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    • 2. 发明专利
    • Electrifying member, and process cartridge and image forming apparatus using electrifying member
    • 电子会员,以及使用电子会员的处理盒和图像形成装置
    • JP2006133527A
    • 2006-05-25
    • JP2004322808
    • 2004-11-05
    • Fuji Xerox Co LtdSuzuka Fuji Xerox Co Ltd富士ゼロックス株式会社鈴鹿富士ゼロックス株式会社
    • MIURA HIROYUKIROKUTAN MINORUKODA TAKANARIWATANABE TATSUJIHATTORI TAKAHIKO
    • G03G15/02F16C13/00
    • PROBLEM TO BE SOLVED: To provide an electrifying member which combines electrifying ability with leak resistance performance, and causes no defective image quality even when it is stored in a state where it comes into contact with a photoreceptor.
      SOLUTION: The electrifying member includes at least base material and an outermost layer provided on the base material and coming into contact with a body to be electrified, and electrifies the body to be electrified by coming into contact with the body to be electrified in a state where voltage is applied, and the electrifying member is characterized in that two kinds of carbon black (carbon black (a) and carbon black (b)) satisfying following specific surface area and pH are at least contained in the outermost layer. The carbon black (a) is set so that the specific surface area is ≤400m
      2 /g and pH is ≤4.0, and the carbon black (b) is set so that the specific surface area is >400m
      2 /g and pH is ≤4.0.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种将通电能力与防漏性能相结合的带电构件,即使在与感光体接触的状态下存储时也不会产生有缺陷的图像质量。 解决方案:充电构件至少包括基材和最外层,其设置在基材上并与要充电的本体接触,并且通过与被电化的身体接触而带电通电的身体 在施加电压的状态下,通电部件的特征在于,在最外层中至少包含满足以下比表面积和pH的两种炭黑(炭黑(a)和炭黑(b))。 将炭黑(a)设定为比表面积为≤400m2 / SP> / g,pH为≤4.0,设定炭黑(b)使比表面积> 400m 2 / SP / g,pH值≤4.0。 版权所有(C)2006,JPO&NCIPI
    • 3. 发明专利
    • Charging roll
    • 充电滚筒
    • JP2014153455A
    • 2014-08-25
    • JP2013021199
    • 2013-02-06
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • TSUDO SATOSHIHAGIWARA TAKUOROKUTAN MINORUOMORI MASAO
    • G03G15/02F16C13/00
    • G03G15/0233
    • PROBLEM TO BE SOLVED: To provide a charging roll capable of achieving both low power and high image quality through suppression of white spots.SOLUTION: A charging roll includes a conductive core body, and a resistance elastic layer and a surface layer formed on the conductive core body. When an impedance of the resistance elastic layer and an impedance of the surface layer are measured at an environmental temperature of 10°C and humidity of 15%RH, within a range of an AC voltage frequency of an image forming apparatus to be used, |ZE/(ZE+ZS)|≤0.81 is satisfied, wherein the impedance of the resistance elastic layer is ZE, and the impedance of the surface layer is ZS.
    • 要解决的问题:提供一种能够通过抑制白斑来实现低功率和高图像质量的充电辊。解决方案:充电辊包括导电芯体,电阻弹性层和形成在导电上的表面层 核心体。 在10℃的环境温度和15%RH的湿度下测量电阻弹性层的阻抗和表面层的阻抗,在使用的图像形成装置的交流电压频率的范围内, ZE /(ZE + ZS)|≤0.81,其中电阻弹性层的阻抗为ZE,表面层的阻抗为ZS。
    • 5. 发明专利
    • Conductive roll, image forming apparatus equipped with conductive roll, and method and device for manufacturing conductive roll
    • 导电辊,带有导电辊的图像形成装置,以及用于制造导电辊的方法和装置
    • JP2009223252A
    • 2009-10-01
    • JP2008070678
    • 2008-03-19
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • ROKUTAN MINORU
    • G03G15/00F16C13/00G03G15/02
    • PROBLEM TO BE SOLVED: To provide a conductive roll which suppresses filming of an electrifying member and/or a photoreceptor and improves distortion characteristic of the electrifying member so that a stripe defect can be suppressed, and to provide an image forming apparatus equipped with the conductive roll, and a method and a device for manufacturing the conductive roll. SOLUTION: The conductive roll 100 has a conductive elastic layer 10 concentrically on an outer periphery of a layer forming portion 20a of a core bar 20 that is a conductive shaft center, and electrifies a body to be electrified while coming into contact with the body to be electrified in such a state that voltage is applied thereto. In the conductive roll 100, hardness of the conductive elastic layer 10 has hardness gradient g 1 in a thickness direction T, and the hardness is high on the conductive shaft center side of the conductive roll 100 and becomes lower toward a surface side of the conductive roll 100. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供抑制带电构件和/或感光体的成膜的导电性辊,提高带电构件的变形特性,从而可以抑制条纹缺陷,并提供装备有图像形成装置的图像形成装置 导电辊,以及用于制造导电辊的方法和装置。 导电辊100具有导电性弹性层10,同心地位于作为导电轴中心的芯棒20的层形成部分20a的外周上,并且在与电气接触的同时带电通电 在施加电压的状态下通电的主体。 在导电辊100中,导电性弹性层10的硬度在厚度方向T上具有硬度梯度g 1 ,并且在导电性辊100的导电轴中心侧的硬度变高 朝向导电辊100的表面侧。版权所有(C)2010,JPO&INPIT
