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公开(公告)号：US12032322B2
公开(公告)日：2024-07-09
申请号：US18080992
申请日：2022-12-14
发明人： Toshihiko Takayama , Shuichi Tetsuno , Jun Hara , Mikihiko Hamada , Kazuhiro Funatani , Shinsuke Kobayashi
CPC分类号： G03G21/0082 , G03G15/0233 , G03G21/0035 , G03G21/0064 , G03G21/08 , G03G2221/001 , G03G2221/0042 , G03G2221/0063 , G03G2221/0089
摘要： An image forming apparatus including an image bearing member, a charging member, a developing roller, a transfer roller, and a brush configured to be brought into contact with a surface of the image bearing member on a side downstream of a transfer portion and upstream of a charging portion in a rotation direction of the image bearing member and in which, wherein, after the transfer of a developer image onto a transferred member, a developer remaining on the surface of the image bearing member is collected by the developing roller, the brush is disposed such that, in a cross section perpendicular to a rotation axis of the image bearing member, a contact region of the surface of the image bearing member in contact with the brush overlaps a virtual line containing the rotation axis of the image bearing member and extending upward from the rotation axis in a vertical direction.
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公开(公告)号：US20180074452A1
公开(公告)日：2018-03-15
申请号：US15684986
申请日：2017-08-24
IPC分类号： G03G21/00
CPC分类号： G03G21/0029 , G03G21/0011 , G03G21/0082 , G03G21/1666 , G03G21/1821 , G03G2215/0409 , G03G2221/0057 , G03G2221/1636
摘要： A process cartridge for an image forming apparatus includes an image bearer; a developer bearer to supply a latent image on the image bearer with toner and develop the latent image, a cleaner to clean residual toner on the image bearer after a transfer process, and an elastically deformable remover to contact an end portion of the image bearer in an axial direction of the image bearer. The remover includes an inclined part extending in the axial direction of the image bearer from an upstream side to a downstream side in a direction of movement of the image bearer. The inclined part includes a contact portion to contact the image bearer. The contact portion of the inclined part forms a gradient in the axial direction.
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公开(公告)号：US20240302785A1
公开(公告)日：2024-09-12
申请号：US18668511
申请日：2024-05-20
发明人： TOSHIHIKO TAKAYAMA , SHUICHI TETSUNO , JUN HARA , MIKIHIKO HAMADA , KAZUHIRO FUNATANI , SHINSUKE KOBAYASHI
CPC分类号： G03G21/0082 , G03G15/0233 , G03G21/0035 , G03G21/0064 , G03G21/08 , G03G2221/001 , G03G2221/0042 , G03G2221/0063 , G03G2221/0089
摘要： An image forming apparatus including an image bearing member, a charging member, a developing roller, a transfer roller, and a brush configured to be brought into contact with a surface of the image bearing member on a side downstream of a transfer portion and upstream of a charging portion in a rotation direction of the image bearing member and in which, wherein, after the transfer of a developer image onto a transferred member, a developer remaining on the surface of the image bearing member is collected by the developing roller, the brush is disposed such that, in a cross section perpendicular to a rotation axis of the image bearing member, a contact region of the surface of the image bearing member in contact with the brush overlaps a virtual line containing the rotation axis of the image bearing member and extending upward from the rotation axis in a vertical direction.
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公开(公告)号：US20240019796A1
公开(公告)日：2024-01-18
申请号：US18476841
申请日：2023-09-28
CPC分类号： G03G15/0815 , G03G21/0035 , G03G21/0082 , G03G21/0064 , G03G2221/0073 , G03G2221/0042 , G03G2221/0015 , G03G15/5037
摘要： An image forming apparatus includes a photosensitive member, a charging member, an exposing device, a developing device, a transfer member, a brush, a voltage applying portion, and a control portion controlling a surface potential of the photosensitive member at the brush contacting position. When a value of subtracting a value of the surface potential of the photosensitive member in the brush contacting position from a value of the brush voltage is defined as a contacting position potential difference, the control portion controls the surface potential of the photosensitive member in the brush contacting position so that the contacting position potential difference is changed from a first potential difference to a second potential difference in a predetermined direction which is either one of an increasing direction or a decreasing direction, and then the contacting position potential difference is changed from the second potential difference to a third potential difference in the predetermined direction.
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公开(公告)号：US12117757B2
公开(公告)日：2024-10-15
申请号：US18053977
申请日：2022-11-09
IPC分类号： G03G21/00
CPC分类号： G03G21/0058 , G03G21/0064 , G03G21/0082 , G03G2221/0026 , G03G2221/0042 , G03G2221/0063
摘要： An image forming apparatus includes a photosensitive drum, a development roller configured to supply developer to the photosensitive drum, a transfer roller configured to transfer a developer image formed on the photosensitive drum to a recording material, and a cleaning roller being in contact with the photosensitive drum, configured to clean a part of the recording material adhered to the photosensitive drum, wherein the diameter of the transfer roller is greater than the diameter of the development roller and the diameter of the cleaning roller is greater than the diameter of the development roller.
