Electrostatic removing member having semiconductive zirconia sintered body
AssigneeKYOCERA Corporation
InventorsMikaki Shinji, Hamashima Hiroshi, Iwasaki Koichi, Iwamoto Kuniharu, Nakahara Masahiro, Okumura Masahiro, Hino Shouji, Nabeshima Yutaka
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Abstract
An electrostatic removing member includes a semiconductive zirconia sintered body having a volume specific resistance value from 105 to 109Ω·cm. Preferably, the semiconductive zirconia sintered body includes 60 to 90 weight % of ZrO2, a stabilizing agent, and 10 to 40 weight % of one or more of oxides of Fe, Co, Ni and Cr. In one embodiment, the semiconductive zirconia sintering body at least partially forms a gripper.
Claims6
An electrostatic removing member comprising a semiconductive zirconia sintered body having 60 to 90 weight % of ZrO2 with a stabilizing agent present in amount by molar percent of ZrO2 selected from the group consisting of 3 to 9 mol % Y2O3, 16 to 26 mol % MgO, 8 to 12 mol % CaO, and 10 to 16 mol % CeO2, and from more than 10 to less than about 40 weight % of a conductivity giving agent including one or more metal oxides,
- wherein the semiconductive zirconia sintered body has a volume specific resistance value from 106 to 109Ω·cm, and
- wherein the semiconductive zirconia sintered body has less than or equal to 2 wt % Al2O3.
Dependencies are inferred from the claim text.