JP2012226166A5 - - Google Patents

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Publication number
JP2012226166A5
JP2012226166A5 JP2011094393A JP2011094393A JP2012226166A5 JP 2012226166 A5 JP2012226166 A5 JP 2012226166A5 JP 2011094393 A JP2011094393 A JP 2011094393A JP 2011094393 A JP2011094393 A JP 2011094393A JP 2012226166 A5 JP2012226166 A5 JP 2012226166A5
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JP
Japan
Prior art keywords
photosensitive drum
support shaft
gear
positioning mechanism
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2011094393A
Other languages
Japanese (ja)
Other versions
JP2012226166A (en
Filing date
Publication date
Application filed filed Critical
Priority to JP2011094393A priority Critical patent/JP2012226166A/en
Priority claimed from JP2011094393A external-priority patent/JP2012226166A/en
Publication of JP2012226166A publication Critical patent/JP2012226166A/en
Publication of JP2012226166A5 publication Critical patent/JP2012226166A5/ja
Pending legal-status Critical Current

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Claims (3)

感光ドラムと、感光ドラムの回転に追従して回転する現像ローラと、感光ドラムを軸支する支持軸とを有し、前記感光ドラムは前記支持軸に軸通され、前記感光ドラムを軸線方向にスライドさせて前記支持軸から着脱可能とし、前記支持軸に軸通される一方の前記感光ドラム側に取付部を設け、前記感光ドラムを装着した時に該取付部を受ける前記支持軸に設けられた受け部とからなり、前記感光ドラムと前記支持軸には、前記支持軸に前記感光ドラムを装着した時に、前記感光ドラムの軸心の位置決めを行う位置決め機構であって、A photosensitive drum; a developing roller that rotates following the rotation of the photosensitive drum; and a support shaft that supports the photosensitive drum. The photosensitive drum is passed through the support shaft, and the photosensitive drum is moved in the axial direction. A mounting portion is provided on one side of the photosensitive drum that is slidable by being detachable from the support shaft, and is provided on the support shaft that receives the mounting portion when the photosensitive drum is mounted. A positioning mechanism for positioning the photosensitive drum and the support shaft to the photosensitive drum and the support shaft when the photosensitive drum is mounted on the support shaft;
前記感光ドラムのフランジには前記支持軸方向にねじ山が形成された第１ギアを設け、該第１ギアと噛み合うように前記現像ローラのフランジには同じく支持軸方向にねじ山が形成された第２ギアを設けてなり、各々前記感光ドラムの回転を前記現像ローラに伝達し、前記支持軸に前記感光ドラムを装着した時に、前記位置決め機構の前記感光ドラムの軸心の位置決め作用と、前記第２ギアに前記第１ギアを噛み合わせた歯圧とにより前記感光ドラムの軸心の位置を固定することを特徴とするローラ位置決め機構。The photosensitive drum flange is provided with a first gear threaded in the support shaft direction, and the developing roller flange is also threaded in the support shaft direction so as to mesh with the first gear. A second gear is provided, each of which transmits rotation of the photosensitive drum to the developing roller, and when the photosensitive drum is mounted on the support shaft, the positioning operation of the axial center of the photosensitive drum of the positioning mechanism; A roller positioning mechanism for fixing a position of an axis of the photosensitive drum by a tooth pressure obtained by meshing the first gear with a second gear. 前記位置決め機構は、前記取付部を前記フランジに設けられた凸部とし、さらに、前記受部を該凸部に嵌合する形状をなすことを特徴とする請求項１記載のローラ位置決め機構。The roller positioning mechanism according to claim 1, wherein the positioning mechanism has a shape in which the mounting portion is a convex portion provided on the flange, and the receiving portion is fitted into the convex portion. 前記第１ギアと前記第２ギアはハス歯歯車であることを特徴とする請求項１または２記載のローラ位置決め機構。 The roller positioning mechanism according to claim 1, wherein the first gear and the second gear are helical gears.
JP2011094393A 2011-04-20 2011-04-20 Roller positioning mechanism Pending JP2012226166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2011094393A JP2012226166A (en) 2011-04-20 2011-04-20 Roller positioning mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2011094393A JP2012226166A (en) 2011-04-20 2011-04-20 Roller positioning mechanism

Publications (2)

Publication Number Publication Date
JP2012226166A JP2012226166A (en) 2012-11-15
JP2012226166A5 true JP2012226166A5 (en) 2014-06-05

Family

ID=47276395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2011094393A Pending JP2012226166A (en) 2011-04-20 2011-04-20 Roller positioning mechanism

Country Status (1)

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JP (1) JP2012226166A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0553383A (en) * 1991-08-23 1993-03-05 Canon Inc Process cartridge
JP4126254B2 (en) * 2003-06-30 2008-07-30 株式会社リコー Image forming apparatus

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