公开(公告)号：US07995251B2

公开(公告)日：2011-08-09

申请号：US12055666

申请日：2008-03-26

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

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

IPC分类号： H04N1/04

CPC分类号： G02B26/123 ,  G02B26/124 ,  H04N1/40068

摘要： A light-source drive control unit divides each pixel of the image data into a plurality of subpixels, deletes certain subpixels from the image data in accordance with predetermined correction data, shifts remaining subpixels in the sub-scanning direction thereby obtaining reduced image data, and controls a plurality of light sources based on the reduced image data in such a manner that one line of the subpixels is formed with a light beam emitted from a corresponding one of the light sources.

摘要翻译： 光源驱动控制单元将图像数据的每个像素分成多个子像素，根据预定的校正数据从图像数据中删除某些子像素，在副扫描方向上移动剩余的子像素，从而获得缩小的图像数据，以及 基于缩小图像数据控制多个光源，使得一行子像素由从相应的一个光源发射的光束形成。

公开(公告)号：US07701480B2

公开(公告)日：2010-04-20

申请号：US12029115

申请日：2008-02-11

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

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

IPC分类号： B41J2/435 ,  B41J2/47

CPC分类号： B41J2/45

摘要： A circuit for driving a plurality of light emitting units includes a current biasing unit that biases a light emitting current with an overshoot current and supplies the resultant current to each of the light emitting units. The light emitting current is determined based on an amount of light emitted from each of the light emitting units.

摘要翻译： 用于驱动多个发光单元的电路包括：电流偏置单元，其利用过冲电流偏置发光电流，并将所得到的电流提供给每个发光单元。 基于从每个发光单元发射的光量来确定发光电流。

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。

公开(公告)号：US20090174915A1

公开(公告)日：2009-07-09

申请号：US12348618

申请日：2009-01-05

申请人： YASUHIRO NIHEI ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

发明人： YASUHIRO NIHEI ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa ,  Jun Tanabe

IPC分类号： H04N1/04

CPC分类号： H04N1/053 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04789

摘要： A write control circuit includes a first data switching circuit that sets a correspondence relationship between signals from line buffers and input signals to a delay circuitry, based on a signal from a CPU; and a second data switching circuit that sets a correspondence relationship between output signals of the delay circuitry and drive signals, based on a signal from the CPU. This enables a plurality of light emitting sections to be driven properly, regardless of a main scanning direction and an arrangement of a plurality of light spots being in any of CASE-1 to CASE-4 in an optical scanning device.

摘要翻译： 写控制电路包括：第一数据切换电路，其基于来自CPU的信号，将来自线缓冲器的信号和输入信号之间的对应关系设置为延迟电路; 以及第二数据切换电路，其基于来自CPU的信号来设置延迟电路的输出信号和驱动信号之间的对应关系。 这使得能够适当地驱动多个发光部，而不管主扫描方向和在光学扫描装置中的CASE-1至CASE-4中的任何一个的多个光点的布置。

公开(公告)号：US20080088893A1

公开(公告)日：2008-04-17

申请号：US11882691

申请日：2007-08-03

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

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

IPC分类号： H04N1/46

CPC分类号： H04N1/40037 ,  G06K15/1219 ,  G06K15/1261 ,  H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04787 ,  H04N2201/04794

摘要： An optical scanning device of the invention includes: n-odd (n≧2) light sources disposed at different positions at least in a sub scanning direction; a light source driving control part configured to control a light emitting state of the light source; and a sub-scanning pixel position detecting part configured to depict one pixel with m-odd (n≧m≧2) light sources of the n-odd (n≧2) light sources and to detect a deviation in position of the one pixel in a sub scanning direction, wherein the light source driving control part is configured to correct the deviation in position of the one pixel in the sub scanning direction at a resolution equal to or higher than a density of the pixel, depicted with the m-odd light sources, by controlling the light emitting state of the m-odd light sources on the basis of a result of detection with the sub-scanning pixel position detecting part.

