公开(公告)号：US20240264550A1

公开(公告)日：2024-08-08

申请号：US18430226

申请日：2024-02-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： HAYATO KATO ,  KAZUMI KIMURA ,  HIROKI YOSHIDA

IPC: G03G15/041 ,  G03G15/04

CPC classification number: G03G15/0415 ,  G03G15/0409 ,  G03G2215/0404

Abstract: Provided is an apparatus including: a deflecting unit configured to deflect a light flux from a light source to scan a scanned surface in a main scanning direction while rotating at a constant angular velocity; and an optical system configured to guide the deflected light flux onto the scanned surface, wherein, in a main scanning cross section including an optical axis of the optical system, a width of the light flux on a deflecting surface of the deflecting unit is larger than a width of the deflecting surface, wherein a scanning speed of the light flux on the scanned surface is highest at an on-axis image height, and wherein an absolute value of a scanning acceleration of the light flux on the scanned surface increases monotonically from the on-axis image height toward an outermost off-axis image height.

公开(公告)号：US20180157190A1

公开(公告)日：2018-06-07

申请号：US15816987

申请日：2017-11-17

Applicant: Konica Minolta, Inc.

Inventor： Daisuke KOBAYASHI ,  Takashi KUROSAWA ,  Naoki TAJIMA ,  Makoto OOKI ,  Hideo UEMURA

IPC: B41J2/385

CPC classification number: G03G15/04036 ,  G03G15/0415

Abstract: A scanning optical apparatus includes a light source, a deflector and an imaging optical system. The deflector deflects a beam emitted from the light source to scan a scanning surface with the beam in a main scanning direction. The imaging optical system focuses the beam on the scanning surface. The imaging optical system includes a first lens having negative power in a sub scanning direction and a second lens having positive power in the sub scanning direction, in which the sub scanning direction is parallel to the scanning surface and perpendicular to the main scanning direction. The power φ1 of the first lens, the power φ2 of the second lens and a magnification β in the sub scanning direction of the imaging optical system satisfy the conditions −1.2≤φ1/φ2≤−0.9 and −1.3≤β≤−0.8.

公开(公告)号：US09618874B2

公开(公告)日：2017-04-11

申请号：US14853076

申请日：2015-09-14

Applicant: Tatsuya Miyadera

Inventor： Tatsuya Miyadera

IPC: H04N1/04 ,  G03G15/043 ,  G03G15/041

CPC classification number: G03G15/043 ,  G03G15/0415 ,  G03G2215/0129

Abstract: A write control apparatus is for receiving one page worth of image data and performing processes, and writing an image by exposing a photoconductor. The write control apparatus includes a write control unit including a process function unit for performing the processes; a computer for generating setting values of parameters used by the process function unit; and first and second memories for storing the setting values. When the computer sends a trigger signal to start image formation to the write control unit, the second memory stores one page worth of the setting values stored in the first memory, and the setting values of a desired page among a plurality of pages worth of the setting values stored in the second memory are applied to operations by the process function unit when the write control unit controlled by the computer writes an image of the desired page.

公开(公告)号：US20170082941A1

公开(公告)日：2017-03-23

申请号：US15363076

申请日：2016-11-29

Applicant: HEWLETT-PACKARD INDIGO B.V.

Inventor： Mark Sandler ,  Shai Lior

IPC: G03G15/043

CPC classification number: G03G15/043 ,  G03G15/0415 ,  G03G15/10 ,  G03G15/5062 ,  G03G2215/00755 ,  G03G2215/00759

Abstract: A method of operating a printing system includes determining whether ghosting is expected on a photoreceptor and applying power to a laser applied to the photoreceptor based on whether the ghosting is expected.

公开(公告)号：US09122190B2

公开(公告)日：2015-09-01

申请号：US14495034

申请日：2014-09-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroki Sato

IPC: B41J2/385 ,  B41J2/47 ,  G03G15/041 ,  G03G15/04

CPC classification number: G03F7/70191 ,  G03G15/04036 ,  G03G15/0415

Abstract: An image forming apparatus which makes it possible to grasp such settings of a phase and a main scanning magnification of laser beams as reduce occurrence of moire, by visually checking a plurality of pattern images. Pattern images are formed using a laser beam irradiated from a reference light source and a laser beam irradiated from an adjustment target light source for which each of different phase values is set as a phase setting value. A phase relationship between the phases of the laser beams is adjusted based on the pattern images. Pattern images are formed using a laser beam irradiated from the adjustment target light source for which each of different magnification values is set as a magnification setting value. The magnification of the laser beams is adjusted based on these pattern images.

Abstract translation: 通过目视检查多个图案图像，能够通过图像形成装置来掌握激光束的相位和主扫描倍率的设定，以减少波纹的发生。 图案图像使用从参考光源照射的激光束和从调整对象光源照射的激光束形成，其中各个相位值被设置为相位设定值。 基于图案图像来调整激光束的相位之间的相位关系。 使用从调整对象光源照射的激光束形成图案图像，其中各个不同的倍率值被设置为倍率设定值。 基于这些图案图像来调整激光束的放大倍率。

公开(公告)号：US20140210926A1

公开(公告)日：2014-07-31

申请号：US14153572

申请日：2014-01-13

Applicant: Konica Minolta, Inc.

