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51. 发明专利

JP2001168689A WAVEFORM SHAPING CIRCUIT 失效
公开(公告)号：JP2001168689A
公开(公告)日：2001-06-22
申请号：JP34636499
申请日：1999-12-06
申请人： SHARP KK
发明人： MATSUDA HIDEO
IPC分类号： H03K5/13
摘要： PROBLEM TO BE SOLVED: To easily provide inexpensive and stable products by extending an input allowable amplitude range, thereby extending the tolerance of a restage circuit to element variation in a pulse output circuit 11 of a photo coupler. SOLUTION: This waveform shaping circuit is provided with a current charging circuit consisting of a transistor Tr1 and a current restriction resistor R1 and charging an electric change to the base of an output transistor Tr0 and a current pullout circuit consisting of transistors Tr2 to Tr4 and a current restriction resistor R2 and pulling out an electric charge. These circuits are connected in parallel to each other. Also the circuit is provided with a delay circuit consisting of a transistor Tr5 and a capacitor C1 and delaying the pulling out speed of the electric charge from the base of the transistor Tr0 by the current pullout circuit relating with the current pullout circuit. Thus, the inputting allowable amplitude range can be extended while keeping a prescribed distortion, which is permitted from the transmitting speed of a signal.

52. 发明专利

JPH11355549A IMAGE PROCESSOR 失效
公开(公告)号：JPH11355549A
公开(公告)日：1999-12-24
申请号：JP15733398
申请日：1998-06-05
申请人： SHARP KK
发明人： YAMAZAKI KIMITO , MATSUDA HIDEO
IPC分类号： G03G15/36 , G03G21/02 , H04N1/00 , H04N1/387
摘要： PROBLEM TO BE SOLVED: To provide an image processor which is convenient and easy to use from the side to provide the device and from the side to utilize it as well by selecting fee and specified image while comparing the fee with the value of specified image information. SOLUTION: A digital copying machine displays an operation indication image on a control panel 60 and lets a user select the advertisement charge and the size of advertisement image. Based on this condition, an image editing part 45 performs processing through an image processing part 41, synthesizes original image information 111 and advertisement image information 112 through an image information synthesizing part 105 and performs processing for output recording through an image information output part. Since the user sets the fee, processing is performed while fixing the synthesizing condition of the advertisement image matched with the fee.

53. 发明专利

JPH11184567A DATA PROCESSING SYSTEM 失效
公开(公告)号：JPH11184567A
公开(公告)日：1999-07-09
申请号：JP35060497
申请日：1997-12-19
申请人： SHARP KK
发明人： KATAMOTO KOJI , MATSUDA HIDEO , HONDA YOSHITAKA , FUKUSHIMA TAMOTSU , YAMAMOTO HIRANAGA , YOSHIURA SHOICHIRO , GOMI KENICHI
IPC分类号： B41J29/38 , G03G15/00 , G03G21/00 , G06F1/26 , G06F3/12 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To appropriately utilize a data processing system by preventing the destruction of data stored by a portable terminal equipment for constituting the data processing system together with a copying machine. SOLUTION: When a power saving mode start timer T2 times up (s18), the portable terminal equipment transmits the effect that a power saving mode is to be executed to the copying machine (s20). The copying machine which receives the effect that the power saving mode is to be executed transmits the effect that the power saving mode is to be canceled to the portable terminal equipment (s21). When the power saving mode start timer T3 times up (s19), the copying machine transmits the effect that the power saving mode is to be executed to the portable terminal equipment (s22). A CPU which receives the data of the effect that the power saving mode is to be executed executes the power saving mode (s23). In the state of mounting the portable terminal equipment to the copying machine, the copying machine and the portable terminal equipment simultaneously execute the power saving mode including the saving processing of the data.

