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1. 发明专利

JP2002050083A OPTICAL RECORDING MEDIUM, METHOD AND DEVICE FOR PROCESSING INFORMATION IN OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2002050083A
公开(公告)日：2002-02-15
申请号：JP2000230054
申请日：2000-07-28
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI , SAKATA TADAFUMI
IPC分类号： G11B7/24 , G11B7/004 , G11B7/0055 , G11B7/007 , G11B7/125 , G11B19/02 , G11B19/04 , G11B21/12
摘要： PROBLEM TO BE SOLVED: To provide an optical recording medium and a method and a device for processing information in the optical recording medium to carry out at least one of recording, reproducing and erasing information by near field light generated from a near field light generating device, and to provide an optical recording medium and a method and a device for processing information in the optical recording medium such that even when the medium touches the near field light generating device, damages in the information recording region can be avoided and that whether the near field light generating device is damaged or not can be detected. SOLUTION: In the optical recording medium 6 to carry out at least one of recording, reproducing and erasing information by near field light L generated from the near field light generating device 50, the medium has a recording region 6b to record and hold at least information and a specified region (diagnosis region) except for the recording region 6a.

2. 发明专利

JP2000268366A INFORMATION RECORDING/ERASING METHOD AND APPARATUS FOR OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2000268366A
公开(公告)日：2000-09-29
申请号：JP7543999
申请日：1999-03-19
申请人： MINOLTA CO LTD
发明人： OGURA KAZUYUKI , KOJIMA SEIJI
IPC分类号： G11B7/244 , G11B7/00 , G11B7/0045 , G11B7/0055 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To provide a method and an apparatus for recording/erasing information on/from an optical recording medium by utilizing photoisomerization reaction between two isomers of a photochromic molecule in which photochromic reaction efficiency can be enhanced when information is recorded or erased and an optical recording medium used in the method and apparatus. SOLUTION: In the recording medium M where information can be recorded or erased by utilizing a photoisomerization reaction between two isomers of a photochromic molecule, information is recorded or erased using such a medium M as the transition moments of two isomers have a substantially orthogonal relationship at a wavelength where two isomers of a molecule oriented in a predetermined direction exhibit light absorption. In such an information recorder/ eraser, a control section 300 controls the apparatus 100 to regulate the light L being emitted from a light source 31 when information is recorded into a linear polarized light L' having a plane of polarization substantially parallel with the transition moment of one isomer.

3. 发明专利

JPH10274864A ELECTROPHOTOGRAPHIC LIQUID DEVELOPER 失效
公开(公告)号：JPH10274864A
公开(公告)日：1998-10-13
申请号：JP8103597
申请日：1997-03-31
申请人： MINOLTA CO LTD
发明人： MIYAMOTO HIDETOSHI , FUJIWARA TOSHIMITSU , KOJIMA SEIJI
IPC分类号： G03G9/12
摘要： PROBLEM TO BE SOLVED: To obtain an electrophotographic liq. developer excellent in aging stability of the electrostatic chargeability of toner particles by incorporating specified colored fine particles. SOLUTION: This electrophotographic liq. developer contains at least colored fine particles (toner) contg. 0.5-5.0 wt.% barium sulfate of 0 to about 5.0 wt.%, toner particles are liable to precipitate because of high specific gravity of barium sulfate.

4. 发明专利

JPH07128951A ELECTROSTATIC CHARGE DEVICE 失效
公开(公告)号：JPH07128951A
公开(公告)日：1995-05-19
申请号：JP27166693
申请日：1993-10-29
申请人： MINOLTA CO LTD
发明人： OSAWA MOCHIKIYO , DOI ISAO , KOJIMA SEIJI
IPC分类号： G03G15/02 , A46B15/00
摘要： PURPOSE:To provide a high reliable electrostatic charge device constituted so that brush mark-like stripe-state image noise is improved, an excellent image can be obtained, electrostatic charge performance is not deteriorated and the brush mark-like stripe-state image noise is prevented from being remarkably caused when the device is used for a long term. CONSTITUTION:The electrostatic charge device 2 for electrostatically charging the surface of a body to be electrostatically charged 1 is provided with plural contacts arranged so that they can be moved to a contact position where they rub the surface of the body 1 and a non-contact position, a regulation means which is arranged by abutting on the contacts and which regulates the moving state of the contacts to the non-contact position from the contact position and a means impressing an electrostatic charge voltage between the contacts and the body 1 in order to electrostatically charge the surface of the body 1.

