公开(公告)号：US07129964B2

公开(公告)日：2006-10-31

申请号：US11003521

申请日：2004-12-06

Applicant: Takeshi Akiyama ,  Isamu Ozawa

Inventor： Takeshi Akiyama ,  Isamu Ozawa

IPC: G03G21/00 ,  B41J2/447

CPC classification number: G06K15/1219 ,  H04N1/053 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04768 ,  H04N2201/04789

Abstract: In a multibeam-type image printing apparatus, a process of adjusting a beam scanning position at which a photosensitive body is scanned is simplified. More specifically, consumption of a developing agent such as toner or the like is suppressed, and the time required for the adjustment process is shortened. A test pattern is formed on the photosensitive body using the first beam out of a plurality of beams, thereby detecting the irradiation position of the first beam with respect to the photosensitive body. Correction data for all the beams are generated on the basis of adjustment data as the detection result and predetermined beam information (information indicating a relative positional relationship between the plurality of beams on the photosensitive body). Image transfer clocks and scanning start positions are set on the basis of the correction data.

公开(公告)号：US20060227207A1

公开(公告)日：2006-10-12

申请号：US11092888

申请日：2005-03-29

Applicant: Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

Inventor： Kenichi Komiya ,  Koji Tanimoto ,  Daisuke Ishikawa ,  Yuji Inagawa

IPC: B41J2/47

CPC classification number: G02B26/122 ,  G02B26/127 ,  G06K15/1204 ,  G06K15/1209 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04767 ,  H04N2201/04798

Abstract: An image forming apparatus comprises a light generator (e.g., laser) generating a scanning light beam and a driver driving the light generator depending on a drive signal to be provided. In this apparatus, data formed of image information at each pixel of each line along a main scan direction of an image to be targeted are distributed into a plurality of strings (i.e., channels) of data (e.g., two strings). Concerning each pixel provided by data in each string, information indicative of both a start and an end of modulation (e.g., PWM) is then produced. By using the start and end information, a modulator performs modulation depending on the data of each pixel in each string, providing a modulated signal. The modulated signals from the plural strings are mutually synthesized at synchronizes timings, being provided as the drive signal and given to the driver.

Abstract translation: 图像形成装置包括根据要提供的驱动信号产生扫描光束的光发生器（例如激光器）和驱动光发生器的驱动器。 在该装置中，沿着要对象的图像的主扫描方向的每行的每个像素处的图像信息形成的数据被分配到多个数据串（例如，两个串）中。 关于每个串中由数据提供的每个像素，随后产生指示调制的开始和结束（例如PWM）的信息。 通过使用开始和结束信息，调制器根据每个串中每个像素的数据执行调制，从而提供调制信号。 来自多个串的调制信号在同步定时被相互合成，作为驱动信号提供给驱动器。

公开(公告)号：US20060114309A1

公开(公告)日：2006-06-01

申请号：US11000835

申请日：2004-12-01

Applicant: Craig Bush

Inventor： Craig Bush

IPC: B41J2/385 ,  G01D15/06 ,  G03G15/01

CPC classification number: G03G15/043 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A bi-directional electrophotographic raster imaging system that sweeps a modulated light beam across an imaging region of a photosensitive surface to create both forward-going and reverse-going scanlines of dot data on the imaging region, and which compensates for image misalignment that may be caused by varying the power used to drive a laser light source that generates the modulated light beam. An SOS photosensor detects the beginning of each scanline in both forward and reverse directions, outputting an SOS signal used to create both forward and reverse margins. When the laser power is varied, compensating data is used to correct the forward and reverse margins to keep them aligned (straight), even though the beginning of the scanline locations for both forward and reverse scans are affected in opposite directions by an increase or decrease in laser power.

Abstract translation: 一种双向电子照相光栅成像系统，其将调制的光束扫过感光表面的成像区域，以在成像区域上产生点数据的前进扫描线和反向扫描线，并补偿图像未对准 这是由于改变用于驱动产生调制光束的激光光源的功率而引起的。 SOS光电传感器在正向和反向方向上检测每条扫描线的开始，输出用于创建正向和反向边距的SOS信号。 当激光功率变化时，补偿数据用于校正正向和反向余量以保持它们对齐（直线），即使正向和反向扫描的扫描线位置的开始在相反方向上受到增加或减少的影响 在激光功率。