54. 发明专利

JPH1195520A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH1195520A
公开(公告)日：1999-04-09
申请号：JP25825397
申请日：1997-09-24
申请人： SHARP KK
发明人： FUJITA MASAHIKO , MATSUDA HIDEO , OKAWA YASUNOBU , YOSHIURA SHOICHIRO , FUJIMOTO OSAMU
IPC分类号： B41J2/525 , G03G15/00 , G03G15/01 , G03G15/16
摘要： PROBLEM TO BE SOLVED: To provide a color image forming device whose size is reduced by disposing a plurality of laser scanning means so that a part of one laser scanning means covers a part of another. SOLUTION: The laser-beam scanner units 227 (227a-d) are arranged so that a part of the laser-beam scanner unit 227 situated upstream in the direction of the carrying of paper P covers a part of the laser-beam scanner unit situated downstream in the direction of the carrying, and so that photoreceptor drums 222 (222a-222d) which are subjected to the scan of images in their respective colors with the laser-beam scanner units have the fixed lengths of laser-scan optical paths from their respective laser-beam scanner units. A transfer carrying- belt 216 is disposed below the photoreceptor drums such that its upstream side in the direction of the carrying of the paper P is put in a low position and its downstream side in the direction of the carrying is put in a high position. A fixing means 217 is disposed downstream in the direction where the transfer carrying-belt carries the paper P.

55. 发明专利

JPH10228142A IMAGE FORMING DEVICE AND METHOD 失效
公开(公告)号：JPH10228142A
公开(公告)日：1998-08-25
申请号：JP3346097
申请日：1997-02-18
申请人： SHARP KK
发明人： ONISHI KAZUYUKI , MATSUDA HIDEO
IPC分类号： G03G15/00 , G03G15/04 , G03G15/043
摘要： PROBLEM TO BE SOLVED: To measure concentration with less errors, for enabling a more accurate feedback to an image forming condition by adopting such a constitution that a latent image formed for measuring the concn. of toner has an inclination gentler than that of the latent image at the time of executing normal printing, so as to make changes in the concn. and line width obtained when the image forming condition is varied great. SOLUTION: A developing bias voltage 36 as a reference value 35 previously set by a test, etc., is obtained from three kinds of toner image densities 34-a, 34-b and 34-c different in developing bias voltage, to be set as one at the time of forming an image. In the method of calculating a bias voltage correction value for correcting a process, the same sensor output as the reference value is obtained at a voltage lower than the developing bias voltage at the time of forming a toner image by about 20V, so that it is good that the developing bias voltage for an image forming operation is reduced by about 20V.

56. 发明专利

JPH09258571A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH09258571A
公开(公告)日：1997-10-03
申请号：JP6351396
申请日：1996-03-19
申请人： SHARP KK
发明人： SAKAGAMI HIDEKAZU , MATSUDA HIDEO , FUJIMOTO OSAMU , IDE ATSUSHI , ONISHI KAZUYUKI
IPC分类号： G03G15/16
摘要： PROBLEM TO BE SOLVED: To respectively apply an optimum voltage value by making the attraction voltage for performing electrostatic attraction and the transferring voltage required for performing the transfer severally controllable, in the case of transferring the toner image from a photoreceptor drum to a recording paper attracted in a transferring drum. SOLUTION: This device is provided with the drum main body 40 having volume resistivity between 10 and 10 Ωcm, and the transferring drum 16 formed by covering its outside surface with an insulator layer 42. Then, the device is made possible to apply the voltage respectively suitable for transferring and attracting by providing the device with a transfer-applying roller 20 which is internally circumscribed with the transfer drum 16 and disposed on the position opposing the photoreceptor drum 22 for applying the transfer voltage, and an attracting roller 17 for applying the attracting voltage disposed opposing the attract-grounding roller 21.

57. 发明专利

JPH07306482A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH07306482A
公开(公告)日：1995-11-21
申请号：JP9738894
申请日：1994-05-11
申请人： SHARP KK
发明人： OKADA MIHOKO , ONISHI KAZUYUKI , MATSUDA HIDEO , FUJIMOTO OSAMU
IPC分类号： G03B27/72 , B41J2/44 , H04N1/405
摘要： PURPOSE:To provide an excellent picture quality image compared with the case when only the image data of plural pixels are averaged and a modulation signal for forming the image is obtained. CONSTITUTION:The image data of three pieces of pixels a-c are fetched from a line memory 41 into a shift register 42. In a process by an LUT 43, the pixel b is made the notable pixel, and the recording density of the notable pixel b is decided by that a density value obtained from the density values of the pixels a.c being adjacent pixels is added to the density value of the notable pixel b. Further, the recording area of the notable pixel is set to a length according to the recording density making the central position of the pixel (b) in question a center by the processes in the LUT 43, data latches 44, 45 and comparators 46, 47. In such a manner, the recording area of the pixel (b) in question is specified, and a modulation signal incorporating the recording density is imparted to an image forming part, and the image is obtained.

