Image forming apparatus capable of reducing image banding
AssigneeFuji Xerox Co., Ltd.
InventorsYasutomo Ishii, Yu Tsuda, Shigemi Murata
Life of this patent
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Abstract
Provided is an image forming apparatus including an image holding member that has an outer circumferential surface in which a radius length from a center in the image holding member varies to be the longest N times and the shortest N times during one rotation of the image holding member wherein N is an integer of 2 or more, and that holds a latent image while being rotated, a developing member that develops the latent image of the image holding member with a developer, a rotation unit that rotates the developing member by a number of an integer multiple of the N during the one rotation of the image holding member, and an output unit that outputs a developer image of the image holding member to a recording medium.
Claims4
An image forming apparatus comprising:
- an image holding member comprising an outer circumferential surface in which a length of a radius from a center of the image holding member varies to be the longest N times and the shortest N times during one rotation of the image holding member wherein N is an integer of 2 or more, the image holding member being configured to hold a latent image while being rotated;
- a developing member configured to develop the latent image of the image holding member with a developer;
- a rotation unit configured to rotate the developing member by a number of an integer multiple of N during the one rotation of the image holding member;
- a controller configured to change a phase difference between a first predetermined position of an outer circumferential surface of the developer member and a second predetermined position of an outer circumferential surface of the image forming member;
- and
- an output unit configured to output a developer image of the image holding member to a recording medium,
- wherein a portion of the image holding member at which the radius from the center is the longest is configured to be positioned in a development area at the same time as a portion of the developing member at which the radius from the center is the shortest.
Dependencies are inferred from the claim text.