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1. 发明专利

JP2003315707A Multi-beam laser printer and horizontal step-out detection method for multi-beam laser scanning optical system 审中-公开
标题翻译：多波束激光扫描光学系统的多光束激光打印机和水平步进检测方法
公开(公告)号：JP2003315707A
公开(公告)日：2003-11-06
申请号：JP2002118660
申请日：2002-04-22
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： YAMAMOTO YUKIO , SUMIYOSHI MICHIO , SHOJI JUNICHI , MATSUO KAZUYOSHI , OTAKA MAKOTO , TAKEYA MASAHARU , SHIBUYA TAKESHI
IPC分类号： B41J2/44 , G02B26/10 , H04N1/036 , H04N1/113
摘要： PROBLEM TO BE SOLVED: To provide a method of detecting a horizontal step-out of a multi-beam laser scanning system with high accuracy by using simple constitution and processing.
SOLUTION: The horizontal step-out Td is detected from the difference between a beam detect signal pulse with T2 obtained when a 1st light emitting element is continuously driven and a pulse with Tw+Td when the driving is switched halfway from the 1st light emitting element to a 2nd light emitting element. Only one light emitting element is always driven before and after a rise and a fall of the beam detect signal, so that the influence of a difference in laser power is eliminated.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种通过简单的结构和处理以高精度检测多光束激光扫描系统的水平逐步退出的方法。解决方案：从第1发光元件连续驱动时获得的光束检测信号脉冲与第1发光元件连续驱动时的T2检测信号脉冲与当从第1发光元件的中途切换时的Tw + Td的脉冲之间的差检测出水平失步Td 发光元件连接到第二发光元件。始终在光束检测信号的上升和下降之前和之后驱动一个发光元件，从而消除了激光功率差的影响。版权所有（C）2004，JPO

2. 发明专利

JP2002333964A DISTRIBUTED PRINTING METHOD 失效
公开(公告)号：JP2002333964A
公开(公告)日：2002-11-22
申请号：JP2001141095
申请日：2001-05-11
申请人： HITACHI LTD
发明人： YAMAMOTO YUKIO , SATO TATSUNARI , MATSUNO JUNICHI
IPC分类号： B41J29/38 , B41J5/30 , G06F3/12
摘要： PROBLEM TO BE SOLVED: To realize a high speed printing by reducing the development processing from a printing job to printer data with respect to an arbitrary number of copies or division pattern when performing a distributed printing with a plurality of printers corresponding to printer data in the same format by dividing the printing job. SOLUTION: The distributed printing management driver 8 of a PC 1 divides a printing job only for one set of copy by page units, and converts it into printer command data through a printer driver 13, and stores the printer command data in a storage device 14, and then reads and edits the printer command data of pages assigned to each printer, and prepares distributed jobs for every printer of printers 3A-3C, and transmits the distributed job to each printer so that the printing can be carried out. Thus, the printing job is converted in a batch before divided regardless of the arbitrary number of copies or division pattern so that high speed printing can be performed by reducing the data development processing compared with the conventional manner where the printing job is divided for every printer, and then data is converted.

3. 发明专利

JP2002103715A PRINTER 失效
公开(公告)号：JP2002103715A
公开(公告)日：2002-04-09
申请号：JP2000303774
申请日：2000-10-03
申请人： HITACHI LTD
发明人： YAMASHITA TAICHIRO , MATSUNO JUNICHI , YAMAMOTO YUKIO
IPC分类号： B41J13/00 , B41J29/38 , B65H29/66 , B65H29/68 , B65H39/07
摘要： PROBLEM TO BE SOLVED: To obtain a printer in which print sheets printed by means of a plurality of printer engines are picked up in order and arranged while being sorted in the order of page without requiring additional sorting information disclosed in prior art. SOLUTION: A plurality of printer engines 100a, 100b and 100c are arranged along a collective carrying passage 110 and print sheets 1 printed by respective printer engines are sequentially taken into the collective carrying passage 110 and carried. Means 120 for sequentially stacking the print sheets 1 carried on the collective carrying passage 110 is disposed at the downstream end thereof and a controller 208 for controlling the printer engines and the collective carrying passage 110 designates the pages to be printed by each printer and the order thereof based on provided print information. Print sheets printed by respective printer engines are then sequentially taken into the collective carrying passage and stacked in the order of page by the stacking means.

