公开(公告)号：US06570598B1

公开(公告)日：2003-05-27

申请号：US10121199

申请日：2002-04-12

Applicant: Gregory Lawrence Ream ,  David Anthony Schneider

Inventor： Gregory Lawrence Ream ,  David Anthony Schneider

IPC: G03G1501

CPC classification number: H04N1/047 ,  B41J2/471 ,  G03G2215/0119 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/03108 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04756 ,  H04N2201/04786 ,  H04N2201/04789 ,  H04N2201/04791

Abstract: An electrophotographic image forming apparatus has defined therein a longitudinal or process direction, and includes plural photoconductive drums, each having an image forming surface. Multiple printhead units are provided for generating image information bearing laser beams. Each printhead unit includes optics for scanning the laser beam to form a plurality of scan lines extending across the corresponding photoconductive drum in a transverse scan direction which traverses the process direction. Registration of a scan line from one printhead with a corresponding scan line from another printhead in the process direction is achieved by adjusting the time required to translate one of the scan lines from a location where it is electrostatically formed to a location where it is transferred to an image receiving medium. Adjustment of the translation time may be achieved by modifying the rotational speed of the associated drum. Printhead optics may include rotatable polygonal prisms having plane reflective surfaces which are started in a random phase relationship. Control of the drum rotational speeds is also effective to achieve a predetermined apparent scanning phase relationship among the prisms.

Abstract translation: 电子照相图像形成装置在其中限定了纵向或加工方向，并且包括多个感光鼓，每个具有图像形成表面。 提供多个打印头单元用于产生承载激光束的图像信息。 每个打印头单元包括用于扫描激光束以形成跨过对应的感光鼓的横扫扫描方向的多条扫描线的光学器件。 通过调整将扫描线从静电形成的位置转移到其被转移到的位置所需的时间来实现在扫描线从一个打印头与来自另一打印头的处理方向上的相应扫描线的对准 图像接收介质。 可以通过修改关联的滚筒的转速来实现平移时间的调节。 打印头光学元件可以包括具有以随机相位关系启动的平面反射表面的可旋转多边形棱镜。 鼓旋转速度的控制对于实现棱镜之间的预定的视在扫描相位关系也是有效的。

公开(公告)号：US20020101502A1

公开(公告)日：2002-08-01

申请号：US10094974

申请日：2002-03-12

Applicant: FUJI PHOTO FILM CO., LTD.

Inventor： Atsushi Suganuma

IPC: B41J002/435 ,  B41J002/47

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：US06307579B1

公开(公告)日：2001-10-23

申请号：US09519587

申请日：2000-03-06

Applicant: Akihiko Kida

Inventor： Akihiko Kida

IPC: B41J2385

CPC classification number: H04N1/00013 ,  G02B26/122 ,  H04N1/00015 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/047 ,  H04N1/1017 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02416 ,  H04N2201/03108 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793

Abstract: A first polygonal motor correction value and a first drum motor correction value are provided to the polygonal motor and the photosensitive drum motor so that an image formed by a printer unit has a 100% magnification on the basis of data provided from a reference pattern generating unit which generates an ideal pattern data having no magnification error. Next, a document, on which a predetermined pattern is printed, is scanned by a scanner unit, and then, a second polygonal motor correction value and a carriage motor correction value are provided to the polygonal motor and the carriage motor so that an image printed using the printer unit has a 100% magnification. In the case of forming an image by the printer unit in a state that a main scanning/feed direction of the scanned image is inverted, an image is formed using the first polygonal motor correction value, the carriage motor correction value and a second drum motor correction value calculated from the first and second polygonal motor correction values and the first drum motor correction value.

Abstract translation: 第一多边形电动机校正值和第一鼓电动机校正值被提供​​给多边形电动机和感光鼓电动机，使得由打印机单元形成的图像基于从参考图案生成单元提供的数据具有100％的放大倍率 其产生没有放大误差的理想图案数据。 接下来，通过扫描器单元扫描其上印有预定图案的文档，然后向多边形马达和滑架马达提供第二多边形马达校正值和托架马达校正值，使得打印的图像 使用打印机单元放大100％。 在扫描图像的主扫描/馈送方向反转的状态下，通过打印机单元形成图像的情况下，使用第一多边形电动机校正值，滑架电动机校正值和第二鼓电动机形成图像 由第一和第二多边形电动机校正值和第一鼓电动机校正值计算的校正值。

