公开(公告)号：US11334014B2

公开(公告)日：2022-05-17

申请号：US17211208

申请日：2021-03-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasutaka Yagi ,  Ken Yokoyama

IPC: G03G15/00 ,  G03G15/16

Abstract: An image forming apparatus includes an image forming portion configured to form a toner image on an image bearing member; an intermediate transfer member onto which the toner image is transferred from the image bearing member in a primary transfer portion to form an image portion; and a control portion configured to perform control to form a toner image for lubrication in a non-image portion of the intermediate transfer member onto which the toner image for a print image based on image information is not to be formed. In a state in which the non-image portion is to be formed downstream of the image portion in a movement direction of the surface of the intermediate transfer member, the control portion performs control to change a size of a region for forming the toner image for lubrication based on the image information.

公开(公告)号：US20210302885A1

公开(公告)日：2021-09-30

申请号：US17211208

申请日：2021-03-24

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasutaka Yagi ,  Ken Yokoyama

IPC: G03G15/00 ,  G03G15/16

Abstract: An image forming apparatus including: an image forming portion configured to form a toner image on an image bearing member; an intermediate transfer member onto which the toner image is transferred from the image bearing member in a primary transfer portion to form an image portion; and a control portion configured to perform control to form a toner image for lubrication in a non-image portion of the intermediate transfer member onto which the toner image for a print image based on image information is not to be formed. In a state in which the non-image portion is to be formed downstream of the image portion in a movement direction of the surface of the intermediate transfer member, the control portion performs control to change a size of a region for forming the toner image for lubrication based on the image information.

公开(公告)号：US09606477B2

公开(公告)日：2017-03-28

申请号：US15077742

申请日：2016-03-22

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasutaka Yagi ,  Kazuhiro Funatani ,  Tetsuichiro Fujimoto ,  Hiroyuki Seki ,  Masanori Asai ,  Shuji Saito

IPC: G03G15/08 ,  G03G15/16 ,  G03G21/00

CPC classification number: G03G15/161 ,  G03G21/0011 ,  G03G2215/0132 ,  G03G2221/001 ,  G03G2221/0073

Abstract: An image forming apparatus including a cleaning member having a belt cleaning blade and a conductive brush. A value of a charging current that is generated when charging residual toner with the conductive brush is smaller when a color mode is executed compared to that when a monochrome mode is executed.

公开(公告)号：US09477191B2

公开(公告)日：2016-10-25

申请号：US15001489

申请日：2016-01-20

Applicant: CANON KABUSHIKI KAISHA

Inventor： Noriaki Sato ,  Yasutaka Yagi ,  Hiroshi Kataoka ,  Eiji Uekawa ,  Keisuke Mochizuki ,  Shuji Saito ,  Naoto Tsuchihashi

IPC: G03G15/20

CPC classification number: G03G15/2064 ,  G03G15/2053

Abstract: A fixing device includes: a cylindrical film; a nip forming member; and a back-up member for forming a nip. The nip forming member includes a projected portion. The projection amount of the projected portion is smaller in an end portion region positioned at an end portion of the projected portion with respect to a generatrix direction of the film than in a central region positioned at a central portion of the projected portion with respect to the generatrix direction, at least a part of the end portion region being inside a feeding region of a maximum-sized recording material usable in the fixing device. With respect to the recording material feeding direction, the width of the part of the projected portion inside the nip is broader in the end portion region than in the central region.

