JP2003076163A5

JP2003076163A5 -

Info

Publication number: JP2003076163A5
Application number: JP2001263202A
Authority: JP
Filing date: 2001-08-31
Publication date: 2004-12-02
Anticipated expiration: 2021-08-31

Description

【０００８】
【課題を解決するための手段】
上記の目的は、像担持体を帯電する帯電手段と、画像情報に基づき前記像担持体に静電潜像を形成する露光手段と、前記静電潜像にトナーを供給し、前記静電潜像をトナー像として可視化する複数の現像手段と、前記現像手段により像担持体上に形成された各色のトナー像を中間転写体に順次転写させる一次転写手段と、前記中間転写体上に転写された複数色のトナー像を転写材に転写させる二次転写手段とを備えた画像形成装置において、前記一次転写手段の転写電流が、各色のトナー像転写で異なることにより達成される。 [0008]
[Means for Solving the Problems]
The above objects are: charging means for charging the image carrier, exposure means for forming an electrostatic latent image on the image carrier based on image information, toner is supplied to the electrostatic latent image, and the electrostatic latent image is A plurality of developing means for visualizing an image as a toner image, a primary transfer means for sequentially transferring a toner image of each color formed on the image carrier by the developing means onto an intermediate transfer body, and transferred onto the intermediate transfer body In the image forming apparatus provided with the secondary transfer means for transferring the toner images of a plurality of colors onto the transfer material, the transfer current of the primary transfer means is achieved by the toner image transfer of each color being different.

Claims

Charging means for charging the image carrier, exposure means for forming an electrostatic latent image on the image carrier based on image information, toner is supplied to the electrostatic latent image, and the electrostatic latent image is used as a toner image A plurality of developing means for visualizing, a primary transfer means for sequentially transferring a toner image of each color formed on the image carrier by the developing means onto an intermediate transfer body, and a plurality of color toners transferred onto the intermediate transfer body An image forming apparatus comprising: a secondary transfer means for transferring an image onto a transfer material, wherein the transfer current of the primary transfer means is different for transferring a toner image of each color.

The transfer current of each transfer means is a ratio at which the toner on the image carrier is transferred to the intermediate transfer member, and in the step of causing the toner once transferred to the intermediate transfer member to transfer a toner image of another color to the intermediate transfer member. 2. The image forming apparatus according to claim 1, wherein the ratio is determined based on the ratio of toner remaining on the intermediate transfer member after returning to the image bearing member.

2. The image forming apparatus according to claim 1, wherein the toner requiring the largest amount of transfer current is first formed on an image bearing member, and is primarily transferred onto the intermediate transfer member.

2. The image forming apparatus according to claim 1, wherein the toner having the least transfer current is finally formed on an image bearing member, and primary transfer is performed on the intermediate transfer member.