公开(公告)号：US07046266B1

公开(公告)日：2006-05-16

申请号：US09581377

申请日：1999-03-15

Applicant: Wolfgang Retschke ,  Wolfgang Senf ,  Steffen Rücker ,  Uwe Klowsky ,  Udo Battig ,  Ulrich Baumann

Inventor： Wolfgang Retschke ,  Wolfgang Senf ,  Steffen Rücker ,  Uwe Klowsky ,  Udo Battig ,  Ulrich Baumann

IPC: B41J2/47

CPC classification number: H04N1/192 ,  G03F7/203 ,  G03F7/2053 ,  G03F9/00 ,  H04N1/1008 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04718 ,  H04N2201/04732 ,  H04N2201/04737 ,  H05K3/0082

Abstract: A method of scanning for writing a pattern on a surface, including providing a scanning beam comprised of a plurality of independently addressable sub-beams, scanning the surface with the scanning beam a plurality of times, the sub-beams scanning the surface side-by-side in the cross-scan direction, each sub-beam being modulated to reflect information to be written, and overlapping the beams in successive scans in the cross scan direction such that all written areas of the surface are written on during at least two scans.

Abstract translation: 一种在表面上扫描图案的方法，包括提供由多个可独立寻址的子光束组成的扫描光束，多次扫描光束扫描该表面，子光束扫描表面侧面 在横扫描方向上，每个子光束被调制以反映待写入的信息，并且在横扫扫描方向上以连续扫描重叠光束，使得在至少两次扫描期间写入表面的所有写入区域 。

公开(公告)号：US20060072002A1

公开(公告)日：2006-04-06

申请号：US11285066

申请日：2005-11-23

Applicant: Kazumi Kimura

Inventor： Kazumi Kimura

IPC: B41J2/435

CPC classification number: G02B26/127 ,  H04N1/047 ,  H04N1/113 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/04703 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04767 ,  H04N2201/04789 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: A scanning optical apparatus includes a light source capable of being modulated, a deflecting element for deflecting and scanning a beam emitted from the light source, a scanning optical element for imaging the deflected beam into a spot shape on a scanned surface, and an optical element for synchronous detection for directing the deflected beam from the deflecting element to a sensor to take the timing of image writing beginning. The scanning optical apparatus further inclueds a scanning position detecting device for making the optical axis of the optical element for synchronous detection and the principal ray of the beam from the deflecting element for taking the timing of image writing beginning coincident with each other, and detecting the position of the beam at a point having at least one image height separate from the optical axis of the scanning optical element.

公开(公告)号：US20060055765A1

公开(公告)日：2006-03-16

申请号：US11224027

申请日：2005-09-13

Applicant: Tadashi Minakuchi

Inventor： Tadashi Minakuchi

IPC: H01J40/14 ,  H01J3/14 ,  G03G15/01

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

Abstract: A light scanning device capable of scanning a light beam on a photosensitive surface includes a light receiving system configured to receive the light beam and output a light receiving signal and a synchronizing signal generating system configured to generate a synchronizing signal with which light scanning is synchronized. The synchronizing signal generating system includes a first bias superimposing system configured to superimpose a first bias signal onto the light receiving signals to generate a first light receiving signal, a second bias superimposing system configured to superimpose a second bias signal with a different level from that of the first bias signal onto the light receiving signals to generate a second light receiving signal, a waveform shaping system configured to shape the waveform of the second light receiving signal, and a comparing system configured to compare the first light receiving signal with the second light receiving signal to output the synchronizing signal.

公开(公告)号：US20060001891A1

公开(公告)日：2006-01-05

申请号：US11168344

申请日：2005-06-29

Applicant: Yoshiki Yoshida

Inventor： Yoshiki Yoshida

IPC: G06F15/00

CPC classification number: H04N1/506 ,  H04N1/047 ,  H04N2201/0471 ,  H04N2201/04722 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04768 ,  H04N2201/04781 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: An image forming apparatus includes an image forming mechanism configured to perform an image processing operation for forming a plurality of elementary-color images, superposing the plurality of elementary-color images sequentially and accurately into a single color image on a transfer medium, and transferring the single color image onto a recording sheet. An error correction mechanism is configured to perform a plurality of different recording error corrections for correcting different recording errors in a main scanning direction and a sub scanning direction during a time interval between the image processing operations on the recording sheet and on a following recording sheet. And, a selector is configured to activate at least two of the plurality of different recording error corrections.

