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1. 发明申请

US20100129102A1 IMAGE FORMING APPARATUS AND METHOD FOR CONTROLLING SAME 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US20100129102A1
公开(公告)日：2010-05-27
申请号：US12618863
申请日：2009-11-16
申请人： Kensuke Fujihara , Tamotsu Shimizu , Ryota Maeda , Kouji Fujii , Tomoyuki Kikuta
发明人： Kensuke Fujihara , Tamotsu Shimizu , Ryota Maeda , Kouji Fujii , Tomoyuki Kikuta
IPC分类号： G03G15/06
CPC分类号： G03G15/065
摘要： An image forming apparatus includes: a photoconductive drum; a developing roller carrying toner; a DC voltage application portion outputting a DC voltage to be applied to the developing roller, and receiving a feedback voltage; an AC voltage application portion applying an AC voltage to be applied to the developing roller; a detection portion detecting occurrence of electric discharge; a first resistor portion generating a feedback voltage that is fed to the DC voltage application portion; a second resistor portion connected between the DC voltage application portion and the AC voltage application portion, and having a switching portion with which conducting on and off are switchable; and a control portion controlling the switching portion, at the time of printing, to bring the second resistor portion into a conducting state and, at the time of electric discharge detection, to bring the second resistor portion into a non-conducting state.
摘要翻译：图像形成装置包括：感光鼓; 承载墨粉的显影辊; 直流电压施加部，输出要施加到显影辊的直流电压，并接收反馈电压; 交流电压施加部分施加施加到显影辊上的交流电压; 检测发生放电的检测部; 产生馈送到DC电压施加部分的反馈电压的第一电阻器部分; 连接在所述直流电压施加部与所述交流电压施加部之间的第二电阻部，具有可切换开关的切换部; 以及控制部分，其在打印时控制所述切换部分，以使所述第二电阻器部分进入导通状态，并且在所述放电检测时，使所述第二电阻器部分处于非导通状态。

2. 发明授权

US08116647B2 Image forming apparatus and method for controlling same 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US08116647B2
公开(公告)日：2012-02-14
申请号：US12618863
申请日：2009-11-16
申请人： Kensuke Fujihara , Tamotsu Shimizu , Ryota Maeda , Kouji Fujii , Tomoyuki Kikuta
发明人： Kensuke Fujihara , Tamotsu Shimizu , Ryota Maeda , Kouji Fujii , Tomoyuki Kikuta
IPC分类号： G03G15/00 , G03G15/06 , G03G15/08 , G03G15/10
CPC分类号： G03G15/065
摘要： An image forming apparatus includes: a photoconductive drum; a developing roller carrying toner; a DC voltage application portion outputting a DC voltage to be applied to the developing roller, and receiving a feedback voltage; an AC voltage application portion applying an AC voltage to be applied to the developing roller; a detection portion detecting occurrence of electric discharge; a first resistor portion generating a feedback voltage that is fed to the DC voltage application portion; a second resistor portion connected between the DC voltage application portion and the AC voltage application portion, and having a switching portion with which conducting on and off are switchable; and a control portion controlling the switching portion, at the time of printing, to bring the second resistor portion into a conducting state and, at the time of electric discharge detection, to bring the second resistor portion into a non-conducting state.
摘要翻译：图像形成装置包括：感光鼓; 承载墨粉的显影辊; 直流电压施加部，输出要施加到显影辊的直流电压，并接收反馈电压; 交流电压施加部分施加施加到显影辊上的交流电压; 检测发生放电的检测部; 产生馈送到DC电压施加部分的反馈电压的第一电阻器部分; 连接在所述直流电压施加部与所述交流电压施加部之间的第二电阻部，具有可切换开关的切换部; 以及控制部分，其在打印时控制所述切换部分，以使所述第二电阻器部分进入导通状态，并且在所述放电检测时，使所述第二电阻器部分处于非导通状态。

