Bearing member, end member, photosensitive drum unit, process cartridge, and method for manufacturing bearing member
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United States of America Patent
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Jun 23, 2015
Grant Date -
Dec 5, 2013
app pub date -
May 24, 2013
filing date -
May 30, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A bearing member placed at an end of a photosensitive drum, and a shaft member is attached thereto. The bearing member has a cylindrical body and a retaining portion placed in the cylindrical body, retaining a torque transmission pin provided in the shaft member, and removably provided. The retaining portion is provided with swaying grooves at least two grooves extending in an axial direction of the cylindrical body, placed opposite each other, and whose bottoms have each a curved surface exhibiting a bow with respect to the axial direction; inlet grooves at one end thereof connected to the respective swaying grooves and at the other end thereof connected to outside of the retaining portion and placed at an upstream position with respect to the swaying grooves along a direction of rotation of the cylindrical body; and a pedestal interposed, at one end, between the two swaying grooves.
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