公开(公告)号：US20090009582A1

公开(公告)日：2009-01-08

申请号：US12230716

申请日：2008-09-04

Applicant: Mitsuo Shiraishi

Inventor： Mitsuo Shiraishi

IPC: B41J2/435

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04774 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A frequency modulation apparatus capable of reducing a peak level of a radiation noise of a characteristic frequency band due to an image clock.This frequency modulation apparatus is used in an image formation apparatus having an image bearing body to be scanned by a laser beam, and comprises an auxiliary clock calculating portion for calculating an auxiliary clock period based on a reference clock period and a modulation coefficient, and an image clock generating portion for generating the image clock in which a frequency is different at least in one portion and other portions of an image area on a main scan line to be scanned by the laser beam on said image bearing body based on the initial period value set in advance and said auxiliary clock period, and said image clock generating means perform a frequency modulation so that the frequency of said image clock changes within a predetermined fluctuation.

Abstract translation: 一种能够降低由于图像时钟引起的特征频带的辐射噪声的峰值电平的频率调制装置。 该频率调制装置用于具有要由激光束扫描的图像承载体的图像形成装置，并且包括：辅助时钟计算部分，用于基于参考时钟周期和调制系数计算辅助时钟周期;以及 图像时钟产生部分，用于基于初始周期值，生成图像时钟，其中至少在一个部分中的频率不同，并且主扫描线上的图像区域的其他部分被激光束扫描在所述图像承载体上 所述图像时钟发生装置执行频率调制，使得所述图像时钟的频率在预定的波动内变化。

公开(公告)号：US07471411B2

公开(公告)日：2008-12-30

申请号：US10692268

申请日：2003-10-23

Applicant: Kouichi Takaki

Inventor： Kouichi Takaki

IPC: G06K15/00 ,  B41J2/205

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04768 ,  H04N2201/04774 ,  H04N2201/04798

Abstract: This invention is directed to an image printing apparatus which can print images without any halfway offset or obverse/reverse pixel offset at a low cost. An image printing apparatus includes a clock generating section which generates a dot clock as the basis of each pixel forming an image, an image printing section which prints a one-line image in a main scanning direction in accordance with image data with reference to the dot clock output from the clock generating section, and prints a one-page image by repeating in the sub-scanning direction one-line image printing performed in the main scanning direction, and a clock control section which changeably controls the frequency of the dot clock during scanning of one line in the main scanning direction.

Abstract translation: 本发明涉及一种图像打印设备，其可以以低成本打印图像而没有任何中途偏移或正面/反向像素偏移。 一种图像打印设备包括：时钟产生部分，其生成点时钟作为形成图像的每个像素的基础，图像打印部分，根据图像数据参照点来在主扫描方向上打印单行图像 从时钟产生部分输出的时钟，并且通过在副扫描方向上重复在主扫描方向上执行的一行图像打印来打印单页图像，以及时钟控制部分，其可变地控制点时钟频率 在主扫描方向扫描一行。

公开(公告)号：US07460159B2

公开(公告)日：2008-12-02

申请号：US11083158

申请日：2005-03-18

Applicant: Hisakazu Ohkawara ,  Hidenori Akamatsu

Inventor： Hisakazu Ohkawara ,  Hidenori Akamatsu

IPC: H04N5/228

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04772 ,  H04N2201/04786

Abstract: Magnification correction of an image is performed by changing the cycle time of an optional pixel in the unit of pixel, until a phase adjustment amount (phase shift value) calculated by fixing the frequency exceeds a preset specified value, and after the phase adjustment amount exceeds the preset specified value, magnification correction of the image is performed by changing the frequency of an image signal in the unit of a line or in the unit of a plurality of lines. Accordingly, the number of execution of the magnification correction of an image by the latter method, in which it is necessary to suspend the image forming operation at the time of execution thereof, can be reduced.

Abstract translation: 通过改变以像素为单位的可选像素的周期时间来进行图像的放大校正，直到通过固定频率计算的相位调整量（相移值）超过预设的规定值，并且在相位调整量超过 通过以线或单位为单位改变图像信号的频率来执行预设的指定值，图像的倍率校正。 因此，可以减少在执行时需要暂停图像形成操作的后一种方法执行图像的放大率校正的次数。

公开(公告)号：US20080258382A1

公开(公告)日：2008-10-23

申请号：US11737439

申请日：2007-04-19

Applicant: Joannes N.M. deJong ,  Lloyd A. Williams

Inventor： Joannes N.M. deJong ,  Lloyd A. Williams

IPC: B65H7/02 ,  G01P21/00

CPC classification number: B65H9/002 ,  B65H2511/514 ,  B65H2513/10 ,  B65H2553/51 ,  B65H2557/23 ,  B65H2701/1311 ,  G03G15/6564 ,  G03G15/6567 ,  H04N1/00002 ,  H04N1/00018 ,  H04N1/00087 ,  H04N1/00705 ,  H04N1/00745 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/0471 ,  H04N2201/04713 ,  H04N2201/04724 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04737 ,  B65H2220/01 ,  B65H2220/03

Abstract: A system and method are provided to calibrate a sheet velocity measurement derived from a drive nip system incorporating idler encoders. Testing has found that the velocity from an idler encoder system is subject to systematic errors, for example, errors that occur when the system is running media of different thicknesses. The system uses one or more nips with encoders mounted on the idlers and a number of point sensors that are spaced apart in the process direction. The point sensors are used to measure the transmit time of the sheet (lead edge or trail edge) between two sensor positions. The transit time is used to calculate the average sheet velocity. The average sheet velocity is compared with the velocity derived from the idler encoders to derive a correction factor. The velocity sensor are used to calibrate the idler-encoder velocity sensors, providing a worthwhile improvement to idler-encoder technology for media handling (e.g., feeding, transport, and finishing) in direct marking systems.