3. 发明授权

US08478150B2 Image forming apparatus and method for controlling same 有权
标题翻译：图像形成装置及其控制方法
公开(公告)号：US08478150B2
公开(公告)日：2013-07-02
申请号：US12606291
申请日：2009-10-27
申请人： Kensuke Fujihara , Tamotsu Shimizu , Ryota Maeda , Koji Fujii
发明人： Kensuke Fujihara , Tamotsu Shimizu , Ryota Maeda , Koji Fujii
IPC分类号： G03G15/06
CPC分类号： G03G15/065
摘要： An image forming apparatus has: a photoconductive drum that rotates; a developing roller that carries toner to be charged and to which a first voltage application portion outputting an AC voltage is connected; a contact member that makes contact with the photoconductive drum to remove residual toner; a detection portion for detecting occurrence of electric discharge between the developing roller and the photoconductive drum; and a developing unit that feeds toner to the developing roller, that supports the developing roller opposite the photoconductive drum with a gap secured in between, and that feeds toner to the developing roller with prescribed timing and for a prescribed time during electric discharge detection.
摘要翻译：图像形成装置具有：旋转的感光鼓; 携带要充电的调色剂并且连接有输出交流电压的第一电压施加部分的显影辊; 接触构件，其与感光鼓接触以去除残留的调色剂; 用于检测显影辊和感光鼓之间的放电发生的检测部分; 以及显影单元，其将调色剂供给到显影辊，其以固定在其间的间隙支撑与感光鼓相对的显影辊，并且在放电检测期间以规定的时间将调色剂供给到显影辊并且在规定时间内供给调色剂。

4. 发明授权

US07979011B2 Image forming apparatus having a photoconductive drum 有权
标题翻译：具有感光鼓的图像形成装置
公开(公告)号：US07979011B2
公开(公告)日：2011-07-12
申请号：US12546845
申请日：2009-08-25
申请人： Kensuke Fujihara , Akane Tokushige , Tamotsu Shimizu , Ryota Maeda , Koji Fujii
发明人： Kensuke Fujihara , Akane Tokushige , Tamotsu Shimizu , Ryota Maeda , Koji Fujii
IPC分类号： G03G15/09
CPC分类号： G03G15/751 , G03G15/065 , G03G15/0813 , G03G2215/0634
摘要： An image forming apparatus that includes: a photoconductive drum; a developing roller that is arranged opposite the photoconductive drum and that carries toner; a detecting portion that detects an occurrence of electrical discharge between the developing roller and the photoconductive drum; a control portion that controls the apparatus, that receives an output of the detecting portion and then recognizes the occurrence of the electrical discharge; a direct voltage applying portion that is connected to the developing roller; and an alternating voltage applying portion is disclosed herein.
摘要翻译：一种图像形成装置，包括：感光鼓; 显影辊，其布置成与感光鼓相对并且承载调色剂; 检测部，其检测所述显影辊和所述感光鼓之间的放电的发生; 控制部，其控制所述装置，所述控制部接收所述检测部的输出，然后识别所述放电的发生; 连接到显影辊的直流施加部分; 并且本文公开了交流电压施加部分。

5. 发明申请

US20080160437A1 DEVELOPING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE FORMING METHOD 有权
标题翻译：开发设备，图像形成装置和图像形成方法
公开(公告)号：US20080160437A1
公开(公告)日：2008-07-03
申请号：US11954119
申请日：2007-12-11
申请人： Tamotsu Shimizu , Minoru Wada
发明人： Tamotsu Shimizu , Minoru Wada
IPC分类号： G03G13/04 , G03G15/08
CPC分类号： G03G15/0806 , G03G15/065
摘要： A developing device is provided to suppress image density unevenness by adjusting conditions of toner adhesion to an amorphous silicon photoconductor to a suitable range even when using both an amorphous silicon photoconductor and a nonmagnetic monocomponent toner and practicing development in a non-contact system. The developing device satisfies the relational expression: (f×1.5/θ)2>−1.576×10−2×q/m×(Vpp/Ds2)+31.9×106 where Ds (m) is a distance between the photoconductor and the toner carrier, f (Hz) is a frequency of an AC bias applied to the toner carrier, Vpp (V) is an amplitude of the AC bias, θ (−) is a ratio of a peripheral speed of the toner carrier to a peripheral speed of the amorphous silicon photoconductor, and q/m (C/kg) is a charge quantity per unit mass of the toner.
摘要翻译：提供了一种显影装置，即使使用非晶硅光电导体和非磁性单组分调色剂，并且在非接触式系统中实施显影时，通过将调色剂粘合到非晶硅光电导体的条件调节到适当的范围来抑制图像浓度不均匀。显影装置满足关系式：<？in-line-formula description =“In-line formula”end =“lead”？>（fx1.5 / theta）2 > - 1.576x10 < SUP> -2×q / m×（Vpp /Ds≥2）+ 31.9×10 6 <？in-line-formula description =“In-line Formulas” end =“tail”？>其中Ds（m）是感光体和调色剂载体之间的距离，f（Hz）是施加到调色剂载体上的AC偏压的频率，Vpp（V）是AC 偏置θ（ - ）是调色剂载体的圆周速度与非晶硅感光体的圆周速度的比率，q / m（C / kg）是调色剂的每单位质量的电荷量。

