Patent ID: 9298127
Filing Date: 2016-03-29
CPC Classification: G03G

Claim Text:
1. A developing device, comprising: a developer bearer to bear developer on a surface thereof, the developer bearer being rotatable forward and in reverse; and a regulation member disposed in contact or non-contact with the surface of the developer bearer to regulate amount of the developer on the developer bearer, wherein, in a non-development period, when the developer bearer rotates in a direction of reverse rotation opposite to a direction of forward rotation in which the developer bearer rotates in a development period, the developer bearer stops a series of rotating operations after the developer bearer rotates in the direction of forward rotation as a last rotating operation, and a total rotation amount of forward rotation is set to be greater than a total rotation amount of reverse rotation in the series of rotating operations, and wherein in the non-development period, the reverse rotation and the forward rotation of the developer bearer are alternately performed plural times, the rotation amount of forward rotation in the last rotating operation is set to be greater than the rotation amount of reverse rotation precedent to the forward rotation in the last rotating operation, and a rotation amount of forward rotation in a rotating operation other than the last rotating operation is set to be smaller than the rotation amount of the reverse rotation precedent to the forward rotation in the last rotating operation.