公开(公告)号：US20040223047A1

公开(公告)日：2004-11-11

申请号：US10831301

申请日：2004-04-26

Applicant: Hitachi Printing Solutions, Ltd.

Inventor： Yasuyuki Horie ,  Toru Kikuchi

IPC: B41J015/14 ,  B41J027/00

CPC classification number: G02B26/127 ,  G02B26/123 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1911 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04786 ,  H04N2201/04794

Abstract: A method of diagnosing a state of a horizontal synchronizing signal is provided for an optical scanner, which includes a rotary polygon mirror having a rotation sensor, a control clock competing with a signal of the rotation sensor to control the rotary polygon mirror to a constant speed, a laser beam illuminating the rotary polygon mirror to be used in a scanning operation, and a scanning beam detector detecting the laser scanning beam at a prescribed position and outputting a horizontal synchronizing signal to trigger a control of the scanner. The method includes using the optical scanner, and presetting an effective period of outputting the horizontal synchronizing signal by counting the control clock for the rotary polygon mirror, the counting being triggered by a previous horizontal synchronizing signal.

Abstract translation: 提供了一种用于诊断水平同步信号的状态的方法，用于光学扫描器，其包括具有旋转传感器的旋转多面镜，与旋转传感器的信号竞争的控制时钟，以将旋转多面镜控制到恒定速度 照射用于扫描操作的旋转多面镜的激光束和扫描光束检测器，其在预定位置检测激光扫描光束，并输出水平同步信号以触发扫描仪的控制。 该方法包括使用光学扫描器，并且通过对旋转多面镜的控制时钟进行计数来预设输出水平同步信号的有效时段，计数由先前的水平同步信号触发。

公开(公告)号：US20040179250A1

公开(公告)日：2004-09-16

申请号：US10798429

申请日：2004-03-12

Applicant: FUJI PHOTO FILM CO., LTD.

Inventor： Tatsuya Konagaya ,  Tsuyoshi Tanabe

IPC: G03B001/00 ,  H04N001/46

CPC classification number: H04N1/0473 ,  H04N2201/0408 ,  H04N2201/0471 ,  H04N2201/04715 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04737

Abstract: In order to reduce time required for inputting images of a film, an image reading apparatus comprising a first detecting section which detects starting positions of respective frame images of the film and positions of marks, a storing section which sets and stores, on the basis of the starting positions and the positions of the marks detected by the first detecting section, a position of a frame corresponding mark, which corresponds to the starting position, every each of the frame images, a second detecting section, provided at downstream side of the first detecting section, which detects the position of the frame corresponding mark every each of the frame images and an image reading section which reads each of the image frames in order of frame number thereof on the basis of the stored contents in the storing section and detection data detected by the second detecting section, is provided.

Abstract translation: 为了减少输入电影图像所需的时间，图像读取装置包括检测电影的各帧图像的起始位置的第一检测部和标记的位置的存储部，基于 由第一检测部检测出的标记的起始位置和位置，对应于起始位置的帧对应标记的位置，每个每个帧图像，设置在第一检测部分的下游侧的第二检测部分 检测部，其检测每个帧图像中的帧对应标记的位置;以及图像读取部，其基于存储部中存储的内容以及其帧号的顺序读取每个图像帧，并且检测数据 由第二检测部检测。

公开(公告)号：US20040130759A1

公开(公告)日：2004-07-08

申请号：US10705825

申请日：2003-11-13

Inventor： Ichitaro Kubota

IPC: H04N001/48 ,  H04N001/04 ,  H04N001/12

CPC classification number: H04N1/00588 ,  H04N1/0057 ,  H04N1/00602 ,  H04N1/00652 ,  H04N1/047 ,  H04N2201/0471 ,  H04N2201/04725 ,  H04N2201/04731 ,  H04N2201/04732

Abstract: An original feeding apparatus includes a sheet feeding tray for stacking an original; a feeding device for feeding the original stacked on the sheet feeding tray one at a time; a transport roller for receiving the original from the feeding means at a predetermined nipping position and transporting the original along an outer surface of the roller; a drive device for driving the transport roller; and a detection device for detecting that a predetermined fixed position on the outer surface of the transport roller matches the nipping position. The transport roller can be controlled such that the transport roller receives a leading edge of the original fed from the feeding means at the fixed position, i.e. an original transport starting position.

