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    Laser driving apparatus and image forming apparatus using the same
    1.
    发明授权
    Laser driving apparatus and image forming apparatus using the same 失效
    激光驱动装置及使用其的图像形成装置

    公开(公告)号：US6144680A

    公开(公告)日：2000-11-07

    申请号：US114512

    申请日：1998-07-14

    申请人： Hajime Kaji ,  Tomobumi Nakayama, deceased ,  Michiharu Masuda ,  Takayuki Kawakami

    发明人： Hajime Kaji ,  Tomobumi Nakayama, deceased ,  Michiharu Masuda ,  Takayuki Kawakami

    IPC分类号： H01S5/06 ,  H01S5/042 ,  H01S5/0683 ,  H01S5/40 ,  H04N1/40 ,  H01S3/00

    CPC分类号： H04N1/4005 ,  H01S5/4025 ,  H04N1/40037 ,  H01S5/042 ,  H01S5/0683

    摘要： A laser driving apparatus for driving a plurality of laser beam sources includes a plurality of laser beam sources, a photodetector for detecting amounts of laser beams emitted from the plurality of laser beam sources, a plurality of current sources for driving the plurality of laser beam sources, a plurality of switches respectively interposed between the plurality of laser beam sources and the plurality of current sources, a plurality of controllers for controlling light amounts of the plurality of laser beam sources by comparing the light amounts detected by the photodetector with a reference value and controlling current amounts of the plurality of current sources in accordance with the comparison values, a plurality of sample/hold circuits respectively interposed between the photodetector and the plurality of controllers, and timing adjustment device for outputting a plurality of timing signals of a first type for controlling the plurality of switches and a plurality of timing signals of a second type for controlling the plurality of sample/hold circuits. The timing adjustment device outputs the plurality of timing signals of the first type for time-divisionally turning on the plurality of switches and sequentially making the plurality of laser beam sources to emit laser beams one by one. The plurality of timing signals of the second type making each of the plurality of sample/hold circuits corresponding to the plurality of switches sample while each of the plurality of switches is on. The plurality of timing signals of the second type making each of the plurality of sample/hold circuits sample while any one of the switches which are turned on before a corresponding switch is on.

    摘要翻译： 用于驱动多个激光束源的激光驱动装置包括：多个激光束源，用于检测从所述多个激光束源，用于驱动所述多个激光束源的多个电流源发射的激光束的量的光电检测器 中，多个分别插入在多个激光束源和所述多个电流源，用于通过比较由所述光检测器与参考值检测的光量控制所述多个激光光源的光量的多个控制器之间的开关 控制电流量的多个电流源的根据比较值，多个分别插入在光电探测器和所述多个控制器，以及定时调整装置之间，用于输出多个用于定时的第一类型的信号的采样/保持电路的 控制多个开关和多个定时信号 用于控制多个采样/保持电路的第二类型的Nals。 定时调整装置输出第一类型的多个定时信号，用于分时地接通多个开关，并依次使多个激光束源逐个发射激光束。 在多个开关中的每一个接通时，使与多个开关相对应的多个采样/保持电路中的每一个采样的第二类型的多个定时信号被采样。 多个采样/保持电路中的每一个采样的第二类型的多个定时信号在相应的开关导通之前被接通的任何一个开关中采样。

    Method of leading in APC control and image forming apparatus using the same
    3.
    发明授权
    Method of leading in APC control and image forming apparatus using the same 失效
    领先于APC控制的方法和使用其的成像设备

    公开(公告)号：US5965869A

    公开(公告)日：1999-10-12

    申请号：US990914

    申请日：1997-12-15

    申请人： Michiharu Masuda ,  Takayuki Kawakami

    发明人： Michiharu Masuda ,  Takayuki Kawakami

    IPC分类号： B41J2/44 ,  G02B26/10 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191 ,  H04N1/407 ,  G01J1/32

    CPC分类号： H04N1/4076 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/04729

    摘要： In an APC control lead-in method in an image forming apparatus having a plurality of laser light sources, a laser beam emitted by at least one of the plurality of laser light sources is scanned by a deflector to detect a synchronization signal from the scanned laser beam. A first laser light source as one of the plurality of laser light sources is turned on to be led in APC control of the first laser light source. A second laser light source as the remaining one of the plurality of laser light sources is turned on in synchronism with the synchronization signal after lead-in of the APC control of the first laser light source is complete so as to be led in APC control of the second laser light source.

    摘要翻译： 在具有多个激光源的图像形成装置中的APC控制引入方法中，由多个激光源中的至少一个发射的激光束被偏转器扫描以检测来自扫描激光器的同步信号 光束。 作为多个激光源之一的第一激光光源被接通以被引导到第一激光光源的APC控制中。 在第一激光光源的APC控制导入完成之后，作为多个激光源中剩余的一个激光源的第二激光光源与同步信号同步地被导通，从而在APC控制 第二激光光源。

    Laser control apparatus with a current detecting and interrupting system
    6.
    发明授权
    Laser control apparatus with a current detecting and interrupting system 失效
    具有电流检测和中断系统的激光控制装置

