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    Positional error correction for color image forming apparatus
    3.
    发明授权
    Positional error correction for color image forming apparatus 失效
    彩色图像形成装置的位置误差校正

    公开(公告)号：US6118463A

    公开(公告)日：2000-09-12

    申请号：US042806

    申请日：1998-03-17

    申请人： Youji Houki ,  Kouichi Kobayashi ,  Hiroji Uchimura ,  Morihisa Kawahara ,  Tsutomu Nagatomi ,  Hirofumi Nakayasu ,  Hiroyuki Kaneda ,  Takeo Kojima ,  Kazuhiro Tamada ,  Akihisa Sota ,  Masao Konisi ,  Takao Sugano ,  Yoshihiko Taira

    发明人： Youji Houki ,  Kouichi Kobayashi ,  Hiroji Uchimura ,  Morihisa Kawahara ,  Tsutomu Nagatomi ,  Hirofumi Nakayasu ,  Hiroyuki Kaneda ,  Takeo Kojima ,  Kazuhiro Tamada ,  Akihisa Sota ,  Masao Konisi ,  Takao Sugano ,  Yoshihiko Taira

    IPC分类号： B41J11/42 ,  B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  B41J2/525 ,  B41J29/38 ,  G03G15/01 ,  G03G21/14 ,  H04N1/29 ,  H04N1/50 ,  G03G15/00

    CPC分类号： H04N1/506

    摘要： An image forming apparatus includes a transport mechanism transporting a recording medium on a belt which is transported at a constant speed in a transport direction, a plurality of electrostatic recording units arranged in the transport direction of the recording medium and transferring toner images of different colors, a positional error detecting part using the toner image of a reference color transferred by one of the electrostatic recording units as a reference image, and relatively detecting positional error information related to positional errors of the toner images of remaining colors transferred by the remaining electrostatic recording units with respect to the reference image, and a positional error correcting part relatively correcting the positional errors of the toner images transferred by the remaining electrostatic recording units based on the positional error information. The positional error detecting part includes a part for controlling the electrostatic recording units to transfer at least two resist marks on the belt at a scan starting end and a scan terminating end of the belt in a main scan direction which is perpendicular to the transport direction of the recording medium, with respect to each of the colors, and a second part, including a sensor detecting the resist marks, for detecting positional error quantities of the resist marks of each of the remaining colors with respect to the resist marks of the reference color based on detection times of the resist marks of reference color and the remaining colors.

    摘要翻译： 图像形成装置包括：传送机构，其将输送方向上以恒定速度输送的传送带传送到记录介质;多个静电记录单元，沿着记录介质的输送方向排列，并且转印不同颜色的调色剂图像; 使用由静电记录单元之一转印的参考颜色的调色剂图像作为参考图像的位置误差检测部分，以及与由剩余静电记录单元传送的剩余颜色的调色剂图像的位置误差有关的相对检测的位置误差信息 以及基于位置误差信息相对校正由剩余静电记录单元传送的调色剂图像的位置误差的位置误差校正部分。 位置误差检测部分包括用于控制静电记录单元的部分，以在扫描起始端和带的扫描终止端沿主扫描方向传送至少两个抗蚀剂标记，该主扫描方向垂直于传送方向 所述记录介质相对于每种颜色，以及第二部分，包括检测抗蚀剂标记的传感器，用于检测每个剩余颜色的抗蚀剂标记相对于参考颜色的抗蚀剂标记的位置误差量 基于参考颜色的抗蚀剂标记的检测时间和剩余的颜色。

    Image forming apparatus with cover lifting mechanism
    4.
    发明授权
    Image forming apparatus with cover lifting mechanism 失效
    具有盖提升机构的成像装置

    公开(公告)号：US5978626A

    公开(公告)日：1999-11-02

    申请号：US50112

    申请日：1998-03-30

    申请人： Tomoyuki Nagamine ,  Yukio Saito ,  Tsutomu Nagatomi ,  Hirofumi Nakayasu ,  Youji Houki

    发明人： Tomoyuki Nagamine ,  Yukio Saito ,  Tsutomu Nagatomi ,  Hirofumi Nakayasu ,  Youji Houki

    IPC分类号： G03G15/01 ,  G03G15/00 ,  G03G21/16

    CPC分类号： G03G21/1628 ,  G03G2215/0119 ,  G03G2215/0141 ,  G03G2221/1603 ,  G03G2221/1636 ,  G03G2221/169 ,  G03G2221/183

    摘要： An image forming apparatus which includes a frame, a top cover pivotally mounted to the frame, a lock member for locking the top cover onto the frame, a plurality of printing assemblies, a fixing device, and a paper conveyer belt. Each of the printing assemblies includes a photosensitive body, a charger, an optical head for forming an electrostatic latent image on the photosensitive body, a developing device, and a transfer element. The optical heads are mounted to the top cover. A cover lifting mechanism is provided for lifting the top cover by a predetermined amount relative to the frame when the lock member is released. The lifting mechanism includes a spring loaded rod which is linked to a cover releasing button.

