公开(公告)号：US20140333941A1

公开(公告)日：2014-11-13

申请号：US14269332

申请日：2014-05-05

申请人： Muneaki IWATA ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

发明人： Muneaki IWATA ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

IPC分类号： G06F3/12

CPC分类号： G03G15/04027 ,  H04N1/40037 ,  H04N1/4058 ,  H04N1/4092

摘要： An image forming apparatus for forming an image in accordance with light to be emitted from a light source includes: a digital half-toning unit configured to convert a uniform-pixel-value region of image data to a parallel-line pattern formed with a plurality of parallel lines extending obliquely with respect to a direction, in which pixels are arrayed, thereby expressing each gray level of the image data as an area percentage; a modulated-signal generating unit configured to generate a modulated signal by modulating the converted image data with a clock signal; a light-source driving unit configured to drive the light source according to the modulated signal; and an edge control unit configured to narrow a to-be-illuminated region, which is to be illuminated by the light from the light source, in each of edge neighborhoods of the lines constituting the parallel-line pattern, while increasing intensity of the light.

摘要翻译： 根据从光源发出的光形成图像的图像形成装置包括：数字半色调单元，被配置为将图像数据的均匀像素值区域转换为形成有多个的平行线图案 相对于其中排列像素的方向倾斜地延伸的平行线，从而将图像数据的每个灰度级表示为面积百分比; 调制信号生成单元，被配置为通过用时钟信号调制转换的图像数据来生成调制信号; 光源驱动单元，被配置为根据调制信号驱动光源; 以及边缘控制单元，被配置为在构成平行线图案的线的每个边缘邻域中缩小要被来自光源的光照明的被照明区域，同时增加光的强度 。

公开(公告)号：US20120293783A1

公开(公告)日：2012-11-22

申请号：US13473278

申请日：2012-05-16

申请人： Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

发明人： Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

IPC分类号： G03B27/54 ,  G02B26/10 ,  H05B37/02

CPC分类号： H05B33/0824 ,  G02B26/127 ,  G03B27/54 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04774 ,  H04N2201/04789 ,  H05B33/0851

摘要： A light source drive device includes a first current source which provides a predetermined current to a light source corresponding to a predetermined light output, and a second current source which provides an overshoot current to the light source synchronized with the predetermined current. A processor is configured to set an overshoot time during which the overshoot current is provided to the light source. Further, an overshoot current is set which is applied to the light source. The overshoot time is set so that the overshoot time based on the rising of the predetermined current to when a light emission of the light source is detected.

摘要翻译： 光源驱动装置包括：向与预定光输出相对应的光源提供预定电流的第一电流源和与预定电流同步地向光源提供过冲电流的第二电流源。 处理器被配置为设置将过冲电流提供给光源的过冲时间。 此外，设置施加到光源的过冲电流。 设定过冲时间，使得基于预定电流的上升到检测到光源的发光时的过冲时间。

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：US20120189328A1

公开(公告)日：2012-07-26

申请号：US13354789

申请日：2012-01-20

申请人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

发明人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

IPC分类号： G03G15/04

CPC分类号： G03G15/043 ,  G03G15/0189 ,  G03G15/5058

摘要： Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.

摘要翻译： 根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。 处理装置产生用于校正光源输出的校正数据，以根据检测结果抑制密度变化。 处理装置修正校正数据，使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出，表面上的位置之间的关系 的主扫描方向上的感光元件和校正后的输出，并且修正校正数据，使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出 超过最大额定输出。

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。

公开(公告)号：US07936493B2

公开(公告)日：2011-05-03

申请号：US11471640

申请日：2006-06-21

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： G02B26/08 ,  G02B26/10 ,  G02B26/12

CPC分类号： G02B26/125 ,  B41J2/0057 ,  G02B26/127 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/195 ,  H04N2201/0082 ,  H04N2201/03158 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04791

摘要： An optical scanning apparatus that includes a light source unit having plural main light sources that are two-dimensionally arranged in the main scanning direction and the sub scanning direction, and plural sub light sources that are arranged between rows of the main light sources aligned in the main scanning direction. The optical scanning apparatus also includes an optical system configured to scan light emitted from the light source unit on a scanning object to form an image on the scanning object, and a control apparatus configured to adjust a main scanning direction image position by controlling two of the main light sources that are juxtaposed to each other with respect to the main scanning direction and adjust a sub scanning direction image position by controlling a main light source and a sub light source that are adjacent to each other.

摘要翻译： 一种光学扫描装置，包括具有在主扫描方向和副扫描方向上二维配置的多个主光源的光源单元，以及配置在主光源的行之间的多个子光源， 主扫描方向。 光学扫描装置还包括：光学系统，被配置为扫描从扫描对象上的光源单元发出的光，以在扫描对象上形成图像;以及控制装置，被配置为通过控制扫描对象中的两个来控制主扫描方向图像位置 主光源相对于主扫描方向彼此并置，并且通过控制彼此相邻的主光源和副光源来调整副扫描方向图像位置。

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。

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。

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：US20080291259A1

公开(公告)日：2008-11-27

申请号：US12126103

申请日：2008-05-23

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

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

IPC分类号： B41J2/435

CPC分类号： B41J2/473

摘要： A light source driving device which drives a plurality of light emitting parts provided in a light source to emit a plurality of light beams based on image information, includes a plurality of driving circuits configured to drive the plurality of light emitting parts. Each of the driving circuits includes a signal generation circuit that generates a modulation signal to control a light emitting intensity of the corresponding light emitting part based on the image information, a detection circuit that detects a light emitting status of the corresponding light emitting part; and a light emitting circuit that outputs a driving signal to the corresponding light emitting part to emit a light beam in accordance with the modulation signal and adjustment data obtained based on the light emitting status of at least one of the plurality of light emitting parts.

摘要翻译： 基于图像信息驱动设置在光源中以发射多个光束的多个发光部分的光源驱动装置包括被配置为驱动多个发光部分的多个驱动电路。 每个驱动电路包括：信号产生电路，产生基于图像信息来控制对应的发光部分的发光强度的调制信号;检测电路，其检测对应的发光部分的发光状态; 以及发光电路，其根据所述调制信号和基于所述多个发光部中的至少一个发光部的发光状态获得的调整数据，向对应的发光部输出驱动信号以发射光束。