5. 发明专利

JPH07120999A ELECTROSTATIC CHARGING DEVICE 失效
公开(公告)号：JPH07120999A
公开(公告)日：1995-05-12
申请号：JP26922593
申请日：1993-10-27
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI , DOI ISAO , OSAWA MOCHIKIYO
IPC分类号： G03G15/02
摘要： PURPOSE:To provide an electrostatic charging device with which good images are obtainable continuously and which has high reliability even in a high-speed region by rotatably arranging plural sheet of films. CONSTITUTION:A member to be electrostatically charged is electrostatically charged by applying a potential difference between this member to be electrostatically charged and a frictionally electrifying member while making frictionally electrifying member rub this the surface of the member to be electrostatically charged. The frictionally electrifying member consists of the plural films which are rotatably arranged. Namely, the electrostatic charging device 2 is disposed with, for example, 8 sheets of film materials 12 at circumferentially equal intervals on the surface of a conductive substrate 11. A metallic shaft made of SUS303 having 8mm diameter and 370mm length is used for this conductive substrate 11. The film materials 12 mainly composed of nylon having 50mum film thickness are adhered to the surface of the conductive substrate 11 by applying an epoxy adhesive to adhesive allowances 13. At this time, conductive paste is applied to the circumferential parts 14 to 16 of the adhesive allowances 13 to electrically connect the conductive substrate 11 and the film materials 12.

6. 发明专利

JP2002230817A INFORMATION RECORDING AND REPRODUCING DEVICE 失效
公开(公告)号：JP2002230817A
公开(公告)日：2002-08-16
申请号：JP2001019731
申请日：2001-01-29
申请人： MINOLTA CO LTD
发明人： OGURA KAZUYUKI , HATANO HIROSHI , KOJIMA SEIJI
IPC分类号： G02B5/00 , G02B17/08 , G11B7/135
摘要： PROBLEM TO BE SOLVED: To improve the stability and the reliability of reproduced information in reproducing of information in an information recording and reproducing device. SOLUTION: A light shielding member 38 is arrange in the optical path of a light beam reflected on a recording medium 8, between a solid immersion mirror 1 and an optical detector 37, the luminous flux of the reflected light is transformed into a ring-belt shaped light. Namely, the device is so composed that the ring-belt shaped light L21 is detected in the optical detection process and when the light beam for reproducing information is entered to the solid immersion mirror 1, the light beam is made incident in such a state as a light beam L1 including the ring-belt region which is nearly the same as the ring-belt region used in the optical detection process, or a region inside the ring-belt region.

7. 发明专利

JP2001184697A REPRODUCING DEVICE 失效
公开(公告)号：JP2001184697A
公开(公告)日：2001-07-06
申请号：JP36261499
申请日：1999-12-21
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI
IPC分类号： G11B7/135
摘要： PROBLEM TO BE SOLVED: To provide a reproducing device capable of efficiently detecting the modulated reflection light of a near field light radiated to a recording medium. SOLUTION: This reproducing device 1 is provided with a probe 40 for radiating a near field light to a recording medium 9, and a photodetection portion 45 for detecting a light 48 obtained by modulating the radiated near field light at the recording medium 9. This probe 40 is arranged such that the main axis MP of the radiated near field light is inclined by an angle α with respect to a vertical line VL to the recording surface 9a of the recording medium 9. In addition, the photodetection portion 45 is arranged such that the main axis SP of detected sensitivity is inclined by an angle β with respect to the vertical line VL to the recording surface 9a of the recording medium 9. The inclination angles α and β are approximately equal to each other. Thus, the modulated reflection light 48 of the near field light radiated to the recording medium 9 is efficiently detected.

