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    • 2. 发明专利
    • Method for manufacturing conductive roller, conductive roller, and image forming apparatus
    • 制造导向滚子,导向滚子和图像形成装置的方法
    • JP2014164118A
    • 2014-09-08
    • JP2013034969
    • 2013-02-25
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • YABUSHITA SHUNICHIYAMAGUCHI TAKUYAYAMAMOTO MASABUMI
    • G03G15/00F16C13/00G03G15/02G03G15/08G03G15/16G03G21/10
    • PROBLEM TO BE SOLVED: To provide a method for manufacturing a conductive roller configured to prevent a foam cell diameter near an outer surface from being extremely reduced, to prevent image defect, and the conductive roller manufactured by the manufacturing method, and an image forming apparatus incorporating the conductive roller.SOLUTION: A manufacturing method includes a step of continuously extruding a rubber composition into a cylindrical shape from a nozzle 2 of a head of an extruder 3 under the condition of head pressure of 25 MPa or less, and continuously foaming and crosslinking the rubber composition which has passed through a microwave crosslinking apparatus 8 and a hot-air crosslinking apparatus 9 without being cut, to form cylindrical foam 5. A conductive roller includes the cylindrical foam manufactured through the above step. An image forming apparatus incorporates the conductive roller, as a charging roller, a developing roller, a transfer roller or the like.
    • 要解决的问题:提供一种制造导电辊的方法,所述导电辊被配置为防止外表面附近的泡沫单元直径极度减小,以防止图像缺陷,以及由制造方法制造的导电辊以及图像形成装置 结合导电辊。制造方法包括以下步骤:在压头压力为25MPa以下的条件下从挤出机3的喷头2将橡胶组合物连续挤出成圆柱形,连续发泡, 将通过微波交联装置8和热风交联装置9的橡胶组合物交联而不被切割,以形成圆柱形泡沫5.导电辊包括通过上述步骤制造的圆柱形泡沫。 图像形成装置包括导电辊,充电辊,显影辊,转印辊等。
    • 3. 发明专利
    • Manufacturing method of conductive roller, and the conductive roller
    • 导向滚子的制造方法和导向滚子
    • JP2004077917A
    • 2004-03-11
    • JP2002239662
    • 2002-08-20
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • YABUSHITA SHUNICHI
    • G03G15/00B29C65/48B29L31/32G03G15/02G03G15/08G03G15/16
    • PROBLEM TO BE SOLVED: To obtain a conductive roller capable of obtaining a good image, wherein a gap is not formed between a shaft and a foam layer arranged on the outer peripheral surface of the shaft, and tight adhesion is attained between them, and recesses are prevented from being formed on the roller surface. SOLUTION: As for the manufacturing method of the conductive roller 1 equipped with the shaft 2 and the cylindrical foam layer 3 formed on the outer peripheral surface 2a of the shaft 2, adhesive agent is applied on the outer peripheral surface 2a of the shaft 2 and/or the inner peripheral surface 3b of the foam layer 3, the shaft 2 is inserted into the hollow part of the foam layer 3, and then, by heating the shaft 2 and the foam layer 3 up to a temperature suitable to adhere with the adhesive agent without causing the deterioration of the foam layer 3 under the vacuum ambience having a vacuum of ≤ 50kPa, the thermal adhesion of the outer peripheral surface 2a of the shaft 2 and the inner peripheral surface 3b of the foam layer 3 is performed. COPYRIGHT: (C)2004,JPO
    • 要解决的问题为了获得能够获得良好图像的导电辊,其中在轴和布置在轴的外周表面上的泡沫层之间不形成间隙,并且在它们之间获得紧密粘合 并且防止在辊表面上形成凹部。 解决方案:对于配备有轴2和形成在轴2的外周面2a上的圆筒状泡沫层3的导电性辊1的制造方法,粘合剂被涂布在轴2的外周面2a上 轴2和/或泡沫层3的内周面3b,将轴2插入泡沫层3的中空部分,然后通过将轴2和泡沫层3加热至适于 在真空度≤50kPa的真空环境下粘附粘合剂而不引起发泡层3的劣化,轴2的外周面2a和泡沫层3的内周面3b的热粘合力为 执行。 版权所有(C)2004,JPO
    • 5. 发明专利
    • Polymer composition for use in conductive roller and conductive roller using the same
    • 使用导电辊和导电辊的聚合物组合物
    • JP2003064251A
    • 2003-03-05
    • JP2001252452
    • 2001-08-23
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • HATTORI TAKAYUKIMIZOGUCHI TETSUROYABUSHITA SHUNICHI
    • G03G15/02C08J3/22C08J5/00C08K3/22C08K5/405C08L71/03F16C13/00G03G15/00G03G15/08G03G15/16
    • PROBLEM TO BE SOLVED: To provide a conductive roller of high performance that has a low volume resistivity and controls permanent compressive strain low, and does not stain a photoconductor. SOLUTION: This polymer composition for use in a conductive roller comprises a rubber component that contains an epichlorohydrin rubber of ethylene oxide content of 55 mol% or more and 95 mol% or less as a main component, and a crosslinking agent that is a thiourea of 0.014 mol or more and 0.080 mol or less based on the rubber component as needed. This conductive roller has the permanent compressive strain of 15% or less when measured at 70 deg.C of the test temperature and for 22-24 hours of test period of time using the test method of permanent compressive strain of the vulcanized rubber described in JIS K6262 and has the volume resistivity of 10 [Ω.cm] or less when measured at an applied voltage of 1000 V using the test method of the volume resistivity described in JIS K6911.
