公开(公告)号：US09424496B2

公开(公告)日：2016-08-23

申请号：US14676043

申请日：2015-04-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuzuru Yano

IPC: G06K15/14 ,  H04N1/00 ,  H04N1/29 ,  B41J2/435 ,  G03G15/043 ,  G06K15/02 ,  H04N1/23 ,  G06K15/12 ,  G03G15/00 ,  B41J29/393

CPC classification number: G06K15/027 ,  B41J2/435 ,  B41J2029/3935 ,  G03G15/043 ,  G03G15/5062 ,  G03G2215/00569 ,  G06K15/1204 ,  G06K15/14 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00034 ,  H04N1/00045 ,  H04N1/00082 ,  H04N1/00352 ,  H04N1/2346 ,  H04N1/29

Abstract: An image forming apparatus for easily setting a parameter for avoiding an occurrence of defective image by the sector deformation is provided. The image forming apparatus forms a test image. The test image having a first line drawing and a second line drawing, each of which is extending in a first direction, and the first line drawing and the second line drawing are provided at different positions in a second direction which is perpendicular to the first direction. Further, the image forming apparatus obtains the length information of the first and the second line drawings. Based on the length information of the first and the second line drawings, a correction condition is set. Then, the image forming apparatus corrects the image data based on the correction condition according to a position of the second direction.

Abstract translation: 提供一种图像形成装置，用于容易地设置用于避免由扇区变形引起的缺陷图像的发生的参数。 图像形成装置形成测试图像。 测试图像具有第一线条图和第二线条图，每条线条沿第一方向延伸，第一线条和第二线条画线在与第一方向垂直的第二方向上设置在不同位置 。 此外，图像形成装置获得第一和第二线条图的长度信息。 基于第一和第二线图的长度信息，设置校正条件。 然后，图像形成装置根据第二方向的位置根据校正条件来校正图像数据。

公开(公告)号：US07944463B2

公开(公告)日：2011-05-17

申请号：US12369613

申请日：2009-02-11

Applicant: Hiroshi Toyama ,  Yujiro Nomura ,  Ken Ikuma

Inventor： Hiroshi Toyama ,  Yujiro Nomura ,  Ken Ikuma

IPC: B41J15/14 ,  B41J27/00

CPC classification number: G03G15/0409 ,  G03G15/0435 ,  G03G15/50 ,  G03G2215/0404 ,  G06K15/1204 ,  H04N1/0414 ,  H04N1/0443 ,  H04N1/0455 ,  H04N1/1135 ,  H04N1/2369 ,  H04N2201/0466 ,  H04N2201/0468

Abstract: An image forming apparatus, includes: a latent image carrier whose surface includes an effective image region spanning across a predetermined width in a main scanning direction and is driven in a sub scanning direction approximately orthogonal to the main scanning direction; a latent image former which has a light source and a deflection mirror oscillating, and deflects a light beam from the light source using the deflection mirror so as to scan the effective image region with the deflected light beam; and a scanning mode controller which switches selectively between a single-side scanning mode and a double-side scanning mode, the single-side scanning mode being a mode in which the light beam is scanned only in a first direction included in the main scanning direction, the double-side scanning mode being a mode in which the light beam is scanned in both the first direction and a second direction opposite to the first direction, wherein a condition to form latent images on the latent image carrier in the single-side scanning mode is different from a condition to form latent images on the latent image carrier in the double-side scanning mode.

Abstract translation: 一种图像形成装置，包括：潜像载体，其表面包括横跨主扫描方向的预定宽度的有效图像区域，并且在与主扫描方向大致正交的副扫描方向上被驱动; 具有光源和偏转镜的振荡器，使用偏转镜使来自光源的光束偏转，以便用偏转的光束扫描有效图像区域; 以及扫描模式控制器，其在单面扫描模式和双面扫描模式之间选择性地切换，所述单面扫描模式是仅沿着包括在主扫描方向上的第一方向扫描光束的模式 ，双面扫描模式是在第一方向和与第一方向相反的第二方向上扫描光束的模式，其中在单侧扫描中在潜像载体上形成潜像的条件 模式不同于在双面扫描模式下在潜像载体上形成潜像的条件。

公开(公告)号：US07626606B2

公开(公告)日：2009-12-01

申请号：US12177097

申请日：2008-07-21

Applicant: Hiroshi Toyama ,  Yujiro Nomura ,  Ken Ikuma

Inventor： Hiroshi Toyama ,  Yujiro Nomura ,  Ken Ikuma

IPC: B41J2/435 ,  B41J15/14 ,  B41J27/00

CPC classification number: G03G15/0409 ,  G03G15/0435 ,  G03G15/50 ,  G03G2215/0404 ,  G06K15/1204 ,  H04N1/0414 ,  H04N1/0443 ,  H04N1/0455 ,  H04N1/1135 ,  H04N1/2369 ,  H04N2201/0466 ,  H04N2201/0468

Abstract: An image forming apparatus, includes: a latent image carrier whose surface includes an effective image region spanning across a predetermined width in a main scanning direction and is driven in a sub scanning direction approximately orthogonal to the main scanning direction; a latent image former which has a light source and a deflection mirror oscillating, and deflects a light beam from the light source using the deflection mirror so as to scan the effective image region with the deflected light beam; and a scanning mode controller which switches selectively between a single-side scanning mode and a double-side scanning mode, the single-side scanning mode being a mode in which the light beam is scanned only in a first direction included in the main scanning direction, the double-side scanning mode being a mode in which the light beam is scanned in both the first direction and a second direction opposite to the first direction, wherein a condition to form latent images on the latent image carrier in the single-side scanning mode is different from a condition to form latent images on the latent image carrier in the double-side scanning mode.