摘要翻译： 本发明的光学扫描装置包括：至少在副扫描方向上设置在不同位置的n奇数（n> = 2）个光源; 被配置为控制所述光源的发光状态的光源驱动控制部; 以及副扫描像素位置检测部，被配置为用n个奇数（n> = 2）个光源的m奇数（n> = m> = 2）个光源描绘一个像素，并且检测位于 在副扫描方向上的一个像素，其中光源驱动控制部被配置为以等于或高于像素的密度的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素的像素 通过基于用副扫描像素位置检测部分的检测结果控制m个奇数光源的发光状态，可以获得m个奇数光源。

公开(公告)号：US08687036B2

公开(公告)日：2014-04-01

申请号：US12126265

申请日：2008-05-23

申请人： Masaaki Ishida ,  Atsufumi Omori ,  Jun Tanabe

发明人： Masaaki Ishida ,  Atsufumi Omori ,  Jun Tanabe

IPC分类号： B41J2/435 ,  B41J2/47

CPC分类号： G03G15/326 ,  G03G15/0435 ,  G03G2215/0404 ,  G03G2215/0407

摘要： A light source driver mounted on a rectangular-shaped substrate includes a plurality of output parts that output driving signals to drive a plurality of light-emitting bodies. The plurality of output parts are disposed in a vicinity of the two sides of the substrate, the two sides of the substrate forming a corner of the substrate.

摘要翻译： 安装在矩形基板上的光源驱动器包括输出驱动信号以驱动多个发光体的多个输出部。 多个输出部分设置在基板的两侧附近，基板的两侧形成基板的角部。

公开(公告)号：US07826110B2

公开(公告)日：2010-11-02

申请号：US11763062

申请日：2007-06-14

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

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

IPC分类号： H04N1/04

CPC分类号： H04N1/1912 ,  H04N1/0473 ,  H04N1/1917 ,  H04N2201/0082 ,  H04N2201/04787

摘要： A light scanning apparatus is provided that has plural light sources which scan plural light beams in a main scanning direction. The light scanning apparatus comprises a light source control unit that controls the plural light sources. Where an array of N (N≧2) light sources aligned in a sub scanning direction and capable of scanning different positions in the sub scanning direction is called a virtual light source array, and where L (L≧2) virtual light source arrays aligned in the sub scanning direction are formed, the light source control unit causes M ((N−1)≧M≧1) light sources out of the N light sources of each of the L virtual light source arrays to emit light to form a pixel and thereby to form a total of L pixels aligned in the sub scanning direction by giving the same data to the M light sources of each of the L virtual light source arrays.

摘要翻译： 提供一种具有沿主扫描方向扫描多个光束的多个光源的光扫描装置。 光扫描装置包括控制多个光源的光源控制单元。 在副扫描方向上排列并能够沿副扫描方向扫描不同位置的N（N≥2）个光源阵列被称为虚拟光源阵列，其中L（L≥2）虚拟光源阵列对准 在副扫描方向上形成光源控制单元，使L个虚拟光源阵列的N个光源中的M（（N-1）≥M≥1）个光源发光，形成像素 从而通过向L个虚拟光源阵列中的每一个的M个光源提供相同的数据，形成在副扫描方向上对齐的L个像素的总数。

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。

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。

公开(公告)号：US08089665B2

公开(公告)日：2012-01-03

申请号：US11925292

申请日：2007-10-26

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

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

IPC分类号： H04N1/04

CPC分类号： H04N1/0402 ,  B41J2/473 ,  H04N1/0414 ,  H04N1/0458 ,  H04N1/1911 ,  H04N1/1916

摘要： An optical scanning device includes n-odd (n≧2) light sources disposed at different positions at least in a sub-scanning direction, a pixel forming part in which one pixel is depicted by light beams emitted from m-odd (n≧m≧2) light sources of the n-odd light sources and a distance of adjacent light sources for emitting the light beams in the sub-scanning direction is less than 5 μm, and a light source driving control part configured to control an emitting state of the light sources for depicting the one pixel and conduct an emission driving control for moving a gravity center of the one pixel in the sub-scanning direction.

摘要翻译： 光扫描装置包括至少在副扫描方向上设置在不同位置的n奇（n≥2）个光源，像素形成部分，其中由m奇数（n≥m）发射的光束描绘一个像素 ≥2）个奇数光源的光源和在副扫描方向上发射光的相邻光源的距离小于5μm，光源驱动控制部被配置为控制发光状态 用于描绘一个像素并且执行用于沿副扫描方向移动一个像素的重心的发射驱动控制的光源。