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1. 发明专利

DE68928805T2 未知
公开(公告)号：DE68928805T2
公开(公告)日：1999-04-22
申请号：DE68928805
申请日：1989-03-21
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： UMEDA TAKAO , MIYASAKA TORU , NAMIKAWA OSAMU , KOMATSU ISAMU
IPC分类号： G03G15/00 , G03G15/02 , G03G21/00
摘要： The present invention provides a diagnosis system for an electrostatic recording apparatus. The system comprises an electrostatic recording apparatus including means for generating data indicative of a state of the electrostatic recording apparatus; and an information processing apparatus separately located from the electrostatic recording apparatus and including means for receiving the data from the electrostatic recording apparatus, and means for performing diagnosis of the electrostatic recording apparatus based on the data indicative of the state of the electrostatic recording apparatus.

2. 发明专利

DE68928805D1 未知
公开(公告)号：DE68928805D1
公开(公告)日：1998-10-08
申请号：DE68928805
申请日：1989-03-21
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： UMEDA TAKAO , MIYASAKA TORU , NAMIKAWA OSAMU , KOMATSU ISAMU
IPC分类号： G03G15/00 , G03G15/02 , G03G21/00
摘要： The present invention provides a diagnosis system for an electrostatic recording apparatus. The system comprises an electrostatic recording apparatus including means for generating data indicative of a state of the electrostatic recording apparatus; and an information processing apparatus separately located from the electrostatic recording apparatus and including means for receiving the data from the electrostatic recording apparatus, and means for performing diagnosis of the electrostatic recording apparatus based on the data indicative of the state of the electrostatic recording apparatus.

3. 发明专利

DE68918313T2 未知
公开(公告)号：DE68918313T2
公开(公告)日：1995-03-02
申请号：DE68918313
申请日：1989-03-21
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： UMEDA TAKAO , MIYASAKA TORU , NAMIKAWA OSAMU , KOMATSU ISAMU
IPC分类号： G03G15/00 , G03G15/02 , G03G21/00
摘要： The present invention provides a diagnosis system for an electrostatic recording apparatus. The system comprises an electrostatic recording apparatus including means for generating data indicative of a state of the electrostatic recording apparatus; and an information processing apparatus separately located from the electrostatic recording apparatus and including means for receiving the data from the electrostatic recording apparatus, and means for performing diagnosis of the electrostatic recording apparatus based on the data indicative of the state of the electrostatic recording apparatus.

4. 发明专利

DE68918313D1 未知
公开(公告)号：DE68918313D1
公开(公告)日：1994-10-27
申请号：DE68918313
申请日：1989-03-21
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： UMEDA TAKAO , MIYASAKA TORU , NAMIKAWA OSAMU , KOMATSU ISAMU
IPC分类号： G03G15/00 , G03G15/02 , G03G21/00
摘要： The present invention provides a diagnosis system for an electrostatic recording apparatus. The system comprises an electrostatic recording apparatus including means for generating data indicative of a state of the electrostatic recording apparatus; and an information processing apparatus separately located from the electrostatic recording apparatus and including means for receiving the data from the electrostatic recording apparatus, and means for performing diagnosis of the electrostatic recording apparatus based on the data indicative of the state of the electrostatic recording apparatus.

5. 发明专利

CA1325241C ELECTROSTATIC RECORDING APPARATUS, METHOD OF CONTROLLING THEAPPARATUS, AND METHOD OF EVALUATING LIFE OF PHOTOCONDUCTIVE MEMBER OF ELECTROSTATIC RECORDING APPARATUS 未知
公开(公告)号：CA1325241C
公开(公告)日：1993-12-14
申请号：CA594356
申请日：1989-03-21
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： UMEDA TAKAO , MIYASAKA TORU , NAMIKAWA OSAMU , KOMATSU ISAMU
IPC分类号： G03G15/00 , G03G15/02 , G03G21/00
摘要： A potential of a reference potential measure section is set to a desired value of a potential of a drum surface (charge receptive surface) such that a potential of the reference potential measure section and a potential of the charge receptive surface are detected by a surface potential detect device during a rotation of the drum to obtain a difference between the values of the measured potential, so that an operation of a charger is controlled to be reduced to zero, thereby changing the potential of the charge receptive surface. This enables the surface potential to be precisely controlled without necessitating a frequent calibration of the surface potential detect device. In addition, the potential of the reference potential measure section is appropriately set depending on a develop condition so as to prevent a toner, when the portion passes a developer at a position over a circumferential area of the drum, from being fixed thereonto. Moreover, a potential of the reference potential detect section and a potential of the charge receptive surface are detected by use of the surface potential detect device so as to examine a difference therebetween and a distribution thereof, which enables a change as well as an irregular variation of the potential due to deterioration of the charge receptive surface to be analyzed. based on the analysis, it is possible to detect the deterioration of the photoconductive body as the charge receptive surface so as to evaluate the life thereof. Furthermore, when an information processing system is configured by combining a computer with an electrostatic recording apparatus according to the present invention, there can be provided a picture quality control system effecting a precise control depending on a characteristic of the photoconductive body.

