivered from a semiconductor laser 9 is turned into parallel luminous fluxes through a collimator lens system 10 and transmitted through a polarizer 11. Then the luminous flux whose polarizing surface is turned by pi/4 is made incident on a polarized beam splitter. The polarization axis of the splitter 13 is set coincident with the polarizing direction of the incident laser luminous flux. Then the polarized luminous flux is formed into a minute spot on a magnetic disk 15 via an objective lens system 14. The polarizing surface of the reflected light sent from the disk 15 is turned by an angle + or -thetak by the Kerr effect. This turned luminous flux is condenced to a photodetector 18 via a condenser lens 16 and a photodetector 17.
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Patent Agency Ranking
公开(公告)号：JPS61187139A
公开(公告)日：1986-08-20
申请号：JP2644885
申请日：1985-02-15
Applicant: CANON KK
Inventor： YOMO MAKOTO , AOKI SHIGERU , KASAMA SHINSUKE , KOYAMA OSAMU , OSATO YOICHI
IPC: G11B11/105 , G11B7/00 , G11B7/24 , G11B7/30 , G11B11/10
Abstract: PURPOSE:To record information of high density in a recording medium having no groove by providing a guide track consisting of parts changed to the second state in a recording medium of the first state, scanning on it by a light beam modulated according to light information and forming record bit changed to the first state. CONSTITUTION:An address signal bit 21 corresponding to an address signal is recorded in an address area 20 of a magnetic film 111 by an optical magnetic head used exclusively for recording by inverting the direction of magnetization downward while feeding an optical magnetic disk magnetized uniformly in upward direction on the track face by a feeding device. A linear record bit 23 is recorded similarly in the data area 22. When recording information, the record bit 23 also serves as a guide track. In recording information, the direction of magnetization of the record bit 23 is inverted to upward direction according to information and information record bit 24 is prepared.
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公开(公告)号：JP2000253203A
公开(公告)日：2000-09-14
申请号：JP5667199
申请日：1999-03-04
Applicant: CANON KK
Inventor： OSATO YOICHI , UENO KAZUNORI , SENOO AKIHIRO , URAKAWA SHINICHI , MASHITA SEIJI
Abstract: PROBLEM TO BE SOLVED: To provide a thin, small and inexpensive image sensor with an organic EL element light source. SOLUTION: In the image sensor, a solid-state image pickup element 10 to which the reflected light of an original 28 is imputed and the reading driving circuit 20 of the solid-state image pickup element 10 are formed on a substrate 1. A thin film organic EL element 30 having a thickness almost equal to the substrate 1 and irradiating the original 28 with line light emission is formed on a transparent substrate 21. The transparent substrate 21 of the thin film organic EL element 30 is fixed to the side of the substrate 1 on a solid-state image pickup element 10 so that the surfaces of both substrates become almost coplanar. Then, a transparent thin plate 32 is integrated on the solid-state image pickup element 10 and the transparent substrate 21 by transparent adhesive 27.
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公开(公告)号：JP2000248268A
公开(公告)日：2000-09-12
申请号：JP4907699
申请日：1999-02-25
Applicant: CANON KK
Inventor： OGURI NOBUAKI , KUSAKA TAKAO , OSATO YOICHI
Abstract: PROBLEM TO BE SOLVED: To prepare an electrification-reducing membrane capable of reducing undesirable influences on emitted electrons, excellent in stability and reproducibility and useful for an image formation device or the like by making a nitride of both a transition metal and aluminum, obtained under a specific condition, exist in the membrane. SOLUTION: This membrane is prepared by making a nitride of both a transition metal and silicon which is obtained by sputtering a target made of both at least one transition metal selected from the group consisting of Cr, Ti, Ta, Mo and W and aluminum (or aluminum nitride) exist in the membrane itself. The surface nitrification degree of aluminum, i.e., the weight ratio of (aluminum nitride/aluminum) in the nitride is >=60%. It is preferable to produce an image formation device containing both emissive elements and image formation members in an envelope and a spacer containing an electrification-reducing membrane having 10 nm-1 μm thickness, 10-7×Va2-105 Ωm resistivity and
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公开(公告)号：JPH117910A
公开(公告)日：1999-01-12
申请号：JP16089697
申请日：1997-06-18
Applicant: CANON KK
Inventor： OSATO YOICHI , OKAMURA YOSHIMASA , OGURI NOBUAKI , KURODA KAZUO , TAKAGI HIROTSUGU
Abstract: PROBLEM TO BE SOLVED: To provide a highly stable antistatic membrane for a spacer by removing the dispersion as much as a charge is removed in the surface of a highly resistive membrane, by secondary electrons emitted by hitting of an electron beam on the highly resistive membrane of the spacer in an image forming device. SOLUTION: This image forming device has an envelope keeping a vacuum atmosphere, an electron source to emit electrons, an image forming member having a phosphor emitting light by a collision of electrons, an acceleration electrode to accelerate electrons toward the image forming member, and a spacer as an atmospheric pressure resisting structure. In this case, the spacer 1020 is coated by a highly resistive membrane, and the spacer 1020 is treated by heat in advance at a higher temperature than the highest temperature in an assembling process of the device.
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公开(公告)号：JPH10340793A
公开(公告)日：1998-12-22
申请号：JP36095797
申请日：1997-12-26
Applicant: CANON KK
Inventor： TAKAGI HIROTSUGU , OSATO YOICHI , OGURI NOBUAKI , OKAMURA YOSHIMASA , KURODA KAZUO , KUSAKA TAKAO
Abstract: PROBLEM TO BE SOLVED: To provide an antistatic film, capable of reducing charging within a container containing an electron emission element by including a nitrogen compound which contains a transition metal and Al, Si, or B. SOLUTION: Nitrogen content of a nitrogen compound of aluminum, silicon, or boron is 60% or more. An antistatic film for a spacer which is easy to be controlled to a specific desirable resistance as the antistatic film and hardly varies the resistance value in a heating process, such as a frit sealing process in an oxidizing atmosphere is obtained. A spacer 10 is formed by forming an antistatic film 10c on the surface of an insulating base material. The spacer 10 is arranged to prevent the breakage or deformation of a vacuum envelope 8 caused by the atmospheric pressure caused by making the inside of the envelope 8 vacuum. An insulating base material 10a is preferably a material with high strength and high heat resistance, such as glass or ceramic in order to support the atmospheric pressure applied to a face plate 7 and a rear plate 2.
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