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1. 发明申请

US20230082217A1 IMAGE FORMING APPARATUS 有权
公开(公告)号：US20230082217A1
公开(公告)日：2023-03-16
申请号：US17930334
申请日：2022-09-07
申请人： CANON KABUSHIKI KAISHA
发明人： Keisuke Ishizumi , Shinji Katagiri , Koji An
IPC分类号： G03G15/16
摘要： An image forming apparatus includes an image bearing member, an intermediate transfer belt, and a contact member. The intermediate transfer belt includes a base layer, a surface layer formed on an outside of the base layer, and an inner surface layer formed on an inner side of the base layer. A position at which the contact member and the intermediate transfer belt contact is arranged on a downstream side of the intermediate transfer belt in a rotation direction of the intermediate transfer belt. Rv>Rs1 and Rs2>Rs1, and Rs2/Rv≤40 are satisfied where Rv(Ω) is a volume resistance value of the intermediate transfer belt in a thickness direction, Rs1(Ω) is a first surface resistance value of the inner surface layer side in a surface direction, and Rs2(Ω) is a second surface resistance value on the surface layer side in a surface direction.

2. 发明授权

US11327429B2 Image-forming apparatus with a durable contact member that abuts against a belt 有权
公开(公告)号：US11327429B2
公开(公告)日：2022-05-10
申请号：US17211415
申请日：2021-03-24
申请人： CANON KABUSHIKI KAISHA
发明人： Shohei Ishio , Keisuke Ishizumi , Shinji Katagiri
IPC分类号： G03G15/16 , G03G21/00
摘要： A surface roughness Rz of an outer peripheral surface of an intermediate transfer belt is 0.05 μm or more, and toner contains toner base particles and an organosilicon polymer on the surface of the toner base particles. After residual toner on the intermediate transfer belt is collected by a blade into a belt cleaning device, the blade has a coating layer on its surface facing the intermediate transfer belt, the coating layer containing the organosilicon polymer.

3. 发明授权

US10948844B2 Color image forming apparatus 有权
公开(公告)号：US10948844B2
公开(公告)日：2021-03-16
申请号：US16446395
申请日：2019-06-19
申请人： CANON KABUSHIKI KAISHA
发明人： Kiyoto Toyoizumi , Masaru Shimura , Shinsuke Kobayashi , Hideo Nanataki , Shinji Katagiri , Yasunari Watanabe , Hideaki Hasegawa , Masahiro Tambo
IPC分类号： G03G15/04 , G03G15/043 , G03G15/047 , G03G15/32 , B41J2/44 , B41J2/47
摘要： A controller which causes a light emitting element to continuously perform minute emission for a plurality of dots in a level in which toner is not attached to a non-image section on an image bearing member is provided. The controller controls a first driving current for an image section and controls a second driving current used to perform the minute emission by the light emitting element in the non-image section several times in one job. In the image section, a driving current obtained by adding the first driving current to the second driving current is supplied so that the light emitting element emits light.

4. 发明申请

US20190094740A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20190094740A1
公开(公告)日：2019-03-28
申请号：US16135410
申请日：2018-09-19
申请人： CANON KABUSHIKI KAISHA
发明人： Takayuki Tanaka , Shinji Katagiri , Eiji Akasaka
IPC分类号： G03G15/02
CPC分类号： G03G15/0225 , G03G15/0189 , G03G15/0258 , G03G2221/0005
摘要： An image forming apparatus includes: first and second image bearing members; first and second charging members; first and second developing members; a transfer member configured to sequentially transfer toner images from the first and second image bearing members to a transfer-receiving member; and a control portion configured to, at a timing determined based on information relating to the toner image formed on the first image bearing member, perform a cleaning operation of decreasing toner that adheres to the second charging member at a time of non-image formation.

5. 发明申请

US20180149993A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180149993A1
公开(公告)日：2018-05-31
申请号：US15816818
申请日：2017-11-17
申请人： CANON KABUSHIKI KAISHA
发明人： Shuichi Tetsuno , Shinji Katagiri , Takayuki Tanaka , Tsuguhiro Yoshida , Takahiro Ikeda
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G15/0208 , G03G15/0283 , G03G21/0064
摘要： In a case where a collection mode in which a exposure unit forms a first potential on a photosensitive member and a developing unit collects discharging toner discharged from the developing unit to a position where the first potential is formed is executed, a potential forming unit forms, on an intermediate transfer member, a potential same as a normal charging polarity of toner and an absolute value greater than an absolute value of the first potential, and a charging power supply applies, to a charging member, a voltage having a polarity same as the normal charging polarity and an absolute value greater than an absolute value of the first potential.

6. 发明申请

US20180032001A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20180032001A1
公开(公告)日：2018-02-01
申请号：US15663425
申请日：2017-07-28
申请人： CANON KABUSHIKI KAISHA
发明人： Tsuguhiro Yoshida , Masaru Shimura , Shinji Katagiri , Eiichi Hamana , Takahiro Ikeda , Takayuki Tanaka , Shuichi Tetsuno
IPC分类号： G03G15/01
CPC分类号： G03G15/161 , G03G15/0131 , G03G15/1615 , G03G15/162 , G03G15/2053 , G03G15/5054 , G03G2215/0106 , G03G2215/0132 , G03G2215/1623 , G03G2215/1695
摘要： An intermediate transfer belt includes a base layer that has ionic conductivity and is a thickest layer out of multiple layers making up the intermediate transfer belt with respect to the thickness direction of the intermediate transfer belt, and an inner layer having electronic conductivity and a lower electrical resistance than the base layer.

