公开(公告)号：US06947515B2

公开(公告)日：2005-09-20

申请号：US10024416

申请日：2001-12-21

Applicant: Michael B. Neary

Inventor： Michael B. Neary

IPC: H03L7/189 ,  H03L7/199 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H03L7/06

CPC classification number: H03L7/189 ,  H03L7/199 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04758 ,  H04N2201/04772 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: A method for calibrating a VCO within a phase locked loop circuit is disclosed. First, a DAC output voltage is set to its minimum, and a counter M is adjusted until a comparator is its threshold voltage. Next, the DAC is set to another voltage, and counter M is again adjusted to the comparator threshold. This process is repeated for as many steps as desired. When the phase locked loop circuit requests an instantaneous frequency, an interpolation of the requested frequency against the curve created by the above-described method gives the value required by the DAC.

Abstract translation: 公开了一种在锁相环电路内校准VCO的方法。 首先，DAC输出电压被设置为最小值，并且调整计数器M直到比较器为其阈值电压。 接下来，将DAC设置为另一电压，并且将计数器M再次调整为比较器阈值。 根据需要重复这个步骤。 当锁相环电路请求瞬时频率时，根据上述方法产生的曲线对所请求频率的插值给出DAC需要的值。

公开(公告)号：US06931227B2

公开(公告)日：2005-08-16

申请号：US10846705

申请日：2004-05-17

Applicant: Hiroshi Koide

Inventor： Hiroshi Koide

IPC: G03G15/00 ,  G03G15/01 ,  H04N1/047 ,  H04N1/12 ,  G03G15/16

CPC classification number: G03G15/0131 ,  G03G15/0189 ,  G03G15/0194 ,  G03G15/757 ,  G03G2215/0119 ,  G03G2215/0158 ,  H04N1/0473 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04741 ,  H04N2201/04787 ,  H04N2201/04794

Abstract: An image formation apparatus is provided with a photosensitive drum, an optical writing device which writes an image on the outer surface of the photosensitive drum, a developing device which develops the image using toner an intermediate transfer belt onto which the toner image on the photosensitive drum is transferred, a rotation angle detection unit which detects the rotation angle of the photosensitive drum, an eccentric detection unit which detects the amount eccentricity of the photosensitive drum from the rotary axis of the photosensitive drum, and a correction unit which, obtains eccentricity of the photosensitive drum based on the amount eccentricity, the rotation angle and the radius of the photosensitive drum, and corrects a distortion and a color offset in the toner image based on the obtained eccentricity.

Abstract translation: 图像形成装置设置有感光鼓，在感光鼓的外表面上写入图像的光学写入装置，显影装置，其使用调色剂显影图像，中间转印带在感光鼓上的调色剂图像上 检测感光鼓的旋转角度的旋转角度检测单元，检测感光鼓从感光鼓的旋转轴的偏心量的偏心检测单元和校正单元，该校正单元获得感光鼓的偏心度 感光鼓基于偏心量，旋转角度和感光鼓的半径，并且基于获得的偏心度来校正调色剂图像中的变形和颜色偏移。

公开(公告)号：US06930700B2

公开(公告)日：2005-08-16

申请号：US10452458

申请日：2003-06-02

Applicant: Tetsuya Kimura

Inventor： Tetsuya Kimura

IPC: B41J2/44 ,  G02B26/10 ,  G03G15/01 ,  G03G15/04 ,  H04N1/036 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191 ,  H04N1/23 ,  H04N1/50

CPC classification number: H04N1/1916 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N1/506 ,  H04N2201/0082 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: An optical scanner can write a full-color image without occurrence of writing position differences even if a record density is switched. The optical scanner includes a black writing illuminant for optically writing an image at a plurality of record densities and a color writing illuminant for optically writing the image at a predetermined record density. The optical scanner adjusts a resist position for a full-color image with respect to the main and sub-scanning directions by switching a writing position of the black writing illuminant in accordance with a requested record density and then writes the full-color image at that writing position.

Abstract translation: 即使切换记录密度，光学扫描器也可以写入全色图像而不会发生写入位置差异。 光学扫描器包括用于光学地写入多个记录密度的图像的黑色书写光源和用于以预定记录密度光学写入图像的彩色写入光源。 光学扫描器通过根据请求的记录密度切换黑色写入光源的写入位置来调整相对于主扫描方向和副扫描方向的全色图像的抗蚀剂位置，然后将该全色图像写入该 写作位置

公开(公告)号：US20050146596A1

公开(公告)日：2005-07-07

申请号：US11030419

申请日：2005-01-07

Applicant: Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

Inventor： Yasuhiro Nihei ,  Masaaki Ishida ,  Atsufumi Omori ,  Dan Ozasa

IPC: B41J2/44 ,  B41J2/47 ,  G02B26/10 ,  G06K15/12 ,  H04N1/036 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/405

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

Abstract: 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.

