US 2019/0101855 A1 · IMAGE FORMING APPARATUS

Abstract

An image forming apparatus includes: an image bearing member; a developer carrying member configured to contact with the image bearing member and to be separated from the image bearing member; a control unit for controlling the image bearing member and the developer carrying member; and a contact member disposed in contact with the image bearing member. The control unit is configured to sequentially execute: (1) rotating the image bearing member at a first speed in a separated state; (2) switching the image bearing member and the developer carrying member from the separated state to a contact state in a state in which the image bearing member rotates at the first speed; and (3) rotating the image bearing member by decreasing a rotation speed of the image bearing member from the first speed to a second speed smaller than the first speed in the contact state.

Claims18

Dependent claims

An image forming apparatus, comprising:

an image bearing member;
a developer carrying member configured to carry a developer and be able to take a contact state in which the developer carrying member contacts with the image bearing member and a separated state in which the developer carrying member is separated from the image bearing member;
a control unit configured to control the image bearing member and the developer carrying member;
and
a contact member disposed in contact with a surface of the image bearing member,
wherein the control unit is configured to sequentially execute:
(1) rotating the image bearing member at a first speed in the separated state;
(2) switching from the separated state to the contact state when the image bearing member rotates at the first speed;
and
(3) rotating the image bearing member by decreasing a rotation speed of the image bearing member from the first speed to a second speed smaller than the first speed in the contact state,
in order to rotate the image bearing member at the second speed in the contact state.

8 more elements

Dependencies are inferred from the claim text.

Image forming apparatus

Life of this patent

Image forming apparatus

Life of this patent

Abstract

Claims18