Abstract translation: 一种图像形成装置，包括：潜像载体，其表面包括横跨主扫描方向的预定宽度的有效图像区域，并且在与主扫描方向大致正交的副扫描方向上被驱动; 具有光源和偏转镜的振荡器，使用偏转镜使来自光源的光束偏转，以便用偏转的光束扫描有效图像区域; 以及扫描模式控制器，其在单面扫描模式和双面扫描模式之间选择性地切换，所述单面扫描模式是仅沿着包括在主扫描方向上的第一方向扫描光束的模式 ，双面扫描模式是在第一方向和与第一方向相反的第二方向上扫描光束的模式，其中在单侧扫描中在潜像载体上形成潜像的条件 模式不同于在双面扫描模式下在潜像载体上形成潜像的条件。

公开(公告)号：US07417661B2

公开(公告)日：2008-08-26

申请号：US11264146

申请日：2005-11-02

Applicant: Tasuku Sugimoto

Inventor： Tasuku Sugimoto

IPC: B41J15/14 ,  B41J27/00

CPC classification number: G06K15/1204 ,  B41J2/471 ,  G03G15/0435 ,  G03G15/50 ,  G03G2215/0404

Abstract: An image forming apparatus including: a speed information detection unit detecting speed information corresponding to a rotational speed of a scanner motor; a first judgment unit judging if the scanner motor has arrived at a first reference speed being lower than a rotational speed in scanning within a first term; a second judgment unit judging if the scanner motor has arrived at a second reference speed being not lower than the first reference speed after the first term, when the first judgment unit judges that the scanner motor has not arrived at the first reference speed within the first term; and an image formation unit initiating an image formation process when the first judgment unit judges that the scanner motor has arrived at the first reference speed within the first term and when the second judgment unit judges that the scanner motor has arrived at the second reference speed.

Abstract translation: 一种图像形成装置，包括：速度信息检测单元，检测与扫描仪电机的旋转速度相对应的速度信息; 第一判断单元，判断扫描电机是否在第一项内扫描中的第一基准速度低于第一基准速度; 第二判断单元，判断扫描器电动机是否已到达第二参考速度的第二参考速度，该第二参考速度不低于第一项之后的第一参考速度，当第一判断单元判断扫描器电动机在第一参考速度未到达第一参考速度时， 术语; 以及图像形成单元，当所述第一判断单元判断所述扫描仪电机在所述第一项内已经到达所述第一基准速度时，以及当所述第二判断单元判定所述扫描仪电机达到所述第二基准速度时，起动图像形成处理。

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：US20060132587A1

公开(公告)日：2006-06-22

申请号：US11016004

申请日：2004-12-16

Applicant: Douglas Keithley

Inventor： Douglas Keithley

IPC: B41J2/435 ,  G01D15/14

CPC classification number: B41J2/435 ,  B41J2/47 ,  G03G15/754 ,  G06K15/1204 ,  G06K2215/111 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0458

Abstract: A laser scanning assembly generates a laser beam and scans the laser beam through a plurality of scan lines to form desired dots. Each scan line is positioned to overlap an adjacent scan line and each dot includes a plurality of segments. The scanning assembly scans the laser beam through multiple scan lines to fully discharge each segment of each dot. The laser scanner assembly would typically be part of a laser printer.

公开(公告)号：US06526074B1

公开(公告)日：2003-02-25

申请号：US09627302

申请日：2000-07-27

Applicant: Hyeong-Seog Shim

Inventor： Hyeong-Seog Shim

IPC: H01S310

CPC classification number: G02B26/10 ,  G06K15/1204

Abstract: A laser scanning apparatus comprises a light source, a deflecting unit, a rotating guide, a drive motor and an image forming lens. The light source emits laser beams. The deflecting unit deflects the laser beams emitted by the light source into a scanning direction. The rotating guide has a plurality of guide holes for scanning the laser beams at a constant velocity, the rotating guide accommodating the deflecting unit and being positioned so that the light source lies on central axis of the rotating guide. The drive motor rotates the rotating guide while engaged with it, and the image forming lens focuses the laser beams passing through the guide holes of the rotating guide onto a surface.

