Image-forming apparatus and cartridge
AssigneeCanon Kabushiki Kaisha
InventorsYu Shuhama, Yoichiro Iizuka
Life of this patent
Estimating the term…
Abstract
An image-forming apparatus includes a coupling recess to be engaged with a coupling protrusion to rotate the coupling protrusion, a second gear portion to be engaged with a gear to rotate the gear, and a driving force transmitter that is rotatable about a predetermined rotational axis. A torque required to rotate the gear is larger than a torque required to rotate the second gear portion in a state where the coupling recess does not engage the coupling protrusion.
Claims18
An image-forming apparatus, comprising:
- a main body of the apparatus in which a cartridge including a first driven body, a second driven body, a first engaged portion to be engaged for receiving a driving force that causes the first driven body to be driven, and a second engaged portion to be engaged for receiving a driving force that causes the second driven body to be driven is installed;
- and
- a driving force transmitter that includes a first engaging portion engaging the first engaged portion to rotate the first engaged portion and a second engaging portion engaging the second engaged portion to rotate the second engaged portion and that is rotatable about a predetermined rotational axis,
- wherein a torque required to rotate the second engaged portion is larger than a torque required to rotate the second engaging portion in a state where the first engaging portion does not engage the first engaged portion.
A cartridge to be installed in an image-forming apparatus including a main body of the apparatus and a driving force transmitter that includes a first engaging portion and a second engaging portion and that is rotatable about a predetermined rotational axis, comprising:
- a first driven body;
- a second driven body;
- a first engaged portion configured to be engaged with the first engaging portion for receiving a driving force that causes the first driven body to be driven;
- and
- a second engaged portion configured to be engaged with the second engaging portion for receiving a driving force that causes the second driven body to be driven,
- wherein a torque required to rotate the second engaged portion is larger than a torque required to rotate the second engaging portion in a state where the first engaging portion does not engage the first engaged portion.
Dependencies are inferred from the claim text.