    • 6. 发明专利
    • Electrifying device and image forming apparatus
    • 电气设备和图像形成装置
    • JP2007219087A
    • 2007-08-30
    • JP2006038262
    • 2006-02-15
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • MIURA HIROYUKIROKUTAN MINORUSUGA TAKANORIKAMIJO YUKIKO
    • G03G15/02F16C13/00
    • G03G15/0233
    • PROBLEM TO BE SOLVED: To provide an electrifying device which can mitigate stress caused by electrifying an image carrier surface to reduce the wear of the image carrier and is excellent in uniform electrifying property, and to provide an image forming apparatus using the electrifying device and capable of extending its service life. SOLUTION: The electrifying device is provided with an electrifying roll and a voltage applying means applying voltage which is superposed DC voltage and AC voltage to the electrifying roll. The electrifying device electrifies the image carrier by allowing the electrifying roll to abut on the image carrier. The AC current (Iac) flowing to the electrifying roll fulfills a formula (1): Iac/I(inflection)≤1.2 (I(inflection) expresses inflection point of Iac) and the electrifying roll fulfills the conditions of (a) deflection in an outer diameter is 0.1mm or less, (b) resistance is 9.0 log Ω or less and (c) variation in resistance is 0.5 log Ω or less in the electrifying device and the image forming apparatus uses the electrifying device. COPYRIGHT: (C)2007,JPO&INPIT
    • 解决问题的方案:提供一种通电装置,其能够减轻图像载体表面带电引起的应力,以降低图像载体的磨损,并且均匀带电性能优异,并且提供使用通电的图像形成装置 设备,并能延长其使用寿命。

      解决方案:充电装置设有充电辊和施加电压的电压施加装置,其将叠加的直流电压和交流电压施加到充电辊。 充电装置通过允许充电辊抵靠在图像载体上来使图像载体通电。 流入充电辊的交流电流(Iac)满足公式(1):Iac / I(拐点)≤1.2(I(拐点)表示Iac的拐点),充电辊满足条件(a) 外径为0.1mm以下,(b)电阻为9.0logΩ以下,(c)带电装置的电阻变化为0.5logΩ以下,图像形成装置使用充电装置。 版权所有(C)2007,JPO&INPIT

    • 8. 发明专利
    • Conductive elastic member and image forming apparatus
    • 导电弹性构件和图像形成装置
    • JP2009053600A
    • 2009-03-12
    • JP2007222435
    • 2007-08-29
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • MIURA HIROYUKIROKUTAN MINORU
    • G03G15/00F16C13/00
    • PROBLEM TO BE SOLVED: To provide a conductive elastic member with little change in shape or electrical property even with passage of time and to provide an image forming apparatus with the conductive elastic member. SOLUTION: (1) The conductive elastic member has a surface of free-cutting steel plating processed and at least an elastic layer is formed on a conductive supporting body with dynamic micro hardness of 400 or more. (2) The conductive elastic member has a diamond like carbon layer and the elastic layer formed in this order on the conductive supporting body. (3) The conductive elastic member has a tetrahedral amorphous carbon layer and the elastic layer formed in this order on the conductive supporting body. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:即使随着时间的推移,也可以提供形状或电性能几乎没有变化的导电弹性构件,并且提供具有导电弹性构件的图像形成装置。 解决方案:(1)导电性弹性部件具有加工了自由切割钢板的表面,至少在动态显微硬度为400以上的导电性支承体上形成弹性层。 (2)导电性弹性部件具有类金刚石碳层,弹性层依次形成在导电性支承体上。 (3)导电性弹性构件具有四面体非晶碳层,弹性层依次形成在导电性支撑体上。 版权所有(C)2009,JPO&INPIT
    • 9. 发明专利
    • Electrifying member and image forming apparatus equipped therewith
    • 电子会员和图像形成装置
    • JP2009053566A
    • 2009-03-12
    • JP2007222045
    • 2007-08-29
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • ROKUTAN MINORU
    • G03G15/02
    • PROBLEM TO BE SOLVED: To provide an electrifying member which causes neither uneven wear at the end of a photoreceptor nor a black line defect caused by current leak even when it is used for a long time.