公开(公告)号：US20050248648A1

公开(公告)日：2005-11-10

申请号：US11114120

申请日：2005-04-26

Applicant: Shogo Suzuki

Inventor： Shogo Suzuki

IPC: B41J2/44 ,  B41J2/385 ,  G02B26/10 ,  G02B26/12 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC classification number: H04N1/053 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04715 ,  H04N2201/04732 ,  H04N2201/04739 ,  H04N2201/04744 ,  H04N2201/04767 ,  H04N2201/04793

Abstract: A scanning unit of an image-forming device has a polygon mirror for deflecting a laser beam across the surface of a photosensitive member. A disc that rotates together with the polygon mirror is provided with a reference mark. When the reference mark passes a photointerrupter, the photointerrupter detects the rotating position of the polygon mirror. A counter measures the number of pulses in a reference clock from the moment the photointerrupter detects the reference mark until a sensor provided in a measuring device detects the laser beam deflected by the polygon mirror, and the value of the counter is stored in memory as timing data. When the scanning unit is subsequently mounted in an image-forming device, the count value stored in memory is used to control the exposure timing for irradiating the photosensitive member in the image-forming device with the laser beam.

Abstract translation: 图像形成装置的扫描单元具有用于使激光束偏转在感光构件的表面上的多面镜。 与多面镜一起旋转的盘具有参考标记。 当参考标记通过光电断路器时，光电断路器检测多面镜的旋转位置。 一个计数器从光断路器检测到参考标记的时刻测量参考时钟脉冲数，直到测量装置中提供的传感器检测到由多面镜偏转的激光束，计数器的值作为定时存储在存储器中 数据。 当扫描单元随后安装在图像形成装置中时，存储在存储器中的计数值用于控制用激光束照射图像形成装置中的感光构件的曝光时间。

公开(公告)号：US20050243163A1

公开(公告)日：2005-11-03

申请号：US11102860

申请日：2005-04-11

Applicant: Dan Ozasa ,  Masaaki Ishida

Inventor： Dan Ozasa ,  Masaaki Ishida

IPC: B41J2/44 ,  B41J27/00 ,  G06F1/06 ,  H03L7/07 ,  H03L7/081 ,  H03L7/099 ,  H04N1/036 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191

CPC classification number: H03L7/07 ,  H03L7/0812 ,  H03L7/0995 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04794

Abstract: A pixel clock generation circuit is disclosed, including a high frequency clock generation unit configured to generate high frequency clock, a clock modulation data generation unit configured to generate clock modulation data based on pixel clock phase data indicating timing of a transition in pixel clock. The pixel clock generation circuit further includes a modulation clock generation unit configured to modulate the frequency and phase of the high frequency clock based on the modulation data thereby to generate modulated pixel clock.

Abstract translation: 公开了一种像素时钟生成电路，包括被配置为产生高频时钟的高频时钟生成单元，时钟调制数据生成单元，被配置为基于指示像素时钟中的转移的定时的像素时钟相位数据生成时钟调制数据。 像素时钟生成电路还包括：调制时钟生成单元，被配置为基于调制数据调制高频时钟的频率和相位，从而生成调制像素时钟。

公开(公告)号：US20050219354A1

公开(公告)日：2005-10-06

申请号：US11062671

申请日：2005-02-23

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

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

IPC: B41J2/44 ,  B41J2/435 ,  B41J2/47 ,  G02B26/10 ,  G02B26/12 ,  H04N1/036 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12

CPC classification number: G02B26/127 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A pixel clock generator that generates a pixel clock to regulate a drive timing of a scanning light source includes a data generating circuit that generates phase data based on a phase data pattern to correct an uneven scanning speed and fluctuation of scanning widths, and a pixel clock generating circuit generates a pixel clock having a long cycle based on a high-frequency clock and that performs a phase shift for the pixel clock based on the high-frequency clock. The phase pattern is set-such that difference in an amount of the phase shift between the pixel clocks adjacent to each other does not exceed a basic amount of the phase shift of the pixel clock generating circuit.

Abstract translation: 产生用于调节扫描光源的驱动定时的像素时钟的像素时钟发生器包括数据生成电路，其基于相位数据模式生成相位数据，以校正扫描速度不均匀和扫描宽度的波动，以及像素时钟 生成电路基于高频时钟生成具有长周期的像素时钟，并且基于高频时钟执行针对像素时钟的相移。 相位图案被设置为使得彼此相邻的像素时钟之间的相移量的差异不超过像素时钟产生电路的相移的基本量。