公开(公告)号：US09075334B2

公开(公告)日：2015-07-07

申请号：US13895565

申请日：2013-05-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: G03G15/00 ,  G03G15/02

CPC classification number: G03G15/0266

Abstract: An image forming apparatus includes: a photosensitive member driven rotary; a charging unit configured to charge the photosensitive member; an exposure unit configured to form an electrostatic latent image on the photosensitive member by exposing the charged photosensitive member; a detecting unit configured to detect a current flowing between the charging unit and the photosensitive member; and a correction unit configured to determine a fluctuation location and a fluctuation amount of the charged potential of the photosensitive member, according to a fluctuation amount of the current detected by the detecting unit, and to correct an amount of light irradiated by the exposure unit onto the photosensitive member at the fluctuation location of the charged potential according to the determined fluctuation amount of the potential.

Abstract translation: 图像形成装置包括：感光构件驱动旋转体; 配置为对感光构件充电的充电单元; 曝光单元，被配置为通过使所述带电的感光构件曝光来在所述感光构件上形成静电潜像; 检测单元，被配置为检测在所述充电单元和所述感光构件之间流动的电流; 以及校正单元，被配置为根据由检测单元检测的电流的波动量来确定感光构件的充电电位的波动位置和波动量，并将由曝光单元照射的光量校正到 根据确定的电位变动量，在充电电位的波动位置处的感光构件。

公开(公告)号：US20130293930A1

公开(公告)日：2013-11-07

申请号：US13875682

申请日：2013-05-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Yuuji Takayama ,  Tomoyuki Saiki ,  Hikaru Uchidate

IPC: H04N1/00

CPC classification number: H04N1/00278 ,  H04N1/00005 ,  H04N1/00037 ,  H04N1/0005 ,  H04N1/00063 ,  H04N1/00087 ,  H04N1/00578 ,  H04N1/0058 ,  H04N1/00596 ,  H04N1/12 ,  H04N1/2323 ,  H04N1/233 ,  H04N1/405 ,  H04N2201/0082 ,  H04N2201/0091 ,  H04N2201/044

Abstract: In an image forming apparatus, an image of a document is read as document image data, and an image processing method of image data to be overwritten on the document is switched based on the read document image data.

Abstract translation: 在图像形成装置中，文件的图像被读取为文档图像数据，并且基于读取的文档图像数据切换要重写在文档上的图像数据的图像处理方法。

公开(公告)号：US20130141510A1

公开(公告)日：2013-06-06

申请号：US13685264

申请日：2012-11-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: B41J2/435

CPC classification number: G02B26/124 ,  B41J2/471 ,  G02B26/127

Abstract: An image forming apparatus includes: a polygon mirror formed with a plurality of reflection surfaces, and a generating device configured to generate a pulse signal required to modulate a laser beam based on image data. The generating device is further configured to generate a pulse signal by inserting or deleting a pulse signal having a width smaller than a width of a pulse signal corresponding to one pixel of the image data into or from a pulse signal corresponding to the image data based on information associated with deviation amounts between lengths of scanning lines formed by the plurality of reflection surfaces and a reference value, so as to adjust the lengths of the scanning lines formed by the plurality of reflection surfaces to be closer to the reference value.

Abstract translation: 一种图像形成装置，包括：形成有多个反射面的多面镜;以及生成装置，其被配置为基于图像数据生成调制激光所需的脉冲信号。 该发生装置还被配置为通过基于对应于图像数据的脉冲信号插入或删除具有小于对应于图像数据的一个像素的脉冲信号的宽度的脉冲信号而产生脉冲信号 与由多个反射表面形成的扫描线的长度之间的偏移量相关联的信息和参考值，以便将由多个反射表面形成的扫描线的长度调整为更接近参考值。

公开(公告)号：US12124898B2

公开(公告)日：2024-10-22

申请号：US18237178

申请日：2023-08-23

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuki Horiuchi ,  Go Araki ,  Go Shindo

IPC: G06K15/02 ,  G03G15/043

CPC classification number: G06K15/1823 ,  G03G15/043

Abstract: An image forming apparatus includes a unit configured to determine a first region, which is within a range from where a distance from a first edge of an image is a first value to a second value, and a second region, which is within a range from where a distance from the first edge is the second value to a third value; and a decision unit configured to, for each of a plurality of first pixels included in the first region and a plurality of second pixels included in the second region, decide an amount of reduction from an exposure amount, wherein the decision unit makes the amount of reduction of each of the plurality of first pixels greater than the amount of reduction of each of the plurality of second pixels.

公开(公告)号：US11604422B2

公开(公告)日：2023-03-14

申请号：US17592247

申请日：2022-02-03

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: G03G15/043

Abstract: An image forming apparatus includes a storage unit configured to store pattern information and a generation unit configured to generate a drive signal for driving an exposure unit. The pattern information indicates a plurality of exposure patterns for a first pixel, the plurality of exposure patterns are selected such that whether exposure patterns that are identical to each other among the plurality of exposure patterns are adjacent to each other, or two exposure patterns that are different from each other among the plurality of exposure patterns are adjacent to each other in the main scanning direction, the non-exposure regions are not consecutively present between the two exposure patterns, and in a case where the plurality of exposure patterns are consecutively used in the main scanning direction, the generation unit randomly selects an exposure pattern to be used.