Abstract translation: 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：US06903758B1

公开(公告)日：2005-06-07

申请号：US10630073

申请日：2003-07-30

Applicant: David M. Kerxhalli ,  Keith A. May ,  Brian R. Conrow

Inventor： David M. Kerxhalli ,  Keith A. May ,  Brian R. Conrow

IPC: B41J2/44 ,  G03G15/00 ,  G03G15/01 ,  G03G15/04 ,  G03G15/043 ,  G03G21/00 ,  H04N1/047 ,  H04N1/12 ,  H04N1/193 ,  H04N1/29 ,  H04N1/401 ,  H04N1/50

CPC classification number: H04N1/0473 ,  G03G15/0152 ,  G03G15/0163 ,  G03G2215/0161 ,  H04N1/12 ,  H04N1/193 ,  H04N1/506 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04749 ,  H04N2201/04755

Abstract: A method for preserving image squareness and image on image registration in a system having a plurality of imaging stations, each imaging station having an ROS. The method includes adjusting the target skew of a reference ROS within one of the plurality of imaging stations by the angular difference between the actual reference ROS position and the target position for the reference ROS and adjusting the target skew of the reference ROS by the skew of the reference ROS relative to the desired skew for image squareness.

Abstract translation: 一种用于在具有多个成像站的系统中保存图像平方度和图像对准图像的方法，每个成像站具有ROS。 该方法包括通过实际参考ROS位置与参考ROS的目标位置之间的角度差来调整多个成像站之一内的参考ROS的目标偏移，并且通过偏差来调整参考ROS的目标偏移 相对于图像平方度的期望偏移的参考ROS。

公开(公告)号：US20050098716A1

公开(公告)日：2005-05-12

申请号：US10645759

申请日：2003-08-19

Applicant: Masanori Yoshikawa ,  Akinobu Okuda

Inventor： Masanori Yoshikawa ,  Akinobu Okuda

IPC: G02B26/12 ,  H04N1/047 ,  H04N1/113 ,  H04N1/12 ,  H01J3/14 ,  H01J5/16 ,  H01J40/14

CPC classification number: H04N1/047 ,  G02B26/126 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04744

Abstract: A light scanner includes a semiconductor laser, a polygon mirror, a first imaging optical system for guiding a light beam from the laser to the deflection surface of the polygon mirror, a second imaging optical system of a single curved mirror for guiding the light beam from the polygon mirror to a photosensitive drum, and a photodiode for detecting the light beam scanned by the polygon mirror. The first imaging optical system, the polygon mirror, and the second imaging optical system are located at different positions in the sub-scanning direction so that the light beam from the first imaging optical system enters the deflection surface obliquely, and the light beam from the polygon mirror enters the curved mirror obliquely.

Abstract translation: 光扫描器包括半导体激光器，多面镜，用于将来自激光器的光束引导到多面镜的偏转表面的第一成像光学系统，用于引导来自多角镜的偏转表面的光束的单个曲面镜的第二成像光学系统 到感光鼓的多面镜，以及用于检测由多面镜扫描的光束的光电二极管。 第一成像光学系统，多面镜和第二成像光学系统位于副扫描方向上的不同位置，使得来自第一成像光学系统的光束倾斜地进入偏转表面，并且来自 多面镜倾斜地进入曲面镜。

公开(公告)号：US06882357B2

公开(公告)日：2005-04-19

申请号：US10094974

申请日：2002-03-12

Applicant: Atsushi Suganuma

Inventor： Atsushi Suganuma

IPC: B41J19/20 ,  H04N1/047 ,  H04N1/06 ,  B41J2/435

CPC classification number: H04N1/0678 ,  B41J19/202 ,  H04N1/047 ,  H04N1/06 ,  H04N2201/02443 ,  H04N2201/03108 ,  H04N2201/0471 ,  H04N2201/04724 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04739 ,  H04N2201/04756 ,  H04N2201/04772 ,  H04N2201/04789 ,  H04N2201/04798

Abstract: An image is accurately recorded by a light beam on a PS plate wound on a drum which is rotating at a constant speed. A rotary encoder detects information of a recording position in a main scanning direction by the light beam that is emitted from an optical unit to the PS plate. Based on the detected information, a PLL circuit of a recording synchronizing signal generating unit generates an original clock. Pulses of the original clock are counted by a decimating counter, which outputs a decimating instruction to decimate a pulse from the original clock each time the count reaches a preset count. Based on the decimating instruction, a pulse is decimated from the original clock, and a decimated clock is frequency-divided at a fixed frequency-dividing ratio by a frequency divider, which outputs a pixel clock for recording the image. Since the frequency of the pixel clock is varied by decimating the original clock based on the preset count, the image can accurately be recorded on the PS plate by determining in advance the preset count depending on the positional relationship between the PS plate and the optical unit.