Abstract translation: 原稿进给装置包括用于堆叠原稿的供纸盘; 用于一次馈送堆叠在片材进给盘上的原件的进给装置; 传送辊，用于在预定的夹持位置从所述进给装置接收所述原件，并沿着所述辊的外表面传送所述原稿; 用于驱动输送辊的驱动装置; 以及检测装置，用于检测输送辊的外表面上的预定固定位置与夹持位置相匹配。 可以控制传送辊，使得传送辊在固定位置即原始传送开始位置处接收从进给装置馈送的原稿的前缘。

公开(公告)号：US06757088B2

公开(公告)日：2004-06-29

申请号：US10142172

申请日：2002-05-10

Applicant: Hyeong-Seog Shim

Inventor： Hyeong-Seog Shim

IPC: G02B2608

CPC classification number: H04N1/047 ,  B41J2/471 ,  G02B26/125 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04713 ,  H04N2201/04744

Abstract: A laser scanning unit disclosed in the present invention is intended to form an image on a photo-sensitive drum by generating laser beams in a facsimile unit, a copying machine and a printer using laser beams. The laser scanning unit includes a collimated lens reforming the laser beams emitted from a laser diode into parallel beams, a polygon mirror scanning by deflecting the above laser beams in constant velocity, a f-theta lens for adjusting a focus on a scanning plane by polarizing the laser beams to a main scanning direction and correcting an aberration, a reflecting surface attached with a reflecting film reflecting said laser beams into a horizontal direction, an optical sensor receiving the laser beams reflected from said reflecting film and a base plate for supporting said optical sensor and reflecting surface. According to the present invention, it is not needed an additional component such as the conventional plate spring and reflecting mirror, by using the reflecting film attached to the reflecting surface projected on a base plate instead of a horizontal synchronous mirror, in order to reflect the laser beams with the optical sensor. Accordingly, the present invention can reduce the fabrication cost of a product.

Abstract translation: 在本发明中公开的激光扫描单元旨在通过在传真单元，复印机和使用激光束的打印机中产生激光束来在感光鼓上形成图像。 激光扫描单元包括将从激光二极管发射的激光束重构为平行光束的准直透镜，通过以恒定速度偏转上述激光束的多面镜扫描，用于通过偏光调节扫描平面上的焦点的f-theta透镜 激光束到主扫描方向并校正像差，反射表面附接有反射所述激光束到水平方向的反射膜，接收从所述反射膜反射的激光束的光学传感器和用于支撑所述光学器件的基板 传感器和反射面。 根据本发明，通过使用安装在投影在基板上的反射面而不是水平同步反射镜的反射膜，不需要诸如常规板簧和反射镜的附加部件，以便反射 激光束与光学传感器。 因此，本发明可以降低产品的制造成本。

公开(公告)号：US20040085602A1

公开(公告)日：2004-05-06

申请号：US10694789

申请日：2003-10-29

Applicant: Canon Kabushiki Kaisha

Inventor： Hiroki Yoshida

IPC: G02B026/08

CPC classification number: H04N1/053 ,  G02B26/123 ,  G02B26/125 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04786

Abstract: Provided are a multi-beam scanning optical system capable of implementing high-quality printing in relatively simple structure and at high speed, and an image forming apparatus using it. The multi-beam scanning optical system has an incidence optical unit for guiding a plurality of beams emitted from a light source unit having a plurality of light-emitting regions spaced apart from each other in a main scanning direction, to a deflector; a scanning optical unit for focusing the plurality of beams deflected by the deflector, on a surface to be scanned; and a synchronism-detecting optical unit for converging part of the plurality of beams deflected by the deflector, via a return mirror on a slit surface by a lens section, thereafter guiding the beams to a synchronism detector, and controlling timing of a scan start position on the surface to be scanned, by use of a signal from the synchronism detector. The elements are set so as to satisfy Condition (A) where nullM is a defocus amount in a main scanning section of the beams guided to the synchronism detector and in a view from the slit surface and nullX is a defocus amount at each image height on the surface to be scanned.