公开(公告)号：US20200379392A1

公开(公告)日：2020-12-03

申请号：US16884165

申请日：2020-05-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Yoshihiro Mitsui

IPC: G03G15/00 ,  G03G21/18 ,  G03G15/043

Abstract: An image forming apparatus includes: a storage unit configured to store correction data; an identifying unit configured to identify a correction amount for a correction target pixel, based on the correction data stored in the storage unit; a correction unit configured to correct an exposure amount of the correction target pixel among a plurality of pixels indicated by image data, from an exposure amount indicated by the image data, based on the correction amount for the correction target pixel; and an image forming unit configured to form an image based on an exposure amount after correction by the correction unit. The correction data includes only a correction amount corresponding to each of representative parameter values of a plurality of parameter values of a first parameter for varying the correction amount.

公开(公告)号：US20190250546A1

公开(公告)日：2019-08-15

申请号：US16268640

申请日：2019-02-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: G03G15/00

Abstract: An image forming apparatus configured to form an image in a first mode and in a second mode in which the image forming apparatus is operated under an image forming condition in which developer supplying capability from a developer carrying member to an image bearing member is increased to form the image, the image forming apparatus including: a determination unit configured to determine whether an input image is an image in a predetermined condition in which the input image is a fine line having a predetermined width or less, a miniature image, or a character having predetermined points or less; and a correction unit configured to set a line width thin or lighten density for an image determined as the image in the predetermined condition by the determination unit at a time of forming the image in the second mode.

公开(公告)号：US09927735B2

公开(公告)日：2018-03-27

申请号：US15489450

申请日：2017-04-17

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Hiroyuki Yamazaki ,  Takaomi Uezono ,  Hidenori Kanazawa

IPC: G03G15/00 ,  G03G15/043 ,  H04N1/12 ,  H04N1/21

CPC classification number: G03G15/043 ,  H04N1/1215 ,  H04N1/2166 ,  H04N1/38

Abstract: An image forming apparatus includes: a photosensitive member; an exposure unit configured to divide one pixel into a plurality of pixel pieces and perform exposure on a pixel piece-by-pixel piece basis, to form an electrostatic latent image on the photosensitive member; a determination unit configured to determine, based on image data, an isolated pixel surrounded by blank pixels in the electrostatic latent image; a selection unit configured to select a correction target pixel from the blank pixels surrounding the isolated pixel; and a correction unit configured to correct the image data so as to expose a pixel piece of the correction target pixel.

公开(公告)号：US20160320722A1

公开(公告)日：2016-11-03

申请号：US15205597

申请日：2016-07-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Norihito Naito

IPC: G03G15/043

CPC classification number: G03G15/043 ,  G03G15/50 ,  G03G2215/0431

Abstract: When an edge effect or sweeping occurs in a developing material, pixels, among a plurality of pixels that configure image data, will arise in which a developing material consumption amount rises beyond an original consumption amount. A CPU corrects the developing material consumption amount for the pixels, among the plurality of pixels that configure the image data, in which the developing material consumption amount will rise beyond the original consumption amount.

公开(公告)号：US09485388B2

公开(公告)日：2016-11-01

申请号：US14807010

申请日：2015-07-23

Applicant: CANON KABUSHIKI KAISHA

Inventor： Shigeo Kodama ,  Hisashi Ishikawa ,  Go Araki

IPC: H04N1/46 ,  H04N1/60 ,  H04N1/40 ,  H04N1/405 ,  H04N1/409

CPC classification number: H04N1/40 ,  G06K15/1881 ,  H04N1/405 ,  H04N1/4092

Abstract: An apparatus that corrects multivalued data after halftone processing and which includes a line input unit configured to input multivalued data of a correction line to be corrected among the multivalued data, a detection unit configured to convert multivalued data of a precedent line that precedes the correction line by N lines into dot data and to detect a dot in the precedent line, and a line correction unit configured to correct the multivalued data of the correction line based on a number of linked dots from the bottom-end edge, and the number of linked detected dots is the number of dots that are linked in a sub scanning direction from the correction line down to the bottom-end edge, and the bottom-end edge is an edge at which the density becomes lower in the sub scanning direction and the lower of density values represents the background color.

Abstract translation: 一种在半色调处理之后校正多值数据的装置，包括线路输入单元，被配置为输入多值数据中要校正的校正线的多值数据;检测单元，被配置为转换校正行之前的先前行的多值数据 由N行变成点数据并检测前一行中的点，以及行校正单元，被配置为基于来自底端边缘的链接数量校正校正线的多值数据，以及链接的数量 检测点是从副校正线向下端边缘的副扫描方向上连接的点数，底端边缘是副扫描方向的密度变低的边缘，下侧边缘 的密度值代表背景颜色。