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1.发明申请公开(公告)号：US20200133161A1
公开(公告)日：2020-04-30
申请号：US16661288
申请日：2019-10-23
IPC分类号： G03G15/08
摘要： A developing apparatus, includes: a developer bearing member configured to bear a developer; and a regulating member that is disposed in contact with a surface of the developer bearing member, and configured to regulate the developer borne on the developer bearing member. On the surface of the developer bearing member, a conductive portion having a first surface roughness and first electric resistance, and a dielectric portion having a second surface roughness, which is smaller than the first surface roughness, and second electric resistance, which is larger than the first electric resistance, are disposed. In a case where the developer borne on the developer bearing member is charged by friction with the regulating member, a charging polarity of the dielectric portion is the same polarity as a charging polarity of the developer.
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公开(公告)号：US20200050126A1
公开(公告)日：2020-02-13
申请号：US16534133
申请日：2019-08-07
发明人： Koji An , Kazunari Hagiwara , Takuya Kitamura , Takashi Hiramatsu , Jun Miura
摘要： A process cartridge includes a developer carrier including a dielectric portion and a conductive portion on a surface thereof, a regulation member, and an image carrier disposed so as to come into contact with the developer carrier. The developer carrier and the image carrier are rotationally driven such that a surface of the developer carrier and a surface of the image carrier move at linear velocities different from each other at a contact portion, and the developer remaining on the image carrier after the developer image is transferred from the image carrier, is collected by the developer carrier at the contact portion.
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公开(公告)号：US20190278198A1
公开(公告)日：2019-09-12
申请号：US16295967
申请日：2019-03-07
发明人： Jun Miura , Takuya Kitamura , Kazunari Hagiwara , Takashi Hiramatsu , Koji An
IPC分类号： G03G15/08
摘要： When a new development device is mounted, a control unit of an image forming apparatus identifies a development device type. When an identification result corresponds to a first development device containing a first amount of developer, an agitation member operates in a first mode. When the identification result corresponds to a second development device containing a second amount of developer higher than the first amount, the agitation member operates in a second mode. A second operation amount of the agitation member in the second mode is higher than a first operation amount of the agitation member in the first mode. A developer containing chamber of the development device is provided with a discharge opening from which the developer is discharged. The operations in the first and second modes are performed after a sealing member sealing the discharge opening is removed and also before a normal image forming process is executed.
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公开(公告)号：US20170090330A1
公开(公告)日：2017-03-30
申请号：US15251038
申请日：2016-08-30
发明人： Takuya Kitamura
IPC分类号： G03G15/02
CPC分类号： G03G15/0225 , G03G15/0258 , G03G15/0266
摘要： Provided is an image forming apparatus including: an image bearing member; a charging member configured to charge the image bearing member; a voltage applying device configured to apply a voltage to the charging member; and a control unit configured to control the voltage applying device so as to perform a cleaning mode for applying an AC voltage to the charging member with the voltage applying device while moving a surface of the image bearing member during non-image formation of the image forming apparatus, wherein a period of time during which the cleaning mode is performed includes a first time-period during which a first AC voltage is applied and a second time-period during which a second AC voltage is applied, and a period of the first AC voltage is different from a period of the second AC voltage.
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公开(公告)号：US09128411B2
公开(公告)日：2015-09-08
申请号：US14290756
申请日：2014-05-29
发明人： Minoru Nakamura , Takuya Kitamura , Kouki Yano , Yuji Kawaguchi
IPC分类号： G03G15/08
CPC分类号： G03G15/0812 , G03G15/08 , G03G15/081 , G03G15/0813 , G03G15/0818
摘要： A developing device includes a developing chamber provided with a developing roller that conveys toner to a developing area, and a toner regulating member that is in contact with a surface of the developing roller; and a toner container that contains the toner. An opening that allows the developing chamber and the toner container to communicate with each other is closed by a seal member that prevents the toner in the toner container from flowing into the developing chamber, and the seal member is removable from the opening. Spherical resin particles are provided at least in a contact portion between the developing roller and the toner regulating member. A Martens hardness of the spherical resin particles is 0.5 N/mm2 or higher and 45 N/mm2 or lower, and a restoring elastic power of the spherical resin particles is 70% or higher.
摘要翻译： 显影装置包括：显影室，其具有将调色剂输送到显影区域的显影辊;以及与显影辊的表面接触的调色剂调节部件; 和含有调色剂的调色剂容器。 允许显影室和调色剂容器彼此连通的开口由防止调色剂容器中的调色剂流入显影室的密封构件封闭，并且密封构件可从开口移除。 至少在显影辊和调色剂调节部件之间的接触部分中设置有球形树脂颗粒。 球形树脂颗粒的马氏硬度为0.5N / mm 2以上且45N / mm 2以下，球形树脂颗粒的恢复弹性功率为70％以上。
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公开(公告)号：US10935904B2
公开(公告)日：2021-03-02
申请号：US16295967
申请日：2019-03-07
发明人： Jun Miura , Takuya Kitamura , Kazunari Hagiwara , Takashi Hiramatsu , Koji An
IPC分类号： G03G15/08
摘要： When a new development device is mounted, a control unit of an image forming apparatus identifies a development device type. When an identification result corresponds to a first development device containing a first amount of developer, an agitation member operates in a first mode. When the identification result corresponds to a second development device containing a second amount of developer higher than the first amount, the agitation member operates in a second mode. A second operation amount of the agitation member in the second mode is higher than a first operation amount of the agitation member in the first mode. A developer containing chamber of the development device is provided with a discharge opening from which the developer is discharged. The operations in the first and second modes are performed after a sealing member sealing the discharge opening is removed and also before a normal image forming process is executed.
