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公开(公告)号：US20230195026A1
公开(公告)日：2023-06-22
申请号：US18081910
申请日：2022-12-15
发明人： Takayuki Kanazawa , Nobuo Oshima , Takayoshi Kihara , Kuniaki Tamagaki , Shuhei Tokiwa , Taichi Sato
CPC分类号： G03G21/0064 , G03G15/0225 , G03G15/168 , G03G2221/0005 , G03G2215/022
摘要： An image forming apparatus includes a rotatable image bearing member, a developing member, a transfer member, and a brush contacting a surface of the image bearing member in a contact portion downstream of a transfer portion and upstream of a developing portion with respect to a rotational direction of the image bearing member. The toner which is not transferred onto a toner image receiving member is collected by the developing member. In a charging series, the toner is positioned on the same side as a normal charge polarity of the toner relative to the brush. In the contact portion, a maximum value of a contact pressure of 0.7 gf/mm2 or more and 3.5 gf/mm2 or less, a maximum contact area ratio is 18% or more and 74% or less, and a Clark-Evans index of the brush is 1 or more.
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公开(公告)号：US10108108B2
公开(公告)日：2018-10-23
申请号：US15473264
申请日：2017-03-29
发明人： Hiroyuki Seki , Takayoshi Kihara
IPC分类号： G03G15/08
摘要： A regulation member includes an opposed surface and a contact surface in a portion corresponding to an image forming area. The opposed surface is opposed to a developer bearing member. The contact surface protrudes from the opposed surface and has a height different from that of the opposed surface. An end seal seals a gap between a frame body, the developer bearing member, and the regulation member. The regulation member further includes an area not having the contact surface between the image forming area and a sealing area in which the regulation member and the end seal overlap. In the sealing area, a step between the opposed surface and the contact surface has a height of greater than or equal to 0 mm and not greater than 0.10 mm.
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公开(公告)号：US20180046109A1
公开(公告)日：2018-02-15
申请号：US15670226
申请日：2017-08-07
IPC分类号： B41J2/385
CPC分类号： G03G15/043 , G03G15/5037
摘要： An image forming apparatus includes a control unit configured to change, to a light quantity different from a plurality of reference light quantities, a light quantity per unit area of a surface of an electrical charge retention layer of a photosensitive member when an exposure unit exposes the surface in correspondence with a plurality of gradation levels, based on a plurality of exposure potentials corresponding to the plurality of gradation levels which is acquired by exposing with the exposure unit the surface with each of the plurality of reference light quantities corresponding to the plurality of gradation levels, and measuring with the measurement unit the plurality of exposure potentials of the photosensitive member which is formed by the exposure with the plurality of reference light quantities.
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公开(公告)号：US20130279934A1
公开(公告)日：2013-10-24
申请号：US13860707
申请日：2013-04-11
IPC分类号： G03G15/00
CPC分类号： G03G21/10 , G03G15/161 , G03G15/166 , G03G2215/0132
摘要： An image forming apparatus including: image forming stations each including: a photosensitive drum; a charger configured to charge the drum; a transfer device configured to transfer a developer image on the drum onto an intermediate transfer member; and a cleaner configured to remove developer from the drum; an exposure device configured to expose the drum to form a latent image; the intermediate transfer member; a memory storing information on the drum; and a controller configured to control at least one of the charger, transfer device, and exposure device in the station based on the information in the memory to provide a predetermined potential difference between the drum and the transfer device to form an electric field therebetween in a reverse direction to that in an image formation in order to move the developer from the intermediate transfer member to the drum to collect the developer by the cleaner.
摘要翻译： 一种图像形成装置，包括：图像形成站，每个图像形成站包括：感光鼓; 充电器，其构造成对所述鼓进行充电; 传送装置，其构造成将所述滚筒上的显影剂图像转印到中间转印部件上; 以及清洁器，其构造成从所述滚筒中除去显影剂; 曝光装置，被配置为暴露所述滚筒以形成潜像; 中间转印部件; 一个存储在滚筒上的信息的存储器; 以及控制器，其被配置为基于所述存储器中的信息来控制所述站中的所述充电器，传送装置和曝光装置中的至少一个，以在所述滚筒和所述传送装置之间提供预定的电位差，以在其间形成电场 与图像形成中的方向相反，以便将显影剂从中间转印部件移动到滚筒，以通过清洁器收集显影剂。
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公开(公告)号：US20240085846A1
公开(公告)日：2024-03-14
申请号：US18512282
申请日：2023-11-17
发明人： Takayuki Kanazawa , Nobuo Oshima , Takayoshi Kihara , Kuniaki Tamagaki , Shuhei Tokiwa , Taichi Sato
CPC分类号： G03G21/0064 , G03G15/0225 , G03G15/168 , G03G21/0005 , G03G21/007 , G03G21/169 , G03G21/0035 , G03G2215/022 , G03G2221/0005 , G03G2221/0089 , G03G2221/1618 , G03G2221/1627
摘要： An image forming apparatus includes a rotatable image bearing member, a developing member, a transfer member, and a brush contacting a surface of the image bearing member in a contact portion downstream of a transfer portion and upstream of a developing portion with respect to a rotational direction of the image bearing member. The toner which is not transferred onto a toner image receiving member is collected by the developing member. In a charging series, the toner is positioned on the same side as a normal charge polarity of the toner relative to the brush. In the contact portion, a maximum value of a contact pressure of 0.7 gf/mm2 or more and 3.5 gf/mm2 or less, a maximum contact area ratio is 18% or more and 74% or less, and a Clark-Evans index of the brush is 1 or more.