公开(公告)号：US20010012135A1

公开(公告)日：2001-08-09

申请号：US09773584

申请日：2001-02-02

Applicant: ASAHI KOGAKU KOGYO KABUSHIKI KAISHA

Inventor： Yuichi Kurosawa

IPC: H04N001/04

CPC classification number: H04N1/0414 ,  H04N1/0402 ,  H04N1/0443 ,  H04N1/0455 ,  H04N1/10 ,  H04N1/1008 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/02416 ,  H04N2201/03108 ,  H04N2201/0408 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04791

Abstract: A film scanner performs a main-scan of a film by an imaging device and performs a sub-scan of the imaging device so as to enable scanning at any resolution using a simple configuration. The scanning mechanism, for the sub-scan of the film with respect to the imaging device, has a transport table for supporting the film held by a film holder and transporting it in a sub-scan direction and a transport mechanism for moving the transport table in the sub-scan direction. The source of the drive power of the transport mechanism is a scan motor (stepper motor) driven by a pulse signal output from a motor drive circuit. The motor drive circuit is configured to enable micro-stepping of the scan motor.

Abstract translation: 胶片扫描仪通过成像装置执行胶片的主扫描并执行成像装置的副扫描，以便能够以任何分辨率使用简单的配置进行扫描。 用于相对于成像装置的薄膜副扫描的扫描机构具有用于支撑由胶片保持器保持并且沿副扫描方向传送的胶片的传送台和用于移动传送台的传送机构 在副扫描方向。 传送机构的驱动力的来源是由从电动机驱动电路输出的脉冲信号驱动的扫描电动机（步进电动机）。 电动机驱动电路构成为能够进行扫描电动机的微步进。

公开(公告)号：US08384752B2

公开(公告)日：2013-02-26

申请号：US12076200

申请日：2008-03-14

Applicant: Yasumasa Tomita

Inventor： Yasumasa Tomita

IPC: B41J2/435

CPC classification number: B41J2/473 ,  G02B26/125 ,  G02B26/127 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/03108 ,  H04N2201/04755 ,  H04N2201/04756

Abstract: An optical scanning unit used in an image forming apparatus having a latent image carrier includes a light emitter, a rotary deflector, an inclination adjustment unit, and a controller. The light emitter emits a light beam. The rotary deflector deflects and scans the light beam onto a surface of the latent image carrier. The inclination adjustment unit adjusts an inclination of a scan line corresponding to the light beam relative to a reference scan line on the latent image carrier. The controller changes at least one of a linear velocity of the latent image carrier and a rotation speed of the rotary deflector so as to change a ratio between the linear velocity of the latent image carrier and a scan speed of the light beam, and controls the inclination adjustment unit based on the ratio to keep the scan line from inclining relative to the reference scan line.

Abstract translation: 在具有潜像载体的图像形成装置中使用的光学扫描单元包括光发射器，旋转偏转器，倾斜调节单元和控制器。 光发射器发射光束。 旋转偏转器将光束偏转并扫描到潜像载体的表面上。 倾斜调整单元相对于潜像载体上的基准扫描线调整与光束对应的扫描线的倾斜度。 控制器改变潜像载体的线速度和旋转偏转器的旋转速度中的至少一个，以便改变潜像载体的线速度和光束的扫描速度之间的比率，并且控制 倾斜调整单元，其基于比例，以使扫描线相对于参考扫描线倾斜。

公开(公告)号：US20110242620A1

公开(公告)日：2011-10-06

申请号：US13053472

申请日：2011-03-22

Applicant: Keisuke YAMAMOTO

Inventor： Keisuke YAMAMOTO

IPC: H04N1/04

CPC classification number: H04N1/0473 ,  H04N1/00814 ,  H04N1/1013 ,  H04N1/12 ,  H04N1/193 ,  H04N1/32609 ,  H04N1/3263 ,  H04N1/32667 ,  H04N2201/0081 ,  H04N2201/02416 ,  H04N2201/03108 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04791

Abstract: The image reading apparatus conveys a reading unit or a document to read the document. Conveyance is implemented by motor control based on a target position trajectory. The reading unit reads the document each time a line start signal is inputted. When a predetermined condition is satisfied, the reading operation is invalidated. A conveyance position at a timing to start the first reading operation invalidated is specified as an interrupted position. The object is arranged at a conveyance restart position moved back from the interrupted position. A target position trajectory is newly set. A conveyance time from the conveyance restart position to the interrupted position defined by the target position trajectory is an integral multiple of an output cycle of the line start signal. The motor control based on the target position trajectory is started at a timing coinciding with an output timing of the line start signal.

