公开(公告)号：US11782363B2

公开(公告)日：2023-10-10

申请号：US17549487

申请日：2021-12-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/16

CPC classification number: G03G15/161

Abstract: An image forming apparatus includes a belt, an image forming unit, a first roller configured to form a transfer portion where the toner image is transferred from the belt to a recording material, a second roller disposed upstream of the first roller, a pressing member disposed upstream of the first roller and downstream of the second roller, a guide member disposed upstream of the transfer portion, and a connecting member configured to electrically connect the guide member and the pressing member to each other.

公开(公告)号：US20220253005A1

公开(公告)日：2022-08-11

申请号：US17585062

申请日：2022-01-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/16

Abstract: An image forming apparatus includes an image bearing member, a transfer belt, a secondary transfer member, a voltage source, a current detecting portion, and a controller. The controller is operable in a first mode in which when a recording material is absent in a secondary transfer portion, a current flowing through the secondary transfer member under application of a first test voltage is detected by the current detecting portion and then information on a current-voltage characteristic of the secondary transfer member is acquired, and in a second mode in which a predetermined test image is transferred from the transfer belt onto the recording material under application of second test voltages and then a test chart for adjusting a transfer voltage set during transfer is outputted. On the basis of the information, the controller changes an interval of the second test voltages applied in the operation in the second mode.

公开(公告)号：US20170343944A1

公开(公告)日：2017-11-30

申请号：US15602942

申请日：2017-05-23

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/00 ,  G03G13/22 ,  G03G15/16 ,  G03G15/06 ,  G03G15/02 ,  G03G15/01

CPC classification number: G03G15/50 ,  G03G13/22 ,  G03G15/0136 ,  G03G15/0189 ,  G03G15/0266 ,  G03G15/065 ,  G03G15/1615 ,  G03G15/1665 ,  G03G15/1675

Abstract: An image forming apparatus includes a first image bearing member, a second image bearing member, an intermediate transfer belt, a first primary transfer member, a second primary transfer member, a secondary transfer outer member, a pre-secondary transfer stretch roller, a driving roller, and an execution portion. The execution portion is configured to execute a first monochromatic mode in which a bias smaller than the primary transfer bias applied to the first primary transfer member in a case where a toner image is formed on the first image bearing member is applied to the first primary transfer member, and the primary transfer bias applied to the second primary transfer member in a case where a toner image is formed on the second image bearing member is applied to the second primary transfer member.

公开(公告)号：US20140186064A1

公开(公告)日：2014-07-03

申请号：US14141019

申请日：2013-12-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/02 ,  G03G15/16

CPC classification number: G03G15/0266

Abstract: An image forming apparatus includes a plurality of photosensitive drums, and a controller for executing, when an absolute value of a set point of a charged potential is not higher than a predetermined threshold, an operation in a first mode in which charging bias voltages and transfer biases are applied to image regions of the drums, and the charging bias voltages are further applied, and thereafter, image exposures are carried out by exposure members, respectively, and for executing, when the absolute value of the set point of the charged potential is higher than the predetermined threshold, an operation in a second mode in which timings of start of applications of the transfer bias voltages to the transfer members are delayed as compared with those in the first mode, respectively.

Abstract translation: 图像形成装置包括多个感光鼓，以及控制器，用于当充电电位的设定点的绝对值不高于预定阈值时，执行充电偏压和转印的第一模式中的操作 将偏压施加到鼓的图像区域，并且进一步施加充电偏压，然后分别由曝光构件执行图像曝光，并且当充电电位的设定点的绝对值为 高于预定阈值的情况下，与第一模式相比，第二模式中的操作，其中传送偏置电压施加到传送构件的定时分别延迟。

公开(公告)号：US11796951B2

公开(公告)日：2023-10-24

申请号：US17961850

申请日：2022-10-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/16 ,  G03G15/00

CPC classification number: G03G15/5062 ,  G03G2215/00067

Abstract: An image forming apparatus includes an image bearing member, an image forming portion, a transfer member, an applying portion, and an executing portion configured to execute an output operation for forming and outputting a chart formed on a recording material on which a plurality of test images are transferred by applying a plurality of voltages to the transfer member by the applying portion. The executing portion changes a change width per level of the test voltage so that the change width is a first change width in a case that a material of the recording material on which the chart is formed is a first material and so that the change width is a second change width different from the first change width in a case that the material of the recording material is a second material different from the first material.