Abstract translation: 提供能够以相对简单的结构和高速度实现高质量打印的多光束扫描光学系统以及使用它的图像形成装置。 多光束扫描光学系统具有入射光学单元，用于将从具有在主扫描方向上彼此间隔开的多个发光区域的光源单元发射的多个光束引导到偏转器; 扫描光学单元，用于将由偏转器偏转的多个光束聚焦在待扫描的表面上; 以及同步检测光学单元，用于将由偏转器偏转的多个光束的一部分经由透镜部分在狭缝表面上的返回镜聚焦，之后将光束引导到同步检测器，并且控制扫描开始位置的定时 在待扫描的表面上，通过使用来自同步检测器的信号。 这些元件被设定为满足条件（A），其中deltaM是被引导到同步检测器的光束的主扫描部分中的散焦量，并且在从狭缝表面的视角和deltaX是每个图像高度处的散焦量 要扫描的表面。

公开(公告)号：US20040056178A1

公开(公告)日：2004-03-25

申请号：US10669009

申请日：2003-09-24

Inventor： Yoshinobu Takeyama ,  Nobuyuki Yanagawa

IPC: H01L027/00

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04768 ,  H04N2201/04794

Abstract: A printer includes laser beam detecting sensors for detecting a laser beams at two positions in the main scanning direction. Write clock generating circuits measure a number of counts of a predetermined clock during a period since one of the laser beam detecting sensors detects each of the beams until another sensor detects the beam. A write clock frequency adjusting circuit takes the number of counts for one laser beam as a reference value and adjusts write clock frequencies of other laser beams so as to coincide with the reference value.

Abstract translation: 打印机包括用于在主扫描方向的两个位置处检测激光束的激光束检测传感器。 写入时钟发生电路在一段时间内测量预定时钟的数量，因为其中一个激光束检测传感器检测到每个光束直到另一个传感器检测到光束。 写入时钟频率调整电路以一个激光束的计数数作为基准值，调整其他激光束的写时钟频率，使其与基准值一致。

公开(公告)号：US20040047666A1

公开(公告)日：2004-03-11

申请号：US10637661

申请日：2003-08-11

Applicant: MINOLTA CO., LTD.

Inventor： Shoji Imaizumi ,  Yoshihiko Hirota ,  Hiroshi Sugiura ,  Toshio Tsuboi

IPC: B41J011/44

CPC classification number: G06T5/006 ,  H04N1/047 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/03162 ,  H04N2201/0471 ,  H04N2201/04717 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04787 ,  H04N2201/04789 ,  H04N2201/04791 ,  H04N2201/04793

Abstract: Image distortion is corrected in a color printer wherein print units for a plurality of colors are aligned to form a color image by superposing images formed by the print units. A quantity of image distortion is detected, and correction data of main scan address and subscan address are calculated and stored according to the detected image distortion for each main scan address. When input color image data are corrected, printing position is corrected in combination of address change with density interpolation. When the correction data exceeds the maximum correction range, the correction data are replaced by the maximum in the correction range to utilize the capability of the distortion correction of the printer. Further, in the image data correction, after the image data are converted to data having a smaller number of gradation levels, the data are delayed according to the serial arrangement of the print units. Then, the delayed data are converted again for printing.

Abstract translation: 在彩色打印机中校正图像失真，其中通过叠加由打印单元形成的图像来对准用于多种颜色的打印单元以形成彩色图像。 检测到一定数量的图像失真，根据检测到的每个主扫描地址的图像失真来计算并存储主扫描地址和副扫描地址的校正数据。 当输入彩色图像数据被校正时，打印位置与地址变化与密度插值的组合被校正。 当校正数据超过最大校正范围时，校正数据被替换为校正范围中的最大值，以利用打印机的失真校正的能力。 此外，在图像数据校正中，在将图像数据转换为具有较少灰度级数的数据之后，根据打印单元的串行排列来延迟数据。 然后，再次转换延迟数据进行打印。

公开(公告)号：US06680744B2

公开(公告)日：2004-01-20

申请号：US10096904

申请日：2002-03-14

Applicant: Sueo Ueno

Inventor： Sueo Ueno

IPC: B41J244

CPC classification number: B41J2/471 ,  H04N1/053 ,  H04N1/1135 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04794

Abstract: A laser scanner is adapted to cause a laser beam to scan in the main-scanning direction by deflecting the laser beam by means of a deflecting optical system. A horizontal synchronizing signal is obtained by detecting the laser beam by means of a photodetector. Forced emission of laser beam is started after a predetermined time period since the detection of the laser beam, which predetermined time period is variable as a function of the rotary speed of the deflector section. With this arrangement, a horizontal synchronizing signal can be reliably detected if the rotary speed of the deflecting operation system fluctuates.

