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51. 发明专利

JPH04132451A OPTICAL SCANNER 失效
公开(公告)号：JPH04132451A
公开(公告)日：1992-05-06
申请号：JP25187090
申请日：1990-09-25
申请人： HITACHI LTD
发明人： MARUO SEIJI , HORI YASURO , SUZUKI YASUAKI
IPC分类号： H04N1/113 , G02B26/12 , G02B27/00 , H04N1/053 , H04N1/12
摘要： PURPOSE:To correct distortion without use of a complicated optical system by providing a rotary angular speed control means controlling the rotary angular speed of a scanning rotary mirror in response to the scanning position at a scanning face to the scanner. CONSTITUTION:A rotary angular speed control means 1302 controlling the rotary angular speed of a scanning rotary mirror 1801 in response to the scanning position at a scanning face is provided to the scanner. Then the drive speed of a scanning motor 104 is varied so that the scanning speed by a spot in one scanning period is constant. Since the distortion on the scanning face is corrected, the optical scanner able to correct distortion sufficiently at a low cost is provided without use of an optical means correcting the distortion.

52. 发明专利

JPH0429214A LIGHT BEAM SCANNER 失效
公开(公告)号：JPH0429214A
公开(公告)日：1992-01-31
申请号：JP13611890
申请日：1990-05-25
申请人： HITACHI LTD
发明人： MARUO SEIJI , SUZUKI YASUAKI , HONDA TATSUO , SHIMADA AKIRA , HORI YASURO
IPC分类号： G02B26/10 , H04N1/04 , H04N1/113
摘要： PURPOSE:To correct the deviation of optical path difference with a simple structure by approximately matching the axial line of rotation of a scanning mirror to a line including the point on which a light beam is made incident on a scan face. CONSTITUTION:Cylindrical lenses 22 and 23 which shape the laser light emitted from a light source (semiconductor laser oscillator) 1 to spot light, a scanning mirror 33 which scans this spot light, a rotating motor 32 which rotates the scanning mirror 33, and an image forming lens 26 which uses a reflection plate 27 to reflect scanned light to form its image on a recording member 28 are provided. The axial line of rotation of the scanning mirror 33 approximately coincides with a line including the point on which the light beam is made incident on the scan face. Therefore, the optical path difference is approximately eliminated because the laser light is made incident on only one point of the scan line which approximately coincides with the axial line of rotation even during rotation of the scanning mirror 33. Thus, the deviation of optical path difference is corrected with an image forming lens 26 having the simple structure.

53. 发明专利

JPH03267976A HEAT ROLL FOR FIXING 失效
公开(公告)号：JPH03267976A
公开(公告)日：1991-11-28
申请号：JP6706890
申请日：1990-03-19
申请人： HITACHI LTD
发明人： SUZUKI YASUAKI , MARUO SEIJI , HONDA TATSUO , SHIMADA AKIRA
IPC分类号： G03G15/20 , H05B3/00
摘要： PURPOSE:To uniformize the temperature distribution of a heat roll surface by providing a second metal which has a higher heat conductivity than that of a metallic pipe on the surface of its metallic pipe. CONSTITUTION:In a printing engine of an electrophotographic system, the heater of a direct heating system is used for the heat roll 1 for fixing. And the first metallic pipe 21 incorporating a heat generating device 22 which has a different heat generating distribution in a length direction and the second metal 23 which has the higher heat conductivity than that of the first metallic pipe 21 on its surface are arranged. In this case, since the heat conductivity of the second metallic pipe 23 is the higher than that of the first metallic pipe 21, non-uniform heat on the surface of the first metallic pipe 21 is made to flow from a high place to a low place. Thus, the temperature of the surface of the heat roll 1 is uniformized.

54. 发明专利

JPH02170690A COMMUNICATION CONFERENCE SYSTEM 失效
公开(公告)号：JPH02170690A
公开(公告)日：1990-07-02
申请号：JP32333388
申请日：1988-12-23
申请人： HITACHI LTD
发明人： NAKAMURA KOZO , MARUO SEIJI
IPC分类号： H04N7/15 , H04M3/56
摘要： PURPOSE:To set a unique conference between communication conference terminals by discriminating and managing the conference in the communication conference terminal, which is used by plural users, in accordance with AND conditions of a conference opener discriminator, a conference discriminator, and a conference other party discriminator. CONSTITUTION:The conference is discriminated and managed in accordance with AND conditions of a conference opener name, a conference name, a conference other party name, and the day fixed for the conference. The conference and conference materials are handled as files managed by a hierarchial directory structure. A directory name which corresponds to a user name registered in a communication conference terminal A10, which manages a file 110, in 1:1 is stored in this file 110. When Taro Hitachi indicates development materials and himself to the communication conference terminal A10 as the material name and the material offerer respectively, a file 200 of a file name D1(190) is selected by a directory name D1(180). Conference materials stored in the file 200 are opened to permit the access to conference materials.

