公开(公告)号：US20080225304A1

公开(公告)日：2008-09-18

申请号：US12073884

申请日：2008-03-11

Applicant: Yoshinobu Sakaue ,  Noboru Kusunose ,  Hideto Higaki

Inventor： Yoshinobu Sakaue ,  Noboru Kusunose ,  Hideto Higaki

IPC: G01B11/14

CPC classification number: H04N1/1135 ,  G03G15/0435 ,  G03G2215/0404 ,  H04N1/0473 ,  H04N1/12 ,  H04N2201/0082 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: An optical scanning unit includes first and second light beam generators, a deflector, a beam detector, and an optical element. The first and second light beam generators respectively emit a first and second light beam. The deflector deflects the first and second light beams in a main scanning direction and to scan a surface of first and second photosensitive members using the first and second light beams respectively. The beam detector detects both of the first and second light beams deflected by the deflector. The beam detector detects a light beam position of the first and second light beams in a sub-scanning direction. The optical element is disposed along an optical path for the first and second light beams starting from the first and second light beam generators to the deflector to set a light incoming angle striking the deflector same for the first and second light beams.

Abstract translation: 光学扫描单元包括第一和第二光束发生器，偏转器，光束检测器和光学元件。 第一和第二光束发生器分别发射第一和第二光束。 偏转器在主扫描方向上偏转第一和第二光束并且分别使用第一和第二光束扫描第一和第二光敏元件的表面。 光束检测器检测由偏转器偏转的第一和第二光束。 光束检测器检测第一和第二光束在副扫描方向上的光束位置。 光学元件沿着从第一和第二光束发生器到偏转器的第一和第二光束的光路设置，以将与第一和第二光束相同的光入射角设置成相同的偏转器。

公开(公告)号：US07417777B2

公开(公告)日：2008-08-26

申请号：US11844643

申请日：2007-08-24

Applicant: Kenichiroh Saisho ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Daisuke Ichii

Inventor： Kenichiroh Saisho ,  Yoshinori Hayashi ,  Takeshi Ueda ,  Kohji Sakai ,  Daisuke Ichii

IPC: G02B26/08

CPC classification number: G02B26/124 ,  G02B5/1876 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: A coupling lens arranged on an optical path of an optical beam from a VCSEL, which has a refraction plane and a diffraction plane that respectively change a power according to a temperature change and suppresses a beam-waist position change in a main-scanning direction and a sub-scanning directions on the scanning surface caused by the temperature change, by a wavelength change of the optical beam caused by power changes of the refraction plane and the diffraction plane and the temperature change. A deflecting unit deflects the optical beam that passed through the coupling lens. A scanning optical system condenses a deflected optical beam on the scanning surface.

Abstract translation: 耦合透镜，布置在来自VCSEL的光束的光路上，所述光束具有根据温度变化分别改变功率的折射面和衍射面，并抑制主扫描方向上的束腰位置变化， 通过由折射平面和衍射面的功率变化引起的光束的波长变化和温度变化，由温度变化引起的扫描表面上的副扫描方向。 偏转单元使通过耦合透镜的光束偏转。 扫描光学系统将偏转的光束冷凝在扫描表面上。

公开(公告)号：US07391542B2

公开(公告)日：2008-06-24

申请号：US10851158

申请日：2004-05-24

Applicant: Ken Tanimura ,  Hidekazu Shimomura

Inventor： Ken Tanimura ,  Hidekazu Shimomura

IPC: H04N1/04

CPC classification number: H04N1/506 ,  H04N1/12 ,  H04N1/1912 ,  H04N2201/04703 ,  H04N2201/04731 ,  H04N2201/04744 ,  H04N2201/04755 ,  H04N2201/04794 ,  H04N2201/04796

Abstract: Disclosed in an optical scanning apparatus which includes a deflecting unit comprised of a rotary polygon mirror for deflecting a light beam radiated from a light source unit, and a scanning optical system for guiding the light beam deflected by the deflecting unit to a surface to be scanned. In the optical scanning apparatus, individual elements are set such that a diameter of a circumscribed circle of the rotary polygon mirror, the number of deflecting facets of the rotary polygon mirror, an incident angle of the light beam on the deflecting facet at the time when the light beam scans a scanning center, a maximum swing angle of the deflecting facet at the time when an effective scanning range is scanned, and a magnification of the scanning optical system in a sub scanning section can satisfy a predetermined condition, thereby reducing an unevenness of pitches due to a deflecting-facet fall of the rotary polygon mirror, and readily achieving a highly precise and fine image.

