利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

57 条记录 (耗时 0.023 秒)

    Light beam scanning apparatus
    22.
    发明授权
    Light beam scanning apparatus 有权

    公开(公告)号：US06353454B1

    公开(公告)日：2002-03-05

    申请号：US09461210

    申请日：1999-12-15

    申请人： Koji Tanimoto ,  Kenichi Komiya ,  Jun Sakakibara ,  Naoaki Ide ,  Toshimitsu Ichiyanagi

    发明人： Koji Tanimoto ,  Kenichi Komiya ,  Jun Sakakibara ,  Naoaki Ide ,  Toshimitsu Ichiyanagi

    IPC分类号： B41J247

    摘要： A light beam position detecting device detects the passage positions of a plurality of light beams for scanning the surface of a photosensitive drum. The light beam position detecting device has a sensor pattern for generating an output which is continuously changed in a wide range with a variation in the passage position of the light beam in a sub-scanning direction perpendicular to a main scanning direction of the light beam. The sensor pattern precisely detects the relative scanning position of the light beam in a wide range. The passage positions of the plurality of light beams for scanning the surface of the photosensitive drum are controlled to a preset position based on the output of the sensor pattern.

    Image forming apparatus having test patterns for correcting color discrepancy
    24.
    发明授权
    Image forming apparatus having test patterns for correcting color discrepancy 失效
    具有用于校正颜色差异的测试图案的图像形成设备

    公开(公告)号：US5854958A

    公开(公告)日：1998-12-29

    申请号：US625310

    申请日：1996-04-01

    申请人： Koji Tanimoto ,  Kenichi Komiya ,  Naoaki Ide

    发明人： Koji Tanimoto ,  Kenichi Komiya ,  Naoaki Ide

    IPC分类号： G03G15/01 ,  G03G15/00

    CPC分类号： G03G15/5058 ,  G03G15/0194 ,  G03G2215/00059 ,  G03G2215/00063 ,  G03G2215/0016 ,  G03G2215/00164 ,  G03G2215/0119

    摘要： An image forming apparatus includes image forming units to transfer images onto an image receiving medium that is moved in a specified direction together with a conveyor belt which conveys the image receiving medium. The image forming units of the apparatus form test patterns on the conveyor belt or the image receiving medium. The test patterns include a leading edge and a trailing edge along the specified direction defining a distance therebetween, the distance varying continuously. The apparatus further includes a first detector for detecting the timing of the leading edge and the trailing edge of a test pattern crossing the first detector downstream of the image forming units, a second detector for detecting a shift of an image formed by the image forming units from a proper position based on the difference in the detected timings from the leading edge to the trailing edge of the test pattern detected by the first detector, and a correction unit for correcting a shift of an image formed by the image forming units based on the shifted position of the image detected by the second detector.

    摘要翻译： 图像形成装置包括图像形成单元，用于将图像传送到与传送图像接收介质的传送带一起沿指定方向移动的图像接收介质上。 该装置的图像形成单元在传送带或图像接收介质上形成测试图案。 测试图案包括沿着指定方向的前缘和后缘，限定它们之间的距离，距离连续变化。 该装置还包括第一检测器，用于检测在图像形成单元下游与第一检测器相交的测试图案的前沿和后沿的定时;第二检测器，用于检测由图像形成单元形成的图像的偏移 基于从由第一检测器检测的测试图案的前沿到后沿的检测到的定时的差异的适当位置，以及校正单元，用于基于由第一检测器检测到的图像形成单元形成的图像的偏移 由第二检测器检测到的图像的移位位置。

    Apparatus for controlling intensity of laser beam emitted from semiconductor laser unit
    25.
    发明授权
    Apparatus for controlling intensity of laser beam emitted from semiconductor laser unit 失效
    用于控制从半导体激光单元发射的激光束的强度的装置

