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公开(公告)号：US20090311012A1
公开(公告)日：2009-12-17
申请号：US12405446
申请日：2009-03-17
申请人： Sayo Mabuchi , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera
发明人： Sayo Mabuchi , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera
IPC分类号： G03G15/08
CPC分类号： G03G15/0818 , G03G2215/0861
摘要： This invention relates to a developing device 18 for use in an image-forming apparatus comprising a developing roller 100 having a conductive base surface 19 which may be covered with a resin layer 17 layer comprising an ion conductive material and a silicone-modified urethane resin having an ether structure.
摘要翻译： 本发明涉及一种用于图像形成装置的显影装置18，其包括具有导电基底表面19的显影辊100，该导电基底表面19可以被包含离子导电材料的树脂层17层和具有硅氧烷改性的聚氨酯树脂 醚结构。
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公开(公告)号：US08112020B2
公开(公告)日：2012-02-07
申请号：US12405446
申请日：2009-03-17
申请人： Sayo Mabuchi , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera
发明人： Sayo Mabuchi , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera
IPC分类号： G03G15/08
CPC分类号： G03G15/0818 , G03G2215/0861
摘要： Embodiments relate to a developing device for use in an image-forming apparatus including a developing roller having a conductive base surface which may be covered with a resin layer containing an ion conductive material and a silicone-modified urethane resin having an ether structure. The resin layer may be a product of a crosslinking reaction of the silicone-modified urethane resin and the ion conductive material in the presence of a crosslinking agent and a crosslinking catalyst.
摘要翻译： 实施例涉及一种用于图像形成装置的显影装置，其包括具有导电基底表面的显影辊，该导电基底表面可被含有离子导电材料的树脂层和具有醚结构的硅氧烷改性聚氨酯树脂覆盖。 在交联剂和交联催化剂的存在下，树脂层可以是硅氧烷改性的聚氨酯树脂与离子导电材料的交联反应的产物。
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公开(公告)号：US20090154962A1
公开(公告)日：2009-06-18
申请号：US12331692
申请日：2008-12-10
申请人： Asami Kotera , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Sayo Uemura
发明人： Asami Kotera , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Sayo Uemura
IPC分类号： G03G15/09
CPC分类号： G03G15/0928 , G03G2215/0861
摘要： A developing device visualizing an electrostatic latent image previously formed on the surface of an image carrier as toner image, comprising: a developing roller placed at a position facing the image carrier, carrying a toner on the surface thereof, conveying the toner and flying the conveyed toner onto the surface of the image carrier; and a resin layer coated on the surface of the developing roller, wherein the absolute value of the difference in charge between the toners in the upper and lower layers of the toner layer formed on the developing roller as the toner carried on the developing roller is 6 μC/g or less.
摘要翻译： 一种将预先形成在图像载体的表面上的静电潜像可视化的显影装置作为调色剂图像，包括：显影辊，其设置在面向图像载体的位置，在其表面上承载调色剂，输送调色剂并使传送的 调色剂到图像载体的表面上; 以及涂覆在显影辊表面上的树脂层，其中在显影辊上承载的调色剂上形成在显影辊上的调色剂层的上层和下层中的调色剂之间的电荷差绝对值为6 muC / g以下。
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公开(公告)号：US08249489B2
公开(公告)日：2012-08-21
申请号：US13184262
申请日：2011-07-15
申请人： Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera , Sayo Uemura
发明人： Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera , Sayo Uemura
IPC分类号： G03G15/08
CPC分类号： G03G15/0818
摘要： A developing unit includes a developing roller which rotates about a rotational axis to supply toner to a photoreceptor, and a magnetic roller which forms a magnetic brush with a two-component developing agent having carrier and the toner and thereby forms a toner layer on the developing roller, the developing roller including: a cylindrical core portion which includes an electric conductor; a first resistive layer which covers a cylindrical surface of the core portion; a second resistive layer which covers the first resistive layer, and has electric-resistivity lower than that of the first resistive layer; and a current leakage control member which prevents leakage of electric current from the core portion toward the second resistive layer through an end of the developing roller along a direction of the rotational axis.
摘要翻译： 显影单元包括围绕旋转轴线旋转以向感光体供应调色剂的显影辊和形成具有载体的二组分显影剂和调色剂并由此在显影剂上形成调色剂层的磁刷的磁性辊 所述显影辊包括：包括电导体的圆柱形芯部; 覆盖所述芯部的圆筒面的第一电阻层; 第二电阻层，其覆盖所述第一电阻层，并且电阻率低于所述第一电阻层的电阻率; 以及电流泄漏控制构件，其防止电流从所述芯部朝向所述第二电阻层通过所述显影辊的端部沿着所述旋转轴线的方向泄漏。
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公开(公告)号：US07826782B2
公开(公告)日：2010-11-02
申请号：US12331692
申请日：2008-12-10
申请人： Asami Kotera , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Sayo Uemura
发明人： Asami Kotera , Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Sayo Uemura
IPC分类号： G03G15/09
CPC分类号： G03G15/0928 , G03G2215/0861
摘要： A developing device is provided for visualizing an electrostatic latent image previously formed on the surface of an image carrier as a toner image. The developing device has a developing roller placed at a position facing the image carrier, carrying a toner on the surface thereof, conveying the toner and flying the conveyed toner onto the surface of the image carrier; and a resin layer coated on the surface of the developing roller. The absolute value of the difference in charge between the toners in the upper and lower layers of the toner layer formed on the developing roller as the toner carried on the developing roller is 6 μC/g or less.
