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    • 5. 发明授权
    • Toner supply roll including cylindrical polyurethane sponge structure having helical protrusions on its outer surface
    • 调色剂供应辊包括在其外表面上具有螺旋突起的圆柱形聚氨酯海绵结构
    • US06196958B1
    • 2001-03-06
    • US09315368
    • 1999-05-18
    • Keita ShirakiAkihiko Kaji
    • Keita ShirakiAkihiko Kaji
    • F16C1300
    • G03G15/0808
    • A toner supply roll including a cylindrical soft polyurethane sponge structure which is integrally formed on a metal shaft and which has a hardness of not higher than 350 g, a network of cells, and a skin layer having openings which are open in its outer circumferential surface and which communicate with respective radially outermost ones of the cells located adjacent to the skin layer, wherein the openings have a size of 100-800 &mgr;m, and a total area percent of at least 20% of the total area of the outer circumferential surface of the skin layer, and the sponge structure has a plurality of helical protrusions formed on the outer circumferential surface of the skin layer so as to extend helically about an axis of the sponge structure, the helical protrusions being arranged in a circumferential direction of the sponge structure, so as to form a plurality of helical recesses each interposed between adjacent ones of the helical protrusions, so that helical protrusions and recesses cooperate to define a toothed profile in transverse cross section in a plane perpendicular to the axis.
    • 一种调色剂供应辊,其包括一体地形成在金属轴上并具有不高于350g的硬度的圆柱形软质聚氨酯海绵结构,细胞网络和具有在其外周表面上开口的开口的表皮层 并且与位于皮肤层附近的单元的径向最外侧的单元连通,其中开口具有100-800μm的尺寸,并且总面积百分比至少为外圆周表面总面积的20% 皮肤层和海绵结构具有形成在表层的外周表面上的多个螺旋形突起,以便围绕海绵结构的轴线螺旋地延伸,螺旋突起沿海绵结构的圆周方向布置 以便形成多个螺旋形凹槽,每个螺旋凹槽各自插入在相邻的螺旋突起之间,使得螺旋形突起和凹槽合拢 以在垂直于轴线的平面中以横截面限定齿形轮廓。
    • 6. 发明授权
    • Conductive roller
    • 导电辊
    • US6142922A
    • 2000-11-07
    • US341431
    • 1999-08-31
    • Hitoshi YoshikawaShoji ArimuraAkihiko KajiKenichi Ohkuwa
    • Hitoshi YoshikawaShoji ArimuraAkihiko KajiKenichi Ohkuwa
    • B29D99/00B32B25/08G03G15/02G03G15/08G03G15/16B23P15/00
    • B29D99/0035B32B25/08G03G15/0233G03G15/0818G03G15/1685B29K2995/0005B29L2031/324G03G2215/0861
    • A conductive roll to be used as a developing roll, a charging roll, a transfer roll or the like in an electrophotographic apparatus such as a copying machine, a printer or a facsimile, of the present invention comprises a base rubber layer formed on a peripheral surface of a shaft, an intermediate layer formed on a peripheral surface of the base rubber layer, and a surface layer formed on a peripheral surface of the intermediate layer, the surface layer being composed of a resin composition comprising:(A) a silicone-grafted acrylic polymer which comprises repeating units represented by the following general formula (1), wherein an acrylic polymer portion of the silicone-grafted acrylic polymer exclusive of a structural portion derived from a siloxane has a glass-transition temperature of -35 to 30.degree. C.:--(Y).sub.k -- --(Z).sub.n -- (1)(wherein Y is a structural portion derived from an acrylic monomer; Z is a structural portion derived from the acrylic monomer, which has a graft portion derived from a siloxane; k is a positive number of 1 to 3,000; and n is a positive number of 1 to 3,000); and(B) an isocyanate curing agent.
    • PCT No.PCT / JP98 / 05058 Sec。 371日期1999年8月31日 102(e)日期1999年8月31日PCT提交1998年11月10日PCT公布。 WO99 /​​ 24487 PCT公开号 日期1999年5月20日在本发明的电子照相设备如复印机,打印机或传真机中,用作显影辊,充电辊,转印辊等的导电辊包括基底橡胶层 形成在轴的周面上,形成在基底橡胶层的周面上的中间层和形成在中间层的周面的表层,所述表面层由树脂组合物构成,所述树脂组合物包含:(A )包含由以下通式(1)表示的重复单元的硅氧烷接枝的丙烯酸类聚合物,其中除了衍生自硅氧烷的结构部分之外的硅氧烷接枝的丙烯酸类聚合物的丙烯酸聚合物部分的玻璃化转变温度为 35〜30℃: - (Y)k- - (Z)n-(1)(其中Y是衍生自丙烯酸类单体的结构部分; Z是衍生自丙烯酸类单体的结构部分,其具有接枝 宝 衍生自硅氧烷的化合物; k是1到3,000的正数; n为1〜3,000的正数); 和(B)异氰酸酯固化剂。