Abstract translation: 通过光束将图像精确地记录在缠绕在以恒定速度旋转的滚筒上的PS板上。 旋转编码器通过从光学单元发射到PS板的光束来检测在主扫描方向上的记录位置的信息。 基于检测到的信息，记录同步信号生成单元的PLL电路产生原始时钟。 原始时钟的脉冲由抽取计数器计数，该计数器在每次计数达到预设计数时输出抽取指令以从原始时钟抽取脉冲。 基于抽取指令，从原始时钟脉冲被抽取，并且抽取的时钟以分频器以固定的分频比进行分频，分频器输出用于记录图像的像素时钟。 由于通过基于预设计数来抽取原始时钟来改变像素时钟的频率，所以可以通过根据PS板和光学单元之间的位置关系预先确定预设计数来将图像准确地记录在PS板上 。

公开(公告)号：US06873820B2

公开(公告)日：2005-03-29

申请号：US10106212

申请日：2002-03-27

Applicant: Mitsugu Tanaka ,  Eiichiro Teshima ,  Takuya Mukaibara ,  Tadashi Okanishi

Inventor： Mitsugu Tanaka ,  Eiichiro Teshima ,  Takuya Mukaibara ,  Tadashi Okanishi

IPC: H04N1/053 ,  G03G15/14

CPC classification number: H04N1/00718 ,  H04N1/00724 ,  H04N1/00734 ,  H04N1/00755 ,  H04N1/00774 ,  H04N1/053 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04737 ,  H04N2201/04787

Abstract: In an image forming apparatus and an image forming method, a paper position aberration detecting sensor including a light emitting element and a light receiving element is disposed in the paper conveying path of the image forming apparatus. The amount of paper position aberration in paper conveyance is detected by a counter, and on the basis of the result of the detection, a CPU controls the writing start position of a printed image.

Abstract translation: 在图像形成装置和图像形成方法中，在图像形成装置的纸张传送路径中设置包括发光元件和光接收元件的纸张位置像差检测传感器。 通过计数器检测纸张输送中的纸张位置像差量，并且基于检测结果，CPU控制打印图像的写入开始位置。

公开(公告)号：US06847390B2

公开(公告)日：2005-01-25

申请号：US10197892

申请日：2002-07-19

Applicant: Katsuhiko Maeda

Inventor： Katsuhiko Maeda

IPC: B41J2/44 ,  G02B26/10 ,  G02B26/12 ,  G06K15/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/23 ,  H04N1/50 ,  B41J2/435

CPC classification number: H04N1/506 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04784 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: An image forming apparatus includes at least one image forming mechanism configured to form an image based on image data. Each image forming mechanism includes an optical system, a sensor, an electronic circuit, and a controller. The optical system scans a photosensitive member with a light beam based on image data. The sensor detects the light beam and the electronic circuit stores a correction data table containing light amount data of the light source and corresponding start position shift amount data. The controller controls a light amount of the light source and adjusts a start position of image recording on the photosensitive member in accordance with a sync detect signal. The controller includes a write start position correction unit that adjust the start position of the image recording based on a start position shift amount data when the light amount varies.

Abstract translation: 图像形成装置包括至少一个图像形成机构，被配置为基于图像数据形成图像。 每个图像形成机构包括光学系统，传感器，电子电路和控制器。 光学系统基于图像数据用光束扫描光敏部件。 传感器检测光束，电子电路存储包含光源的光量数据和对应的开始位置偏移量数据的校正数据表。 控制器控制光源的光量，并且根据同步检测信号调节感光部件上的图像记录的开始位置。 所述控制器包括：写入开始位置校正单元，当所述光量变化时，基于开始位置偏移量数据来调整所述图像记录的开始位置。

公开(公告)号：US06825961B2

公开(公告)日：2004-11-30

申请号：US10695287

申请日：2003-10-29

Applicant: Hiroki Yoshida

Inventor： Hiroki Yoshida

IPC: G02B2608

CPC classification number: H04N1/053 ,  G02B26/123 ,  G02B26/125 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04786

Abstract: Provided are a multi-beam scanning optical system capable of implementing high-quality printing in relatively simple structure and at high speed, and an image forming apparatus using it. The multi-beam scanning optical system has an incidence optical unit for guiding a plurality of beams emitted from a light source unit having a plurality of light-emitting regions spaced apart from each other in a main scanning direction, to a deflector; a scanning optical unit for focusing the plurality of beams deflected by the deflector, on a surface to be scanned; and a synchronism-detecting optical unit for converging part of the plurality of beams deflected by the deflector, via a return mirror on a slit surface by a lens section, thereafter guiding the beams to a synchronism detector, and controlling timing of a scan start position on the surface to be scanned, by use of a signal from the synchronism detector. The elements are set so as to satisfy Condition (A) where &dgr;M is a defocus amount in a main scanning section of the beams guided to the synchronism detector and in a view from the slit surface and &dgr;X is a defocus amount at each image height on the surface to be scanned.