Abstract translation: 提供了一种系统和方法来校准从包含惰轮编码器的驱动压区系统导出的纸张速度测量。 测试发现，空载编码器系统的速度受到系统误差的影响，例如系统运行不同厚度的介质时发生的错误。 该系统使用一个或多个带有安装在惰轮上的编码器和沿过程方向间隔开的多个点传感器。 点传感器用于测量两个传感器位置之间的纸张（前缘或尾迹）的传输时间。 通行时间用于计算平均纸张速度。 将平均纸张速度与来自惰轮编码器的速度进行比较，以得到校正因子。 速度传感器用于校准惰轮编码器速度传感器，为直接标记系统中的介质处理（例如进给，运输和精加工）的惰轮编码器技术提供了有价值的改进。

公开(公告)号：US07433074B2

公开(公告)日：2008-10-07

申请号：US10815306

申请日：2004-04-01

Applicant: Shin-ichi Takata

Inventor： Shin-ichi Takata

IPC: H04N1/40

CPC classification number: H04N1/053 ,  G02B26/127 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04748 ,  H04N2201/04767 ,  H04N2201/04794

Abstract: An image forming apparatus that is capable of scanning at a proper speed at all positions on a main scan line without being affected by variations in the characteristics of a f-θ lens, variations in the laser beam wavelength, irregularities in the rotational speed of a polygon mirror and fluctuations in the characteristics of the f-θ lens due to changes in ambient temperature. An image clock signal for exposure control is generated for each of a plurality of segments obtained by dividing a main scan line on a photosensitive drum scanned by a laser beam, based on a modulation coefficient. The modulation coefficient is corrected based on the detected phase difference between detection timing of the terminating end of the main scan line and generation timing of the last image clock signal for the last segment.

Abstract translation: 一种图像形成装置，其能够在主扫描线上的所有位置以适当的速度扫描，而不受f-θ透镜的特性变化的影响，激光束波长的变化， 多角镜和由于环境温度变化引起的f-theta透镜特性的波动。 基于调制系数，通过对由激光束扫描的感光鼓上的主扫描线进行分割而获得的多个片段中的每一个产生用于曝光控制的图像时钟信号。 基于检测到的主扫描线的终端的检测定时与最后一段的最后的图像时钟信号的产生定时之间的相位差来校正调制系数。

公开(公告)号：US07428093B2

公开(公告)日：2008-09-23

申请号：US11492544

申请日：2006-07-24

Applicant: Clarence T. Tegreene ,  David L. Dickensheets

Inventor： Clarence T. Tegreene ,  David L. Dickensheets

IPC: G02B26/00

CPC classification number: G09G3/02 ,  G02B26/10 ,  G02B26/101 ,  G02B27/0031 ,  G02B27/01 ,  G02B27/0101 ,  G02B2027/011 ,  G02B2027/014 ,  H04N1/047 ,  H04N2201/0471 ,  H04N2201/04744 ,  H04N2201/0476

Abstract: A scanning system device has a predetermined aberration as it scans or switches light along selected optical paths. A deformable membrane receives the light and introduces an inverse “aberration” that offsets that of the scanning system. In one embodiment the scanning system includes a torsion arm that supports an oscillatory body. The torsion arm and/or body can be machined from metal, micromachined in silicon or formed in a variety of other ways. Alternatively, the scanning system may include a rotating polygonal scanner or other type of optical scanner. In another approach, an optical switch replaces the scanner.

Abstract translation: 扫描系统装置在沿着所选光路扫描或切换光时具有预定的像差。 可变形膜接收光并引入抵消扫描系统的“像差”。 在一个实施例中，扫描系统包括支撑振荡体的扭转臂。 扭转臂和/或主体可以由金属加工，微加工成硅或以各种其他方式形成。 或者，扫描系统可以包括旋转多边形扫描仪或其他类型的光学扫描仪。 在另一种方法中，光学开关代替扫描仪。

公开(公告)号：US07391003B2

公开(公告)日：2008-06-24

申请号：US11401213

申请日：2006-04-10

Applicant: Yujiro Nomura ,  Akihiro Gomi ,  Ken Ikuma

Inventor： Yujiro Nomura ,  Akihiro Gomi ,  Ken Ikuma

IPC: H01L27/00

CPC classification number: G03G15/326 ,  G02B26/105 ,  G03G15/0435 ,  G03G2215/0132 ,  G03G2215/0148 ,  G03G2215/0404 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04798

Abstract: An image forming apparatus includes a latent image forming unit in which a light beam scans in a second scan region wider than a first scan region. The light beam is modulated in accordance with an image signal within the range of the first scan region for every scanning cycle and guided onto the effective image region to form a line latent image. A write timing adjuster adjusts a write start position for writing a latent image along the main scanning direction, based on a time difference between a first detection signal output when a first light beam scanning away from the effective image region moves passed an optical sensor, and a second detection signal output when a second light beam scanning toward the effective image region moves passed the optical sensor.