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公开(公告)号：US12099315B2
公开(公告)日：2024-09-24
申请号：US18476841
申请日：2023-09-28
CPC分类号： G03G15/0815 , G03G21/0035 , G03G21/0064 , G03G21/0082 , G03G15/5004 , G03G15/5037 , G03G2221/0015 , G03G2221/0042 , G03G2221/0073
摘要： An image forming apparatus includes a photosensitive member, a charging member, an exposing device, a developing device, a transfer member, a brush, a voltage applying portion, and a control portion controlling a surface potential of the photosensitive member at the brush contacting position. When a value of subtracting a value of the surface potential of the photosensitive member in the brush contacting position from a value of the brush voltage is defined as a contacting position potential difference, the control portion controls the surface potential of the photosensitive member in the brush contacting position so that the contacting position potential difference is changed from a first potential difference to a second potential difference in a predetermined direction which is either one of an increasing direction or a decreasing direction, and then the contacting position potential difference is changed from the second potential difference to a third potential difference in the predetermined direction.
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公开(公告)号：US11815827B2
公开(公告)日：2023-11-14
申请号：US18081943
申请日：2022-12-15
CPC分类号： G03G15/0815 , G03G21/0035 , G03G21/0064 , G03G21/0082 , G03G15/5004 , G03G15/5037 , G03G2221/0015 , G03G2221/0042 , G03G2221/0073
摘要： An image forming apparatus includes a photosensitive member, a charging member, an exposing device, a developing device, a transfer member, a brush, a voltage applying portion, and a control portion controlling a surface potential of the photosensitive member at the brush contacting position. When a value of subtracting a value of the surface potential of the photosensitive member in the brush contacting position from a value of the brush voltage is defined as a contacting position potential difference, the control portion controls the surface potential of the photosensitive member in the brush contacting position so that the contacting position potential difference is changed from a first potential difference to a second potential difference in a predetermined direction which is either one of an increasing direction or a decreasing direction, and then the contacting position potential difference is changed from the second potential difference to a third potential difference in the predetermined direction.
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公开(公告)号：US20180032024A1
公开(公告)日：2018-02-01
申请号：US15626191
申请日：2017-06-19
发明人： Kazuya YAMASHITA , Hiroaki OHASHI
IPC分类号： G03G21/00
CPC分类号： G03G21/10 , G03G15/0815 , G03G15/0844 , G03G15/0896 , G03G21/0052 , G03G21/0076 , G03G21/0082 , G03G21/105 , G03G21/12 , G03G21/206 , G03G2221/0021 , G03G2221/0089 , G03G2221/0094
摘要： A toner collecting device includes an exhaust path and a catching installation. Through the exhaust path, air containing a floating toner is passed. The catching installation is configured to catch the floating toner from the air passing through the exhaust path. The catching installation is formed by overlapping a plural of filters each having a different mesh size.
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公开(公告)号：US20130108322A1
公开(公告)日：2013-05-02
申请号：US13625181
申请日：2012-09-24
申请人： Takahiro Nishimoto
发明人： Takahiro Nishimoto
IPC分类号： G03G21/00
CPC分类号： G03G21/0064 , G03G21/0076 , G03G21/0082
摘要： A process unit is capable of avoiding backset of residual toner from the collecting unit to an image carrier even after collection of the residual toner on the image carrier at the collecting unit. A first collecting member is positioned downstream of a transfer unit and upstream of a charger in rotational direction of an image carrier. The first collecting member is configured to allow a developing agent remaining on the image carrier to pass therethrough but to collect a paper dust on the image carrier. A second collecting member is positioned downstream of the first collecting member and upstream of the charger, and configured to allow a developing agent remaining on the image carrier to pass therethrough but to collect a paper dust on the image carrier. The control device controls the first collecting member to be applied with a polarity the same as that of the charger.
摘要翻译： 即使在收集单元上的图像载体上收集剩余调色剂之后，处理单元也能够避免残留调色剂从收集单元向图像载体的背景。 第一收集构件位于转印单元的下游并且在图像载体的旋转方向上位于充电器的上游。 第一收集构件被配置为允许残留在图像载体上的显影剂通过，但是在图像载体上收集纸灰尘。 第二收集构件位于第一收集构件的下游并且位于充电器的上游，并且被配置为允许残留在图像载体上的显影剂通过其中，而是收集图像载体上的纸灰尘。 控制装置以与充电器的极性相同的方式控制第一收集构件的施加。
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