公开(公告)号：US20120189328A1

公开(公告)日：2012-07-26

申请号：US13354789

申请日：2012-01-20

申请人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

发明人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

IPC分类号： G03G15/04

CPC分类号： G03G15/043 ,  G03G15/0189 ,  G03G15/5058

摘要： Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.

摘要翻译： 根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。 处理装置产生用于校正光源输出的校正数据，以根据检测结果抑制密度变化。 处理装置修正校正数据，使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出，表面上的位置之间的关系 的主扫描方向上的感光元件和校正后的输出，并且修正校正数据，使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出 超过最大额定输出。

公开(公告)号：US08648892B2

公开(公告)日：2014-02-11

申请号：US13354789

申请日：2012-01-20

申请人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

发明人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

IPC分类号： B41J2/435 ,  G03G15/04

CPC分类号： G03G15/043 ,  G03G15/0189 ,  G03G15/5058

摘要： Apparatus that forms an image according to image information includes density sensors that detect image density variations in main and sub-scanning directions. A processing device generates correction data for correcting a light source output to suppress the density variations based on detection results. The processing device modifies the correction data such that the light source output after the correction is at least a minimum rated output at a position at which the output after the correction is lower than the minimum rated output, in the relation between a position on the surface of the photosensitive element in the main-scanning direction and the output after the correction, and modifies the correction data such that the light source output after the correction is at most a maximum rated output at a position at which the output after the correction is higher than the maximum rated output.

摘要翻译： 根据图像信息形成图像的装置包括检测主扫描方向和副扫描方向上的图像浓度变化的密度传感器。 处理装置产生用于校正光源输出的校正数据，以根据检测结果抑制密度变化。 处理装置修正校正数据，使得校正后的光源输出在校正后的输出低于最小额定输出的位置处至少为最小额定输出，表面上的位置之间的关系 的主扫描方向上的感光元件和校正后的输出，并且修正校正数据，使得校正后的光源输出在校正后的输出更高的位置处于最大额定输出 超过最大额定输出。

公开(公告)号：US08654168B2

公开(公告)日：2014-02-18

申请号：US13556500

申请日：2012-07-24

申请人： Kazuhiro Akatsu ,  Seizo Suzuki ,  Masaaki Ishida

发明人： Kazuhiro Akatsu ,  Seizo Suzuki ,  Masaaki Ishida

IPC分类号： B41J15/14 ,  B41J27/00

CPC分类号： G02B26/127 ,  B41J2/455 ,  B41J2/473

摘要： An optical scanning device including a light source having multiple light emitters; an optical element to reflect and transmit the emitted light beams; a photodetector to receive the reflected light beams; an aperture having an opening to shape the transmitted light beams; a light deflector to deflect the transmitted light beams; and a scanning optics to guide the deflected light beams to a scanning surface. The quantity of each of the light beams received by the photodetector is not less than 0.01 mW, and the size of a light receiving surface of the photodetector is determined such that even when the full width at half maximum of the emitted light beams changes, the rate of change of the ratio of the quantity of the light beams detected by the photodetector to the quantity of the light beams passing through the opening of the aperture is not greater than 4%.

摘要翻译： 一种光学扫描装置，包括具有多个发光体的光源; 用于反射和透射发射的光束的光学元件; 用于接收反射光束的光电检测器; 具有用于使透射光束成形的开口的孔; 光偏转器，用于偏转透射光束; 以及用于将偏转的光束引导到扫描表面的扫描光学器件。 由光电检测器接收的每个光束的量不小于0.01mW，并且确定光电检测器的光接收表面的尺寸，使得即使当发射光束的最大半峰全部变化时， 由光检测器检测的光束的量与通过孔的开口的光束的量的比率的变化率不大于4％。

公开(公告)号：US20130033558A1

公开(公告)日：2013-02-07

申请号：US13556500

申请日：2012-07-24

申请人： Kazuhiro AKATSU ,  Seizo Suzuki ,  Masaaki Ishida

发明人： Kazuhiro AKATSU ,  Seizo Suzuki ,  Masaaki Ishida

IPC分类号： B41J2/435 ,  G01D5/34

CPC分类号： G02B26/127 ,  B41J2/455 ,  B41J2/473

摘要： An optical scanning device including a light source having multiple light emitters; an optical element to reflect and transmit the emitted light beams; a photodetector to receive the reflected light beams; an aperture having an opening to shape the transmitted light beams; a light deflector to deflect the transmitted light beams; and a scanning optics to guide the deflected light beams to a scanning surface. The quantity of each of the light beams received by the photodetector is not less than 0.01 mW, and the size of a light receiving surface of the photodetector is determined such that even when the full width at half maximum of the emitted light beams changes, the rate of change of the ratio of the quantity of the light beams detected by the photodetector to the quantity of the light beams passing through the opening of the aperture is not greater than 4%.

