公开(公告)号：US20020093566A1

公开(公告)日：2002-07-18

申请号：US09985753

申请日：2001-11-06

Inventor： Atsushi Kawamura

IPC: H04N003/08

CPC classification number: H04N9/3129 ,  G02B26/125 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/04774 ,  H04N2201/04798

Abstract: An optical scanning device includes a scanning optical system scans an image surface in a main scanning direction by focusing a deflected light beam onto the image surface as a beam spot, the scanning optical system providing an amount of linearity at an outer peripheral end of the image surface. An optical writing unit controls ON/OFF state of a light source in accordance with an image signal. A frequency dividing unit generates a secondary frequency of a pixel clock, which is equal to an initial frequency of the pixel clock divided by an integer. An electrical correction unit adjusts the secondary frequency of the pixel clock with respect to each of respective pixels included in the image signal, when the beam spot is located near the outer peripheral end of the image surface, so as to obtain uniform-velocity characteristics.

Abstract translation: 光学扫描装置包括扫描光学系统，通过将偏转的光束聚焦到图像表面上作为光束点来扫描主扫描方向上的图像表面，扫描光学系统在图像的外周端提供一定量的线性 表面。 光学写入单元根据图像信号控制光源的ON / OFF状态。 分频单元产生等于像素时钟的初始频率除以整数的像素时钟的次频。 当光斑位于图像外周端附近时，电校正单元相对于包括在图像信号中的各个像素中的每个像素调整像素时钟的次频，以获得均匀的速度特性。

公开(公告)号：US20020085241A1

公开(公告)日：2002-07-04

申请号：US10032185

申请日：2001-12-21

Applicant: Konica Corporation

Inventor： Kenji Izumiya ,  Hiroyuki Maruyama ,  Tadayuki Ueda ,  Ryuji Okutomi ,  Eiji Nishikawa ,  Satoshi Ogata ,  Shinobu Kishi

IPC: H04N001/36

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04774 ,  H04N2201/04784 ,  H04N2201/04798

Abstract: The invention concerns an image-forming apparatus employing a clock-generating circuit, which generates dot clock pulses utilized for an image-writing section of the image-forming apparatus. The clock-generating circuit includes a digital-delay dot clock adjusting section to generate first dot clock pulses having a predetermined number of pulses within a predetermined time interval at a constant exposing range of the image-writing section, wherein each period of the first dot clock pulses is slightly increased or reduced by changing a selection for a plurality of delayed clock pulses, which are generated by delaying clock-pulses, outputted from a reference oscillator, in slightly different delay times; and a jitter suppressing section to suppress a jitter component included in the first dot clock pulses, wherein the jitter suppressing section divides the first dot clock pulses to generate second dot clock pulses, and then, multiplies the second dot clock pulses to generate the dot clock pulses.

Abstract translation: 本发明涉及采用时钟发生电路的图像形成装置，其产生用于图像形成装置的图像写入部分的点时钟脉冲。 时钟发生电路包括数字延迟点时钟调整部分，用于在图像写入部分的恒定曝光范围内产生在预定时间间隔内具有预定数量的脉冲的第一点时钟脉冲，其中第一点的每个周期 通过在稍微不同的延迟时间内改变从参考振荡器输出的延迟时钟脉冲而产生的多个延迟时钟脉冲的选择来略微增加或减少时钟脉冲; 以及抖动抑制部，其抑制包含在第一点时钟脉冲中的抖动分量，其中，抖动抑制部分划分第一点时钟脉冲以产生第二点时钟脉冲，然后将第二点时钟脉冲相乘以产生点时钟 脉冲。

公开(公告)号：US06366307B1

公开(公告)日：2002-04-02

申请号：US09534803

申请日：2000-03-24

Applicant: Robert D. Morrison

Inventor： Robert D. Morrison

IPC: B41J2435

CPC classification number: H04N1/0446 ,  G06K15/1223 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/4056 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04781 ,  H04N2201/04798

Abstract: A system is provided for enabling a pulse width modulator to render video data for a laser at a frequency independent of the operating frequency of the pulse width modulator. The system includes phase measuring circuitry, edge output determining circuitry, edge location circuitry, and a summer. The phase measuring circuitry is operative to detect a phase offset on a scan line for a laser. The edge output determining circuitry is operative to determine which system clock cycle to output an edge on the system clock to act as if it were on a video clock. The edge location circuitry is operative to locate placement of an edge for a given pixel. The summer communicates with the phase measuring circuitry, the edge output determining circuitry, and the edge location circuitry. The summer is operative to combine values from the phase measuring circuitry, the edge output determining circuitry, and the edge location circuitry to generate a desired video signal. A method is also provided.

