| CPC G03G 15/757 (2013.01) [F16H 57/023 (2013.01); F16H 57/033 (2013.01); G03G 15/6529 (2013.01); G03G 15/80 (2013.01); G03G 21/1647 (2013.01); G03G 2221/1657 (2013.01)] | 27 Claims |
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1. An image forming apparatus configured to form an image on a sheet, the image forming apparatus comprising:
a driven member;
a frame body configured to support the driven member;
a driving source configured to generate a driving force; and
a drive transmission unit configured to transmit the driving force of the driving source to the driven member, the drive transmission unit including a gear train including a first gear configured to rotate by the driving force from the driving source, and a gear cover configured to cover the gear train,
wherein the gear cover includes an outer surface that extends in an orthogonal direction orthogonal to a rotational axis direction of the first gear, and a first concave portion that is concaved in a first direction parallel to the rotational axis direction from the outer surface, the gear cover being arranged upstream of the frame body in the first direction,
wherein the first gear includes a shaft portion that passes through a first hole formed on the first concave portion and that protrudes to a second direction opposite to the first direction from the first hole,
wherein the outer surface is a surface having a maximum area in the orthogonal direction among surfaces of the gear cover facing the second direction, and
wherein a downstream end, in the second direction, of the shaft portion is a most downstream end of the gear train in the second direction and is arranged upstream of a virtual surface in the second direction, the virtual surface being positioned at a distance shifted to the second direction for a distance corresponding to a plate thickness of the gear cover from the outer surface, the virtual surface being extended in the orthogonal direction.
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