6. 发明授权

US5884131A Developing device which accomplishes development using the action of an alternating current field between a developer-carrying member and an image-carrying member 失效
标题翻译：使用显影剂承载构件和图像承载构件之间的交流场的动作来实现显影的显影装置
公开(公告)号：US5884131A
公开(公告)日：1999-03-16
申请号：US25145
申请日：1998-02-18
申请人： Tamotsu Shimizu , Yoshiyuki Iguchi , Yoshio Sakagawa
发明人： Tamotsu Shimizu , Yoshiyuki Iguchi , Yoshio Sakagawa
IPC分类号： G03G15/06 , G03G15/08
CPC分类号： G03G15/065
摘要： A developing device capable stable production of halftone image having excellent texture while maintaining suitable image density by utilizing an AC electric field between a developer-carrying member and an image-carrying member and providing a rest period wherein the AC electric field is not active so as to develop electrostatic latent image formed on the image carrying member.
摘要翻译：一种显影装置，能够通过利用显影剂承载构件和图像承载构件之间的交流电场并提供静电期，其中交流电场不起作用，能够稳定地生产具有优异结构的半色调图像，同时保持合适的图像浓度，以形成形成在图像承载构件上的静电潜像。

7. 发明授权

US5828936A Developing device 失效
标题翻译：开发设备
公开(公告)号：US5828936A
公开(公告)日：1998-10-27
申请号：US831330
申请日：1997-03-31
申请人： Tamotsu Shimizu , Eiji Gyotoku
发明人： Tamotsu Shimizu , Eiji Gyotoku
IPC分类号： G03G15/08 , G03G15/09
CPC分类号： G03G15/09 , G03G2215/0609
摘要： A developing device is provided with a magnetic member having a plurality of magnetic poles N and S within a developing sleeve that rotates to transport a developer to an image bearing member. The device also includes a regulating member, which is formed of magnetic material, and which is spaced from the developing sleeve in so that the surface of the regulating member that is located on the upstream side in the developer transport direction is positioned downstream in the developer transport direction from a point of peak perpendicular magnetic flux density of the opposing magnetic pole of a magnetic member near the position at which the regulating member faces the developing sleeve, and positioned upstream in the developer transport direction from a point of 1/2 the peak perpendicular magnetic flux density of the opposing magnetic pole.
摘要翻译：显影装置设置有在显影套筒内具有多个磁极N和S的磁性构件，该显影套筒旋转以将显影剂输送到图像承载构件。该装置还包括由磁性材料形成并与显影套筒隔开的调节构件，使得位于显影剂输送方向上游侧的调节构件的表面位于显影剂输送方向的下游从磁性构件的相对磁极的峰值垂直磁通密度点到调节构件面对显影套筒的位置附近的位置，并从位于显影剂输送方向的1/2位置的位置的传送方向相对磁极的垂直磁通密度。

8. 发明授权

US6136487A Developing method 失效
标题翻译：开发方法
公开(公告)号：US6136487A
公开(公告)日：2000-10-24
申请号：US818790
申请日：1997-03-14
申请人： Tamotsu Shimizu , Noboru Ito , Yoshio Sakagawa , Yoshiyuki Iguchi
发明人： Tamotsu Shimizu , Noboru Ito , Yoshio Sakagawa , Yoshiyuki Iguchi
IPC分类号： G03G13/09
CPC分类号： G03G13/09
摘要： In a developing method of exposing the surface of a charged image carrying member to form an electrostatic latent image on the surface of the image carrying member, while conveying a developer containing toners and carriers to a developing region opposite to the image carrying member having the electrostatic latent image formed thereon by a developer conveying member, and applying at least an AC voltage between the image carrying member and the developer conveying member in the developing region, to develop the electrostatic latent image formed on the image carrying member, the relationship among an initial surface potential V0 at the image carrying member, a surface potential Vir at an exposed portion of the image carrying member, a peak-to-peak value Vp-p of the AC voltage applied between the image carrying member and the developer conveying member in the developing region, and a distance Ds (mm) between the image carrying member and the developer conveying member in the developing region satisfies the following condition:.vertline.V0-Vir.vertline./(Vp-p/Ds)
摘要翻译：在使带电图像承载构件的表面露出以在图像承载构件的表面上形成静电潜像的显影方法中，同时将含有调色剂和载体的显影剂输送到与具有静电的图像承载构件相对的显影区域通过显影剂输送构件在其上形成的潜像，并且在显影区域中的图像承载构件和显影剂输送构件之间施加至少一个AC电压，以形成形成在图像承载构件上的静电潜像，初始图像承载构件的表面电位V0，图像承载构件的暴露部分的表面电位Vir，施加在图像承载构件和显影剂输送构件之间的AC电压的峰 - 峰值Vp-p 显影区域，以及图像承载部件和显影剂传送部件之间的距离Ds（mm）满足以下条件：| V0-Vir | /（Vp-p / Ds）<0.08（mm）