7. 发明申请

US20160320727A1 IMAGE FORMING APPARATUS 审中-公开
公开(公告)号：US20160320727A1
公开(公告)日：2016-11-03
申请号：US15207180
申请日：2016-07-11
申请人： CANON KABUSHIKI KAISHA
发明人： Shinji Katagiri , Yuji Kawaguchi , Masaru Ohno , Tsuguhiro Yoshida , Takeo Kawanami , Taro Minobe , Masaru Shimura
IPC分类号： G03G15/16
CPC分类号： G03G15/1675 , G03G15/1605 , G03G15/161 , G03G15/1615 , G03G15/1665
摘要： A voltage maintenance element is connected to a contact member that contacts a primary transfer surface area of an intermediate transfer belt to which toner images are transferred from a plurality of image carriers between stretch members, in such a way as to prevent the electric potential of the intermediate transfer belt from varying between respective stations.

8. 发明授权

US09395655B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09395655B2
公开(公告)日：2016-07-19
申请号：US14962054
申请日：2015-12-08
申请人： CANON KABUSHIKI KAISHA
发明人： Shuichi Tetsuno , Shinji Katagiri , Masaru Ohno
IPC分类号： G03G15/16
CPC分类号： G03G15/6558
摘要： An image forming apparatus includes a resistor in a sheet shape configured to ground a sensor member electrically; a first contact member configured to form a current path between the resistor and the sensor member; and a second contact member configured to form a current path between the resistor and an electrical ground portion. A first contact portion and a second contact portion are arranged so as not to overlap in a thickness direction of the resistor.
摘要翻译：图像形成装置包括：电阻器，其被构造成电传感器构件接地; 第一接触构件，其构造成在所述电阻器和所述传感器构件之间形成电流路径; 以及第二接触构件，其构造成在所述电阻器和电接地部分之间形成电流路径。第一接触部分和第二接触部分被布置成不在电阻器的厚度方向上重叠。

9. 发明申请

US20150286164A1 IMAGE FORMING APPARATUS 审中-公开
标题翻译：图像形成装置
公开(公告)号：US20150286164A1
公开(公告)日：2015-10-08
申请号：US14674093
申请日：2015-03-31
申请人： CANON KABUSHIKI KAISHA
发明人： Shinji Katagiri , Shuichi Tetsuno , Masaru Ohno , Satoshi Takami
IPC分类号： G03G15/16
CPC分类号： G03G15/16 , G03G15/1645 , G03G15/1675 , G03G15/80
摘要： In an image forming apparatus, a current supply member comes into contact with a belt at a position different from a position of the transfer section in a rotational direction of the belt, and a control unit performs constant current control on the current flowing through the current supply member by setting a predetermined value to a target current value, and can change a first state in which a part of the current supplied to the current supply member flows to a ground side via a constant voltage element, and a second state in which the current supplied to the current supply member does not flow to the ground side via the constant voltage element, by maintaining the constant current control by the predetermined value.
摘要翻译：在图像形成装置中，电流供给部件在带的旋转方向上与传送部的位置不同的位置处与皮带接触，并且控制单元对流过电流的电流进行恒定电流控制通过将预定值设定为目标电流值，并且可以改变提供给电流供应部件的电流的一部分经由恒压元件流到接地侧的第一状态和第二状态，其中，通过将恒定电流控制保持预定值，经由恒压元件供给电流供给部件的电流不会流到接地侧。

10. 发明授权

US09081354B2 Image forming apparatus 有权
标题翻译：图像形成装置
公开(公告)号：US09081354B2
公开(公告)日：2015-07-14
申请号：US13897692
申请日：2013-05-20
申请人： CANON KABUSHIKI KAISHA
发明人： Masaru Ohno , Shinji Katagiri , Yuji Kawaguchi
IPC分类号： G03G21/00 , G03G15/16
CPC分类号： G03G21/0047 , G03G15/161 , G03G2215/0132
摘要： A high-voltage power source can change a set value of a current to be supplied to an electroconductive brush from a first set current that has been set when the image formation has been started, to a second set current smaller than the first set current, at a previously set timing after the image formation for a recording material has been started. An absolute value of a potential difference between potentials of a photosensitive drum and an intermediate transfer belt, when a secondary transfer residual toner that has been charged by the electroconductive brush to which the second set current has been supplied is positioned in a primary transfer portion, is not larger than an absolute value of a potential difference which is shown when a toner image formed on the photosensitive drum is primarily transferred in the primary transfer portion.
摘要翻译：高电压电源可以从在图像形成开始时设定的第一设定电流向小于第一设定电流的第二设定电流改变要提供给导电刷的电流的设定值，在开始记录材料的图像形成之后的预先设定的时刻。当已经被提供了第二设定电流的导电刷被充电的二次转印残留调色剂位于一次转印部分时，感光鼓和中间转印带的电位之间的电位差的绝对值位于第一转印部分，不大于在感光鼓上形成的调色剂图像主要传送到一次转印部分时所示的电位差的绝对值。

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