IMAGE FORMING APPARATUS

• Main Author: MITSUMATA AKINORI
• Format: Patent
• Language: English; Japanese
• Published: 05.10.2015
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of suppressing operating sound caused by vibration and reducing bending and vibration of a support member generated by a frictional force working between a belt and a transfer member with a simple and inexpensive configuration.SOLUTION: A representative configuration of the image forming apparatus according to the present invention includes: photosensitive drums 103y to 103k for carrying a toner image; an intermediate transfer belt 106 for transferring the toner image from the photosensitive drums 103y to 103k to a sheet S; a transfer member 108 brought into contact with a rear surface of the intermediate transfer belt 106 and transferring the toner image on the photosensitive drums 103y to 103k; a support member 109 for supporting the transfer member 108; and a positioning member 110 for holding the support member 109. The positioning member 110 is connected to the support member 109 at least in a region corresponding to the inside of the image forming region of the photosensitive drums 103y to 103k in a belt width direction B perpendicular to the rotation direction A of the intermediate transfer belt 106. 【課題】本発明は、簡単かつ安価な構成で、ベルトと転写部材の間に働く摩擦力によって発生する支持部材の撓み、振動を低減し、振動による稼働音を抑制することができる画像形成装置を提供することを目的とする。【解決手段】本発明に係る画像形成装置の代表的な構成は、トナー像を担持する感光ドラム１０３ｙ〜１０３ｋと、感光ドラム１０３ｙ〜１０３ｋからシートＳへトナー像を転写するための中間転写ベルト１０６と、中間転写ベルト１０６の裏面に接触し、感光ドラム１０３ｙ〜１０３ｋ上のトナー像を転写するための転写部材１０８と、転写部材１０８を支持する支持部材１０９と、支持部材１０９を保持する位置決め部材１１０と、を有する画像形成装置において、位置決め部材１１０は、中間転写ベルト１０６の回転方向Ａと直交するベルト幅方向Ｂにおいて、少なくとも、感光ドラム１０３ｙ〜１０３ｋの画像形成領域内に対応する領域で、支持部材１０９と接合されていることを特徴とする。【選択図】図２