摘要翻译： 一种光学扫描装置，包括具有多个发光体的光源; 用于反射和透射发射的光束的光学元件; 用于接收反射光束的光电检测器; 具有用于使透射光束成形的开口的孔; 光偏转器，用于偏转透射光束; 以及用于将偏转的光束引导到扫描表面的扫描光学器件。 由光电检测器接收的每个光束的量不小于0.01mW，并且确定光电检测器的光接收表面的尺寸，使得即使当发射光束的最大半峰全部变化时， 由光检测器检测的光束的量与通过孔的开口的光束的量的比率的变化率不大于4％。

公开(公告)号：US08983318B2

公开(公告)日：2015-03-17

申请号：US13843147

申请日：2013-03-15

申请人： Atsufumi Omori ,  Masaaki Ishida ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

发明人： Atsufumi Omori ,  Masaaki Ishida ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

IPC分类号： G03G15/00

CPC分类号： G03G15/556 ,  G03G15/5058

摘要： An image forming apparatus is disclosed, including a light source; a drum; an optical scanning apparatus; and an endless belt. The image forming apparatus further includes a pattern forming unit which forms, on the endless belt along a conveying direction of the endless belt, a density fluctuation detecting pattern having a period; a density sensor which detects the density fluctuating detecting pattern and outputs a density signal including information on density fluctuations in the conveying direction of the endless belt; and a period detecting sensor which detects the period included in the density fluctuations.

摘要翻译： 公开了一种图像形成装置，包括光源; 鼓 光学扫描装置; 和无尽的皮带。 图像形成装置还包括图案形成单元，其沿环形带的输送方向在环形带上形成具有周期的浓度波动检测图案; 密度传感器，其检测所述浓度波动检测图案，并输出密度信号，所述浓度信号包括关于环形带的传送方向上的密度波动的信息; 以及周期检测传感器，其检测包含在密度波动中的周期。

公开(公告)号：US08929759B2

公开(公告)日：2015-01-06

申请号：US13889781

申请日：2013-05-08

申请人： Muneaki Iwata ,  Kazuhiro Akatsu ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

发明人： Muneaki Iwata ,  Kazuhiro Akatsu ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

IPC分类号： G03G15/00 ,  G03G13/04 ,  G03G15/043

CPC分类号： G03G13/04 ,  G03G15/043 ,  G03G15/5041 ,  G03G15/5054 ,  G03G15/55

摘要： An image forming apparatus includes: a density detection unit that detects densities of an image developed by a developing unit at a plurality of positions in a main-scanning direction; a processing unit that obtains at least one of an amplitude and a phase of a first periodical density change of the image, of which cycle is a rotation cycle of a photosensitive drum, at the plurality of positions in the main-scanning direction on the basis of an output signal of the density detection unit, and corrects a drive signal for the light source so as to suppress the first periodical density change of the image at each position in the main-scanning direction on the basis of the rotation cycle of the photosensitive drum and at least one of the amplitude and the phase.

摘要翻译： 图像形成装置包括：浓度检测单元，其检测由主扫描方向上的多个位置处的显影单元显影的图像的浓度; 处理单元，其基于在主扫描方向上的多个位置处获取图像的第一周期性密度变化的幅度和相位中的至少一个，哪个周期是感光鼓的旋转周期 并且校正用于光源的驱动信号，以便基于感光体的旋转周期来抑制主扫描方向上每个位置处的图像的第一周期性密度变化 鼓和振幅和相位中的至少一个。

公开(公告)号：US20130243459A1

公开(公告)日：2013-09-19

申请号：US13843147

申请日：2013-03-15

申请人： Atsufumi OMORI ,  Masaaki Ishida ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

发明人： Atsufumi OMORI ,  Masaaki Ishida ,  Kazuhiro Akatsu ,  Muneaki Iwata ,  Hayato Fujita

IPC分类号： G03G15/00

CPC分类号： G03G15/556 ,  G03G15/5058

摘要： An image forming apparatus is disclosed, including a light source; a drum; an optical scanning apparatus; and an endless belt. The image forming apparatus further includes a pattern forming unit which forms, on the endless belt along a conveying direction of the endless belt, a density fluctuation detecting pattern having a period; a density sensor which detects the density fluctuating detecting pattern and outputs a density signal including information on density fluctuations in the conveying direction of the endless belt; and a period detecting sensor which detects the period included in the density fluctuations.