Abstract translation: 公开了一种光学扫描装置，其包括偏转单元，该偏转单元包括用于偏转从光源单元辐射的光束的旋转多面镜，以及用于将由偏转单元偏转的光束引导到待扫描表面的扫描光学系统 。 在光学扫描装置中，各个元件被设定为使得旋转多面镜的外接圆的直径，旋转多面镜的偏转面的数量，偏转面上的光束的入射角 光束扫描扫描中心，扫描有效扫描范围时的偏转小面的最大摆动角度，并且副扫描部分中的扫描光学系统的倍率可以满足预定条件，从而减小不平坦度 由于旋转多面镜的偏转小面下降而产生的间距，并且容易实现高精度和精细的图像。

公开(公告)号：US20080144122A1

公开(公告)日：2008-06-19

申请号：US11953921

申请日：2007-12-11

Applicant: Hidefumi Yoshida

Inventor： Hidefumi Yoshida

IPC: H04N1/047

CPC classification number: H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/40 ,  H04N2201/02443 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04787 ,  H04N2201/04798

Abstract: A memory read control unit (606) reads out image data of one pixel from a memory (603) in synchronism with a clock signal. On the basis of the image data of one pixel, a converting unit (604) converts the density of a corresponding pixel into digital data of a plurality of bits and stores the digital data in a shift register (606). A pixel-piece insertion and deletion control unit (607) inserts data of one bit into the shift register or deletes data of one bit from the shift register. The pixel-piece insertion and deletion control unit (607) estimates a data storing state in the shift register and controls image data read-out from the memory (603) in accordance with the estimated data storing state.

Abstract translation: 存储器读取控制单元（606）与时钟信号同步地从存储器（603）读出一个像素的图像数据。 基于一个像素的图像数据，转换单元（604）将相应像素的浓度转换为多个位的数字数据，并将数字数据存储在移位寄存器（606）中。 像素片插入和删除控制单元（607）将一位的数据插入移位寄存器或从移位寄存器中删除一位的数据。 像素片插入和删除控制单元（607）估计移位寄存器中的数据存储状态，并且根据估计数据存储状态控制从存储器（603）读出的图像数据。

公开(公告)号：US20080117280A1

公开(公告)日：2008-05-22

申请号：US11601330

申请日：2006-11-16

Applicant: Martin Pepe

Inventor： Martin Pepe

IPC: B41J2/435

CPC classification number: H04N1/047 ,  H04N2201/0471 ,  H04N2201/04712 ,  H04N2201/04729 ,  H04N2201/04731 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744

Abstract: A technique for achieving a smart start of scan (SOS) detector that is related with line scan timing on raster output scanners by expanding the available functions to include beam size and position. A start of scan detection system adapted to provide beam size and position control. The system includes a CPU, a data source and laser driver managed by the CPU, and a multiple element pre-patterned detector managed by the CPU and enabling a sensor pattern through which laser beams from the laser driver are passed and detected. According to a method for managing beam size and position in a image processing system, a multiple element pre-patterned detector adapted to enable a sensor pattern is provided wherein at least one laser beam is passed through said sensor pattern enabled by the multiple element pre-patterned detector, analyzed and used by the image processing system to adjust beam size and position.

Abstract translation: 一种通过扩展可用功能以包括光束尺寸和位置，实现与光栅输出扫描仪上的行扫描时序相关的扫描智能启动（SOS）检测器的技术。 适用于提供光束尺寸和位置控制的扫描检测系统的开始。 该系统包括由CPU管理的CPU，数据源和激光驱动器以及由CPU管理的多元件预先图案化检测器，并且能够传递和检测来自激光驱动器的激光束的传感器图案。 根据用于管理图像处理系统中的光束大小和位置的方法，提供了适于实现传感器图案的多元素预图案化检测器，其中使至少一个激光束穿过由多个元件预定义的激活的所述传感器图案， 图案检测器，由图像处理系统分析和使用，以调整光束尺寸和位置。

公开(公告)号：US20080088889A1

公开(公告)日：2008-04-17

申请号：US11850568

申请日：2007-09-05

Applicant: Mitsuo Suzuki

Inventor： Mitsuo Suzuki

IPC: H04N1/04

CPC classification number: H04N1/0473 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/02439 ,  H04N2201/0471 ,  H04N2201/04732 ,  H04N2201/04744 ,  H04N2201/04749 ,  H04N2201/04765 ,  H04N2201/04794

Abstract: A light scanning device includes a semiconductor laser which emits a laser beam in response to an image forming signal, an optical deflector which scans the laser beam emitted from the semiconductor laser in a main scanning direction, and a liquid crystal deflecting element which changes the scanning position of the laser beam emitted from the semiconductor laser while desynchronized with output of the image forming signal, thereby to correct the scanning position of the laser beam in a sub-scanning direction.