8. 发明专利

JP2001184661A METHOD AND DEVICE FOR REPRODUCING INFORMATION FROM OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2001184661A
公开(公告)日：2001-07-06
申请号：JP36907499
申请日：1999-12-27
申请人： MINOLTA CO LTD
发明人： KOBAYASHI KOSEI , KOJIMA SEIJI
IPC分类号： G11B7/005 , G01J1/04 , G01Q60/18 , G01Q80/00 , G11B7/12 , G01N13/10
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for reproducing information capable of nearly uniformizing the influence from heating caused by heat from the near-field light emitting part of a near-field light generating device even in any position of the surface of an optical recording medium when information is reproduced and facilitating a heat countermeasure for preventing the bad influence from heat caused by the near-field light generating device. SOLUTION: The information reproducing device, which reproduces information from the optical recording medium 5 whose surface 5a is moved relatively to the device 100 by using near-field light L generated from the near-field light generating device 100, is provided with an optical recording medium storing part 10, a driving device 6 for moving the surface 5a of the optical recording medium 5 stored in the storing part 10, a speed control part CONT for controlling a moving speed of the surface 5a. When information is reproduced, the relative moving speed of the part facing the near-field light generating device 100 of the surface 5a of the optical recording medium moved by the driving device 6 is nearly set to a constant relative to the device 100 by the speed control part CONT.

9. 发明专利

JP2001049244A PHOTOCHROMIC MATERIAL AND OPTICAL RECORDING MEDIUM 失效
公开(公告)号：JP2001049244A
公开(公告)日：2001-02-20
申请号：JP22119499
申请日：1999-08-04
申请人： MINOLTA CO LTD
发明人： OGURA KAZUYUKI , KOJIMA SEIJI
IPC分类号： G11B7/244 , C09K9/02 , G03C1/73 , G11B7/24
摘要： PROBLEM TO BE SOLVED: To obtain a photochromic material that can be synthesized by relatively few reactions in relatively high yields and can give a ring-opening product having an absorption band reaching the vicinity of the visible region by using a diarylethene compound. SOLUTION: The diarylethene compound is represented by formula 1-5 (wherein R1 and R2 are each H, an alkyl, or an alkoxy; and A is a fused polycyclic aromatic group or a group derived by the removal of one H atom from a polyphenyl group). When a photochromic material is utilized in an optical recording medium, it needs to exhibit good repetition durability and thermal irreversibility in the recording, deletion, and reproduction of information. The diarylethene compound, especially, a diarylethene compound composed of a perfluorocyclopentene ring and two aryl groups bonded thereto satisfies the above requirements, is relatively simple in the route and step of synthesizing the material, and can be synthesized in high yields. The objective diarylethene compound can be obtained through a route of synthesis including steps of 1-1 to 1-5.

10. 发明专利

JP2000132861A METHOD AND DEVICE FOR GENERATING NEAR FIELD LIGHT, AND OPTICAL RECORDING HEAD USING NEAR FIELD LIGHT 失效
公开(公告)号：JP2000132861A
公开(公告)日：2000-05-12
申请号：JP30495798
申请日：1998-10-27
申请人： MINOLTA CO LTD
发明人： KOJIMA SEIJI
IPC分类号： G11B7/135 , G11B7/00 , G11B7/004
摘要： PROBLEM TO BE SOLVED: To provide a method and a device for generating near field light, capable of obtaining high intensity near field light and limiting the generation of the near field light to a region sufficiently smaller than a wavelength of incident light, and to provide an optical recording head which records information on a recording medium by using near field light and which is able to perform recording by emitting a smaller spot size and stronger intensity of near field light than those for a conventional optical recording head. Moreover the head device is able to record information at a higher rate compared with a conventional near field light generating device and also to cope with a large capacity optical recording as well as minute optical recording. SOLUTION: In the near field light generating device 100 for embodying the near field light generating method, a part of an optical path 40 is formed of a total reflection plane 7 of a prism 6 (an example of a whole reflection member), and the whole reflection plane 7 of an optical resonator 50 is formed in such way that the light 4 traveling in the optical path 40 is wholly reflected by the whole reflection plane 7. A mask layer 9 (an example of a mask) having a small aperture 10 for limiting a near field light generating region is provided on the rear side 7' of the side wholly reflecting the light emitted from a light source 1.

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