4. 发明专利

JP2002044455A CALIBRATION METHOD OF COLOR LASER PRINTER AND TEST CHART 失效
公开(公告)号：JP2002044455A
公开(公告)日：2002-02-08
申请号：JP2000231402
申请日：2000-07-27
申请人： HITACHI LTD
发明人： SHIBUYA TAKESHI , YAMAMOTO YUKIO , URATA NAOYUKI , YAMADA TOSHIYUKI , HIRAYAMA NATSUHIKO
IPC分类号： B41J2/52 , B41J2/44 , G03G15/00 , G03G21/00 , G06T5/00 , H04N1/00 , H04N1/407 , H04N1/46 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To enable a calibration, having gradation characteristics using the visual observation of users, without having to specially prepare a reference image subjected to density control, and to contrive the stabilization of a reproducing image in the image output device of a color laser printer or the like. SOLUTION: A calibration method is constituted of a test chart 18, arranged with a test chart 6 of each color and a calculating means, which calculates a gradation correction table and downloads the table on a gradation correction circuit 3, on the basis of a value which is read from this test chart 18. Moreover, the chart 6 is constituted of a continuous region 10, where gradation is augmented stepwise, and a checkered check pattern of a reference region 11, which makes a comparison with this region 10. The parts of the region 11 respectively consist of the white ground of a paper in a highlight calibration part 7, the highest density of a solid pattern in a shadow calibration part 8 and a network point of a resolution rougher than that of the region 10 or tens of thousand-line pattern in an intermediate calibration part 9. As a result of such a constitution of the calibration method, a gradation correction value is calculated by the characteristic values of highlight, shadow and intermediate gradations, which are obtained only from visual data on the chart 18 printed from a printer.

5. 发明专利

JP2002007089A PRINTER DRIVER AND INFORMATION PROCESSOR 失效
公开(公告)号：JP2002007089A
公开(公告)日：2002-01-11
申请号：JP2000196277
申请日：2000-06-26
申请人： HITACHI LTD
发明人： YAMAMOTO YUKIO , KAMIO KEIJI , MATSUNO JUNICHI
IPC分类号： B41J29/38 , G06F3/12
摘要： PROBLEM TO BE SOLVED: To divide printing data from an application into plural groups with a simple operation, to designate a printing condition and a printer performing printing at every group and to output data. SOLUTION: A division printing managing printer driver 9 receives printing data from the application 7, divides it in accordance with group division information, printing printer designation information and printing parameter setting information and generates a division job. A printer driver corresponding to the printers designated for each generated division jobs is called from printer drivers A10 to D13 and a printing parameter is set. The division job is transferred to the printer driver, it is entrusted with a processing and printing is performed.

6. 发明专利

JP2001110547A ION GENERATOR AND ELECTROSTATIC RECORDER EQUIPPED WITH ION GENERATOR 失效
公开(公告)号：JP2001110547A
公开(公告)日：2001-04-20
申请号：JP28512799
申请日：1999-10-06
申请人： HITACHI LTD
发明人： KIYONO TASAKU , YAMAMOTO YUKIO , KAMIO KEIJI
IPC分类号： B41J2/415 , G03G15/05 , H01T19/00 , H05F3/04
摘要： PROBLEM TO BE SOLVED: To provide an ion generator with an improved life. SOLUTION: It comprises an inducing electrode 5 formed on a substrate 3 made of a nonconductor, a dielectric layer 7 covering the induction electrode 5 on the substrate 3, an ion generating electrode 9 formed on the dielectric layer 7 and a protection layer 11 to cover at least the ion generating electrode 9. On the protection layer 11 is formed a power removal means, namely a groove section 19, the width thereof being smaller than the ion generating electrode and the bottom thereof being the center section of the surface of the ion generating electrode. In this structure electric charge of ion attached to the protection layer 11 is absorbed and removed by the power removal means 19 and there is no electrification and accumulation of electric charge on the surface of the protection layer 11, thereby breakdown of the protection layer 11 being prevented, which means an improved life of the ion generator 1.