Abstract translation: 光扫描装置包括响应于图像形成信号发射激光束的半导体激光器，在主扫描方向扫描从半导体激光器发射的激光束的光偏转器和改变扫描的液晶偏转元件 在与图像形成信号的输出同步的同时从半导体激光器发射的激光束的位置，从而校正激光束在副扫描方向上的扫描位置。

公开(公告)号：US20080049096A1

公开(公告)日：2008-02-28

申请号：US11509432

申请日：2006-08-23

Applicant: David J. Mickan ,  Eric W. Westerfield ,  Daniel E. Pawley

Inventor： David J. Mickan ,  Eric W. Westerfield ,  Daniel E. Pawley

IPC: B41J2/435

CPC classification number: B41J2/471 ,  G06K15/1219 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N2201/0471 ,  H04N2201/04713 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: In an electrophotographic (EP) device, methods and apparatus include determining a delay of one or more sensors (hsync) to accurately know when to start the process of scanning latent images. In one aspect, the sensor includes a leading and trailing edge defined along a direction of laser beam scan travel. Determining the delay includes learning a position of a laser beam on the sensor at a time when a controller connected to the sensor receives a signal from the sensor indicating the sensor is being sufficiently impinged upon by the laser beam. It also includes learning a latest possible position of the laser beam along the direction of laser scan travel where the laser beam can be turned on and still have the sensor assert a signal indicating it has been sufficiently impinged upon by the laser beam. Bi-directionally scanning EP devices are also disclosed, including controllers, photoconductors, sensors, etc.

Abstract translation: 在电子照相（EP）装置中，方法和装置包括确定一个或多个传感器（hsync）的延迟，以准确地知道何时开始扫描潜像的处理。 在一个方面，传感器包括沿着激光束扫描行进方向限定的前缘和后缘。 确定延迟包括在连接到传感器的控制器接收到来自传感器的指示传感器被激光束充分照射的信号时，在传感器上学习激光束的位置。 它还包括沿着激光扫描行程的方向学习激光束的最新可能位置，激光束可以被打开并且仍然具有传感器断言表示其被激光束充分地照射的信号。 还公开了双向扫描EP装置，包括控制器，感光体，传感器等

公开(公告)号：US20080036848A1

公开(公告)日：2008-02-14

申请号：US11878808

申请日：2007-07-27

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：US20070297024A1

公开(公告)日：2007-12-27

申请号：US11588297

申请日：2006-10-27

Applicant: Hyung-soo Kim

Inventor： Hyung-soo Kim

IPC: H04N1/04

CPC classification number: G02B26/125 ,  G02B26/127 ,  H04N1/1135 ,  H04N2201/0471 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04744

Abstract: Provided are a light scanning unit and an electrophotographic image forming apparatus including the light scanning unit. The light scanning unit includes a light source, a polygonal mirror deflecting light emitted from the light source in a main scanning direction, an imaging lens transmitting the deflected light to a photoconductor for forming an image, and a synchronization detecting unit detecting a synchronization signal from the deflected light for synchronization in the main scanning direction. The light scanning unit has a total scanning rate, including a synchronization detecting optical path, ranging from about 60% to 75%.

Abstract translation: 提供了一种光扫描单元和包括该光扫描单元的电子照相图像形成设备。 光扫描单元包括光源，在主扫描方向上偏转从光源发射的光的多面镜，将偏转光传输到用于形成图像的光电导体的成像透镜，以及同步检测单元，用于检测来自 用于在主扫描方向上同步的偏转光。 光扫描单元具有约60％至75％的总扫描速率，包括同步检测光路。

公开(公告)号：US07224378B2

公开(公告)日：2007-05-29

申请号：US10762265

申请日：2004-01-23

Applicant: Katsuhiko Maeda

Inventor： Katsuhiko Maeda

IPC: B41J2/45 ,  B41J2/47

CPC classification number: G03G15/0178 ,  G02B26/122 ,  G02B26/127 ,  G03G15/011 ,  G03G15/0173 ,  G03G15/0194 ,  G03G2215/0119 ,  G03G2215/0161 ,  H04N1/053 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/506 ,  H04N2201/04713 ,  H04N2201/04722 ,  H04N2201/04729 ,  H04N2201/04732 ,  H04N2201/04734 ,  H04N2201/04744 ,  H04N2201/04772 ,  H04N2201/04774 ,  H04N2201/04775 ,  H04N2201/04777 ,  H04N2201/04781 ,  H04N2201/04789 ,  H04N2201/04793 ,  H04N2201/04794 ,  H04N2201/04798

Abstract: An optical recording apparatus includes a light source, a scanner, and a phase shift controller. The light source emits a light beam controlled to be lit on and off in synchronism with a pixel clock signal according to input image data. The scanner reforms the light beam emitted by the light source into a cyclic scanning light beam scanning in a main scanning direction a photosensitive surface moving in a sub-scanning direction. The phase shift controller performs an image magnification correction by a phase change for changing a phase of the pixel clock signal in units of one nth of a cycle of the pixel clock signal at one or more positions on the photoconductive surface in the main scanning direction, in which n is an integer greater than one. A method and apparatus of optical image forming is also described.

Abstract translation: 光记录装置包括光源，扫描器和相移控制器。 根据输入图像数据，光源与像素时钟信号同步地发射被控制为点亮和熄灭的光束。 扫描器将由光源发射的光束重新形成沿主扫描方向扫描沿沿副扫描方向移动的感光表面的循环扫描光束。 相移控制器通过在主扫描方向上的光电导表面上的一个或多个位置处以像素时钟信号的第n个周期为单位改变像素时钟信号的相位的相位变化进行图像倍率校正， 其中n是大于1的整数。 还描述了光学成像的方法和装置。