Abstract translation: 定影装置包括：圆柱形膜; 辊隙形成构件; 以及用于形成辊隙的支撑构件。 辊隙形成构件包括突出部分。 突出部分的突出量在位于突出部分的端部相对于膜的母线方向的端部区域中小于在位于突出部分的中心部分的中心区域相对于 母线方向，端部区域的至少一部分位于可用于定影装置的最大尺寸记录材料的进给区域的内部。 相对于记录材料供给方向，辊隙内的突出部分的部分的宽度在端部区域比在中心区域宽。

公开(公告)号：US09052644B2

公开(公告)日：2015-06-09

申请号：US14107228

申请日：2013-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasutaka Yagi ,  Taku Kanai ,  Takaaki Tsuruya ,  Hiroyuki Seki

IPC: G03G15/01 ,  G03G15/16

CPC classification number: G03G15/1605 ,  G03G15/162

Abstract: An image forming apparatus includes an image bearing member, an intermediate transfer member, and a secondary transfer member having a plurality of protrusions which come into contact with the intermediate transfer member. A superficial layer of the intermediate transfer member includes a superficial layer and a plurality of insulating particles buried in the superficial layer so as to be partially exposed from she superficial layer. In the case where the insulating particles are present in a contact region in which the protrusions are brought into contact with the intermediate transfer member, a portion in which the protrusions are brought into direct contact with the superficial layer is present in the contact region.

Abstract translation: 图像形成装置包括图像承载部件，中间转印部件和具有与中间转印部件接触的多个突起的二次转印部件。 中间转印部件的表层包括表层和表面层中的多个绝缘颗粒，以便从其表面层部分露出。 在绝缘颗粒存在于突起与中间转印部件接触的接触区域中的情况下，在接触区域中存在突起与表层直接接触的部分。

公开(公告)号：US20210382416A1

公开(公告)日：2021-12-09

申请号：US17342134

申请日：2021-06-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yusaku Iwasawa ,  Yasutaka Yagi ,  Ken Yokoyama ,  Hiroyuki Seki

IPC: G03G15/16

Abstract: An image forming apparatus includes image bearing members, an intermediary transfer member having ion conductivity, primary transfer members, a first voltage applying portion, a secondary transfer member, a second voltage applying portion, and a controller. On the basis of image information, the controller controls a transfer voltage applied to the secondary transfer member so as to be different between a first voltage when a first region in which a coverage indicating a ratio occupied by an image region per predetermined area is a first coverage passes through the secondary transfer portion and a second voltage when a second region in which the coverage is a second coverage larger than the first coverage passes through the secondary transfer portion. The controller controls a change amount of the first voltage with respect to the second voltage so as to be different between a first mode and a second mode.

公开(公告)号：US20200026209A1

公开(公告)日：2020-01-23

申请号：US16509886

申请日：2019-07-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasutaka Yagi ,  Yuhei Terui ,  Noriyoshi Umeda ,  Tomonori Matsunaga ,  Shohei Kototani ,  Masamichi Sato

IPC: G03G9/08 ,  G03G9/093 ,  G03G9/09 ,  G03G21/18

Abstract: A image-forming apparatus includes a plurality of process cartridges each having a toner and an image bearing member, and has an intermediate transfer member, wherein the toner comprises a toner particle that contains a toner base particle and a prescribed organosilicon polymer on the surface of the toner base particle, and the organosilicon polymer forms protruded portions on the surface of the toner base particle, for the protrusions having a protrusion height H from 40 nm to 300 nm, the numerical proportion P(D/w) of protruded portions having a ratio of the protrusion diameter D to the protrusion width w in a prescribed range is at least 70 number %, and one of the plurality of process cartridges has a carbon black-containing black toner, and the weight-average particle diameter of this black toner is smaller than that of the toner present in the other process cartridges.

公开(公告)号：US20180210374A1

公开(公告)日：2018-07-26

申请号：US15873947

申请日：2018-01-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： Yasutaka Yagi

IPC: G03G15/01 ,  G03G5/02 ,  G03G5/147 ,  G03G5/07 ,  G03G5/14

CPC classification number: G03G15/162 ,  G03G5/0208 ,  G03G5/075 ,  G03G5/142 ,  G03G5/14734 ,  G03G5/14795 ,  G03G2215/00957

Abstract: The image forming apparatus includes a photosensitive member configured to bear a toner image, the photosensitive member having a surface layer containing acrylic resin, and an intermediate transfer member configured to secondarily transfer the toner image having been primarily transferred from the photosensitive member onto a transfer material, the intermediate transfer member having a surface layer containing acrylic resin and having a ten-point average roughness Rz set within a range of 0.35 μm≤Rz≤1.5 μm.