Abstract translation: 提供了一种用于使得脉冲宽度调制器能够以与脉冲宽度调制器的工作频率无关的频率来呈现激光器的视频数据的系统。 该系统包括相位测量电路，边缘输出确定电路，边缘位置电路和夏季。 相位测量电路用于检测用于激光的扫描线上的相位偏移。 边缘输出确定电路可操作以确定哪个系统时钟周期输出系统时钟上的边沿以如同在视频时钟上一样工作。 边缘位置电路用于定位给定像素的边缘的位置。 夏天与相位测量电路，边沿输出确定电路和边缘位置电路进行通信。 该夏季用于组合来自相位测量电路，边缘输出确定电路和边缘位置电路的值以产生期望的视频信号。 还提供了一种方法。

公开(公告)号：US06335752B1

公开(公告)日：2002-01-01

申请号：US08734319

申请日：1996-10-21

Applicant: John R. Andrews

Inventor： John R. Andrews

IPC: B41J2435

CPC classification number: H04N1/053 ,  G06K15/1223 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/04784 ,  H04N2201/04793 ,  H04N2201/04798

Abstract: Raster scanners, and printing machines which use raster scanners, that include compensation for the finite response times of their lasers and their laser drive signals on image edges. When an image pixel is not an image edge the laser driver is driven in synchronization with a master clock. However, if an image pixel is an edge of an image the laser driver is driven earlier than it would have been if it was driven in synchronization with the master clock. Beneficially, the drive to the laser driver is advanced such that the actual laser exposure curve crosses that of an ideal laser exposure curve such that the developed line edge is substantially ideal.

Abstract translation: 光栅扫描仪和使用光栅扫描仪的打印机，包括对其激光器的有限响应时间及其图像边缘上的激光驱动信号的补偿。 当图像像素不是图像边缘时，激光驱动器与主时钟同步地被驱动。 然而，如果图像像素是图像的边缘，则激光驱动器的驱动比如果它与主时钟同步地被驱动时将被驱动。 有利的是，激光驱动器的驱动是先进的，使得实际的激光曝光曲线与理想的激光曝光曲线交叉，使得显影的线边缘基本上是理想的。

公开(公告)号：US6163330A

公开(公告)日：2000-12-19

申请号：US140670

申请日：1998-08-26

Applicant: Takahiro Hideshima

Inventor： Takahiro Hideshima

IPC: B41J2/44 ,  B41J2/435 ,  G02B26/10 ,  H04N1/053 ,  H04N1/113 ,  H04N1/12 ,  H04N1/191

CPC classification number: H04N1/1912 ,  B41J2/435 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04734 ,  H04N2201/04746 ,  H04N2201/04768 ,  H04N2201/04798

Abstract: There is established a process of writing line data into and reading line data from line buffers when a film which is being fed in an auxiliary scanning direction is scanned in a main scanning direction in an interlaced scanning fashion with n recording beams that are emitted from an acoustooptic modulator based on simultaneously supplied n line data. It is assumed that the n line data transferred to channels CH1-CHn of the acoustooptic modulator have respective sequential numbers N (N=1-n). If the line data in a channel CHN exposed in a preceding scanning cycle is stored in any of the line buffers, then the line data of a sequential number N is written into that line buffer. If there is no line data in a channel CHN exposed in a preceding scanning cycle, then the line data of a sequential number N is written into a line buffer according to its sequence by referring to a write sequence table. The n line data are simultaneously read from the line buffers according to a read sequence table and transferred to the channels CH1-CHn of the acoustooptic modulator.