58. 发明专利

JPH06130757A AUTOMATIC BOTH-SIDE COPYING MACHINE 失效
公开(公告)号：JPH06130757A
公开(公告)日：1994-05-13
申请号：JP28441392
申请日：1992-10-22
申请人： SHARP KK
发明人： YOSHINAKA SHUICHI , KUBO TAKASHI , KANEKO HIDETOSHI , MORIYAMA KOICHI , MATSUDA HIDEO , ONO YASUHIRO
IPC分类号： G03G21/00 , G03G15/00 , G03G15/16 , G03G21/14
摘要： PURPOSE:To provide an automatic both side copying machine capable of quickly producing a both side copy having the same constitution as a booklet and a book without loosening the filed part of the booklet and the book. CONSTITUTION:This machine is equipped with a photosensitive drum 17, an intermediate transfer body constituted of a transfer belt 15, a 1st transfer roller 14 cooperating with the intermediate transfer body, a 2nd transfer roller 16 provided with a separating and contacting mechanism to the intermediate transfer body and cooperating with the intermediate transfer body, a Duplex unit 39, and a control means operating the roller 16 provided with the separating and contacting mechanism and the unit 39 so that the image of a latter half part out of the images of a first half part and the latter half part transferred on the intermediate transfer body and formed by 1st scanning may be transferred on the 1st paper, then the image of the first half part out of the images of the first half part and the latter half part formed by 2nd scanning may be transferred on the rear side of the 1st paper carried from the unit 39 and the image of the latter half part formed by the 2nd scanning may be transferred on the 2nd paper, and such operation may be repeated in the required number of times.

59. 发明专利

JPH06130505A OPTICAL SYSTEM SCANNING DEVICE FOR COPYING MACHINE 失效
公开(公告)号：JPH06130505A
公开(公告)日：1994-05-13
申请号：JP27585992
申请日：1992-10-14
申请人： SHARP KK
发明人： MATSUDA HIDEO , YOSHINAKA SHUICHI , MASUDA YOSHIAKI , KAWAI YASUTOSHI
IPC分类号： G03B27/50 , G03G15/04
摘要： PURPOSE:To smoothly hang a driving wire to respective pulleys and to shorten an assembling time. CONSTITUTION:As for a copying machine executing scanning between a first moving frame 26 provided with a copying lamp, a first mirror or the like and a second moving frame 27 provided with a second mirror, a third mirror or the like by the driving wire 23; the supporting body 13 of the double pulley 16 for making the scanning speed of the frame 27 1/2 of the scanning speed of the frame 26 is temporarily fixed to the back-part frame 2 of a frame body by being separated from the frame 27. Then, the wire 23 interlocked with a driving motor is hung to the pulley 16 or the like. Besides, the frames 26 and 27 are arranged on the frame body so as to freely slide and the supporting body 13 of the pulley 16 is fixed to the frame 27.

60. 发明专利

JPH06118826A FIXING DEVICE FOR ELECTROPHOTOGRAPHIC DEVICE 失效
公开(公告)号：JPH06118826A
公开(公告)日：1994-04-28
申请号：JP26702192
申请日：1992-10-06
申请人： SHARP KK
发明人： ONO YASUHIRO , MATSUDA HIDEO , YOSHINAKA SHUICHI , MASUDA YOSHIAKI
IPC分类号： B65H5/36 , B65H29/20 , B65H29/52 , G03G15/00 , G03G15/20
摘要： PURPOSE:To prevent paper jamming from occurring when paper is fed in and out to a fixing device. CONSTITUTION:This fixing device for an electrophotographic device is provided with three fixing rollers, an upper fixing roller 33, a middle fixing roller 34 and a lower fixing roller 35; and the paper carried on a carrying belt 28 which can move up and down is guided to a 1st fixing part constituted of the upper and the lower fixing rollers 33 and 34, or a 2nd fixing part constituted of the middle and the lower fixing rollers 34 and 35. A roller 45 for changing the carrying direction of the paper is installed under the roller 34. Thus, a direction where the paper getting out of the 2nd fixing part is guided to a paper ejecting roller 31 and a direction where the paper getting out of the 1st fixing part is guided to the roller 31 are made nearly to coincide with each other.

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