7. 发明专利

JPH09213034A DEVICE FOR WRITING SERVO INFORMATION AND METHOD THEREFOR 失效
公开(公告)号：JPH09213034A
公开(公告)日：1997-08-15
申请号：JP2232696
申请日：1996-02-08
申请人： HITACHI LTD
发明人： YAMAMOTO YUKIO , YOSHIDA TAKASHI , TAKATSUKA AKIO , GOTOU MARUTOMO
IPC分类号： G11B21/10 , B81C3/00
摘要： PROBLEM TO BE SOLVED: To write a high quality servo information dealing with highly density recording technique such as a 2-step actuator and contact recording, etc. SOLUTION: The device is provided with an optical positioning device 14 having an optical head 12 and a head displacement sensor positioning device 17 having a head displacement sensor 16. Light is projected from the optical head 12 to a cylindrical mirror 13 on a carriage 4, and based on an angular change of reflected light at this time, a carriage displacement Xdc is outputted by a carriage displacement detecting circuit 15. On the other hand, a displacement with the head on a slider 2 is detected by a head displacement sensor 16 positioned in a prescribed position, and based on this detecting result, a head displacement Xdh is outputted by a head displacement detecting circuit 18. Then, a VCM 5 is driven and controlled by a VCM control circuit 6 in order to make the carriage displacement Xdc and the head displacement Xdh prescribed target values respectively, thus performing the head positioning.

8. 发明专利

JPS6245161A SEMICONDUCTOR INTEGRATED CIRCUIT DEVICE 失效
公开(公告)号：JPS6245161A
公开(公告)日：1987-02-27
申请号：JP18413885
申请日：1985-08-23
申请人： HITACHI LTD
发明人： YAMAMOTO YUKIO , FURUKI AKIRA
IPC分类号： H01L27/04 , H01L21/822 , H01L27/02
摘要： PURPOSE:To protect resistance element from breakdown caused by curernt concentration and improve reliability of an IC by connecting a plurality of the straight resistance elements with conductive layers composed of different material from the resistance material. CONSTITUTION:A field insulating film 2 is provided on a P type semiconductor substrate 1 and an N-channel type MISFET 4, an N-channel tpe clamping MISFET 5, resistance elements 6 and a bonding pad 7 are formed on it. Conductive layers 8 are connected to them through contact holes 9. The resistance element 6 are composed of polycrystalline silicon layers and arranged linearly and connected in series with conductive layers 8E. Therefore, curved parts are eliminated from individual resistance elements 6 and current concentration can be avoided so that the breakdown of the resistance elements can be avoided and the reliability of the IC can be improved.

9. 发明专利

JPS6060205A TURBINE CASING OF CENTRIFUGAL PRESSURE FEEDER 失效
公开(公告)号：JPS6060205A
公开(公告)日：1985-04-06
申请号：JP16692683
申请日：1983-09-09
申请人： MAZDA MOTOR , HITACHI LTD
发明人： YAMAMOTO YUKIO , HANANO KAZUYOSHI , ANDOU HIROYUKI
IPC分类号： F02B39/00 , F01D9/02 , F01D25/24
摘要： PURPOSE:To decrease the heat distortion while securing the oxidation resistance, and increase the suppercharging efficiency by reducing a clearance by a method wherein an aluminum diffusing layer is formed to be uniform thickness of 40- 250mum on the turbine casing internal wall of a suppercharger by an aluminum pack method. CONSTITUTION:An aluminum diffusing layer 6 is formed to be uniform layer thickness of 40-250mu on the internal wall of a turbine casing 1 of a suppercharger by an aluminum pack method. Thereby, the oxidation resistance of an internal wall is improved, also the heat distortion of a casing 1 can be decreased.

10. 发明专利

JP2000326546A ELECTROSTATIC RECORDING APPARATUS 失效
公开(公告)号：JP2000326546A
公开(公告)日：2000-11-28
申请号：JP13694899
申请日：1999-05-18
申请人： HITACHI LTD
发明人： KIYONO TASAKU , YAMAMOTO YUKIO , KINOSHITA YASUSHI , KAMIO KEIJI
IPC分类号： B41J2/415 , B41J2/40
摘要： PROBLEM TO BE SOLVED: To improve a resolution without increasing a static latent image form time. SOLUTION: In the electrostatic recording apparatus, an ion inadiation control means 4 is set to one face of a substrate of an insulating material, a plurality of first electrodes 15 extend in a direction perpendicular to a relative movement direction 31 of a recording medium, a plurality of second electrodes 13 are disposed to the other face of the substrate in a direction intersecting the first electrodes 15, and a plurality of pass holes 17 for passing ions are formed to a position where the first electrodes 15 and second electrodes 13 intersect. In the apparatus, each of the second electrodes 13 is divided to four or more unit electrodes 13 in the relative movement direction of the recording medium. The plurality of first electrodes 15 corresponding to the unit electrodes 13 are separated to groups of the number of the pass holes 17 of each unit electrode 13. An impressed voltage of the first electrodes 15 is sequentially switched for each group to control the ion projection.

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