    公开(公告)号：US06347105B1

    公开(公告)日：2002-02-12

    申请号：US09411393

    申请日：1999-10-04

    申请人： Tomobumi Nakayama ,  Michiharu Masuda ,  Hisatsugu Tahara ,  Akio Ito ,  Yukio Yokoyama

    发明人： Tomobumi Nakayama ,  Michiharu Masuda ,  Hisatsugu Tahara ,  Akio Ito ,  Yukio Yokoyama

    IPC分类号： H01S300

    CPC分类号： H01S5/06825

    摘要： An image forming apparatus is arranged to form an image with laser light emitted from a semiconductor laser source, and is constructed so as to protect the laser source from a breakdown, by regulating electric current flowing to the laser source no matter when an adjusting circuit for adjusting the light amount of the semiconductor laser source is apt to supply the electric current that could break the laser source, to the laser source. The apparatus is constructed in such structure that during an automatic light amount control period the laser light amount emitted from the semiconductor laser source is detected and a current source circuit is made inactive when the light amount detected is over a set light amount and that during periods other than the control period the electric current flowing to the semiconductor laser is detected and the current source circuit is made inactive when the light amount detected becomes over a fixed ratio times the current detected during the automatic light amount control period. In this way, the protection circuit can operate effectively anytime of emission of the laser source, so as to protect the laser source from the breakdown.

    摘要翻译： 图像形成装置被配置成通过从半导体激光源发射的激光形成图像，并且被构造成通过调节流向激光源的电流来保护激光源免受击穿，不管当调节电路 调整半导体激光源的光量易于将激光源的电流提供给激光源。 该装置的结构是这样一种结构，即在自动光量控制期间，检测出半导体激光源发出的激光量，并且当检测到的光量超过设定的光量时，电流源电路被激活，而在期间 当检测到的光量变得超过在自动光量控制周期期间检测到的电流的固定比率时，检测到流过半导体激光器的电流，并且检测流过半导体激光器的电流，并使电流源电路无效。 以这种方式，保护电路可以随时发射激光源，以保护激光源免受击穿。

    Image forming apparatus and method and information processing system and method
    8.
    发明授权
    Image forming apparatus and method and information processing system and method 失效
    图像形成装置及方法及信息处理系统及方法

    公开(公告)号：US06034783A

    公开(公告)日：2000-03-07

    申请号：US904538

    申请日：1997-08-04

    申请人： Masayuki Honma ,  Michiharu Masuda ,  Hisatsugu Tahara ,  Yasuki Nakajima

    发明人： Masayuki Honma ,  Michiharu Masuda ,  Hisatsugu Tahara ,  Yasuki Nakajima

    IPC分类号： G06F3/12 ,  H04N1/21 ,  H04N1/32 ,  G06K15/00

    CPC分类号： H04N1/32464 ,  H04N1/32358 ,  H04N2201/0082 ,  H04N2201/3288 ,  H04N2201/3298

    摘要： An image forming apparatus has a reversing unit for reversing a sheet with an image formed and discharging the reversed sheet, a determining unit for determining whether the sheet with an image formed is reversed or not reversed with the reversing unit before the sheet is discharged and a page order control unit including a first mode of forming images of a plurality of pages in a first page mode and a second page mode of forming images of a plurality of pages in a second page mode different from the first page mode, wherein in accordance with whether the apparatus operates in the first mode or in the second mode, the determining unit determines whether the sheet with an image formed is reversed or not reversed with the reversing unit before the sheet is discharged.

    摘要翻译： 图像形成装置具有反转单元，用于使形成的图像反转并排出反转的纸张;确定单元，用于在纸张排出之前用反转单元确定图像形成的纸张是否反转或不反转， 页顺序控制单元，包括以第一页模式形成多页的图像的第一模式和形成与第一页模式不同的第二页模式的多页的图像的第二页模式，其中根据 无论设备是以第一模式操作还是在第二模式中，确定单元在片材被排出之前，确定具有形成的图像的纸张是否与反转单元相反或不反转。

    Color image signal recording/reproducing apparatus
    9.
    发明授权
    Color image signal recording/reproducing apparatus 失效
    彩色图像信号记录/再现装置

    公开(公告)号：US5732182A

    公开(公告)日：1998-03-24

    申请号：US598735

    申请日：1996-02-08

    申请人： Michiharu Masuda ,  Kazuyuki Iwamoto

    发明人： Michiharu Masuda ,  Kazuyuki Iwamoto

    IPC分类号： H04N5/52 ,  H04N5/77 ,  H04N5/85 ,  H04N5/91 ,  H04N9/79

    CPC分类号： H04N5/91 ,  H04N5/772 ,  H04N5/85 ,  H04N9/7904

    摘要： An information signal recording and/or reproducing apparatus is arranged to selectively input any one kind of information signal from among a plurality of kinds of information signals which are externally supplied and an information signal reproduced from a recording medium, and control the operation of recording the information signal, in accordance with the state of the input information signal. Accordingly, the apparatus is capable of accurately and stably recording and/or reproducing the information signal on the recording medium.

    摘要翻译： 信息信号记录和/或再现装置被布置成从外部提供的多种信息信号和从记录介质再现的信息信号中选择性地输入任何一种信息信号，并且控制记录 信息信号，根据输入信息信号的状态。 因此，该装置能够在记录介质上准确且稳定地记录和/或再现信息信号。