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公开(公告)号：US10073382B2
公开(公告)日：2018-09-11
申请号：US15264020
申请日：2016-09-13
发明人： Takayoshi Kihara , Yusaku Iwasawa
IPC分类号： G03G15/16
CPC分类号： G03G15/161 , G03G2215/1661
摘要： An image forming apparatus includes: a transfer member that secondarily transfers a developer image primarily transferred to a intermediate transfer medium, to a recording medium; a charging member that charges residual developer remaining on the intermediate transfer medium after the developer image is secondarily transferred from the intermediate transfer medium to the recording medium; and a storage portion that stores information on a image bearing member. A bias applied to the charging member is changed based on the information when the residual developer charged by the charging member is collected by being transferred from the intermediate transfer medium to the image bearing member.
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公开(公告)号：US20170097585A1
公开(公告)日：2017-04-06
申请号：US15281397
申请日：2016-09-30
IPC分类号： G03G15/02
CPC分类号： G03G15/0266 , G03G15/0275 , G03G15/55 , G03G2215/00071
摘要： An image forming apparatus includes: an acquisition portion that acquires, based on a current value detected by a detection unit, a discharge start voltage value between a photosensitive body and a charging member, in a voltage value of a voltage applied to the charging member, the discharge start voltage value being acquired from at least one of a plurality of measurement regions set by dividing an image forming region of the photosensitive body, in which an electrostatic image is formed, into a plurality of regions in a longitudinal direction orthogonal to a recording material conveyance direction; and a control portion that performs unevenness suppression control to reduce unevenness, in the longitudinal direction, of density of a developer image transferred onto the recording material based on the discharge start voltage value.
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公开(公告)号：US09042744B2
公开(公告)日：2015-05-26
申请号：US13895417
申请日：2013-05-16
IPC分类号： G03G15/00
CPC分类号： G03G15/553 , G03G15/5037 , G03G15/5079 , G03G15/55
摘要： An image forming apparatus includes a rotatable photosensitive member, an exposure unit for exposing a surface of the photosensitive member to light, and a detecting portion for detecting a lifetime of the photosensitive member on the basis of a thickness of a charge transporting layer of the photosensitive member and an amount of the light received by the charge transporting layer of the photosensitive member.
摘要翻译： 图像形成装置包括可旋转感光构件，用于将感光构件的表面曝光的曝光单元和用于基于感光体的电荷输送层的厚度来检测感光构件的寿命的检测部分 构件和由感光构件的电荷输送层接收的光量。
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公开(公告)号：US20140003829A1
公开(公告)日：2014-01-02
申请号：US13866919
申请日：2013-04-19
IPC分类号： G03G15/01
CPC分类号： G03G15/0189 , G03G15/50
摘要： The image forming apparatus can switch between a color mode, in which an image is formed by sequentially transferring the color toner images formed by developing members in an overlapping manner, and a mono mode, in which an image is formed by using one developing member. The developing member used in the mono mode develops the toner image to be transferred secondly or thereafter in the color mode, the exposure device exposes a non-image portion where the toner image is not formed on the surface of the image carrier at an exposure amount smaller than an exposure amount for an image portion where the toner image is formed, and, in the mono mode, the exposure amount at which the exposure device exposes the non-image portion of the image carrier in the case the image is formed in the mono mode is smaller than the color mode.
摘要翻译： 图像形成装置可以通过以重叠的方式顺序地转印由显影构件形成的彩色调色剂图像和通过使用一个显影构件形成图像的单声道模式来在其中形成图像的彩色模式之间切换。 在单声道模式下使用的显影元件在彩色模式下显影要转印的调色剂图像，曝光装置以曝光量曝光图像载体表面上没有形成调色剂图像的非图像部分 小于形成调色剂图像的图像部分的曝光量，并且在单声道模式中，在图像形成的情况下，曝光装置暴露图像载体的非图像部分的曝光量 单声道模式小于彩色模式。
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公开(公告)号：US20130308964A1
公开(公告)日：2013-11-21
申请号：US13895417
申请日：2013-05-16
IPC分类号： G03G15/00
CPC分类号： G03G15/553 , G03G15/5037 , G03G15/5079 , G03G15/55
摘要： An image forming apparatus includes: a rotatable photosensitive member; an exposure unit for exposing a surface of the photosensitive member to light; and a detecting portion for detecting a lifetime of the photosensitive member on the basis of first information on a thickness of a charge transporting layer of the photosensitive member and second information on an amount of the light received by the charge transporting layer of the photosensitive member.
摘要翻译： 图像形成装置包括：可旋转的感光构件; 用于将感光构件的表面曝光的曝光单元; 以及检测部，其基于关于感光构件的电荷输送层的厚度的第一信息和关于由感光构件的电荷输送层接收的光的量的第二信息来检测感光构件的寿命。
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