公开(公告)号：US20200285175A1

公开(公告)日：2020-09-10

申请号：US16811340

申请日：2020-03-06

Applicant: CANON KABUSHIKI KAISHA

Inventor： Kazushi Ino ,  Hiroyuki Yamazaki ,  Hiroshi Kawamura

IPC: G03G15/16

Abstract: An image forming apparatus includes an intermediary transfer belt, first to third image bearing members, a driving member, and first and second drive transmission members, and includes first to third transfer positions. A first inter-transfer-position distance between the first and second transfer positions and the second inter-transfer-position distance between the second and third transfer positions are different from each other. The first inter-transfer-position distance is set at “N×A” and the second inter-transfer-position distance is set at “N×A±N×A/i”, where N is an integer of rotations of the driving member during to movement of the belt in the first inter-transfer-position distance, A is a distance of movement of the belt when the driving member rotates through one-full circumference, and i is a transmission ratio between the first and second drive transmission members.

公开(公告)号：US10191428B2

公开(公告)日：2019-01-29

申请号：US15496412

申请日：2017-04-25

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroyuki Yamazaki ,  Takuya Mukaibara

IPC: G03G15/00 ,  G03G15/01

Abstract: An image forming apparatus performs misregistration correction based on a detection result of a detection pattern. The detection pattern includes basic patterns arranged at a first interval in a sub-scanning direction. Each basic pattern includes N image groups arranged at a second interval. In the N image groups, a first group including an image at a first angle and a second group including an image at a second angle are arranged alternately in the sub-scanning direction. The first interval corresponds to a distance that a surface of an image carrier moves in a period of M times a first period corresponding to a rotation period of a rotational member, and the second interval corresponds to a distance that a surface of the image carrier moves in a period of 1/(N−1) of the first period.

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：US09513587B2

公开(公告)日：2016-12-06

申请号：US14613742

申请日：2015-02-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Wataru Uchida ,  Satoru Taniguchi ,  Hiroyuki Yamazaki ,  Toshifumi Kitamura

IPC: G03G15/00

CPC classification number: G03G15/553

Abstract: An image forming apparatus includes a detection unit that detects information about a used amount of a unit, and a control unit that outputs information indicating that the unit is required to be replaced when the information about the detected used amount reaches a first predetermined threshold value, wherein the control unit changes the threshold value to a second threshold value according to information about the used amount when the unit is replaced.

Abstract translation: 图像形成装置包括：检测单元，其检测关于单位的使用量的信息;以及控制单元，当关于检测到的使用量的信息达到第一预定阈值时，输出指示要更换单元的信息， 其中，当所述单元被替换时，所述控制单元根据关于使用量的信息将所述阈值改变为第二阈值。

公开(公告)号：US09436147B2

公开(公告)日：2016-09-06

申请号：US14608759

申请日：2015-01-29

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroyuki Yamazaki

IPC: G03G15/00 ,  G06K15/00

CPC classification number: G03G15/556 ,  G06K15/4075

Abstract: An edge counter counts the number of edges satisfying a predetermined condition to provide an edge count. A pixel counter counts the number of pixels satisfying a predetermined condition to provide a pixel count. An image determination unit and a toner amount acquisition unit obtain a toner consumption amount based on the edge count and the pixel count for each area.

Abstract translation: 边缘计数器对满足预定条件的边缘数进行计数以提供边缘计数。 像素计数器对满足预定条件的像素数进行计数以提供像素数。 图像确定单元和调色剂量获取单元基于每个区域的边缘计数和像素数获得调色剂消耗量。

公开(公告)号：US20150301498A1

公开(公告)日：2015-10-22

申请号：US14686624

申请日：2015-04-14

Applicant: CANON KABUSHIKI KAISHA

Inventor： Toshifumi Kitamura ,  Satoru Taniguchi ,  Wataru Uchida ,  Hiroyuki Yamazaki

IPC: G03G15/20

CPC classification number: G03G15/55 ,  B65H7/02 ,  B65H7/20 ,  G03G15/553 ,  G03G21/203

Abstract: An image forming apparatus includes a fixing unit that fixes an image, an obtaining unit that obtains information regarding conveying time taken to convey a recording material, a detection unit that detects information regarding an environment, and a control unit configured to determine, based on the information regarding the conveying time and the information regarding the environment, a timing at which the fixing unit is replaced.

