Drive transmission unit and image forming apparatus incorporating same
AssigneeRicoh Company, Ltd.
InventorsMasahiro Ishida, Naoki Matsuda
Life of this patent
Estimating the term…
Abstract
A drive transmission unit is described that includes a drive source, and a rotatable drive transmitting member to transmit a driving force from the drive source. The drive transmitting member includes a bottom part intersecting an axis of the drive transmitting member, a circular transmitting part extending from the bottom part in an axial direction of the drive transmitting member and including an internal toothed surface on an inner circumferential surface of the transmitting part to mesh with a first member, and a first projecting part and a second projecting part projecting in opposite directions from the bottom part along the axial direction of the drive transmitting member and having different diameters.
Claims10
A drive transmission unit comprising:
- a drive source including a gear;
- and
- a rotatable drive transmitting member to transmit a driving force from the drive source, the rotatable drive transmitting member including:
- a bottom part perpendicular to an axial direction of the rotatable drive transmitting member;
- a first circular wall projecting in a first direction along the axial direction of the rotatable drive transmitting member;
- a first circular projecting part projecting in the first direction;
- and
- a second circular projecting part projecting in a second direction, opposite the first direction,
- wherein the first circular wall includes an inner circumferential surface with an internal toothed part to mesh with the gear,
- wherein an inner diameter of the second circular projecting part is relatively greater than an outer diameter of the first circular projecting part, and
- wherein an outer diameter of the second circular projecting part is relatively smaller than an inner diameter of the first circular wall.
Dependencies are inferred from the claim text.