      SOLUTION: The electrifying member 15 comes in contact with a latent image carrier to electrify the surface thereof, wherein the width of an electrification feasible area orthogonal to a conveying direction of a recording medium is set to be larger than the maximum printable width of the recording medium orthogonal to the conveying direction of the recording medium. Furthermore, the electrifying member 15 has a conductive core bar 20, an adhesive layer formed in an area equivalent to the electrification feasible area on the outer circumference of the conductive core bar 20, and a conductive elastic layer 26 provided on the outer circumference of the adhesive layer. The adhesive layer comprises a low-resistance adhesive layer 24 formed in an area equivalent to the maximum printable width of the recording medium on the outer circumference of the conductive core bar 20, and high-resistance adhesive layers 22a and 22b formed in respective outside areas at both ends of the low-resistance adhesive layer 24 in the electrification feasible area.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种在感光体的末端既不引起不均匀磨损也不会由于电流泄漏引起的黑线缺陷而导致的即将长时间使用的带电部件。 解决方案:充电构件15与潜像载体接触以使其表面带电,其中与记录介质的传送方向正交的充电可行区域的宽度被设定为大于最大可打印宽度 与记录介质的传送方向正交的记录介质。 此外,带电构件15具有导电芯棒20,在与导电芯棒20的外周上的带电可行区域等效的区域中形成的粘合层和设置在导电芯棒20的外周上的导电性弹性层26 粘合剂层。 粘合剂层包括形成在与导电芯棒20的外周上的记录介质的最大可印刷宽度相当的区域中的低电阻粘合剂层24,以及形成在各个外部区域中的高电阻粘合剂层22a和22b 在电气化可行区域的低电阻粘合剂层24的两端。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Image forming apparatus
    • 图像形成装置
    • JP2014153488A
    • 2014-08-25
    • JP2013021952
    • 2013-02-07
    • Fuji Xerox Co Ltd富士ゼロックス株式会社
    • HAGIWARA TAKUOSHIMOHIRA YOSHIKIKAWASE YUKOTSUDO SATOSHIROKUTAN MINORUSUGIURA AKIYA
    • G03G15/02G03G5/04G03G9/08G03G15/00
    • G03G15/0216G03G15/0233
    • PROBLEM TO BE SOLVED: To provide an image forming apparatus which is capable of suppressing white spots occurring in an initial image after the start of operation and preventing image defects due to contamination of a charging member after the lapse of time.SOLUTION: An image forming apparatus includes: a charging roller which has, on a resistance elastic layer, a surface layer having surface roughness Rz of 3 to 6 μm in an initial stage after the start of operation and has an absolute value of an impedance ratio of 0.81 or lower at a frequency of 800 to 3,000 Hz and has the surface roughness Rz of the surface layer reduced by an amount ΔRz of 0.1 to 4 μm after the lapse of a prescribed time; and a photoreceptor drum which has a film thickness D of 20 to 40 μm in the initial stage after the start of operation and has the film thickness D reduced by an amount ΔD of 5 to 25 μm after the lapse of a prescribed time. In this case, expression of 0.005≤ΔRz/ΔD≤0.8 is satisfied, and the impedance ratio is expressed by ZE/(ZE+ZS) where ZE represents impedance of the resistance elastic layer and ZS represents impedance of the surface layer.
    • 要解决的问题:提供一种图像形成装置,其能够抑制在开始操作之后的初始图像中出现的白点,并且防止在时间流逝之后由于充电部件的污染造成的图像缺陷。解决方案:图像形成 装置包括:充电辊,其在电阻弹性层上具有在开始操作之后的初始阶段具有3至6μm的表面粗糙度Rz的表面层,并且具有0.81以下的阻抗比的绝对值 频率为800〜3000Hz,表面层的表面粗糙度Rz在经过规定时间后减少量为Dgr; Rz为0.1〜4μm; 以及在开始操作之后的初始阶段具有20至40μm的膜厚度D的感光鼓,并且在经过规定时间之后,膜厚度D减小了5至25μm的量Dgr; D。 在这种情况下,满足0.005≤&Dgr; Rz /&Dgr;D≤0.8的表达式,阻抗比由ZE /(ZE + ZS)表示,其中ZE表示电阻弹性层的阻抗,ZS表示表面的阻抗 层。