9. 发明授权

US6088563A Developing device and developing method with a specified impedance 有权
标题翻译：开发设备和具有指定阻抗的开发方法
公开(公告)号：US6088563A
公开(公告)日：2000-07-11
申请号：US347277
申请日：1999-07-06
申请人： Tamotsu Shimizu
发明人： Tamotsu Shimizu
IPC分类号： G03G13/09 , G03G15/08 , G03G15/09
CPC分类号： G03G15/0928 , G03G13/09 , G03G2215/0609
摘要： In a developing device and a developing method in which a developer containing toners and carriers is conveyed to a developing area opposite to an image carrying member with it being held on the surface of a developer carrying member, and the toners in the developer are supplied to the electrostatic latent image formed on the image carrying member upon exerting an electric field between the developer carrying member and the image carrying member, to perform development, an impedance Zs (.OMEGA./cm.sup.2) per unit area of the surface of said developer carrying member and an impedance Zc (.OMEGA./cm.sup.2) of said carriers satisfy the condition of 1.8.times.10.sup.5 .ltoreq.Zs.multidot.Zc.ltoreq.2.1.times.10.sup.9.
摘要翻译：在显影装置和显影方法中，其中将含有调色剂和载体的显影剂输送到与图像承载构件相对的显影区域，并将其保持在显影剂承载构件的表面上，并将显影剂中的调色剂供应至在显影剂承载构件和图像承载构件之间施加电场时形成在图像承载构件上的静电潜像，以显影，所述显影剂承载构件的表面的每单位面积的阻抗Zs（OMEGA / cm 2）和所述载流子的阻抗Zc（OMEGA / cm 2）满足1.8×105×Zs×Zc≤2.1×109的条件。

10. 发明授权

US5385801A Method of developing electrostatic latent image 失效
标题翻译：静电潜像显影方法
公开(公告)号：US5385801A
公开(公告)日：1995-01-31
申请号：US109741
申请日：1993-08-20
申请人： Yoshihisa Terasaka , Junji Ohtani , Junji Machida , Tamotsu Shimizu , Hiroshi Murasaki , Hiroshi Mizuno
发明人： Yoshihisa Terasaka , Junji Ohtani , Junji Machida , Tamotsu Shimizu , Hiroshi Murasaki , Hiroshi Mizuno
IPC分类号： G03G9/08 , G03G9/113 , G03G13/09
CPC分类号： B82Y15/00 , G03G13/09 , G03G9/0819 , G03G9/1131
摘要： This invention relates to a method of developing electrostatic latent images which comprises the steps of;mixing a developer including toners having a mean particle size of 3 to 20 .mu.m and resin-coated carriers with a large number of pores having a pore size distribution of 0.001 to 3 .mu.m and a mean pore size of 0.1 to 0.5 .mu.m on a surface thereof;applying said developer onto a developing sleeve made of nonmagnetic material and arranged oppositely to an electrostatic latent image-retaining member with a minute gap therebetween;forming a magnetic brush of the developer by the magnetic force of a magnet member having plural poles in the circumferential direction thereof, said magnet member fixedly arranged within the developing sleeve;conveying the developer by a rotation of the developing sleeve to a developing zone where the electrostatic latent image-retaining member is arranged oppositely to the developing sleeve; anddeveloping electrostatic latent images by the toners which are held on the developing sleeve.
摘要翻译：本发明涉及一种静电潜像显影方法，包括以下步骤：混合平均粒度为3〜20μm的调色剂的显影剂和孔径分布为0.001〜3μm，平均孔径为0.1〜0.5μm的树脂被覆载体，其表面; 将所述显影剂施加到由非磁性材料制成的显影套筒上并且与静电潜像保持构件相对地设置，其间具有微小的间隙; 通过在圆周方向上具有多个磁极的磁性构件的磁力来形成显影剂的磁刷，所述磁体构件固定地布置在显影套筒内; 通过显影套筒的旋转将显影剂输送到静电潜像保持部件与显影套筒相对布置的显影区域; 并通过保持在显影套筒上的调色剂显影静电潜像。

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