Patent ID: 7949270

Claim:
A development method in an image forming apparatus wherein an oscillating bias voltage, in which a development-side electrical potential that can apply an electrostatic force to a toner in a development apparatus in a direction from a developer bearing member to an electrostatic latent image bearing member and an opposite development-side electrical potential that can apply an electrostatic force to the toner in a direction from the electrostatic latent image bearing member to the developer bearing member alternate with each other, is applied between the developer bearing member and the electrostatic latent image bearing member so that an electrostatic latent image formed on a surface of the electrostatic latent image bearing member is developed with the toner, the development method comprising: a first application step of initially applying a first electrical potential V 1 as the development-side electrical potential; and a second application step of applying a second electrical potential V 2 as the development-side electrical potential subsequent to the first application step; wherein an absolute value of the first electrical potential V 1 is set larger than an absolute value of the second electrical potential V 2 , and a first time period for performing the first application step is set less than a second time period for performing the second application step.