公开(公告)号：US07496121B2

公开(公告)日：2009-02-24

申请号：US10803042

申请日：2004-03-18

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： H01S3/00

CPC分类号： H04N1/40037

摘要： A laser modulating and driving device comprises a modulation signal generating unit configured to generate a laser modulation signal consisting of a pair of small swing differential signals based on pixel data, and a driving unit configured to drive a laser according to the laser modulation signal supplied from the modulation signal generating unit.

摘要翻译： 一种激光调制驱动装置，包括：调制信号生成部，被配置为根据像素数据生成由一对小摆动差分信号构成的激光调制信号，以及驱动部，根据由激光调制信号 调制信号生成单元。

公开(公告)号：US07456856B2

公开(公告)日：2008-11-25

申请号：US11355882

申请日：2006-02-17

申请人： Yasuhiro Nihei

发明人： Yasuhiro Nihei

IPC分类号： B41J2/435 ,  B41J2/47

CPC分类号： H04N1/053 ,  G06K15/1219 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04786

摘要： The present invention discloses a clock signal generation circuit for generating one or more clock signals for performing a scanning operation by scanning a light beam from a light source to a scan target. The clock signal generation circuit includes a determination circuit for determining authenticity of start information in accordance with at least one of the length of the start information and the timing at which the start information is input, and a generation circuit for generating the clock signals in synchronization with the start information when the determination circuit determines that the start information is authentic.

摘要翻译： 本发明公开了一种时钟信号生成电路，用于通过将来自光源的光束扫描到扫描对象来产生用于执行扫描操作的一个或多个时钟信号。 时钟信号产生电路包括一个确定电路，用于根据开始信息的长度和开始信息被输入的定时中的至少一个来确定起始信息的真实性;以及生成电路，用于同步地产生时钟信号 当确定电路确定开始信息是可信的时，具有开始信息。

公开(公告)号：US07256815B2

公开(公告)日：2007-08-14

申请号：US10323837

申请日：2002-12-20

申请人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Magane Aoki ,  Yasuhiro Nihei

发明人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Magane Aoki ,  Yasuhiro Nihei

IPC分类号： B41J2/435

CPC分类号： G02B26/123 ,  B41J2/473

摘要： An optical scan device having an optical deflector reflecting a light beam from a light beam source so as to deflect the light beam and having a surface to be scanned on which information is written such that the light beam deflected by the deflector scans the surface is disclosed. Optical detectors are arranged at least in two locations, a start side of writing and an end side of writing, which locations are outside an effective writing area. A measuring part measures a scan time required by the light beam deflected by the optical deflector to scan a range between the optical detectors. A correcting part corrects each dot position of image data in the effective writing area to an arbitrary position based on a variation amount of the measured scan time.

摘要翻译： 一种光学扫描装置，其具有反射来自光束源的光束的光学偏转器，以便偏转光束并且具有写入信息的要被扫描的表面，使得偏转器偏转的光束扫描该表面 。 光检测器至少布置在写入的起始侧和写入的结束侧的两个位置中，哪些位置在有效写入区域之外。 测量部件测量由光学偏转器偏转的光束所需的扫描时间，以扫描光学检测器之间的范围。 校正部分基于测量的扫描时间的变化量将有效写入区域中的图像数据的每个点位置校正到任意位置。

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。

公开(公告)号：US08760738B2

公开(公告)日：2014-06-24

申请号：US12978833

申请日：2010-12-27

申请人： Yasuhiro Nihei

发明人： Yasuhiro Nihei

IPC分类号： H04N1/46

CPC分类号： H04N1/113 ,  H04N1/0283 ,  H04N2201/04748 ,  H04N2201/04767

摘要： A method for measuring a deviation in timing of start of writing in scanning lines is implemented by an optical scanning device that scans a surface to be scanned with light beams from light-emitting elements having first and second light-emitting elements which are arranged so as to be displaced from each other in a direction corresponding to a direction of the scanning lines. The method includes: detecting timing at which light from the first light-emitting element is received by a light receiving element, as a first time, the light receiving element outputting a synchronization detecting signal before start of writing; detecting timing at which light from the second light-emitting element is received by the light receiving element, as a second time; and obtaining the deviation in timing for the second light-emitting element with respect to the first light-emitting element based on a difference between the first and second time.