Inventor： Mutsumi Takagi

IPC: B41J2/385

CPC classification number: G03G15/0415 ,  G03G15/5054

Abstract: An image forming apparatus includes an image forming unit which transfers an image obtained through exposure and development to paper, and a control unit which changes a rotation speed of a polygon mirror at an intermediate area on a carrier to change a reduction/magnification ratio of an image. The control unit changes the rotation speed in a stepwise manner in such a way as to allow a stable rotation of the polygon mirror in each step, and controls the image forming unit to form a corrected patch image in parallel with the stepwise change of the rotation speed. The corrected patch image is obtained through correction in accordance with the stepwise change of the rotation speed to be the same as the patch image formed when the rotation speed is not changed.

Abstract translation: 图像形成装置包括：图像形成单元，其将通过曝光和显影获得的图像转印到纸张;以及控制单元，其改变载体上的中间区域处的多面镜的旋转速度，以改变载体的缩小/放大比 图片。 控制单元以逐步的方式改变旋转速度，以允许每个步骤中的多面镜的稳定旋转，并且控制图像形成单元以与旋转的逐步改变并行地形成校正的补丁图像 速度。 通过根据旋转速度的逐步变化通过校正获得校正的补丁图像，使其与当转速没有改变时形成的补丁图像相同。

公开(公告)号：US20110116835A1

公开(公告)日：2011-05-19

申请号：US12902582

申请日：2010-10-12

Applicant: Yuuta Naito

Inventor： Yuuta Naito

IPC: G03G15/01 ,  G02B26/10 ,  G03G15/28

CPC classification number: G03G15/0415 ,  G02B26/123

Abstract: A scanning optical apparatus includes scanning units, a deflector. Each of the apparatuses includes a light source, an imaging optical system including imaging optical elements imaging a beam deflected by the deflector on a scanning surface. The scanning surfaces are scanned with beams in opposing directions. When a main scanning direction of the first scanning unit is a Y positive direction, a sign is the same between θ1h(Y1min)×θ1r and θ2h(Y1min)×θ2r. Here, θ1h(y), θ2h(y) denote orientation angles between the Y axis and a slow axis at a Y direction position y of first/second imaging optical elements from an optical axis, the imaging optical elements each being an imaging optical element having a largest thickness among them of the imaging optical systems, θ1r and θ2r denote angles between the Y axis and polarization directions of the beams reaching the imaging optical elements, and Y1min denotes a Y position where θ1h(y) becomes minimum.

Abstract translation: 扫描光学装置包括扫描单元，偏转器。 每个装置包括光源，成像光学系统，其包括成像光学元件，其将由偏转器偏转的光束成像在扫描表面上。 用相反方向的光束扫描扫描表面。 当第一扫描单元的主扫描方向为Y正方向时，在1h（Y1min）×＆thetas; 1r和＆amp; thetas; 2h（Y1min）×＆thetas; 2r之间的符号相同。 这里，＆thetas; 1h（y），＆thetas; 2h（y）表示第一/第二成像光学元件从光轴的Y方向位置y处的Y轴与慢轴之间的取向角，成像光学元件 成像光学系统之间具有最大厚度的成像光学元件，1r和＆amp; thetas; 2r表示到达成像光学元件的光束的Y轴和偏振方向之间的角度，Y1min表示Y位置，其中＆ 1h（y）变为最小。

公开(公告)号：US20110103813A1

公开(公告)日：2011-05-05

申请号：US12300084

申请日：2006-05-10

Applicant: Eyal Shelef ,  Michael Plotkin ,  Haim Livne ,  Craig Breen ,  Gideon Gidi Amir ,  Barak Markus ,  Maya Shalev ,  Gregory Braverman ,  Shlomo Harush

Inventor： Eyal Shelef ,  Michael Plotkin ,  Haim Livne ,  Craig Breen ,  Gideon Gidi Amir ,  Barak Markus ,  Maya Shalev ,  Gregory Braverman ,  Shlomo Harush

IPC: G03G15/00 ,  G03G15/043

CPC classification number: G03G15/0415 ,  G03G2215/0429

Abstract: A correction method for correcting unintended spatial variation in lightness across a physical image produced by a xerographic process, the method comprising producing a test image using the xerographic process, measuring a difference between actual lightness and intended lightness across at least part of the test image, and varying the light source level used subsequently in the xerographic process to correct for the measured unintended difference.

