Image forming apparatus

The present invention relates to an image forming apparatus comprising: an exposing means and a developing means. The developing means comprises a plurality of developing devices, a rotating member rotatable while supporting the plurality of the developing devices, and a driving means for the rotati...

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Bibliographic Details
Main Authors FUJIWARA YUKIHIRO, NAKAHATA HIROSHI, KUDO TOSHIHIKO, NAGASE TETSUYA, YOKOTA MASAHIKO
Format Patent
LanguageEnglish
Published 11.08.2005
Edition7
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:The present invention relates to an image forming apparatus comprising: an exposing means and a developing means. The developing means comprises a plurality of developing devices, a rotating member rotatable while supporting the plurality of the developing devices, and a driving means for the rotation drive of the rotating member for selectively moving the plurality of the developing devices to the developing position such that the driving means transmits driving force to the rotating member via a gear at a drive transmitting position. An angle thetae(°) formed by a straight line linking the rotation center of the rotating member and the drive transmitting position and the tangent of the image bearing member at an exposing position in the image bearing member moving direction satisfies the following relationship with the premise that a pressure angle of the gear is alpha(°) and the image bearing member rotating direction is positive: -alpha<=thetae<=alpha.
Bibliography:Application Number: US20050041203