摘要翻译： 用于测量扫描线中写入开始时间偏差的方法由光学扫描装置实现，该扫描装置用具有第一和第二发光元件的发光元件的光束扫描待扫描的表面， 在与扫描线的方向对应的方向上彼此偏移。 该方法包括：第一次，检测在开始写入之前，光接收元件输出同步检测信号的光接收元件接收来自第一发光元件的光的定时; 第二次检测来自第二发光元件的光被光接收元件接收的定时; 并且基于第一和第二时间之间的差异获得第二发光元件相对于第一发光元件的定时偏差。

公开(公告)号：US08446444B2

公开(公告)日：2013-05-21

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： B41J2/435 ,  B41J2/455 ,  B41J2/47

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：US08310516B2

公开(公告)日：2012-11-13

申请号：US11913558

申请日：2006-08-30

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： B41J2/45 ,  B41J2/47

CPC分类号： G02B26/123 ,  B41J2/455 ,  B41J2/473 ,  H04N1/1135 ,  H04N1/40031

摘要： A light scanning apparatus having plural light sources includes a light source control unit configured to control the light sources to form L (L≧2) light beam arrays aligned in a sub scanning direction each of which L light beam arrays are formed by causing M ((N−1)≧M≧1) light sources out of N (N≧2) light sources assigned to each of the L light beam arrays to emit light as M light emitting sources, wherein each of the L light beam arrays forms a pixel and a total of L pixels aligned in the sub scanning direction are formed.

摘要翻译： 具有多个光源的光扫描装置包括光源控制单元，被配置为控制光源以形成沿副扫描方向排列的L（L≥2）个光束阵列，每个L光束阵列通过使M（ （N-1）≥M≥1）分配给每个L光束阵列的N（N≥2）个光源中的光源作为M个发光源发光，其中L个光束阵列中的每一个形成 形成在副扫描方向上对齐的L个像素和总共L个像素。

公开(公告)号：US08253768B2

公开(公告)日：2012-08-28

申请号：US11565315

申请日：2006-11-30

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： B41J2/47 ,  B41J2/385 ,  B41J15/14

CPC分类号： B41J2/473 ,  B41J2/455 ,  G02B26/123 ,  G02B26/124

摘要： A disclosed optical scanner includes a light source unit and a control unit configured to control the light source unit. Light emitted from the light source unit is scanned to expose a scan object surface and form an image on the scan object surface. The light source unit includes plural light sources arranged at a density equal to N (N being an integer of two or more) times higher than a density of pixels on the scan object surface. The control unit controls the light source unit such that one pixel is formed by at least two of the light sources.

摘要翻译： 所公开的光学扫描器包括光源单元和被配置为控制光源单元的控制单元。 从光源单元发射的光被扫描以暴露扫描对象表面并在扫描对象表面上形成图像。 光源单元包括以等于扫描对象面上的像素密度的N（N为2以上的整数）的密度排列的多个光源。 控制单元控制光源单元，使得一个像素由至少两个光源形成。

公开(公告)号：US07973817B2

公开(公告)日：2011-07-05

申请号：US11844854

申请日：2007-08-24

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。

公开(公告)号：US20100214637A1

公开(公告)日：2010-08-26

申请号：US12693775

申请日：2010-01-26

申请人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori

发明人： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori

IPC分类号： G02B26/08

CPC分类号： B41J2/473 ,  G02B26/10 ,  G03G15/04072 ,  G03G15/0435 ,  G03G2215/0404 ,  G06K15/1261 ,  H04N1/02865 ,  H04N1/113 ,  H04N2201/04767

摘要： In a light-source driving device, a high-frequency clock generating circuit generates two high-frequency clock signals having mutually different phases, an image-data creating circuit creates a plurality of image data corresponding to a plurality of light-emitting units according to image information, and a write control circuit creates a plurality of modulated data corresponding to the light-emitting units from the plurality of image data and separately controls output timings of the plurality of modulated data by using a time, as a unit, corresponding to a phase difference between the two high-frequency clock signals. The write control circuit includes two data switching circuits that set a correspondence relation between image data and PWM data based on one of a relation between an array of the light-emitting units and an array of a plurality of light spots and a relation between a surface to be scanned and a main scanning direction.

摘要翻译： 在光源驱动装置中，高频时钟生成电路生成具有相互不同相位的两个高频时钟信号，图像数据生成电路根据与图像数据生成电路对应的多个发光单元生成多个图像数据 图像信息和写入控制电路从多个图像数据创建对应于发光单元的多个调制数据，并且通过使用对应于一个单元的时间单独地控制多个调制数据的输出定时 两个高频时钟信号之间的相位差。 写控制电路包括两个数据切换电路，其基于发光单元的阵列与多个光点的阵列之间的关系和表面之间的关系之一来设置图像数据和PWM数据之间的对应关系 被扫描和主扫描方向。