Abstract translation: 当沿着辅助扫描方向馈送的胶片以主扫描方向以隔行扫描方式扫描从n个记录光束发出的n个记录光束时，建立了将行数据写入行数据并从行缓冲器读取行数据的处理。 基于同时提供的n行数据的声光调制器。 假设传输到声光调制器的通道CH1-CHn的n行数据具有各自的顺序号N（N = 1-n）。 如果在前一扫描周期中暴露的通道CHN中的行数据存储在任何行缓冲器中，则将序列号N的行数据写入该行缓冲器。 如果在前一扫描周期中没有暴露在通道CHN中的行数据，则根据其顺序通过参考写序列表将顺序号N的行数据写入行缓冲器。 根据读序列表，从行缓冲器同时读取n行数据，并将其传送到声光调制器的通道CH1-CHn。

公开(公告)号：US5174205B1

公开(公告)日：1999-10-05

申请号：US63919991

申请日：1991-01-09

Applicant: PRESSTEK INC

Inventor： KLINE JOHN F ,  PENSAVECCHIA FRANK G ,  LAPONSEY STEPHEN M ,  WILLIAMS RICHARD A

IPC: B41C1/04 ,  B41C1/10 ,  B41J2/51 ,  B41J2/525 ,  H04N1/053 ,  H04N1/06 ,  H04N1/23 ,  H04N1/50 ,  B41N1/14

CPC classification number: B41C1/1033 ,  H04N1/053 ,  H04N1/06 ,  H04N1/50 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04724 ,  H04N2201/04734 ,  H04N2201/04772 ,  H04N2201/04793 ,  H04N2201/04798

Abstract: An apparatus and method for controlling discharge devices used to image a planographic printing plate are disclosed. Imaging information is stored in a first memory while discharge correction data is stored in a second memory. The correction data is used to vary the intervals between imaging discharges to compensate for error between the sensed position of the printing plate with respect to a writing head and the actual position. Printing artifacts are visually minimized by staggering the imaging devices used to produce separation plates.

公开(公告)号：US09365060B2

公开(公告)日：2016-06-14

申请号：US13015449

申请日：2011-01-27

Applicant: Yasuhiro Iwadate

Inventor： Yasuhiro Iwadate

IPC: G05D1/02 ,  B41J19/20 ,  H04N1/047 ,  H04N1/12 ,  H04N1/191

CPC classification number: B41J19/202 ,  B41J19/207 ,  H04N1/047 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04727 ,  H04N2201/04734 ,  H04N2201/04755 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: An apparatus includes a driven object, a motor configured to function as a driving source of the driven object, a scanning unit configured to cause the driven object to move, and include a first pulley to which the motor is connected, a second pulley disposed opposing to the first pulley, and a member stretched around the first pulley and the second pulley, an acquisition unit configured to acquire position information of the driven object, and a signal generation unit configured to generate a periodic signal for controlling driving of the motor based on the position information acquired by the acquisition unit, wherein the signal generation unit increases a period of the signal to be generated, as a length of the member to which a pulling force is applied becomes shorter.

Abstract translation: 一种装置，包括从动对象，被配置为用作驱动对象的驱动源的电动机，被构造成使被驱动体移动的扫描单元，并且包括与所述电动机连接的第一滑轮，与所述驱动对象相对配置的第二滑轮 第一滑轮和围绕第一滑轮和第二滑轮拉伸的构件，获取单元，被配置为获取被驱动对象的位置信息;以及信号生成单元，被配置为产生用于控制马达的驱动的周期信号，基于 由所述获取单元获取的位置信息，其中所述信号生成单元随着施加拉力的构件的长度变短而增加要生成的信号的周期。

公开(公告)号：US08659766B2

公开(公告)日：2014-02-25

申请号：US12955529

申请日：2010-11-29

Applicant: Yasuhiro Aoyama ,  Noriko Takeuchi

Inventor： Yasuhiro Aoyama ,  Noriko Takeuchi

IPC: G06F3/12 ,  H04N1/40 ,  H04N1/04 ,  G11C7/10

CPC classification number: H04N1/053 ,  H04N1/484 ,  H04N5/3577 ,  H04N5/3694 ,  H04N5/3765 ,  H04N2201/0094 ,  H04N2201/02443 ,  H04N2201/04768 ,  H04N2201/04774 ,  H04N2201/04798

