IMAGE FORMING APPARATUS

To provide an image forming apparatus that can prevent a unit from moving in a direction in which positioning comes off.SOLUTION: An image forming apparatus comprises: a unit that is positioned with respect to an apparatus main body; and a driving device that rotates a driving member of the unit in...

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Bibliographic Details
Main Author SAKAMOTO SHOGO
Format Patent
LanguageEnglish
Japanese
Published 15.04.2021
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:To provide an image forming apparatus that can prevent a unit from moving in a direction in which positioning comes off.SOLUTION: An image forming apparatus comprises: a unit that is positioned with respect to an apparatus main body; and a driving device that rotates a driving member of the unit in normal and reverse directions. The driving device has a main body-side gear 76 that is provided in the apparatus main body, and a unit-side gear 25b that is provided in a unit that is engaged with the main body-side gear 76. The unit-side gear 25b and the main body-side gear 76 are arranged such that, in transmitting a driving force to the driving member, a component in a direction in which positioning of the unit with respect to a force applied from the main body-side gear 76 to the unit-side gear 25b becomes smaller than a static frictional force with respect to a device body of the unit.SELECTED DRAWING: Figure 16 【課題】ユニットが位置決めが外れる方向に移動するのを抑制することができる画像形成装置を提供する。【解決手段】画像形成装置は、装置本体に対して位置決めされたユニットと、ユニットの駆動部材を正逆回転させる駆動装置とを備えている。駆動装置は、装置本体に設けられた本体側ギヤ７６と、本体側ギヤ７６に噛み合うユニットに設けられたユニット側ギヤ２５ｂとを有している。そして、駆動部材に駆動力を伝達する際に、本体側ギヤ７６からユニット側ギヤ２５ｂに加わる力のユニットの位置決めが外れる方向の成分が、ユニットの装置本体に対する静止摩擦力より小さくなるように、ユニット側ギヤ２５ｂと本体側ギヤ７６とを配置している。【選択図】図１６
Bibliography:Application Number: JP20190184671