Image forming apparatus and image forming method

Abstract

The invention provides an image forming device and an image forming method. The image forming apparatus of the present invention includes a plurality of image carriers, an intermediate transfer body, a plurality of primary transfer members, a secondary transfer member, a first guide member, and a control unit. A plurality of image carriers carries toner images. The intermediate transfer body is in contact with a plurality of image carriers. The plurality of primary transfer members primarily transfer the toner images on the plurality of image carriers to the intermediate transfer body. The secondary transfer member secondarily transfers the toner image on the intermediate transfer body to the recording medium. The first guide member guides the recording medium along the transport direction. The control unit controls the primary transfer bias and the secondary transfer bias. The plurality of primary transfer members include upstream and downstream primary transfer members. The control unit controls to make the absolute value of the primary transfer bias applied to the downstream primary transfer member larger than the upstream side, and to decrease the absolute value of the secondary transfer bias when the upstream end of the recording medium separates from the first guide member.

Description

technical field [0001] The present invention relates to an image forming apparatus and an image forming method, and more particularly, to an image forming apparatus and an image forming method of a secondary transfer method including an intermediate transfer body. Background technique [0002] In the related art, an image forming apparatus of a secondary transfer method including an intermediate transfer body is known. [0003] For example, an image forming apparatus of a secondary transfer method includes: a plurality of image carriers that carry toner images; an intermediate transfer body that is in contact with the plurality of image carriers; and a plurality of primary transfer members that carry a plurality of The toner images on the image carriers are firstly transferred on the intermediate transfer body; the secondary transfer member, which secondarily transfers the toner images on the intermediate transfer body to the recording medium; the guide member, It is provid...

AI Technical Summary

Problems solved by technology

When the above situation occurs, discharge may occur in the peripheral area of ​​the secondary transfer member, and transfer failure (so-called "void") may occur where the image is partially missing.

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