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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。

    Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus
    5.
    发明授权
    Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus 有权
    像素时钟创建方法，像素时钟创建装置，光学扫描装置和图像形成装置

    公开(公告)号：US07834902B2

    公开(公告)日：2010-11-16

    申请号：US11741871

    申请日：2007-04-30

    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： B41J2/435

    CPC分类号： G02B26/127 ,  G06K15/1219

    摘要： In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.

    摘要翻译： 在像素时钟创建方法和装置中，产生高频时钟。 以高频时钟的半周期的精度检测扫描预定扫描长度所需的扫描时间，以输出指示检测到的扫描时间的检测值。 将检测值和预定目标值进行比较以输出比较结果。 基于比较结果创建相位数据。 创建基于高频时钟和相位数据来控制相位的像素时钟。

    OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS
    6.
    发明申请
    OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS 失效
    光学扫描装置和图像形成装置

    公开(公告)号：US20090195635A1

    公开(公告)日：2009-08-06

    申请号：US12358867

    申请日：2009-01-23

    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： B41J15/14

    CPC分类号： G02B26/127

    摘要： A deflector deflects a light beam emitted from a light source including a plurality of light-emitting units. A scanning optical system focuses the light beam deflected by the deflector on a scanning target surface. A monitoring photoreceiver receives a part of a light beam deflected by the deflector and directed toward an area within a scanning area outside an image area. A detecting unit individually detects emission powers of at least two light-emitting units based on an output signal of the monitoring photoreceiver in a single sweep of scanning.

    摘要翻译： 偏转器偏转从包括多个发光单元的光源发射的光束。 扫描光学系统将由偏转器偏转的光束聚焦在扫描目标表面上。 监视光接收器接收由偏转器偏转并被指向图像区域外的扫描区域内的区域的一部分光束。 检测单元在单次扫描扫描中基于监视光接收器的输出信号单独地检测至少两个发光单元的发射功率。

    Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus
    7.
    发明授权
    Pixel clock and pulse-modulation-signal generating device, optical scanner, and image forming apparatus 有权
    像素时钟和脉冲调制信号产生装置，光学扫描器和图像形成装置

    公开(公告)号：US07327379B2

    公开(公告)日：2008-02-05

    申请号：US11030419

    申请日：2005-01-07

    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： B41J2/435

    CPC分类号： H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04794

    摘要： A pixel clock and pulse-modulation-signal generating device includes a high-frequency-clock generating unit that generates a high-frequency clock; a modulation-data generating unit that generates, based on pixel control data that specifies a pixel length and image data, phase data that indicates a transition timing of a pixel clock and modulation data that indicates a desired bit pattern that corresponds to the image data; a pixel-clock generating unit that generates a pixel clock based on the high-frequency clock, the phase data, and a horizontal synchronization signal; and a serial-modulation-signal generating unit that inputs the modulation data, and outputs a pulse modulation signal in a serial pulse string based on the high-frequency clock.

    摘要翻译： 像素时钟和脉冲调制信号发生装置包括产生高频时钟的高频时钟产生单元; 调制数据生成单元，其基于指定像素长度和图像数据的像素控制数据生成指示像素时钟的转移定时的相位数据和表示与图像数据对应的期望位图案的调制数据; 像素时钟生成单元，其基于高频时钟，相位数据和水平同步信号生成像素时钟; 以及串行调制信号生成单元，其输入调制数据，并且基于高频时钟输出串行脉冲串中的脉冲调制信号。

    Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus
    8.
    发明授权
    Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus 有权
    像素时钟创建方法，像素时钟创建装置，光学扫描装置和图像形成装置

    公开(公告)号：US07212224B2

    公开(公告)日：2007-05-01

    申请号：US10953372

    申请日：2004-09-30

    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： B41J2/47 ,  B41J2/435

    CPC分类号： G02B26/127 ,  G06K15/1219

    摘要： In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high frequency clock to output a detection value indicating the detected scanning time. The detection value and a predetermined target value are compared to output a comparison result. A phase data is created based on the comparison result. A pixel clock whose phase is controlled based on both the high frequency clock and the phase data is created.

    摘要翻译： 在像素时钟创建方法和装置中，产生高频时钟。 以高频时钟的半周期的精度检测扫描预定扫描长度所需的扫描时间，以输出指示检测到的扫描时间的检测值。 将检测值和预定目标值进行比较以输出比较结果。 基于比较结果创建相位数据。 创建基于高频时钟和相位数据来控制相位的像素时钟。

    VOLTAGE CONTROLLED OSCILLATOR, PLL CIRCUIT, PULSE MODULATION SIGNAL GENERATING CIRCUIT, SEMICONDUCTOR LASER MODULATION DEVICE AND IMAGE FORMING APPARATUS
    9.
    发明申请
    VOLTAGE CONTROLLED OSCILLATOR, PLL CIRCUIT, PULSE MODULATION SIGNAL GENERATING CIRCUIT, SEMICONDUCTOR LASER MODULATION DEVICE AND IMAGE FORMING APPARATUS 有权
    电压控制振荡器，PLL电路，脉冲调制信号发生电路，半导体激光器调制装置和图像形成装置

    公开(公告)号：US20070080753A1

    公开(公告)日：2007-04-12

    申请号：US11608352

    申请日：2006-12-08

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

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

    IPC分类号： H03L7/00

    CPC分类号： H03L7/0812 ,  H03K3/0315 ,  H03K3/0322 ,  H03L7/0891 ,  H03L7/0995 ,  H03L7/18

    摘要： An oscillation frequency control part includes a voltage-to-current converting circuit converting an input voltage to a current having a value corresponding to the input voltage, and outputting a current in proportion to the current obtained from the voltage-to-current converting circuit. An oscillating circuit part includes a ring oscillator, wherein a current in proportion to the output current of the oscillation frequency control part flows through the ring oscillator so that the oscillation frequency in the ring oscillator is controlled by the output current of the oscillation frequency control part. The voltage-to-current converting circuit has linear voltage-to-current conversion characteristics in a predetermined range of the input voltage including a ground potential.

    摘要翻译： 振荡频率控制部分包括将输入电压转换为具有与输入电压相对应的值的电流的电压 - 电流转换电路，并且与从电压 - 电流转换电路获得的电流成比例地输出电流。 振荡电路部分包括环形振荡器，其中与振荡频率控制部分的输出电流成比例的电流流过环形振荡器，使得环形振荡器中的振荡频率由振荡频率控制部分的输出电流控制 。 电压 - 电流转换电路在包括接地电位的输入电压的预定范围内具有线性的电压 - 电流转换特性。