55. 发明专利

JPH11183743A OPTICAL BRANCHING/CONNECTING UNIT AND OPTICAL TRANSMISSION EQUIPMENT USING THE SAME 失效
公开(公告)号：JPH11183743A
公开(公告)日：1999-07-09
申请号：JP35129697
申请日：1997-12-19
申请人： HITACHI LTD
发明人： SUGITA TATSUYA , MARUO SEIJI
IPC分类号： G02B6/28 , G02B6/122 , G02B6/126
摘要： PROBLEM TO BE SOLVED: To provide an optical branching/connecting unit reducing losses in a transmitting optical signal and a received optical signal and capable of efficiently supplying especially a received optical signal to an optical signal receiving part. SOLUTION: The optical branching/connecting unit has an input end face 7 opposed to an optical signal transmission part 10, an output end face 8 opposed to an optical signal receiving part 11, an I/O end face 9 connected to an optical transmission line 12, a 1st optical waveguide 2 of which one end is connected to the input end face 7, a 2nd optical waveguide 3 of which one end is connected to the output end face 8, and a common optical waveguide 4 of which one end is connected to the I/O end face 9 and other end is connected to the other ends of the 1st and 2nd optical waveguides 2, 3. The cross- sectional areas of the 1st optical waveguide 2 on respective connection parts 5 of the 1st, 2nd and common optical waveguides 2 to 4 are smaller than the cross-sectional area of the 2nd optical waveguide 3, the cross sectional area of the 2nd optical waveguide 3 is maximum on the connection part 5 and is successively reduced in the direction of the output end face 8.

56. 发明专利

JPH10119671A VEHICLE INFORMATION INPUT/OUTPUT DEVICE, VEHICLE INFORMATION CONTROL DEVICE, VEHICLE INFORMATION MULTIPLEX-TRANSMISSION SYSTEM, VEHICLE INFORMATION PROCESSING METHOD AND STORAGE MEDIUM 失效
公开(公告)号：JPH10119671A
公开(公告)日：1998-05-12
申请号：JP27243596
申请日：1996-10-15
申请人： HITACHI LTD
发明人： MARUO SEIJI , SUGITA TATSUYA
IPC分类号： B60R16/023 , B60R16/02 , H04L12/40
摘要： PROBLEM TO BE SOLVED: To easily, quickly and efficiently receive information, even in great volume. SOLUTION: A central control unit 200 to manage received data in a vehicle and plural local units 300-700 connected thereto via lines 101 are provided. At least parts of the local units (a communication control unit 300 and an image/sound control unit 400) and the central control unit 200 have respective asynchronous communication means for mutual asynchronous communication.

57. 发明专利

JPH1068831A OPTICAL WAVEGUIDE AND ITS PRODUCTION 失效
公开(公告)号：JPH1068831A
公开(公告)日：1998-03-10
申请号：JP22804396
申请日：1996-08-29
申请人： HITACHI LTD
发明人： SUGITA TATSUYA , MARUO SEIJI
IPC分类号： G02B6/13
摘要： PROBLEM TO BE SOLVED: To make it possible to produce an optical waveguide of a small diameter and to produce the optically homogeneous optical waveguide having small propagation loss by making the light formed as an approximate non-diffracted beam incident on a photosensitive medium and making the refractive index of the photoirradiated part of this photosensitive medium higher than the refractive index of the non-photoirradiated part. SOLUTION: A UV beam 10 which is a beam for forming a waveguide is made incident as nearly parallel beams on axicon 20 made of quartz glass which is an approximate non-diffracted beam conversion means. This axicon 20 is a conical prism. The beam is made into the approximate non-diffracted beam by the axicon 20. The approximate non-diffracted beam is a beam which propagates while maintaining the nearly the constant beam diameter of a certain specified distance. This approximate non-diffracted beam is cast to the photosensitive resin 30 which is the photosensitive resin on a substrate 32 and forms the optical waveguide in the photoirradiated part of the photosensitive resin 30. The refractive index of the photoirradiated part of the photosensitive medium is made higher than the refractive index of the non-photoirradiated part in such a manner, by which the optical waveguide is formed.

