公开(公告)号：US20140003828A1

公开(公告)日：2014-01-02

申请号：US13895565

申请日：2013-05-16

Applicant: Canon Kabushiki Kaisha

Inventor： Go Araki

IPC: 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：US20130308166A1

公开(公告)日：2013-11-21

申请号：US13888494

申请日：2013-05-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hikaru Uchidate ,  Yuji Takayama ,  Tomoyuki Saiki ,  Go Araki ,  Kazuo Ogata ,  Hiroko Katsuyama ,  Ichiro Yasumaru

IPC: H04N1/40

CPC classification number: H04N1/40093 ,  H04N1/00864

Abstract: The image forming apparatus reads an original conveyed in the image forming apparatus, analyzes a feature value of information about an original image on the read original, generates an image to overwrite the original image with, using image data having the feature value obtained based on an analysis result, sets a predetermined area on the original image, and overwrites the predetermined area on the original image with the generated image.

Abstract translation: 图像形成装置读取在图像形成装置中传送的原稿，对读取的原稿上的原始图像的信息的特征值进行分析，生成图像以覆盖原始图像，使用具有基于 分析结果，在原始图像上设置预定区域，并用生成的图像覆盖原始图像上的预定区域。

公开(公告)号：US08587836B2

公开(公告)日：2013-11-19

申请号：US13681865

申请日：2012-11-20

Applicant: Canon Kabushiki Kaisha

Inventor： Go Araki ,  Yuuji Takayama ,  Tomoyuki Saiki ,  Hisashi Ishikawa

IPC: H04N1/409

CPC classification number: H04N1/04 ,  H04N1/4052 ,  H04N1/4056

Abstract: A 2-pixel averaging unit (101) halves an input image in the subscanning direction, and a multi-level error diffusion unit (102) performs multi-level error diffusion processing. A 2-pixel reconstruction unit (103) replaces each pixel with two pixels adjacent in the subscanning direction. A density value exchange unit (104) exchanges pixel values adjacent in the subscanning direction in each of 2×2 pixel blocks arranged in a checkered pattern in the image after replacement. High-density blocks each serving as a set of high-density dots and low-density blocks each serving as a set of low-density dots can be generated as 2×2 pixel blocks. The exposure region can be concentrated in PWM conversion.

Abstract translation: 2像素平均单元（101）将副扫描方向上的输入图像减半，多级误差扩散单元（102）执行多级误差扩散处理。 2像素重构单元（103）用副扫描方向相邻的两个像素代替每个像素。 密度值交换单元（104）在更换后的图像中以排列图案的2×2像素块中的每一个中交换副扫描方向相邻的像素值。 作为一组高密度点的高密度块和各自用作低密度点的集合的低密度块可以被生成为2×2像素块。 曝光区域可以集中在PWM转换中。

公开(公告)号：US10261436B2

公开(公告)日：2019-04-16

申请号：US15947658

申请日：2018-04-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: H04N1/00 ,  G03G15/043 ,  G06K15/02 ,  G03G15/00

Abstract: In a case where another first region exists which faces the edge pixel across a second region on a line in a predetermined direction passing through the edge pixel of the first region, the correcting unit selects a correction amount for correcting the exposure amount applied by the exposing unit for the pixel to be corrected from information describing a plurality of correction amounts in accordance with a first number of pixels being a number of pixels on the line within the second region between the first region and the other first region and corrects the exposure amount for the pixel to be corrected in accordance with the selected correction amount.

公开(公告)号：US20180224768A1

公开(公告)日：2018-08-09

申请号：US15947658

申请日：2018-04-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: G03G15/043 ,  H04N1/00 ,  G06K15/02 ,  G03G15/00

CPC classification number: G03G15/043 ,  G03G15/556 ,  G06K15/1867 ,  H04N1/00

Abstract: In a case where another first region exists which faces the edge pixel across a second region on a line in a predetermined direction passing through the edge pixel of the first region, the correcting unit selects a correction amount for correcting the exposure amount applied by the exposing unit for the pixel to be corrected from information describing a plurality of correction amounts in accordance with a first number of pixels being a number of pixels on the line within the second region between the first region and the other first region and corrects the exposure amount for the pixel to be corrected in accordance with the selected correction amount.

公开(公告)号：US09958803B2

公开(公告)日：2018-05-01

申请号：US15344331

申请日：2016-11-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: G03G15/043 ,  H04N1/00 ,  G06K15/02 ,  G03G15/00

CPC classification number: G03G15/043 ,  G03G15/556 ,  G06K15/1867 ,  H04N1/00

Abstract: In a case where another first region exists which faces the edge pixel across a second region on a line in a predetermined direction passing through the edge pixel of the first region, the correcting unit selects a correction amount for correcting the exposure amount applied by the exposing unit for the pixel to be corrected from information describing a plurality of correction amounts in accordance with a first number of pixels being a number of pixels on the line within the second region between the first region and the other first region and corrects the exposure amount for the pixel to be corrected in accordance with the selected correction amount.

公开(公告)号：US09651891B2

公开(公告)日：2017-05-16

申请号：US15205597

申请日：2016-07-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Norihito Naito

IPC: G03G15/04 ,  G03G15/00 ,  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：US20170131655A1

公开(公告)日：2017-05-11

申请号：US15344331

申请日：2016-11-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki

IPC: G06F3/12

CPC classification number: G03G15/043 ,  G03G15/556 ,  G06K15/1867 ,  H04N1/00

Abstract: In a case where another first region exists which faces the edge pixel across a second region on a line in a predetermined direction passing through the edge pixel of the first region, the correcting unit selects a correction amount for correcting the exposure amount applied by the exposing unit for the pixel to be corrected from information describing a plurality of correction amounts in accordance with a first number of pixels being a number of pixels on the line within the second region between the first region and the other first region and corrects the exposure amount for the pixel to be corrected in accordance with the selected correction amount.

公开(公告)号：US20160154355A1

公开(公告)日：2016-06-02

申请号：US15015540

申请日：2016-02-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Norihito Naito

IPC: G03G15/00

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：US20150205222A1

公开(公告)日：2015-07-23

申请号：US14596398

申请日：2015-01-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Go Araki ,  Norihito Naito

IPC: G03G15/08

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.

Abstract translation: 当在显影材料中发生边缘效应或扫描时，将出现在显影材料消耗量超过原始消耗量的情况下，构成图像数据的多个像素之中的像素。 在显影材料消耗量将超过原始消耗量的情况下，CPU校正构成图像数据的多个像素中的像素的显影材料消耗量。