公开(公告)号：US20220187740A1

公开(公告)日：2022-06-16

申请号：US17549487

申请日：2021-12-13

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/16

Abstract: An image forming apparatus includes a belt, an image forming unit, a first roller configured to form a transfer portion where the toner image is transferred from the belt to a recording material, a second roller disposed upstream of the first roller, a pressing member disposed upstream of the first roller and downstream of the second roller, a guide member disposed upstream of the transfer portion, and a connecting member configured to electrically connect the guide member and the pressing member to each other.

公开(公告)号：US10324400B2

公开(公告)日：2019-06-18

申请号：US15891817

申请日：2018-02-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/00 ,  G03G15/16

Abstract: An image forming apparatus includes a transfer member which transfers a toner image formed on an image bearing member to a transfer material; a transfer bias application unit which applies bias to the transfer member; a controller which executes a mode for making a first bias applied to a first predetermined area arranged at a leading edge of a transfer material with respect to a conveying direction of the transfer material to be less than a second bias applied to a second predetermined area arranged in a central area of the transfer material; and an obtaining portion which obtains image information of an image formed in each area obtained by dividing an area corresponding to the leading edge area into plural pieces in the width direction, wherein the controller controls the first bias based on image information obtained by the obtaining portion at the time of the mode.

公开(公告)号：US09395642B2

公开(公告)日：2016-07-19

申请号：US14141019

申请日：2013-12-26

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/02 ,  G03G15/16

CPC classification number: G03G15/0266

Abstract: An image forming apparatus includes a plurality of photosensitive drums, and a controller for executing, when an absolute value of a set point of a charged potential is not higher than a predetermined threshold, an operation in a first mode in which charging bias voltages and transfer bias voltages are applied to image regions of the drums, at a preset length of time before image exposures are carried out by the exposure members and thereafter, the image exposures are carried out by the exposure members, respectively, and for executing, when the absolute value of the set point of the charged potential is higher than the predetermined threshold, an operation in a second mode in which timings of starting applications of the transfer bias voltages to the transfer members are delayed as compared with those in the first mode, respectively.

Abstract translation: 图像形成装置包括多个感光鼓，以及控制器，用于当充电电位的设定点的绝对值不高于预定阈值时，执行充电偏压和转印的第一模式中的操作 偏置电压施加到鼓的图像区域，在曝光构件进行图像曝光之前的预定时间长度，然后分别由曝光构件执行图像曝光，并且当绝对值 充电电位的设定值的值高于预定阈值，在第二模式中的操作，其中转移偏置电压开始施加到转移构件的定时与第一模式中的相比延迟。

公开(公告)号：US20150050037A1

公开(公告)日：2015-02-19

申请号：US14461080

申请日：2014-08-15

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/00 ,  G03G15/16

CPC classification number: G03G15/1675

Abstract: An information forming apparatus includes an execution unit configured to execute a setting mode which sets a voltage to be applied to the transfer member during an image formation operation and a correction mode which corrects the voltage set by the setting mode and a storage unit configured to store in advance a correction current difference based on the environment that is a difference between a current when a predetermined voltage is applied to the transfer member during the first period and a current when a predetermined voltage is applied to the transfer member during the second period. The execution unit corrects the voltage set by the setting mode in accordance with the correction current difference based on a detection result from the first detection member and a detection result from the second detection member in a case that the correction mode is executed during the first period.

Abstract translation: 信息形成装置包括：执行单元，被配置为执行在图像形成操作期间设置要施加到传送构件的电压的设置模式和校正由设置模式设置的电压的校正模式以及被配置为存储的存储单元 基于作为在第一时段期间向转印部件施加预定电压的电流与在第二期间期间向转印部件施加预定电压的电流之间的差的环境的预先校正电流差。 在第一期间执行校正模式的情况下，执行单元基于来自第一检测部件的检测结果和来自第二检测部件的检测结果，根据校正电流差校正由设定模式设定的电压 。

公开(公告)号：US12216426B2

公开(公告)日：2025-02-04

申请号：US18243451

申请日：2023-09-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： Taisuke Matsuura

IPC: G03G15/16 ,  G03G15/00

Abstract: An image forming apparatus includes an image bearing member, an image forming portion, a transfer member, an applying portion, and an executing portion configured to execute an output operation for forming and outputting a chart formed on a recording material on which a plurality of test images are transferred by applying a plurality of voltages to the transfer member by the applying portion. The executing portion changes a change width per level of the test voltage so that the change width is a first change width in a case that a material of the recording material on which the chart is formed is a first material and so that the change width is a second change width different from the first change width in a case that the material of the recording material is a second material different from the first material.