    公开(公告)号：US5225850A

    公开(公告)日：1993-07-06

    申请号：US634519

    申请日：1990-12-27

    申请人： Jiro Egawa ,  Naoaki Ide

    发明人： Jiro Egawa ,  Naoaki Ide

    IPC分类号： B41J2/44 ,  G03G15/04 ,  G06K15/12 ,  H01S3/101 ,  H01S5/0683 ,  H04N1/113

    CPC分类号： G06K15/1214 ,  H01S5/0683

    摘要： In an apparatus for adjusting the intensity of a light beam, the light beam from a semiconductor laser is deflected to scan a photosensitive drum and is detected to generate a positional signal by a photodetector outside of the drum. The intensity of the light beam is also detected by a monitor detector and compared with a predetermined value. The comparison result is latched in a latch circuit in accordance with the positional signal and the semiconductor laser is controlled depending on the latched comparison result.

    摘要翻译： 在用于调节光束强度的装置中，来自半导体激光器的光束被偏转以扫描感光鼓，并且被检测为通过在鼓外部的光电检测器产生位置信号。 光束的强度也由监视器检测器检测，并与预定值进行比较。 比较结果根据位置信号锁存在锁存电路中，并根据锁存的比较结果来控制半导体激光器。

    Image scanning apparatus
    27.
    发明授权
    Image scanning apparatus 失效
    图像扫描装置

    公开(公告)号：US06972879B2

    公开(公告)日：2005-12-06

    申请号：US09983442

    申请日：2001-10-24

    申请人： Naoaki Ide

    发明人： Naoaki Ide

    IPC分类号： H04N1/48 ,  H04N1/46

    CPC分类号： H04N1/486

    摘要： With the present invention, by changing the scanning timing of a CCD line sensor in accordance with the amount of scanning misregistration corresponding to a magnification, misregistration of less than one line can be accurately corrected, thereby eliminating degradation of MTF, which has occurred in conventional apparatuses.

    摘要翻译： 利用本发明，通过根据与放大率相对应的扫描对准量改变CCD线传感器的扫描定时，可以精确地校正小于一行的对准，从而消除常规的MTF的劣化 设备。

    Light beam scanning apparatus for use with image forming apparatus
    30.
    发明授权
    Light beam scanning apparatus for use with image forming apparatus 失效
    用于图像形成装置的光束扫描装置

    公开(公告)号：US06243123B1

    公开(公告)日：2001-06-05

    申请号：US08919274

    申请日：1997-08-28

    申请人： Koji Tanimoto ,  Kenichi Komiya ,  Kunihiko Miura ,  Naoaki Ide ,  Jun Sakakibara

    发明人： Koji Tanimoto ,  Kenichi Komiya ,  Kunihiko Miura ,  Naoaki Ide ,  Jun Sakakibara

    IPC分类号： B41J247

    CPC分类号： H04N1/0473 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/04712 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04762 ,  H04N2201/04794

    摘要： In a digital copying machine using a multi-beam optical system, a light beam position detector situated on a line extended from the surface of a photosensitive drum detects the passing position of each light beam scanned by a polygon mirror rotated by a polygon motor. A CPU calculates control amounts for galvanomirrors by using a beam position detector output processor, on the basis of the detection result of the beam position detector. Based on the calculated control amounts, galvanomirror drive circuits drive the galvanomirrors, thereby to control the positions of the beams in a sub-scan direction. The passing positions of the beams can be precisely detected with no special precision in assembling the optical system. In addition, the positions of the beams in the sub-scan direction can be controlled at predetermined positions, even if some change occurs in the structure of the optical system due to a variation in ambience or a variation with the passing of time.

    摘要翻译： 在使用多光束光学系统的数字复印机中，位于从感光鼓表面延伸的线上的光束位置检测器检测由多面镜马达旋转的多面镜扫描的每个光束的通过位置。 CPU根据光束位置检测器的检测结果，通过使用光束位置检测器输出处理器来计算电流计镜的控制量。 基于计算出的控制量，电流镜驱动电路驱动电流镜，从而控制光束在副扫描方向上的位置。 在组装光学系统时，可以精确地检测光束的通过位置，没有特别的精度。 此外，即使由于环境变化或随着时间的流逝的变化，光学系统的结构发生一些变化，也可以将子扫描方向上的光束的位置控制在预定位置。