Abstract translation: 一种校正方法，用于校正通过静电复印印刷工艺产生的物理图像上的无意的空间变化，所述方法包括使用静电印刷工艺产生测试图像，测量穿过至少部分测试图像的实际亮度与预期亮度之间的差异， 并改变随后在静电印迹过程中使用的光源水平，以校正测量的非预期差异。

公开(公告)号：US20100260509A1

公开(公告)日：2010-10-14

申请号：US12824852

申请日：2010-06-28

Applicant: Shinji Aoki ,  Masashi Takahashi ,  Masashi Hiroki ,  Takeshi Watanabe

Inventor： Shinji Aoki ,  Masashi Takahashi ,  Masashi Hiroki ,  Takeshi Watanabe

IPC: G03G15/01

CPC classification number: G03G21/0064 ,  G03G15/0115 ,  G03G15/0173 ,  G03G15/0189 ,  G03G15/0194 ,  G03G15/0415 ,  G03G2215/0119 ,  G03G2215/0164 ,  G03G2215/0602

Abstract: There is provided a photoreceptor cleanerless image forming apparatus capable of decreasing color mixture or an exposure error due to reverse transfer toner or untransferred toner.An image forming apparatus 100 according to the present invention comprises four image forming units 100a, 100b, 100c, and 100d configured to be photoreceptor cleanerless in a 4-drum tandem manner. Each image forming unit includes a photoreceptor 103a, 103b, 103c, or 103d, a charger 105a, 105b, 105c, or 105d, an exposure apparatus 106a, 106b, 106c, or 106d, and a developing apparatus 109a, 109b, 109c, or 109d. When exposure intensities Iy, Ic, Im, and Ik are assumed for exposure sources of the exposure apparatuses in the image forming units which form yellow, magenta, cyan, and black images, respectively, the exposure intensities are configured to satisfy conditions of Ik≧Ic≧Im≧Iy and Ik>Iy. This decreases an exposure error (image hysteresis) in an image formed on paper.

Abstract translation: 提供了能够减少由于反向转印调色剂或未转印调色剂引起的混色或曝光误差的光感受器无清洁器成像设备。 根据本发明的图像形成装置100包括四个成像单元100a，100b，100c和100d，其被配置为以4鼓串联的方式成为无感光体清洁器。 每个图像形成单元包括感光体103a，103b，103c或103d，充电器105a，105b，105c或105d，曝光装置106a，106b，106c或106d以及显影装置109a，109b，109c或 109d。 对于分别形成黄色，品红色，青色和黑色图像的图像形成单元中的曝光装置的曝光源，假设曝光强度Iy，Ic，Im和Ik，曝光强度被配置成满足条件Ik≥ Ic≧Im≧Iy和Ik> Iy。 这降低了在纸上形成的图像中的曝光误差（图像迟滞）。

公开(公告)号：US20070279475A1

公开(公告)日：2007-12-06

申请号：US11889485

申请日：2007-08-14

Applicant: Shinji Aoki ,  Masashi Takahashi ,  Masashi Hiroki ,  Takeshi Watanabe

Inventor： Shinji Aoki ,  Masashi Takahashi ,  Masashi Hiroki ,  Takeshi Watanabe

IPC: B41J2/385

CPC classification number: G03G21/0064 ,  G03G15/0115 ,  G03G15/0173 ,  G03G15/0189 ,  G03G15/0194 ,  G03G15/0415 ,  G03G2215/0119 ,  G03G2215/0164 ,  G03G2215/0602

Abstract: There is provided a photoreceptor cleanerless image forming apparatus capable of decreasing color mixture or an exposure error due to reverse transfer toner or untransferred toner. An image forming apparatus 100 according to the present invention comprises four image forming units 100a, 100b, 100c, and 100d configured to be photoreceptor cleanerless in a 4-drum tandem manner. Each image forming unit includes a photoreceptor 103a, 103b, 103c, or 103d, a charger 105a, 105b, 105c, or 105d, an exposure apparatus 106a, 106b, 106c, or 106d, and a developing apparatus 109a, 109b, 109c, or 109d. When exposure intensities Iy, Ic, Im, and Ik are assumed for exposure sources of the exposure apparatuses in the image forming units which form yellow, magenta, cyan, and black images, respectively, the exposure intensities are configured to satisfy conditions of Ik≧Ic≧Im≧Iy and Ik >Iy. This decreases an exposure error (image hysteresis) in an image formed on paper.

Abstract translation: 提供了能够减少由于反向转印调色剂或未转印调色剂引起的混色或曝光误差的光感受器无清洁器成像设备。 根据本发明的图像形成装置100包括四个成像单元100a，100b，100c和100d，其构造成以4滚筒串联方式为光感受器无清洁器。 每个图像形成单元包括感光体103a，103b，103c或103d，充电器105a，105b，105c或105d，曝光设备106a，106b，106c或106d ，以及显影装置109a，109b，109c或109d。 对于分别形成黄色，品红色，青色和黑色图像的图像形成单元中的曝光装置的曝光源，假设曝光强度Iy，Ic，Im和Ik，曝光强度被配置为满足条件Ik> = Ic> = Im> = Iy和Ik> Iy。 这降低了在纸上形成的图像中的曝光误差（图像迟滞）。