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    IMAGE FORMING APPARATUS
    1.
    发明申请
    IMAGE FORMING APPARATUS 有权
    图像形成装置

    公开(公告)号：US20090167837A1

    公开(公告)日：2009-07-02

    申请号：US12341332

    申请日：2008-12-22

    申请人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

    发明人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

    IPC分类号： B41J2/435

    CPC分类号： B41J2/473 ,  G06K15/1219

    摘要： An image forming apparatus includes an optical scanning device that scans a scan area on an image carrier with light flux containing image information and writes the image information onto an image area in the scan area. In the optical scanning device, a first light receiving unit receives light flux emitted from a light source and reflected by a reflecting optical unit; a second light receiving unit receives light flux that passes through an aperture of the reflecting optical unit, is deflected by a deflecting unit, and heads for outside the image area within the scan area; and a control unit controls a drive signal of the light source based on signals output from the first and second light receiving units.

    摘要翻译： 图像形成装置包括：光扫描装置，其利用含有图像信息的光束扫描图像载体上的扫描区域，并将图像信息写入扫描区域中的图像区域。 在光扫描装置中，第一受光部接收从光源射出并被反射光学单元反射的光束; 接收通过反射光学单元的孔径的光束的第二光接收单元被偏转单元偏转，并且在扫描区域内的图像区域外部接收头部; 并且控制单元基于从第一和第二光接收单元输出的信号来控制光源的驱动信号。

    Optical scanner and image forming apparatus
    2.
    发明授权
    Optical scanner and image forming apparatus 失效
    光学扫描仪和图像形成装置

    公开(公告)号：US07515170B2

    公开(公告)日：2009-04-07

    申请号：US11512122

    申请日：2006-08-30

    申请人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Dan Ozasa

    发明人： Atsufumi Omori ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Dan Ozasa

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： H04N1/40031 ,  H04N1/191 ,  H04N2201/04758

    摘要： An optical scanner includes a light source unit configured to emit light; an optical system configured to cause the light emitted from the light source unit to scan an object so as to form an image on the object; and a control unit configured to control the light source unit. The light source unit includes a plurality of light emitting units arranged in a sub scanning direction, and the control unit controls the light source unit to emit light at different positions on the object by using either n (n: positive integer) light emitting units or n+1 light emitting units selected from among the plurality of light emitting units, according to a positional shift amount of the image in the sub scanning direction.

    摘要翻译： 一种光学扫描器，包括配置成发光的光源单元; 光学系统，被配置为使从所述光源单元发射的光扫描物体以在所述物体上形成图像; 以及控制单元，被配置为控制所述光源单元。 光源单元包括沿副扫描方向布置的多个发光单元，并且控制单元通过使用n（n：正整数）发光单元或者n（n：正整数）发光单元来控制光源单元在物体上的不同位置发光 根据副扫描方向上的图像的位置偏移量，从多个发光单元中选择n + 1个发光单元。

    Circuit for generating pixel clock with fine phase control
    4.
    发明授权
    Circuit for generating pixel clock with fine phase control 失效
    用于产生具有精细相位控制的像素时钟的电路

    公开(公告)号：US07009430B2

    公开(公告)日：2006-03-07

    申请号：US10771521

    申请日：2004-02-05

    申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

    发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

    IPC分类号： H03L7/00

    CPC分类号： H03L7/08 ,  G02B26/127 ,  H03L7/07 ,  H03L7/091 ,  H03L2207/50

    摘要： A circuit for generating a pixel clock for use in scanning a laser beam includes a high-frequency-clock generating circuit which generates a high-frequency clock having a higher frequency than the pixel clock, and a control circuit which generates the pixel clock while shifting a phase of the pixel clock by a shift step proportional to a clock cycle of the high-frequency clock in response to phase data indicative of timing and amounts of phase shifts.

    摘要翻译： 用于产生用于扫描激光束的像素时钟的电路包括：高频时钟产生电路，其生成具有比像素时钟频率更高的高频时钟;以及控制电路，其在移位期间产生像素时钟 响应于指示相位的定时和量的相位数据，通过与高频时钟的时钟周期成比例的移位步长的像素时钟的相位。

    Light-source driving device, optical scanning device, and counting method
    5.
    发明授权
    Light-source driving device, optical scanning device, and counting method 有权
    光源驱动装置，光扫描装置和计数方法

    公开(公告)号：US08237760B2

    公开(公告)日：2012-08-07

    申请号：US12541719

    申请日：2009-08-14

    申请人： Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe ,  Masaaki Ishida

    发明人： Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe ,  Masaaki Ishida

    IPC分类号： B41J2/435 ,  B41J2/47

    CPC分类号： G03G15/326 ,  G02B26/12 ,  G03G15/0435 ,  G06K15/1219

    摘要： A light-source driving device includes a high-frequency clock generating circuit that generates high-frequency clock signals of which phases are different from each other; an image-data generating circuit that generates a plurality of pieces of image data corresponding to light emitting units in accordance with image information; a write control circuit that generates a plurality of pieces of modulation data corresponding to the light emitting units based on the image data and adjusts output timing of the modulation data individually in units of time corresponding to a phase difference of the high-frequency clock signals; and a light-source driving circuit that drives the light emitting units based on a plurality of pieces of PWM data output from the write control circuit.

