| 摘要 |
<p>A corona discharger 6 has a case section 64, a stylus electrode 63 stretched within the case, and a cleaning member 24 which can slidably move along a longitudinal direction of the stylus electrode in the state that the stylus electrode is sandwiched in the cleaning member. The cleaning member has a movable body 25 attached to the case section so as to be reciprocally movable along the longitudinal direction of the stylus electrode; two slidably-contacting members 30 and 31 which is formed from a combination of an unrotational slidably-contacting member and an axially-rotational slidably-contacting member and which is supported by the movable member and holds the stylus electrode between the members; and an urging unit 32 interposed between the movable body and the unrotational slidably-contacting member so as to elastically urge the unrotational slidably-contacting member to the axially-rotational slidably-contacting member. Positions of the two slidably-contacting members are set in such a way that a nip section "n" between the slidably-contacting members is positioned slightly closer to the unrotational slidably-contacting member with reference to a tension line of the stylus electrode.</p> |