摘要翻译： 公开了一种图像形成装置，包括光源; 鼓 光学扫描装置; 和无尽的皮带。 图像形成装置还包括图案形成单元，其沿环形带的输送方向在环形带上形成具有周期的浓度波动检测图案; 密度传感器，其检测所述浓度波动检测图案，并输出密度信号，所述浓度信号包括关于环形带的传送方向上的密度波动的信息; 以及周期检测传感器，其检测包含在密度波动中的周期。

公开(公告)号：US20130302052A1

公开(公告)日：2013-11-14

申请号：US13889781

申请日：2013-05-08

申请人： Muneaki IWATA ,  Kazuhiro Akatsu ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

发明人： Muneaki IWATA ,  Kazuhiro Akatsu ,  Masaaki Ishida ,  Atsufumi Omori ,  Hayato Fujita

IPC分类号： G03G15/00

CPC分类号： G03G13/04 ,  G03G15/043 ,  G03G15/5041 ,  G03G15/5054 ,  G03G15/55

摘要： An image forming apparatus includes: a density detection unit that detects densities of an image developed by a developing unit at a plurality of positions in a main-scanning direction; a processing unit that obtains at least one of an amplitude and a phase of a first periodical density change of the image, of which cycle is a rotation cycle of a photosensitive drum, at the plurality of positions in the main-scanning direction on the basis of an output signal of the density detection unit, and corrects a drive signal for the light source so as to suppress the first periodical density change of the image at each position in the main-scanning direction on the basis of the rotation cycle of the photosensitive drum and at least one of the amplitude and the phase.

摘要翻译： 图像形成装置包括：浓度检测单元，其检测由主扫描方向上的多个位置处的显影单元显影的图像的浓度; 处理单元，其基于在主扫描方向上的多个位置处获取图像的第一周期性密度变化的幅度和相位中的至少一个，哪个周期是感光鼓的旋转周期 并且校正用于光源的驱动信号，以便基于感光体的旋转周期来抑制主扫描方向上每个位置处的图像的第一周期性密度变化 鼓和振幅和相位中的至少一个。

公开(公告)号：US07256815B2

公开(公告)日：2007-08-14

申请号：US10323837

申请日：2002-12-20

申请人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Magane Aoki ,  Yasuhiro Nihei

发明人： Seizo Suzuki ,  Masaaki Ishida ,  Atsufumi Omori ,  Magane Aoki ,  Yasuhiro Nihei

IPC分类号： B41J2/435

CPC分类号： G02B26/123 ,  B41J2/473

摘要： An optical scan device having an optical deflector reflecting a light beam from a light beam source so as to deflect the light beam and having a surface to be scanned on which information is written such that the light beam deflected by the deflector scans the surface is disclosed. Optical detectors are arranged at least in two locations, a start side of writing and an end side of writing, which locations are outside an effective writing area. A measuring part measures a scan time required by the light beam deflected by the optical deflector to scan a range between the optical detectors. A correcting part corrects each dot position of image data in the effective writing area to an arbitrary position based on a variation amount of the measured scan time.

摘要翻译： 一种光学扫描装置，其具有反射来自光束源的光束的光学偏转器，以便偏转光束并且具有写入信息的要被扫描的表面，使得偏转器偏转的光束扫描该表面 。 光检测器至少布置在写入的起始侧和写入的结束侧的两个位置中，哪些位置在有效写入区域之外。 测量部件测量由光学偏转器偏转的光束所需的扫描时间，以扫描光学检测器之间的范围。 校正部分基于测量的扫描时间的变化量将有效写入区域中的图像数据的每个点位置校正到任意位置。

公开(公告)号：US07903135B2

公开(公告)日：2011-03-08

申请号：US12110862

申请日：2008-04-28

申请人： Daisuke Ichii ,  Yoshinori Hayashi ,  Seizo Suzuki ,  Masaaki Ishida ,  Makoto Hirakawa

发明人： Daisuke Ichii ,  Yoshinori Hayashi ,  Seizo Suzuki ,  Masaaki Ishida ,  Makoto Hirakawa

IPC分类号： B41J2/45

CPC分类号： G03G15/326 ,  B41J2/473 ,  G02B26/123 ,  G03G15/043 ,  G03G15/0435 ,  G03G2215/0407 ,  H04N1/1135 ,  H04N1/12 ,  H04N1/1912 ,  H04N1/1917 ,  H04N2201/0082

摘要： An optical scanning device which scans a scanned surface by a plurality of light beams in a main-scanning direction includes a light source having a plurality of light-emitting portions which emit the light beams, the light-emitting portions being two-dimensionally arranged in a plane parallel to the main-scanning direction and a sub-scanning direction orthogonal to the main-scanning direction via arrangement intervals in the main-scanning direction and the sub-scanning direction, a deflector which scans the light beams in the main-scanning direction; and a scanning optical system which images the scanned light beams onto the scanned surface.

摘要翻译： 在主扫描方向上通过多个光束扫描扫描表面的光学扫描装置包括具有发射光束的多个发光部分的光源，发光部分二维布置在 与主扫描方向平行的平面和与主扫描方向正交的副扫描方向经由主扫描方向和副扫描方向的配置间隔，偏转器，扫描主扫描方向的光束 方向; 以及扫描光学系统，其将扫描的光束成像到扫描的表面上。