    摘要翻译： 一种图像形成装置，包括框架，可枢转地安装到框架的顶盖，用于将顶盖锁定在框架上的锁定构件，多个打印组件，固定装置和纸张传送带。 每个印刷组件包括感光体，充电器，用于在感光体上形成静电潜像的光学头，显影装置和转印元件。 光头安装在顶盖上。 提供一种提升机构，用于当锁定构件被释放时相对于框架提升预定量的顶盖。 提升机构包括连接到盖释放按钮的弹簧加载杆。

    Printing apparatus
    5.
    发明授权
    Printing apparatus 有权
    印刷装置

    公开(公告)号：US06321060B1

    公开(公告)日：2001-11-20

    申请号：US09583085

    申请日：1999-04-16

    申请人： Hirofumi Nakayasu ,  Youji Houki ,  Tsutomu Nagatomi

    发明人： Hirofumi Nakayasu ,  Youji Houki ,  Tsutomu Nagatomi

    IPC分类号： G03G1501

    CPC分类号： H04N1/506 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0141 ,  G03G2215/0161

    摘要： A plurality of resist marks of K, C, M and Y color toner components are transferred at predetermined pitches onto a belt for conveying record paper, by means of a plurality of electrostatic recording units. The resist marks are optically detected by sensors. A positional offset detection unit detects positions of resist lines from phases &phgr; obtained through Fourier transform of sensor detection signals, and employs as the reference the detected position of the resist mark of K component to thereby detect positional offsets of the detected positions of the resist marks of the other C, M and Y color toner components. A positional offset correction unit corrects the transferred positions of the other C, M and Y color toner components so as to eliminate any positional offsets relative to the K component image.

    摘要翻译： K，C，M和Y彩色调色剂组分的多个抗蚀剂标记通过多个静电记录单元以预定间距转印到用于输送记录纸的带上。 抗蚀剂标记由传感器光学检测。 位置偏移检测单元从通过传感器检测信号的傅里叶变换获得的相位phi检测抗蚀剂线的位置，并且使用K分量的抗蚀剂标记的检测位置作为参考，从而检测检测到的抗蚀剂标记位置的位置偏移 的其他C，M和Y彩色调色剂组分。 位置偏移校正单元校正其他C，M和Y彩色调色剂组分的转印位置，以消除相对于K分量图像的任何位置偏移。

    Printing apparatus
    6.
    发明授权
    Printing apparatus 失效
    印刷装置

    公开(公告)号：US6049690A

    公开(公告)日：2000-04-11

    申请号：US41003

    申请日：1998-03-12

    申请人： Hirofumi Nakayasu ,  Hiroji Uchimura ,  Morihisa Kawahara ,  Tsutomu Nagatomi ,  Kouichi Kobayashi ,  Youji Houki ,  Takeo Kojima

    发明人： Hirofumi Nakayasu ,  Hiroji Uchimura ,  Morihisa Kawahara ,  Tsutomu Nagatomi ,  Kouichi Kobayashi ,  Youji Houki ,  Takeo Kojima

    IPC分类号： G03G21/14 ,  G03G15/00 ,  G03G15/01 ,  H02P5/52 ,  G03G15/14

    CPC分类号： G03G15/5008 ,  G03G15/0194 ,  H02P5/56 ,  G03G2215/0119 ,  G03G2215/0141

    摘要： A drum phase correction unit for detecting rotational positions of a plurality of photosensitive drums by means of a plurality of drum position sensors and corrects to set rotational phases of the drums to predetermined phases in such a manner that transfer positions on drum circumferential surfaces relative to a belt when employing the thus detected rotational positions as their respective references have a specific relationship including coincidence. A positional offset detection unit detects positional offsets of transfer image on recording paper attributable to the wow and flutter in a drive system including the belt and the photosensitive drums. On the basis of the thus detected positional offsets, a wow and flutter correction unit corrects the positional offsets of the transfer images on the recording paper attributable to the wow and flutter.

    摘要翻译： 滚筒相位校正单元，用于通过多个滚筒位置传感器检测多个感光鼓的旋转位置并进行校正，以将滚筒的旋转相位设定为预定的相位，使得滚筒圆周表面上的转印位置相对于 当使用如此检测的旋转位置作为它们各自的参考时，带具有包括重合的特定关系。 位置偏移检测单元检测在包括带和感光鼓的驱动系统中归因于哇音和颤振的记录纸上的转印图像的位置偏移。 基于这样检测到的位置偏移，哇音和颤振校正单元校正归因于哇音和颤振的记录纸上的转印图像的位置偏移。

    Printing apparatus with positional offset detection and correction
    7.
    发明授权
    Printing apparatus with positional offset detection and correction 失效
    具有位置偏移检测和校正的打印设备