    • 要解决的问题:提供具有低体积电阻率并且控制永久压缩应变低并且不污染光电导体的高性能的导电辊。 解决方案:用于导电辊的该聚合物组合物包括含有环氧乙烷含量为55摩尔%以上且95摩尔%以下的表氯醇橡胶为主成分的橡胶成分,作为硫脲的交联剂 0.014摩尔以上且0.080摩尔以下,根据需要,基于橡胶成分。 使用JIS中所述的硫化橡胶的永久压缩应变试验方法,在试验温度70℃,试验时间22-24小时,该导电性辊的永久压缩应变为15%以下 K6262,使用JIS K6911所述的体积电阻率的试验方法,在1000V的施加电压下测定体积电阻率为10 <7.5> [Ω·cm]以下。
    • 9. 发明专利
    • Polishing device of rubber roller and polishing method of rubber roller using this polishing device
    • 橡胶辊的抛光装置和使用该抛光装置的橡胶辊的抛光方法
    • JP2005161445A
    • 2005-06-23
    • JP2003402221
    • 2003-12-01
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • KAWAI YOSHINARIOKIDO YOSHIYUKIYABUSHITA SHUNICHI
    • B24B5/50
    • PROBLEM TO BE SOLVED: To accurately and efficiently polish a rubber roller without generating a recess on the rubber roller.
      SOLUTION: A tapered part 13 is peripherally arranged at an interval in the shaft direction of a grinding wheel 11 on the front end side of the grinding wheel 11 for polishing an outer peripheral surface of a mold 50 so as to gradually reducing a diameter by turning a plurality of step difference parts 12 to the forefront end surface. A flat part 14 continuing from the tapered part 13 is arranged with the rear end side of the grinding wheel 11 as a columnar shape having the same diameter. The height of the respective step difference parts 12 is set to 0.1 to 0.3 mm, and the shaft directional length of the flat part 14 is set to 20 to 100 mm. The mold 50 and the grinding wheel 11 are positioned so that a value of a-b becomes 0.3 mm or less when a polishing margin for polishing the mold 50 by a front end surface 16 and the step difference parts 12 of the grinding wheel 11 is set to (a) mm, and the total height of the step difference parts 12 of the grinding wheel 11 is set to (b) mm. Time when the grinding wheel 11 traverses a width of the respective step difference parts 12, and time when the mold 15 rotates once, are set in the substantially same.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为了精确而有效地对橡胶辊进行抛光,而不会在橡胶辊上产生凹陷。 解决方案:锥形部件13在研磨轮11的前端侧的砂轮11的轴向上沿周向间隔设置,用于对模具50的外周面进行抛光,以逐渐减小 通过将多个台阶差部件12转动到最前端表面来直径。 从锥形部1​​3延续的平坦部14以砂轮11的后端侧为直径相同的柱状。 各台阶差分部12的高度设定为0.1〜0.3mm,将平坦部14的轴方向长度设定为20〜100mm。 将模具50和砂轮11定位成使得当通过前端面16和砂轮11的台阶差异部12将模具50研磨的研磨余量设定为 (a)mm,并且将砂轮11的台阶差部件12的总高度设定为(b)mm。 砂轮11横穿各台阶差异部分12的宽度以及模具15旋转一次的时间被设定为大致相同的时间。 版权所有(C)2005,JPO&NCIPI
    • 10. 发明专利
    • Electrically conductive roller
    • 电导辊
    • JP2003323065A
    • 2003-11-14
    • JP2002133212
    • 2002-05-08
    • Sumitomo Rubber Ind Ltd住友ゴム工業株式会社
    • YABUSHITA SHUNICHIKAWAI YOSHINARIMATSUSHITA MASAYUKIMIYATA TAKASHI
    • G03G15/00F16C13/00G03G15/16
    • PROBLEM TO BE SOLVED: To provide an electrically conductive roller in which a core bar comes into uniform contact with a roller part and image unevenness due to a recess on a roller surface does not appear.
      SOLUTION: Even when a plurality of minute gaps 4 exist between the core bar 2 and the roller part 3 in a state where the core bar 2 having a cross sectional area in a radial direction larger than the cross sectional area in the radial direction of a hollow part 3a of the roller part 3 is force-fitted into the hollow part 3a, length L in the axial direction of the gap 4 is ≤800 μm and length W in the peripheral direction of the gas 4 is ≤3 mm, height H of the gas 4 is ≤60 μm, a distance D between gaps 4 is ≥2 mm and the core bar 2 comes into uniform contact with the roller part 3 as a whole.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种导电辊,其中芯棒与辊部分均匀地接触,并且不会出现由于辊表面上的凹部引起的图像不均匀。 解决方案:即使在芯棒2和辊部3之间存在多个微小间隙4,在芯棒2的径向方向上的横截面积大于径向横截面积的状态下 辊部3的中空部3a的方向被压配合到中空部3a中,间隙4的轴向的长度L为≤800μm,气体4的周向的长度W为≤3mm ,气体4的高度H为≤60μm,间隙4之间的距离D为≥2mm,芯棒2整体与辊部3均匀地接触。 版权所有(C)2004,JPO