Abstract translation: 图像读取装置传送读取单元或文档以读取文档。 运输通过基于目标位置轨迹的电机控制实现。 读取单元每当输入行开始信号时读取文档。 当满足预定条件时，读取操作无效。 在开始无效的第一读取操作的定时的输送位置被指定为中断位置。 物体布置在从中断位置移回的输送重启位置。 新设定目标位置轨迹。 从输送重启位置到由目标位置轨迹限定的中断位置的传送时间是行开始信号的输出周期的整数倍。 基于目标位置轨迹的电动机控制在与线路起始信号的输出定时一致的定时开始。

公开(公告)号：US07391525B2

公开(公告)日：2008-06-24

申请号：US10389576

申请日：2003-03-14

Applicant: Alexander L. Chapman ,  David G. King ,  Patrick L. Kroger ,  Michael A. Marra, III ,  Randall D. Mayo ,  Barry B. Stout

Inventor： Alexander L. Chapman ,  David G. King ,  Patrick L. Kroger ,  Michael A. Marra, III ,  Randall D. Mayo ,  Barry B. Stout

IPC: B41J11/46 ,  B41J11/55 ,  B41J11/42 ,  B41J11/36 ,  B41J11/00

CPC classification number: H04N1/128 ,  B41J11/46 ,  H04N1/0473 ,  H04N1/12 ,  H04N2201/02416 ,  H04N2201/02439 ,  H04N2201/03108 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04725 ,  H04N2201/04734 ,  H04N2201/04755 ,  H04N2201/04756 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793 ,  H04N2201/04794

Abstract: Methods and systems for calibrating media indexing errors in a printing device are provided. In one embodiment, the method comprises feeding a calibration media through a printing device, sensing the position of the media as it moves through the printing device, sensing positions of a media indexing component as the media moves through the printing device, determining media indexing position errors based upon the sensed positions, and calculating a compensation factor to be applied based upon the errors. In some embodiments, parameters of a line and/or other function are determined from the error data and the parameters are utilized to calculate a compensation factor. Moreover, in some embodiments, it is determined what range the data fits within, and a predetermined compensation factor is determined based upon the range.

Abstract translation: 提供了用于校准印刷装置中的介质分度误差的方法和系统。 在一个实施例中，该方法包括通过打印装置馈送校准介质，当介质移动通过打印装置时感测介质的位置，当介质移动通过打印装置时检测介质索引部件的位置，确定介质索引位置 基于感测到的位置的误差，以及基于误差计算要应用的补偿因子。 在一些实施例中，从误差数据确定线和/或其他功能的参数，并且使用参数来计算补偿因子。 此外，在一些实施例中，确定数据适合的范围，并且基于该范围确定预定的补偿因子。

公开(公告)号：US06972876B2

公开(公告)日：2005-12-06

申请号：US09964577

申请日：2001-09-28

Applicant: Atsushi Yokochi

Inventor： Atsushi Yokochi

IPC: H04N1/04 ,  H04N1/047 ,  H04N1/10 ,  H04N1/107 ,  H04N1/21 ,  H04N1/36 ,  G05B19/40 ,  H02P8/00

CPC classification number: H04N1/047 ,  H04N2201/03108 ,  H04N2201/04725 ,  H04N2201/04731 ,  H04N2201/04734 ,  H04N2201/04756 ,  H04N2201/04786 ,  H04N2201/04791

Abstract: The invention provides an image reading apparatus that produces a precise image of an original document to prevent the read image from having distortion or irregular density, by driving a DC motor, which drives an image reading unit in a scanning direction, at a constant speed suitable for a document to be read. In addition, the image reading apparatus prevents position errors or misalignment at the start of the image reading, or at a restart of the image reading after the image reading is paused. A speed control circuit provides feedback to a DC motor to synchronize a time interval detected by a pulse interval detecting circuit with a time interval set by an interval setting register, so that the DC motor is operated at a constant speed. A counter counts the number of signals output from an encoder. After the speed of the DC motor is stabilized, a timing of signals output from a CCD drive unit to the image reading unit is synchronized with a timing of the signals generated by the encoder. As a count in the counter reaches a predetermined number, an actual image reading is started. Thus, the position errors or misalignment are prevented in the produced image.