摘要翻译： 提供了一种显影装置，用于将预先形成在图像载体的表面上的静电潜像可视化为调色剂图像。 显影装置具有位于面向图像载体的位置的显影辊，在其表面上承载调色剂，输送调色剂并将所输送的调色剂飞行到图像载体的表面上; 以及涂覆在显影辊表面上的树脂层。 在显影辊上承载的调色剂上形成在显影辊上的调色剂层的上层和下层中的调色剂之间的电荷差的绝对值为6μC/ g以下。
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公开(公告)号：US08010025B2
公开(公告)日：2011-08-30
申请号：US12352094
申请日：2009-01-12
申请人： Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera , Sayo Uemura
发明人： Hiroyuki Hamakawa , Akihiro Watanabe , Masashi Fujishima , Hiroshi Yamazaki , Asami Kotera , Sayo Uemura
IPC分类号： G03G15/08
CPC分类号： G03G15/0818
摘要： A developing unit includes a developing roller which rotates about a rotational axis to supply toner to a photoreceptor, the developing roller including: a cylindrical core portion which includes an electric conductor; a first resistive layer which covers a cylindrical surface of the core portion; a second resistive layer which covers the first resistive layer, and has electric-resistivity lower than that of the first resistive layer; and a current leakage control member which prevents leakage of electric current from the core portion toward the second resistive layer through an end of the developing roller along a direction of the rotational axis.
摘要翻译： 显影单元包括显影辊，该显影辊围绕旋转轴线旋转以向感光体供应调色剂，所述显影辊包括：包括电导体的圆柱形芯部分; 覆盖所述芯部的圆筒面的第一电阻层; 第二电阻层，其覆盖所述第一电阻层，并且电阻率低于所述第一电阻层的电阻率; 以及电流泄漏控制构件，其防止电流从所述芯部朝向所述第二电阻层通过所述显影辊的端部沿着所述旋转轴线的方向泄漏。
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公开(公告)号：US08750765B2
公开(公告)日：2014-06-10
申请号：US12967336
申请日：2010-12-14
IPC分类号： G03G15/08
CPC分类号： G03G15/0839 , G03G15/0844 , G03G15/0877 , G03G15/0893 , G03G2215/0822 , G03G2215/083 , G03G2215/0833
摘要： Provided is a developing device including: a developing container including a developer replenishing port from which the developer is replenished, and a developer discharge port which is provided on a downstream side of one of the conveyance paths and from which surplus developer is discharged; and a discharge regulating portion provided to one of the plurality of stirring members which is arranged in the one of the conveyance paths, in which the discharge regulating portion includes a regulating member arranged so as to face the developer discharge port, for regulating movement of the developer to the developer discharge port side, and a decelerating conveyance member arranged between the helical blade and the regulating member, for partially reducing a conveying speed of the developer in the one of the conveyance paths.
摘要翻译： 提供了一种显影装置，包括：显影剂容器，其包括显影剂补充口，补充显影剂的显影剂;以及显影剂排出口，其设置在输送路径中的一个输送路径的下游侧，剩余的显影剂被排出; 以及设置在所述多个搅拌部件中的一个设置在所述输送路径中的一个的排出调节部，所述排出限制部包括配置成朝向所述显影剂排出口的调节部件， 显影剂到显影剂排出口侧，以及设置在螺旋叶片和调节构件之间的减速输送构件，用于部分地降低一个输送路径中的显影剂的输送速度。
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公开(公告)号：US20080298847A1
公开(公告)日：2008-12-04
申请号：US12127151
申请日：2008-05-27
申请人： Toyotsune Inoue , Takahisa Nakaue , Akihiro Watanabe , Masashi Fujishima , Shoichi Sakata , Yukihiro Mori
发明人： Toyotsune Inoue , Takahisa Nakaue , Akihiro Watanabe , Masashi Fujishima , Shoichi Sakata , Yukihiro Mori
IPC分类号： G03G15/09
CPC分类号： G03G15/095 , G03G15/0815
摘要： A developing device uses a two-component developer including at least carriers and toners. The toners are supplied to an image bearing member bearing an electrostatic latent image so that a toner image is developed from the electrostatic latent image. The developing device has a developing roller arranged to oppose the image bearing member; and a magnetic roller arranged to oppose the developing roller. The magnetic roller retains the two-component developer to supply toners to the developing roller. The developing roller and the magnetic roller are rotationally driven in directions to be opposite from one another at an opposed position, and a magnetic pole of the magnetic roller and a magnetic pole of the developing roller have magnetic polarities different from one another at the opposed position. A surface roughness of the magnetic roller is greater than a surface roughness of the developing roller.
