US 2012/0237266 A1 · Developing Apparatus and Image Forming Apparatus

Abstract

A driving force produced by a first driving motor is transmitted to a developing roller and an intermediate application roller by a first drive transmission unit, and the developing roller and the intermediate application roller are rotated as a result. The developing roller and the intermediate application roller thus take the first driving motor as a drive source, and receive the driving force from the first driving motor via the same first drive transmission unit. As a result, the phases of the fluctuation in a rotational component of the first driving motor and the cyclic fluctuation of gear interlocking match, which reduces a rotational velocity difference between the developing roller and the intermediate application roller.

Claims8

Dependent claims

A developing apparatus comprising:

a reservoir unit that holds a liquid developer containing toner and a carrier liquid;
a first supply roller that bears the liquid developer held in the reservoir unit by rotating;
a second supply roller to which the liquid developer is supplied from the first supply roller by rotating while making contact with the first supply roller;
a developer bearing roller that bears the liquid developer supplied from the second supply roller by rotating while making contact with the second supply roller;
a first drive source that drives the developer bearing roller and the second supply roller;
and
a second drive source that drives the first supply roller.

4 more elements

An image forming apparatus comprising:

a latent image bearing member on which a latent image is formed;
a developing unit that develops the latent image formed on the latent image bearing member, the developing unit including a reservoir unit that holds a liquid developer containing toner and a carrier liquid, a first supply roller that bears the liquid developer held in the reservoir unit by rotating, a second supply roller to which the liquid developer is supplied from the first supply roller by rotating while making contact with the first supply roller, and a developer bearing roller that bears the liquid developer supplied from the second supply roller by rotating while making contact with the second supply roller;
a first drive source that drives the developer bearing roller and the second supply roller;
and
a second drive source that drives the first supply roller.

2 more elements

Dependencies are inferred from the claim text.

Developing Apparatus and Image Forming Apparatus

Life of this patent

Developing Apparatus and Image Forming Apparatus

Life of this patent

Abstract

Claims8