Abstract translation: 图像形成装置包括潜像形成单元，其中光束在比第一扫描区域宽的第二扫描区域中扫描。 根据在每个扫描周期的第一扫描区域的范围内的图像信号对光束进行调制，并被引导到有效图像区域上以形成线潜像。 写入定时调整器基于当远离有效图像区域扫描的第一光束扫描通过光学传感器时输出的第一检测信号和第二检测信号之间的时间差与沿着主扫描方向写入潜像的时间差调整写入开始位置，以及 当朝向有效图像区域扫描的第二光束移动通过光学传感器时输出的第二检测信号。

公开(公告)号：US07369148B2

公开(公告)日：2008-05-06

申请号：US10795336

申请日：2004-03-09

Applicant: Mitsuo Shiraishi

Inventor： Mitsuo Shiraishi

IPC: B41J2/435 ,  B41J2/47

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04774 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: A frequency modulation apparatus capable of reducing a peak level of a radiation noise of a characteristic frequency band due to an image clock. This frequency modulation apparatus is used in an image formation apparatus having an image bearing body to be scanned by a laser beam. An auxiliary clock calculating portion calculates an auxiliary clock period based on a reference clock period and a modulation coefficient, and an image clock generating portion generates the image clock in which a frequency is different at least in one portion and other portions of an image area on a main scan line to be scanned by the laser beam on the image bearing body based on the initial period value set in advance and the auxiliary clock period, and the image clock generating portion performs a frequency modulation so that the frequency of the image clock changes within a predetermined fluctuation.

Abstract translation: 一种能够降低由于图像时钟引起的特征频带的辐射噪声的峰值电平的频率调制装置。 该频率调制装置用于具有要被激光束扫描的图像承载体的图像形成装置中。 辅助时钟计算部分基于参考时钟周期和调制系数来计算辅助时钟周期，并且图像时钟产生部分至少在图像区域的一部分和其他部分中生成频率不同的图像时钟 基于预先设定的初始周期值和辅助时钟周期的激光束在图像承载体上扫描的主扫描线，并且图像时钟产生部分执行频率调制，使得图像时钟的频率改变 在预定的波动范围内。

公开(公告)号：US07365764B2

公开(公告)日：2008-04-29

申请号：US11285066

申请日：2005-11-23

Applicant: Kazumi Kimura

Inventor： Kazumi Kimura

IPC: B41J2/435 ,  B41J2/47

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.

Abstract translation: 扫描光学装置包括能够被调制的光源，用于偏转和扫描从光源发射的光束的偏转元件，用于将被偏转的光束成像为扫描表面上的光斑形状的扫描光学元件，以及光学元件 用于将偏转光束从偏转元件引导到传感器以进行图像写入的定时开始的同步检测。 扫描光学装置还包括扫描位置检测装置，用于使用于同步检测的光学元件的光轴和来自偏转元件的光束的主光线用于使图像写入的定时开始彼此一致，并且检测 在具有与扫描光学元件的光轴分开的至少一个图像高度的点处的光束的位置。

公开(公告)号：US07362477B2

公开(公告)日：2008-04-22

申请号：US10445023

申请日：2003-05-27

Applicant: Yoshiro Ishikawa ,  Hirotaka Chiba ,  Tsugio Noda

Inventor： Yoshiro Ishikawa ,  Hirotaka Chiba ,  Tsugio Noda

IPC: H04N1/04

CPC classification number: H04N1/00541 ,  H04N1/00204 ,  H04N1/00538 ,  H04N1/00681 ,  H04N1/00687 ,  H04N1/00734 ,  H04N1/00782 ,  H04N1/107 ,  H04N2201/0051 ,  H04N2201/0471 ,  H04N2201/04725 ,  H04N2201/04731

Abstract: An image reader, detachably attached to an electronic apparatus, for functionally expanding the electronic apparatus and for reading an image on a medium, includes an interface connectible to and disconnectible from the electronic apparatus a housing having an image-reading surface that faces the medium, a medium detecting part, provided on the image-reading surface, for detecting the medium, and an image reading part, provided on the image-reading surface and driven based on a detection result by the medium detecting part, for reading the image on the medium.

Abstract translation: 一种用于功能扩展电子设备并用于在介质上读取图像的可拆卸地附接到电子设备的图像读取器包括可与电子设备连接并可与其分离的接口，具有面向介质的图像读取表面的壳体， 设置在图像读取表面上用于检测介质的介质检测部分和设置在图像读取表面上的图像读取部分，并且基于介质检测部分的检测结果被驱动，用于读取图像上的图像 中。