6. 发明专利

JPH11328526A BOOK VENDING SYSTEM 失效
公开(公告)号：JPH11328526A
公开(公告)日：1999-11-30
申请号：JP13032998
申请日：1998-05-13
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： FUJII MASARU , MIYASAKA TORU , KOBAYASHI SHINYA , NAKANO HIROSHIGE , NAKAJIMA KEISUKE , KITAI TADASHI , NAKAMURA TOSHIAKI
IPC分类号： B42C19/00 , B65G61/00 , G06F3/12 , G06Q10/00 , G06Q30/06 , G06Q50/00 , G06Q50/04 , G07F11/70 , G06F17/60
摘要： PROBLEM TO BE SOLVED: To book-bind and sell a costomized book in accordance with specifications demanded by respective consumers. SOLUTION: A bookbinding instruction terminal 2a provides a GUI which supports an order procedure of a purchaser such as selection of book design, setting of a work structure or the like and transmits set contents on the GUI to a book database server 1. Thus, the book database server 1 retrieves a data base which registers cover data, writing data or the like and transmits the retrieval result (the book data, cover picture data, background pattern picture data, price information and so on) to a printer device 3a with a bookbinding function as the bookbinding information. The printer device 3a with the bookbinding function prints and binds the ordered book on the basis of the bookbinding information or the like transmitted by the book database server 1, and also executes processing for proceeding book reception by the purchaser smoothly.

7. 发明专利

JPH0477770A ELECTROSTATIC RECORDER 失效
公开(公告)号：JPH0477770A
公开(公告)日：1992-03-11
申请号：JP19053490
申请日：1990-07-20
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： NAKAZAWA TAKASHI , OSHIMA MINORU , ISHIKAWA MASAMI , OGAWA TSUKASA , UMEDA TAKAO , MIYASAKA TORU
IPC分类号： G03G15/02 , G03G15/00 , G03G21/00
摘要： PURPOSE:To precisely control the surface potential of a photosensitive body and to stably set it by separating the measuring cycle from the controlling cycle of the surface potential of the photosensitive body, measuring and holding the surface potential within the optional cycle and controlling the electrostatic charge quantity thereof in the controlling cycle continued from the measuring cycle based on the measured result. CONSTITUTION:In the first measuring cycle M0, the surface potential of the photosensitive body 3 is measured by a potential sensor 4 at timing which is diametrically opposite to a reference potential part 2. Then, in the controlling cycle C0 which is continued from the cycle M0, the surface potential of the photosensitive body is changed. Besides, in the next measuring cycle M1, the surface potential of the photosensitive drum is measured like the above described M0. However, the concerned cycle M1 is not overlapped with the preceding controlling cycle C0 and the stable surface potential of the photosensitive drum after the consecutive surface potential control such as the cycle M0 and the cycle C0. By similarly repeating the consecutive measurement and control such as the measuring cycle Mn and the control cycle Cn, the potential Vp of the photosensitive body is controlled so as to be made to coincide with reference potential Vs regardless of the positional relation between the potential sensor 4 and an electrostatic charger 18.