摘要翻译： 显影装置使用包括至少载体和调色剂的双组分显影剂。 将调色剂供应到承载静电潜像的图像承载部件，使得调色剂图像从静电潜像显影。 显影装置具有布置成与图像承载部件相对的显影辊; 以及布置成与显影辊相对的磁辊。 磁性辊保持双组分显影剂以将调色剂供应到显影辊。 显影辊和磁性辊在相对位置上被相互旋转的方向旋转驱动，磁性辊的磁极和显影辊的磁极在相对位置处具有彼此不同的磁极性 。 磁辊的表面粗糙度大于显影辊的表面粗糙度。
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公开(公告)号：US20080232862A1
公开(公告)日：2008-09-25
申请号：US12051186
申请日：2008-03-19
申请人： Masashi Fujishima , Shoichi Sakata , Takahisa Nakaue , Toyotsune Inoue , Akihiro Watanabe , Yukihiro Mori
发明人： Masashi Fujishima , Shoichi Sakata , Takahisa Nakaue , Toyotsune Inoue , Akihiro Watanabe , Yukihiro Mori
IPC分类号： G03G15/08
CPC分类号： G03G15/0921 , G03G15/0818 , G03G2215/0609
摘要： An image forming apparatus has a photoconductive member, and a developing roller develops a latent image on the photoconductive member by a first alternating-current bias in the form of a rectangular wave. The following relationships are satisfied in calculating the duty ratio (D1) of the first alternating-current bias using an application period of voltage in a direction to transfer the toner from the developing roller towards the photoconductive member as a positive period: a CV value in the number particle size distribution of the toner is ≦25%, 4 μm≦Dt≦7 μm, 105 Ω·cm≦pv≦109 QΩcm, 0.4 μm≦Ra≦1.5 μm, and 35%≦D1≦75%. where Dt denotes the volume average particle diameter of the toner, pv denotes the intrinsic resistance value of a developing roller surface, Ra denotes the arithmetic average roughness of the developing roller surface.
摘要翻译： 图像形成装置具有感光体，并且显影辊通过矩形波形式的第一交流偏压在感光体上显影潜像。 在使用调色剂从显影辊向感光体传送调色剂的方向上，使用电压施加期间计算第一交流偏压的占空比（D 1）为以下关系：CV值 在调色剂的数量粒度分布为<= 25％，4μm<= Dt <=7μm，10±5cm -1 = 10 < > QOmegacm，0.4mg
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公开(公告)号：US20080226320A1
公开(公告)日：2008-09-18
申请号：US12042684
申请日：2008-03-05
申请人： Shoichi Sakata , Takahisa Nakaue , Toyotsune Inoue , Akihiro Watanabe , Masashi Fujishima , Yukihiro Mori
发明人： Shoichi Sakata , Takahisa Nakaue , Toyotsune Inoue , Akihiro Watanabe , Masashi Fujishima , Yukihiro Mori
IPC分类号： G03G15/06
CPC分类号： G03G15/065
摘要： A developing unit has a voltage-applicator (80) to apply a developing bias voltage to a developing roller (72). The voltage-applicator (80) applies the developing bias voltage for a first duration to apply an AC voltage having a rectangular waveform, and a second duration to stop applying the AC voltage. The AC voltage has a duty ratio of 50% or more in a direction for causing toner to develop an electrostatic latent image. The number of cycles of the AC voltage in the first duration is two or more, and the AC voltage has a voltage in a direction for pulling the toner back to the developing roller, just before transition to the second duration. The developing unit suppresses occurrence of image unevenness due to a fluctuation in developing gap. Thus, an image forming apparatus equipped with the developing unit forms a high-quality image while suppressing image unevenness.
摘要翻译： 显影单元具有向显影辊（72）施加显影偏压的电压施加器（80）。 电压施加器（80）施加显影偏压第一持续时间以施加具有矩形波形的交流电压和第二持续时间以停止施加AC电压。 AC电压在使调色剂显影静电潜像的方向上具有50％以上的占空比。 在第一持续时间内的交流电压的周期数为两个或更多个，并且在转换到第二持续时间之前，AC电压具有用于将调色剂拖回显影辊的方向上的电压。 显影单元抑制由于显影间隙的波动引起的图像不均匀的发生。 因此，配备有显影单元的图像形成装置在抑制图像不均匀的同时形成高质量图像。
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