Abstract translation: 本发明提供了一种图像读取装置，通过以恒定的速度驱动沿扫描方向驱动图像读取单元的DC马达，产生原始文件的精确图像以防止读取图像具有失真或不规则的浓度 要阅读的文件。 此外，图像读取装置防止在图像读取开始时的位置错误或未对准，或者在图像读取暂停之后重新启动图像读取。 速度控制电路向DC电动机提供反馈以使由脉冲间隔检测电路检测的时间间隔与由间隔设置寄存器设置的时间间隔同步，使得DC电动机以恒定速度运行。 计数器对从编码器输出的信号数进行计数。 在DC电机的速度稳定后，从CCD驱动单元输出到图像读取单元的信号的定时与由编码器产生的信号的定时同步。 当计数器中的计数达到预定数量时，开始实际的图像读取。 因此，在产生的图像中防止位置误差或未对准。

公开(公告)号：US06962288B2

公开(公告)日：2005-11-08

申请号：US10625664

申请日：2003-07-24

Applicant: Yoshito Haba

Inventor： Yoshito Haba

IPC: G06T1/60 ,  H04N1/00 ,  H04N1/04 ,  G06K7/10

CPC classification number: H04N1/00241 ,  H04N1/00236 ,  H04N1/3263 ,  H04N1/32683 ,  H04N2201/0015 ,  H04N2201/02439 ,  H04N2201/03108 ,  H04N2201/04756 ,  H04N2201/04791 ,  H04N2201/04794 ,  H04N2201/329

Abstract: An image reading apparatus prevents degradation of image quality and a delay in the image reading time which are caused by interruption of reading of image data. A speed at which a host computer reads image data from an image reading apparatus and temporarily stores it therein is examined. If the resulting speed is lower than a reference value which has been set so that an operation to avoid an overflow of a buffer RAM in the image reading apparatus may not be caused, the sub-scanning speed of the image reading apparatus is set lower, and the image is read at the lower speed.

Abstract translation: 图像读取装置防止由图像数据的读取中断引起的图像质量的劣化和图像读取时间的延迟。 检查主计算机从图像读取装置读取图像数据并暂时存储在其中的速度。 如果所得到的速度低于已被设置为使得可能不会引起避免图像读取装置中的缓冲RAM溢出的操作的参考值，则将图像读取装置的副扫描速度设置得较低， 并以较低的速度读取图像。

公开(公告)号：US20040036847A1

公开(公告)日：2004-02-26

申请号：US10646594

申请日：2003-08-22

Applicant: Xerox Corporation

Inventor： Brian R. Conrow ,  David M. Kerxhalli

IPC: G03B027/32 ,  G03B027/52

CPC classification number: H04N1/4095 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00082 ,  H04N1/00092 ,  H04N1/047 ,  H04N1/12 ,  H04N2201/03108 ,  H04N2201/04717 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04756 ,  H04N2201/04768 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793

Abstract: The relationship between first and second side images is evaluated to determine how the position of the paper and/or the size and arrangement of an image can be manipulated to compensate for paper shrinkage caused by fusing. Show through is reduced by performing setup to adjust a pixel clock frequency and/or a photoreceptor speed, determining a residual magnification error, determining margin shifts to compensate for the residual magnification error, and applying the margin shifts. Paper shrink effects on registration can be compensated for using determinations made during a typical printer setup. Show through errors can be reduced without using a paper conditioner to pre-shrink or re-wet the paper. In simplex and duplex printing, the show through errors worsen as the image moves away from the registration edge. Using information obtained during setup, a margin shift is determined that results in a significant reduction in the maximum show through for each image.

Abstract translation: 评估第一和第二侧面图像之间的关系，以确定如何操纵纸张的位置和/或图像的尺寸和布置以补偿由熔融引起的纸张收缩。 通过执行设置来调整像素时钟频率和/或感光体速度，确定剩余倍率误差，确定边缘偏移以补偿残余放大误差并应用边缘偏移来减少显示。 可以通过在典型打印机设置期间进行的确定来补偿注册时的纸张收缩效果。 无需使用纸张调节器对纸张进行预收缩或再湿润即可显示错误。 在单面和双面打印中，当图像从注册边缘移开时，显示错误会恶化。 使用在设置期间获得的信息，确定了导致每个图像的最大显示的显着减少的边距偏移。