8. 发明专利

JPH0477678A PHOTOSENSITIVE SURFACE POTENTIAL MEASURING DEVICE AND ELECTROSTATIC RECORDER USING IT 失效
公开(公告)号：JPH0477678A
公开(公告)日：1992-03-11
申请号：JP19053190
申请日：1990-07-20
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： NAKAZAWA TAKASHI , OSHIMA MINORU , ISHIKAWA MASAMI , OGAWA TSUKASA , UMEDA TAKAO , MIYASAKA TORU
IPC分类号： G01R29/12 , G01R15/16 , G01R19/00 , G03G15/00 , G03G15/02 , G03G15/05 , G03G15/06 , G03G21/00
摘要： PURPOSE:To measure exact surface potentials by measuring the surface potentials of a plurality of positions of a photosensitive body to eliminate the fluctuation and noise of the surface potentials. CONSTITUTION:A potential sensor 2 is a vibrating reed sensor and outputs an alternating current signal proportional to the magnitude of surface potentials of a photosensitive body drum 1. The alternating current signal becomes a surface potential measured value rectified in a rectification circuit 4 through an amplifier 3. The surface potential of the drum 1 is sampled at intervals of 120 degrees of rotation to hold a sample and hold circuits A1, A2, A3 to add each output of the sample and hold circuits A1, A2, A3 by the use of an adder 6 so as to transmit to a control circuit 8. Various noises are superimposed in addition to the fluctuation due to eccentricity in the output of the potential sensor 2. Such noises can be eliminated if sampling is performed by the frequency of twofold or more of a frequency band of the noises as known in Nyquist theorem.

9. 发明专利

JPH06110289A METHOD AND DEVICE FOR MULTICOLOR PRINTING ELECTROPHOTOGRAPHIC RECORDING 失效
公开(公告)号：JPH06110289A
公开(公告)日：1994-04-22
申请号：JP19582493
申请日：1993-08-06
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： KUMASAKA TAKAO , SHIMAZAKI YUZURU , MIYASAKA TORU , OTOME YUKIO , TAKUMA YASUO
IPC分类号： G03G15/00 , G03G15/01 , G03G15/02 , G03G15/06 , G03G21/00
摘要： PURPOSE:To prevent color mixing even if a printing speed is increased and to enable multicolor printing with a small-sized device. CONSTITUTION:At least second and subsequent electrostatic charging stages are executed by electrostatic chargers 5 respectively having control electrodes. The relations among a control potential Vg to be impressed to the control electrodes of the electrostatic chargers 5, a target potential V0 after the electrostatic charge of the non-image parts in the electrostatic charging stages and a DC component Vdc of developing biases in respective developing stages are so set as to satisfy ¦V0¦>¦Vdc¦>=¦Vg¦. As a result, the potential Vi after the reelectrostatic charge of the toner image parts can be increased even if the surface potential Vn of the non-image parts is not excessively increased even if sufficient corona current is passed. Consequently, the potential Vi of the toner image parts after the reelectrostatic charge rises higher than the DC component Vdc of the developing bias potential, and therefore, the intrusion of other toners is prevented.

10. 发明专利

JPH0477768A ELECTROSTATIC RECORDER 失效
公开(公告)号：JPH0477768A
公开(公告)日：1992-03-11
申请号：JP19053090
申请日：1990-07-20
申请人： HITACHI KOKI KK , HITACHI LTD
发明人： NAKAZAWA TAKASHI , OSHIMA MINORU , ISHIKAWA MASAMI , OGAWA TSUKASA , UMEDA TAKAO , MIYASAKA TORU
IPC分类号： G03G15/02 , G03G15/00
摘要： PURPOSE:To correct the measured error of potential caused by mechanical level difference between a photosensitive body and a reference potential part and to accurately control the potential of the photosensitive body by providing a circuit which generates the correcting amount of an error and an addition circuit and obtaining such constitution that an error correction signal is added and subtracted to and from a potential detection signal on the circuit. CONSTITUTION:Since the reference potential part 2 and the photosensitive body 3 are discontinuous, the level difference G is generated. A correction circuit consists of an adder 11 being an addition means and a switch 22 being a correction signal generation means. Then, a binary value ds-dse in proportion to a detection error Es-Ese by the level difference G shown by a signal (j) is previously set by the switch and added to binary data des-dp for adding by the adder. The added result becomes the binary value ds-dp in proportion to the difference of the potential Vs-VP like a signal (k) and the effect of the level difference G is corrected.

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