Abstract: This invention is directed to image reading capable of suppressing EMI unwanted radiation while maintaining image quality. To accomplish this, the following processing is executed when reading an original image by a photoelectric transducer. More specifically, a first driving signal where SSCG spread modulation is applied, and a second driving signal where no SSCG spread modulation is applied are generated from a reference signal. Either the first or second driving signal is selected, and a timing signal for reading the original image is generated based on the selected driving signal. The image signal obtained by the photoelectric transducer is latched using the timing signal. The latched image signal is transferred for subsequent image processing. Upon reading a one-line image original, the second driving signal is selected till the completion of the latch operation, and after the latch operation, the first driving signal is selected for an image signal transfer operation.

Abstract translation: 本发明涉及能够在保持图像质量的同时抑制EMI不需要的辐射的图像读取。 为了实现这一点，当通过光电传感器读取原始图像时，执行以下处理。 更具体地，从参考信号产生施加SSCG扩展调制的第一驱动信号和不施加SSCG扩展调制的第二驱动信号。 选择第一或第二驱动信号，并且基于所选择的驱动信号产生用于读取原始图像的定时信号。 使用定时信号来锁存由光电变换器获得的图像信号。 被锁定的图像信号被传送用于随后的图像处理。 在读取单行图像原稿时，选择第二驱动信号直到锁存操作完成，并且在锁存操作之后，选择第一驱动信号进行图像信号传送操作。

公开(公告)号：US08314975B2

公开(公告)日：2012-11-20

申请号：US12563214

申请日：2009-09-21

Applicant: Tadashi Nakamura

Inventor： Tadashi Nakamura

IPC: H04N1/04

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04775 ,  H04N2201/04798

Abstract: A first main-scanning-position correction unit divides a surface to be scanned into first areas in a main scanning direction into areas, sets a separate clock-pulse timing for first area, and corrects a main-scanning position error. A second main-scanning-position correction unit divides the surface into second areas in the main scanning direction based on first-scanning-position correction data, sets a separate clock-pulse timing for each second area, and corrects the main-scanning position error.

Abstract translation: 第一主扫描位置校正单元将要扫描的表面沿主扫描方向划分成第一区域，设置第一区域的单独的时钟脉冲定时，并校正主扫描位置误差。 第二主扫描位置校正单元基于第一扫描位置校正数据将主表面划分成主扫描方向的第二区域，为每个第二区域设置单独的时钟脉冲定时，并校正主扫描位置误差 。

公开(公告)号：US20110242570A1

公开(公告)日：2011-10-06

申请号：US13072935

申请日：2011-03-28

Applicant: Hideto MIYANAGI

Inventor： Hideto MIYANAGI

IPC: H04N1/04 ,  G06F3/12

CPC classification number: H04N1/03 ,  G03G15/04036 ,  H04N1/0083 ,  H04N1/028 ,  H04N1/1013 ,  H04N2201/02402 ,  H04N2201/02443 ,  H04N2201/02447 ,  H04N2201/02456 ,  H04N2201/02458 ,  H04N2201/02474 ,  H04N2201/02485

Abstract: This image reading apparatus, includes: a first retaining member that retains a lens unit; a second retaining member that retains a sensor unit; and a positioning member that sets a relative position between the first retaining member and the second retaining member, wherein the positioning member comprises: a first concave portion that is sagged from a first contact surface to be in contact with the first retaining member; and a second concave portion that is sagged from a second contact surface to be in contact with the second retaining member, and the positioning member is fixed to the first retaining member and the second retaining member by an adhesive filled in the first concave portion and the second concave portion.

Abstract translation: 该图像读取装置包括：保持透镜单元的第一保持构件; 保持传感器单元的第二保持构件; 以及定位构件，其设定所述第一保持构件和所述第二保持构件之间的相对位置，其中所述定位构件包括：第一凹部，其从第一接触表面下垂以与所述第一保持构件接触; 以及第二凹部，其从第二接触面下垂而与第二保持部件接触，并且定位部件通过填充在第一凹部中的粘合剂固定在第一保持部件和第二保持部件上， 第二凹部。