    摘要翻译： 光源驱动装置包括：高频时钟发生电路，其产生相位彼此不同的高频时钟信号; 图像数据生成电路，根据图像信息生成与发光单元对应的多个图像数据; 写入控制电路，其基于图像数据生成与发光单元对应的多个调制数据，并且以对应于高频时钟信号的相位差的时间为单位来分别调整调制数据的输出定时; 以及基于从写入控制电路输出的多条PWM数据驱动发光单元的光源驱动电路。

    Image forming apparatus controlling the output level of the light source
    7.
    发明授权
    Image forming apparatus controlling the output level of the light source 有权
    控制光源的输出电平的图像形成装置

    公开(公告)号：US07936367B2

    公开(公告)日：2011-05-03

    申请号：US12341332

    申请日：2008-12-22

    申请人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

    发明人： Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

    IPC分类号： B41J2/435

    CPC分类号： B41J2/473 ,  G06K15/1219

    摘要： An image forming apparatus includes an optical scanning device that scans a scan area on an image carrier with light flux containing image information and writes the image information onto an image area in the scan area. In the optical scanning device, a first light receiving unit receives light flux emitted from a light source and reflected by a reflecting optical unit; a second light receiving unit receives light flux that passes through an aperture of the reflecting optical unit, is deflected by a deflecting unit, and heads for outside the image area within the scan area; and a control unit controls a drive signal of the light source based on signals output from the first and second light receiving units.

    摘要翻译： 图像形成装置包括：光扫描装置，其利用含有图像信息的光束扫描图像载体上的扫描区域，并将图像信息写入扫描区域中的图像区域。 在光扫描装置中，第一受光部接收从光源射出并被反射光学单元反射的光束; 接收通过反射光学单元的孔径的光束的第二光接收单元被偏转单元偏转，并且在扫描区域内的图像区域外部接收头部; 并且控制单元基于从第一和第二光接收单元输出的信号来控制光源的驱动信号。

    Image forming apparatus
    8.
    发明授权
    Image forming apparatus 有权
    图像形成装置

    公开(公告)号：US07528625B2

    公开(公告)日：2009-05-05

    申请号：US11204183

    申请日：2005-08-16

    申请人： Dan Ozasa ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

    发明人： Dan Ozasa ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

    IPC分类号： H03K17/16

    CPC分类号： H04L25/0278 ,  H03H7/25 ,  H03H7/40 ,  H03H11/30 ,  H03K19/0005

    摘要： An output device is disclosed that includes an impedance matching section including an impedance adjustment section, and a dummy circuit section having the same configuration as the impedance adjustment section and adapted to calculate an adjustment value for matching an output impedance to a characteristic impedance of the transmission line. The impedance matching section sets the adjustment value to an impedance adjustment section, thereby matching the output impedance to the characteristic impedance. The output device further includes a switching transistor configured to be turned on/off so as to switch the output between an H level and an L level, and a constant current driver configured to add a constant current to the output.

    摘要翻译： 公开了一种输出装置，其包括阻抗匹配部分，该阻抗匹配部分包括阻抗调节部分，以及具有与阻抗调节部分相同配置的虚拟电路部分，并且用于计算用于将输出阻抗与传输特性阻抗匹配的调整值 线。 阻抗匹配部将调整值设定为阻抗调整部，由此将输出阻抗与特性阻抗进行匹配。 输出装置还包括被配置为导通/截止以在H电平和L电平之间切换输出的开关晶体管，以及被配置为向输出添加恒定电流的恒流驱动器。

    Image forming apparatus and semiconductor laser modulation driving apparatus
    10.
    发明申请
    Image forming apparatus and semiconductor laser modulation driving apparatus 审中-公开
    图像形成装置和半导体激光调制驱动装置

    公开(公告)号：US20050089069A1

    公开(公告)日：2005-04-28

    申请号：US10942073

    申请日：2004-09-16

    申请人： Dan Ozasa ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

    发明人： Dan Ozasa ,  Masaaki Ishida ,  Yasuhiro Nihei ,  Atsufumi Omori

    IPC分类号： B41J2/44 ,  G06K15/12 ,  H04N1/04 ,  H04N1/113 ,  H04N1/23 ,  H01S3/10

    CPC分类号： G06K15/129

    摘要： A color image forming apparatus produces a latent image on a photosensitive body based on a signal output from a scanning light detecting part in response to detection of scanning light; a semiconductor laser modulation signal generating part includes a clock generating part and a clock modulation part; a semiconductor laser and a semiconductor laser driving part are provided for each color of yellow, magenta, cyan and black; and further, a plurality of the semiconductor lasers are provided for at least one color of yellow, magenta, cyan and black.

    摘要翻译： 彩色图像形成装置响应于扫描光的检测，基于从扫描光检测部输出的信号，在感光体上产生潜像; 半导体激光调制信号产生部分包括时钟发生部分和时钟调制部分; 为每种颜色的黄，品红，青和黑提供半导体激光器和半导体激光器驱动部件; 此外，为黄色，品红色，青色和黑色的至少一种颜色提供多个半导体激光器。