公开(公告)号：US09075352B2

公开(公告)日：2015-07-07

申请号：US14096060

申请日：2013-12-04

Applicant: CANON KABUSHIKI KAISHA

Inventor： Hiroyuki Seki ,  Takaaki Tsuruya ,  Yasutaka Yagi

IPC: G03G15/00 ,  G03G21/00 ,  G03G15/16

CPC classification number: G03G15/161 ,  G03G21/0041

Abstract: An image forming apparatus includes a removal unit configured to remove developer that was not transferred to a recording material; and a control unit configured to control an image forming unit for supplying developer to the removal unit. The image forming unit is configured to form first developer image, and second developer image whose length in the sub-scanning direction is longer than that of the first developer image, and whose amount of developer per unit area is less than or equal to that of the first developer image, and the control unit is further configured to, based on a predetermined relationship between the recording material type and the supplying image, select a supplying image formed by the image forming unit before or after the developer image transferred to the recording material.

Abstract translation: 图像形成装置包括：去除单元，其构造成去除未转印到记录材料上的显影剂; 以及控制单元，被配置为控制用于向所述移除单元供应显影剂的图像形成单元。 图像形成单元被配置为形成第一显影剂图像，并且副扫描方向上的长度比第一显影剂图像的长度长的第二显影剂图像，并且其每单位面积的显影剂的量小于或等于 第一显影剂图像和控制单元还被配置为基于记录材料类型和供应图像之间的预定关系，在显影剂图像转印到记录材料之前或之后，选择由图像形成单元形成的供应图像 。

公开(公告)号：US20150177663A1

公开(公告)日：2015-06-25

申请号：US14572632

申请日：2014-12-16

Applicant: CANON KABUSHIKI KAISHA

Inventor： Teruhiko Namiki ,  Shuhei Watanabe ,  Yasutaka Yagi ,  Tsutomu Ishida ,  Tadashi Okanishi ,  Motoyasu Muramatsu

IPC: G03G15/00 ,  G01N29/04

CPC classification number: G03G15/5029 ,  G01B17/02 ,  G01N29/11 ,  G01N29/27 ,  G01N2223/642 ,  G01N2291/0237 ,  G01N2291/02818 ,  G01N2291/102 ,  G03G15/6594 ,  G03G15/80 ,  G03G2215/00637 ,  G03G2215/00742 ,  G03G2215/00751

Abstract: A grammage detection sensor according to an aspect of the present invention includes a transmission unit configured to transmit an ultrasonic wave, a reception unit configured to receive the ultrasonic wave transmitted from the transmission unit, and a control unit configured to detect a grammage of a recording material, when a plurality of recording materials are continuously conveyed between the transmission unit and the reception unit, on the basis of a first ultrasonic wave received by the reception unit after the ultrasonic wave is transmitted by the transmission unit between a preceding recording material and a recording material following the preceding recording material, and a second ultrasonic wave received via a recording material by the reception unit after the ultrasonic wave is transmitted by the transmission unit.

Abstract translation: 根据本发明的一个方面的克重检测传感器包括：发送单元，被配置为发送超声波;接收单元，被配置为接收从所述发送单元发送的超声波;以及控制单元，被配置为检测记录的克重 材料，当在所述传输单元和所述接收单元之间连续地传送多个记录材料时，基于由所述传输单元在前一记录材料和所述接收单元之间的所述超声波传输之后由所述接收单元接收的第一超声波 在前述记录材料之后的记录材料和经由传送单元发送超声波之后由接收单元经由记录材料接收的第二超声波。