Abstract translation: 图像形成装置包括固定图像的定影单元，获取关于传送记录材料的传送时间的信息的获取单元，检测关于环境的信息的检测单元以及基于 关于传送时间的信息和关于环境的信息，定影单元被更换的时刻。

公开(公告)号：US20190033578A1

公开(公告)日：2019-01-31

申请号：US16039042

申请日：2018-07-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Takaomi Uezono ,  Hiroyuki Yamazaki

IPC: G02B26/12 ,  G03G15/04 ,  G03G15/043 ,  G06K15/12

CPC classification number: G02B26/127 ,  G02B26/124 ,  G03G15/04027 ,  G03G15/043 ,  G03G2215/047 ,  G06K15/021 ,  G06K15/1219 ,  G06K15/129 ,  H04N1/50 ,  H04N1/52

Abstract: An image forming apparatus includes: a specification unit configured to perform surface specification processing for specifying a reflective surface that deflects light; a correction unit configured to perform correction processing for correcting image data in accordance with which reflective surface deflects light; and a control unit configured to control so as to cause scanning of a first photosensitive member to start before the surface specification processing completes, and control so as to, after the surface specification processing completes, cause the correction processing to be performed, with respect to image data for causing light to be emitted from a second light source and in accordance with a specification result of the surface specification processing, and cause scanning of the second photosensitive member to start.

公开(公告)号：US10142515B2

公开(公告)日：2018-11-27

申请号：US15430144

申请日：2017-02-10

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yuki Nishizawa ,  Hiroyuki Yamazaki ,  Michio Sugano

IPC: G03G15/00 ,  H04N1/407 ,  H04N1/00 ,  H04N1/56 ,  H04N1/60

Abstract: An image forming apparatus includes an input unit configured to input image data, an image forming unit configured to form an image on a recording material based on the input image data, a reading unit configured to read the image formed on the recording material, and a control unit configured to, based on the input image data and the image read by the reading unit, acquire a plurality of change amounts from the read image, and determine a type of an abnormal image based on a plurality of the acquired change amounts.

公开(公告)号：US09772591B2

公开(公告)日：2017-09-26

申请号：US15039823

申请日：2014-11-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Satoru Taniguchi ,  Wataru Uchida ,  Hiroyuki Yamazaki ,  Toshifumi Kitamura

IPC: G03G15/00

CPC classification number: G03G15/5016 ,  G03G15/502 ,  G03G15/553

Abstract: To notify a residual life of a replaceable part at appropriate time on image quality required by the user. An image forming apparatus including: a replaceable part used for image formation; an output unit configured to output information indicating that a usage amount has reached a threshold; an input unit configured to input information; and a control unit configured to change the threshold in accordance with information about image quality input by the input unit.

公开(公告)号：US11310387B2

公开(公告)日：2022-04-19

申请号：US16281467

申请日：2019-02-21

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroyuki Yamazaki

IPC: G06F3/12 ,  H04N1/00 ,  H04N1/60

Abstract: An image forming apparatus is provided, for which a color material cartridge that contains color material and has a storage unit can be attached/detached. The apparatus comprises an obtaining unit that obtains color material information related to a color of the color material stored in the storage unit, a generator that generates a color conversion parameter based on the color material information, and a color convertor that converts the input image signal into a color signal for the color material using the color conversion parameter. If the color material information is not changed, the generator does not generate the color conversion parameter, otherwise the apparatus generates the color conversion parameter based on the color material information after the change.