Abstract translation: 激光扫描装置包括光源，偏转单元，旋转引导件，驱动电机和成像透镜。 光源发射激光束。 偏转单元将由光源发射的激光束偏转到扫描方向。 旋转引导件具有用于以恒定速度扫描激光束的多个引导孔，所述旋转引导件容纳偏转单元并且定位成使得光源位于旋转引导件的中心轴线上。 驱动电动机在旋转引导件与其接合的同时旋转，并且成像透镜将通过旋转引导件的引导孔的激光束聚焦到表面上。

公开(公告)号：US5751333A

公开(公告)日：1998-05-12

申请号：US558618

申请日：1995-11-14

Applicant: Robert H. Melino

Inventor： Robert H. Melino

IPC: B41J2/44 ,  B41J2/47 ,  G02B26/12 ,  G03G15/04 ,  G03G15/043 ,  G06K15/12 ,  H04N1/113 ,  G01D15/14 ,  H01S3/00 ,  B41J4/435

CPC classification number: B41J2/471 ,  G02B26/127 ,  G06K15/1204

Abstract: The present invention discloses a dynamic control of a drive circuit to a diode laser used in a raster output scanning system. In the prior art, the binary serial stream input to a diode laser operates on the laser to pulse the laser on when a "one" input is applied, the laser staying on when the first one input is immediately followed by successive one inputs. The first on pixel creates an exposure at an image plane which is less than uniform due to the characteristics of the drive circuit due to the overshoot or undershoot characteristics of the drive circuit. The second and succeeding pixels following the first pixel turned on will be at a maximum exposure value and hence will have an undesirable exposure contrast with the first pixel. The present invention adds delay circuitry to the drive circuits of the diode laser to introduce a gating signal which delays the application of the pixel stream to the laser diode in such a way that each successive on pulse is cycled on and off therefore each exposure value of each on pixel is exactly the same. Additional circuitry is included to compensate for the loss of exposure by increasing the laser diode output.

Abstract translation: 本发明公开了光栅输出扫描系统中使用的二极管激光器的驱动电路的动态控制。 在现有技术中，输入到二极管激光器的二进制串行数据流在激光器上工作，当施加“一个”输入时，激光器接通脉冲，当第一个输入紧随其后的是连续的一个输入时，激光器保持接通。 第一个像素由于驱动电路的过冲或下冲特性而由于驱动电路的特性而在图像平面上产生小于均匀的曝光。 第一个像素之后的第二个和后续像素接通将处于最大曝光值，因此与第一像素具有不希望的曝光对比度。 本发明将延迟电路添加到二极管激光器的驱动电路，以引入门控信号，该门控信号将像素流的应用延迟到激光二极管，使得每个连续的导通脉冲循环开启和关闭，因此每个曝光值 每个像素都完全相同。 包括额外的电路，通过增加激光二极管输出来补偿曝光损失。

公开(公告)号：US5548320A

公开(公告)日：1996-08-20

申请号：US125585

申请日：1993-09-23

Applicant: Toshihisa Yamanaka ,  Eiji Okabayashi

Inventor： Toshihisa Yamanaka ,  Eiji Okabayashi

IPC: B41J2/44 ,  G06K15/12 ,  H01S5/042 ,  H04N1/40 ,  H04N1/23

CPC classification number: H04N1/40037 ,  G06K15/1204 ,  G06K2215/0085

Abstract: In the printing apparatus wherein the laser diode is used as light source for writing images on an image carrier, a control transistor is serially connected to the laser diode. The magnitude of the drive current for driving the laser diode is adjusted in accordance with the magnitude of the base current of the control transistor. The base current of the control transistor is turned on when the main power supply is implemented. That is, the control transistor is pre-heated up to print command. Consequently, the drive current is stable from the initial image formation after the main power supply is turned on.

Abstract translation: 在将激光二极管用作在图像载体上写入图像的光源的打印装置中，控制晶体管串联连接到激光二极管。 用于驱动激光二极管的驱动电流的大小根据控制晶体管的基极电流的大小来调节。 当实现主电源时，控制晶体管的基极电流导通。 也就是说，控制晶体管被预热到打印命令。 因此，在主电源接通之后，驱动电流从初始图像形成稳定。

公开(公告)号：US5495316A

公开(公告)日：1996-02-27

申请号：US154529

申请日：1993-11-19

Applicant: Kiyoshi Muto

Inventor： Kiyoshi Muto

IPC: B41J2/44 ,  B41J2/435 ,  G03G15/00 ,  G03G15/02 ,  G03G15/32 ,  G03G21/14 ,  G06K15/12 ,  H04N1/29 ,  G03G21/00

CPC classification number: G03G15/50 ,  B41J2/435 ,  G03G15/326 ,  G06K15/1204 ,  H04N1/295 ,  G03G15/043

Abstract: An electrophotographic apparatus includes a control device for controlling a charger to start a high voltage supply operation so that a scanner unit and a photosensitive drum are simultaneously allowed to carry out a normal exposure operation and a normal photosensitizing operation, respectively. Through this control of the high voltage supply, a first print time can be shortened.

Abstract translation: 电子照相设备包括控制装置，用于控制充电器开始高电压供应操作，使得扫描仪单元和感光鼓分别同时被允许执行正常曝光操作和正常光敏化操作。 通过高压电源的控制，可以缩短第一次打印时间。