58. 发明专利

JPH07285236A IMAGE FORMATION AND IMAGE FORMING DEVICE 失效
公开(公告)号：JPH07285236A
公开(公告)日：1995-10-31
申请号：JP8127194
申请日：1994-04-20
申请人： HITACHI LTD
发明人： SUGITA TATSUYA , ARIMOTO AKIRA , HOSHI NOBUYOSHI , KOBAYASHI SHINYA , MARUO SEIJI , TAKUMA YASUO , MITSUYA TERUAKI
IPC分类号： B41J2/385 , G03G15/05 , G03G15/20 , G03G15/22 , G03G21/10
摘要： PURPOSE:To provide an image formation device which forms an image using a toner and is free from the deterioration of an image quality due to a fog. CONSTITUTION:A recording medium 150 is transported to an area under a toner supply means 212 by a transport roller 240. A toner sticks to the transparent drum 200 of the toner supply means 212, and light originating from an optical system 90 in the transparent drum 200 is received by an image forming area. The toner is desorbed from the transparent drum 200 by an optical force, and at the same time, becomes fused by the energy of the same light, fixing to the recording medium 150. After that, the unnecessary portion of the toner is removed using a cleaner 220. Consequently, since the cleaning is possible by distinguishing a toner which receives light device which does not deteriorate an image quality due to a fog. is obtained. Further, the device can be made compact as a photosensitive medium and a fixing are not used.

59. 发明专利

JPH06144648A ELECTROPHOTOGRAPHIC RECORDING DEVICE 失效
公开(公告)号：JPH06144648A
公开(公告)日：1994-05-24
申请号：JP29721792
申请日：1992-11-06
申请人： HITACHI LTD
发明人： MARUO SEIJI , HIRANO SHUICHI , OGUMA SHINGO , HOSODA MASAHITO
IPC分类号： B41J13/00 , B65H7/12 , G03G15/00 , G03G15/36 , G03G21/00
摘要： PURPOSE:To enable the relaxation of recording sheet conveying speed or conveying accuracy demanded to an electrophotographic recording device from an information processing system (facsimile device). CONSTITUTION:An electrophotographic recording device controlled in recording sheet conveyance by a facsimile device is provided with a photoconductor drum 1; a charged part 2, an exposure part 3, a developing part 4, a transfer part 5 and a cleaner part 6 disposed around the photoconductor drum 1; and recording paper delivery rollers 8, 9, a recording paper passage sensor 10 and register rollers 7. The recording sheet conveying speed or conveying accuracy demanded to the electrophotographic recording device from the facsimile device is controlled to be relaxed using a first timer generating means for starting a timer at the exposure starting time of the exposure part 3 and stopping the rotation of the register rollers 7 by time-out, and a second timer generating means for detecting the overlap feed of recording sheets at the conveyed time by time-out in cooperation with the recording sheet passage sensor 10.

60. 发明专利

JPH0413355A COMMUNICATION TERMINAL EQUIPMENT 失效
公开(公告)号：JPH0413355A
公开(公告)日：1992-01-17
申请号：JP11558190
申请日：1990-05-01
申请人： HITACHI LTD
发明人： MARUO SEIJI , NAKAMURA KOZO
IPC分类号： H04M11/10
摘要： PURPOSE:To realize a communication application function offering convenience of use by decoding a sound data stored in a storage means in advance and outputting the decoded data through a command of an opposite terminal equipment while coding a voice signal in real time and sending/receiving it as a sound data. CONSTITUTION:A data for real time voice communication with a communication opposite party is processed by a PCM CODEC 1(102) and an ADPCM CODEC 1(103), a voice memory data is subject to parallel processing by a PCM CODEC 2(108) and an ADPCM CODEC 2(109) to input and output the result. The received data is demultiplexed by a multiplexer circuit, either of a real time voice data 302 and an MPU control data 303 or the both are stored in a voice memory 112, they are decoded by the ADPCM CODEC 2(109) and the PCM CODEC 2(108), the other data resulting from demultiplexing the received data by the multiplexer circuit is mixed by a mixing circuit 105 and outputted from a speaker 104.

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