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公开(公告)号：US10444660B2
公开(公告)日：2019-10-15
申请号：US16155940
申请日：2018-10-10
发明人： Kazunari Hagiwara , Takaaki Shinkawa , Koji An , Takashi Mukai , Takuya Kitamura
摘要： A developing apparatus includes a developer carrying member, a developer container, and a regulating member to regulate the thickness of the developer. The regulating member includes a support member having one end fixed to the developer container and the other end free, with the support member extending in a direction opposite to the rotating direction of the developer carrying member, and a contact member to be fixed to the other end of the support member and to contact the developer carrying member. The contact member includes a contact curved surface along a peripheral surface of the developer carrying member, and an opposite surface to face the developer carrying member. The contact pressure of the contact curved surface applied to the developer carrying member decreases as a location on the developer carrying member approaches a downstream side in the rotating direction.
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公开(公告)号：US09880483B2
公开(公告)日：2018-01-30
申请号：US15251038
申请日：2016-08-30
发明人： Takuya Kitamura
IPC分类号： G03G15/02
CPC分类号： G03G15/0225 , G03G15/0258 , G03G15/0266
摘要： Provided is an image forming apparatus including: an image bearing member; a charging member configured to charge the image bearing member; a voltage applying device configured to apply a voltage to the charging member; and a control unit configured to control the voltage applying device so as to perform a cleaning mode for applying an AC voltage to the charging member with the voltage applying device while moving a surface of the image bearing member during non-image formation of the image forming apparatus, wherein a period of time during which the cleaning mode is performed includes a first time-period during which a first AC voltage is applied and a second time-period during which a second AC voltage is applied, and a period of the first AC voltage is different from a period of the second AC voltage.
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公开(公告)号：US09170525B2
公开(公告)日：2015-10-27
申请号：US14269462
申请日：2014-05-05
发明人： Motoki Adachi , Takuya Kitamura , Hideo Kihara , Kouki Yano , Yuta Isobe
IPC分类号： G03G15/08
CPC分类号： G03G15/0812
摘要： A developing device usable with an image forming apparatus includes a developer carrying member for carrying a developer, a developer accommodating portion for accommodating a developer, and a guiding member having an inclined surface contacting the developer carrying member. The inclined surface guides a developer to a contact portion where the inclined surface contacts the developer carrying member to cause the developer to be carried on the developer carrying member. A regulating member regulates an amount of the developer carried on the developer carrying member. An inclination angle of the inclined surface is in a range not less than an angle of rest of the developer and less than 90 degrees.
摘要翻译： 可用于图像形成装置的显影装置包括用于承载显影剂的显影剂承载构件，用于容纳显影剂的显影剂容纳部分和具有与显影剂承载构件接触的倾斜表面的引导构件。 倾斜表面将显影剂引导到倾斜表面接触显影剂承载构件的接触部分，以使显影剂承载在显影剂承载构件上。 调节构件调节承载在显影剂承载构件上的显影剂的量。 倾斜表面的倾斜角度不小于显影剂的静止角度并且小于90度。
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10.发明授权Image forming apparatus with control of charging voltage of photosensitive member 有权具有感光元件充电电压控制的图像形成装置公开(公告)号：US09104130B2
公开(公告)日：2015-08-11
申请号：US14085200
申请日：2013-11-20
IPC分类号： G03G15/02 , G03G15/043
CPC分类号： G03G15/0266
摘要： An image forming apparatus including: photosensitive members; charging devices to which a common charging power source applies a charging voltage to charge the photosensitive members; an exposure device configured to expose the photosensitive members; developing devices to form developer images on the photosensitive members; a transfer device to transfer the developer images onto a transfer medium; and a control portion configured to set a lower limit value of the charging voltage for each photosensitive member, apply the charging voltage having a magnitude not less than any lower limit value from the charging power source to the charging devices, control the output of the laser power for each photosensitive member individually, and set, based on the image density of the developer image transferred onto the transfer medium earlier, the lower limit value for a photosensitive member on which a developer image to be transferred onto the transfer medium later is formed.
摘要翻译： 一种图像形成装置，包括：感光构件; 充电装置，其中公共充电电源施加充电电压以对感光构件充电; 曝光装置，被配置为曝光感光构件; 显影装置以在感光构件上形成显影剂图像; 用于将显影剂图像转印到转印介质上的转印装置; 以及控制部，被配置为设定每个感光部件的充电电压的下限值，将来自充电电源的幅度不小于任何下限值的充电电压施加到充电装置，控制激光器的输出 并且基于更早转印到转印介质上的显影剂图像的图像浓度来设定其后转印到转印介质上的显影剂图像的感光部件的下限值。
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