    公开(公告)号：US5946537A

    公开(公告)日：1999-08-31

    申请号：US86956

    申请日：1998-05-29

    申请人： Hirofumi Nakayasu ,  Youji Houki ,  Tsutomu Nagatomi

    发明人： Hirofumi Nakayasu ,  Youji Houki ,  Tsutomu Nagatomi

    IPC分类号： B41J2/525 ,  B41J2/44 ,  B41J2/45 ,  B41J2/455 ,  G03G15/00 ,  G03G15/01 ,  H04N1/50 ,  G03G15/16

    CPC分类号： H04N1/506 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0141 ,  G03G2215/0161

    摘要： A plurality of resist marks of K, C, M and Y color toner components are transferred at predetermined pitches onto a belt for conveying record paper, by means of a plurality of electrostatic recording units. The resist marks are optically detected by sensors. A positional offset detection unit detects positions of resist lines from phases .phi. obtained through Fourier transform of sensor detection signals, and employs as the reference the detected position of the resist mark of K component to thereby detect positional offsets of the detected positions of the resist marks of the other C, M and Y color toner components. A positional offset correction unit corrects the transferred positions of the other C, M and Y color toner components so as to eliminate any positional offsets relative to the K component image.

    摘要翻译： K，C，M和Y彩色调色剂组分的多个抗蚀剂标记通过多个静电记录单元以预定的间距转印到用于输送记录纸的带上。 抗蚀剂标记由传感器光学检测。 位置偏移检测单元从通过传感器检测信号的傅里叶变换获得的相位phi检测抗蚀剂线的位置，并且使用K分量的抗蚀剂标记的检测位置作为基准，从而检测检测到的抗蚀剂标记位置的位置偏移 的其他C，M和Y彩色调色剂组分。 位置偏移校正单元校正其他C，M和Y彩色调色剂组分的转印位置，以消除相对于K分量图像的任何位置偏移。

    Image forming apparatus and exposure device thereof
    9.
    发明授权
    Image forming apparatus and exposure device thereof 失效
    图像形成装置及其曝光装置

    公开(公告)号：US06340982B1

    公开(公告)日：2002-01-22

    申请号：US09608147

    申请日：2000-06-30

    申请人： Yoshihiko Taira ,  Youji Houki ,  Hirofumi Nakayasu ,  Tsutomu Nagatomi

    发明人： Yoshihiko Taira ,  Youji Houki ,  Hirofumi Nakayasu ,  Tsutomu Nagatomi

    IPC分类号： B41J2385

    CPC分类号： B41J2/451 ,  H01L2224/48091 ,  H01L2924/00014

    摘要： An exposure device in which an image forming lens is disposed in such a posture that the center line of an image forming is out of axial alignment with the center of beam intensity distribution of the light emitting diode output (the center of beam intensity distribution) so as to reduce possible incidence of stray light when local part of the light output from the light emitting diode array reflects on said wires. As a result, the stray light does not strikes the circumference surface of the image supporting body and the vivid image can be formed.

    摘要翻译： 一种曝光装置，其中图像形成透镜以使得图像形成的中心线与发光二极管输出的光束强度分布的中心（光束强度分布的中心）不轴向对准的姿态设置为如此 以便当从所述发光二极管阵列输出的光的局部部分在所述导线上反射时，减少杂散光的可能入射。 结果，杂散光不会撞击图像支撑体的圆周表面并且可以形成生动的图像。

    Image formation apparatus capable of detecting and correcting positional offsets
    10.
    发明授权
    Image formation apparatus capable of detecting and correcting positional offsets 有权
    能够检测和校正位置偏移的图像形成装置

    公开(公告)号：US06198896B1

    公开(公告)日：2001-03-06

    申请号：US09234455

    申请日：1999-01-21

    申请人： Hirofumi Nakayasu ,  Tsutomu Nagatomi

    发明人： Hirofumi Nakayasu ,  Tsutomu Nagatomi

    IPC分类号： G03G1501

    CPC分类号： H04N1/506

    摘要： By means of a plurality of image carrying units, a correction mark formation unit transfers mixed color mark trains in right and left lines onto a moving member in the form of a belt. The mixed color mark trains serve as marks for correcting image offsets between color images and each consist of K-C, K-M and K-Y two-color marks which are superposed on each other in an offset manner. A correction value calculation unit detects a lightness pattern of the mixed color mark trains transferred onto the moving member and figures out correction values for image offsets between color images from the phase of this lightness pattern. A positional offset correction unit automatically corrects the offsets between the color images on the basis of the correction values acquired by the correction value calculation unit.

    摘要翻译： 通过多个图像承载单元，校正标记形成单元将带有左右行的混合色标记列传送到带状的移动构件上。 混合色彩标记列作为用于校正彩色图像之间的图像偏移的标记，并且每个由以偏移方式彼此重叠的K-C，K-M和K-Y两色标记组成。 校正值计算单元检测转移到移动构件上的混合色标志列的亮度图案，并从该亮度图案的相位中计算出彩色图像之间的图像偏移校正值。 位置偏移校正单元基于由校正值计算单元获取的校正值来自动校正彩色图像之间的偏移量。