Patent ID: 11892783
Assignee: FUJIFILM BUSINESS INNOVATION CORP.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. A developing device comprising:
a developer holding body that holds a developer;
an agitating and supplying section that agitates and supplies the developer to the developer holding body;
an agitating and transporting section that is arranged below the agitating and supplying section in a vertical direction and agitates and transports the developer;
an upward transport section that is arranged on a downstream side in a transport direction of the agitating and transporting section and transports the developer transported from the agitating and transporting section to the agitating and supplying section above; and
a speed increasing section that increases a rotation of a rotating shaft of any one of the agitating and transporting section, the agitating and supplying section, or the developer holding body and transmits the rotation to the upward transport section,
wherein the speed increasing section has
a first transmitting section that increases a drive force of the rotating shaft of the second agitating and transporting section and transmits the drive force to an intermediate shaft, and
a second transmitting section that transmits the drive force of the intermediate shaft to the upward transport section.