CHARGING DEVICE AND IMAGE FORMING APPARATUS USING THE SAME

PROBLEM TO BE SOLVED: To provide an aspect in which a charging member and a cleaning member is held with holding members common to those members, and maintain good assemblability of the charging member and cleaning member to the holding members without changing the lengths in the axial direction.SOL...

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1. Verfasser: ICHIKAWA YUZO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an aspect in which a charging member and a cleaning member is held with holding members common to those members, and maintain good assemblability of the charging member and cleaning member to the holding members without changing the lengths in the axial direction.SOLUTION: A charging device comprises: a charging member 2 that is rotated following a charging target body 11; a cleaning member 3 that cleans the charging member 2; a pair of holding members 4 that rotatably hold the charging member 2 and cleaning member 3 while maintaining the distance between two shafts; and an urging member 5 that urges the holding member 4 so as to press the charging member 2 against the charging target body 11. The pair of holding members 4 include bearing parts 6 and 7 that rotatably hold the shafts of the charging member 2 and cleaning member 3 at both ends; one holding member 4A forms an extension part 8 that extends toward the outside in the axial direction from a bearing part 6 (6A) of the charging member 2 in a bearing part 7 (7A) of the cleaning member 3, and forms a reception part 9 that temporarily receives a shank 3a of the cleaning member 3 at a portion adjacent to the entry of the bearing part 7 (7A) of the cleaning member.SELECTED DRAWING: Figure 1 【課題】帯電部材及び清掃部材を共通の保持部材で保持する態様において、帯電部材及び清掃部材の軸方向長を異ならせずに保持部材への組付性を良好に保つ。【解決手段】被帯電体11に追従して回転する帯電部材2と、帯電部材2を清掃する清掃部材3と、帯電部材2及び清掃部材3の2軸間距離を保って回転可能に保持する対構成の保持部材4と、帯電部材2を被帯電体11側に押し付けるように保持部材4を付勢する付勢部材5と、を備え、対構成の保持部材4は、帯電部材2及び清掃部材3の両端軸が回転可能に保持される軸受部6,7を有し、一方の保持部材4Aは、清掃部材3の軸受部7(7A)に帯電部材2の軸受部6(6A)よりも軸方向外方側に向かって延長するように延びる延長部8を形成すると共に、清掃部材の軸受部7(7A)の入口に隣接した箇所には清掃部材3の軸部3aを一時的に受け止める受止部9を形成する。【選択図】図1