Abstract translation: 激光扫描器适于使激光束通过偏转光学系统偏转激光束而在主扫描方向上扫描。 通过用光电检测器检测激光束来获得水平同步信号。 激光束的强制发射在从检测到激光束开始的预定时间段之后开始，该预定时间段作为偏转器部分的转速的函数而变化。 利用这种布置，如果偏转操作系统的旋转速度波动，则可以可靠地检测水平同步信号。

公开(公告)号：US06667820B2

公开(公告)日：2003-12-23

申请号：US10251794

申请日：2002-09-23

Applicant: Hiroki Yoshida

Inventor： Hiroki Yoshida

IPC: G02B2608

CPC classification number: H04N1/053 ,  G02B26/123 ,  G02B26/125 ,  H04N1/1135 ,  H04N1/1911 ,  H04N2201/0471 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04786

Abstract: Provided are a multi-beam scanning optical system capable of implementing high-quality printing in relatively simple structure and at high speed, and an image forming apparatus using it. The multi-beam scanning optical system has an incidence optical unit for guiding a plurality of beams emitted from a light source unit having a plurality of light-emitting regions spaced apart from each other in a main scanning direction, to a deflector; a scanning optical unit for focusing the plurality of beams deflected by the deflector, on a surface to be scanned; and a synchronism-detecting optical unit for converging part of the plurality of beams deflected by the deflector, via a return mirror on a slit surface by a lens section, thereafter guiding the beams to a synchronism detector, and controlling timing of a scan start position on the surface to be scanned, by use of a signal from the synchronism detector. The elements are set so as to satisfy Condition (A) where &dgr;M is a defocus amount in a main scanning section of the beams guided to the synchronism detector and in a view from the slit surface and &dgr;X is a defocus amount at each image height on the surface to be scanned.

公开(公告)号：US06646668B2

公开(公告)日：2003-11-11

申请号：US10171682

申请日：2002-06-17

Applicant: Koji Tanimoto ,  Kenichi Komiya ,  Jun Sakakibara ,  Koji Kawai

Inventor： Koji Tanimoto ,  Kenichi Komiya ,  Jun Sakakibara ,  Koji Kawai

IPC: B41J2455

CPC classification number: H04N1/233 ,  G03G2215/0119 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/2369 ,  H04N1/295 ,  H04N1/506 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04744 ,  H04N2201/33378

Abstract: An image forming apparatus maintains a constant beam scanning state so that light beams scan each drum always in the same state once a desired color overlapping accuracy is obtained by controlling color registration in color image formation. This mechanism achieves constantly fine color overlapping without forming a test pattern several times or consuming toner unnecessarily. A beam passage switch is provided in a laser scanning system. Sensors provided near each photosensitive drum determine whether each light beam has scanned a certain portion with no inclination or a certain scanning area, or whether each image magnification provides a desired size. Sensors for detecting scanning light beam obtains the center of light beam in accordance with information on a point at which the sensors start to respond and another point at which they cease responding, for performing several types of control based on the positional information, which provides correct information even though the size or power is different over several light beam.

Abstract translation: 图像形成装置保持恒定的光束扫描状态，使得一旦通过控制彩色图像形成中的颜色配准获得期望的颜色重叠精度，光束将始终处于相同的状态。 这种机制实现了不间断地形成测试图案多次或不必要地消耗调色剂的颜色重叠。 光束通过开关设置在激光扫描系统中。 设置在每个感光鼓附近的传感器确定每个光束是否扫描没有倾斜或某个扫描区域的某个部分，或者每个图像放大是否提供期望的尺寸。 用于检测扫描光束的传感器根据关于传感器开始响应的点的信息和其停止响应的另一个点获得光束中心，用于基于提供正确的位置信息执行几种类型的控制 即使尺寸或功率在几个光束上不同，信息也是如此。