JP2003295623A5

JP2003295623A5 -

Info

Publication number: JP2003295623A5
Application number: JP2002095764A
Authority: JP
Filing date: 2002-03-29
Publication date: 2005-06-02
Anticipated expiration: 2022-03-29

Description

また、本発明に従って、画像形成装置に着脱可能に構成され、且つ画像形成装置に装着された状態において、潜像担持体上に形成された潜画像を現像剤で顕在化し、得られた画像を中間転写ベルトに一次転写バイアスの印加下で一次転写し、該中間転写ベルトに一次転写された画像を二次転写バイアスの印加下で転写材に二次転写し、更に該二次転写後に該中間転写ベルトに残留している現像剤を一次転写時とは逆の極性に帯電させることで、中間転写ベルトから該潜像担持体に静電的に転写させて該中間転写ベルトのクリーニングを行うものである中間転写ベルト−潜像担持体一体型カートリッジであって、
該中間転写ベルトと、該潜像担持体と、二次転写後に該中間転写ベルトに残留している現像剤を一次転写時の現像剤の極性とは逆の極性に帯電させる手段とが一体に、且つ該潜像担持体と該手段とが、該中間転写ベルトに当接するように保持されており、また該中間転写ベルトは、少なくとも熱可塑性樹脂と抵抗制御剤とを含み、水溶性成分量が２．５質量％以下であり、体積抵抗率が１×１０ ⁶ Ω・ｃｍ〜８×１０ ¹³ Ω・ｃｍであることを特徴とする中間転写ベルト−潜像担持体一体型カートリッジが提供される。 Further, according to the present invention, the latent image formed on the latent image carrier is made visible with a developer in a state where it is configured to be detachable from the image forming apparatus and mounted to the image forming apparatus. The image is primary transferred to an intermediate transfer belt under application of a primary transfer bias, and the image primarily transferred to the intermediate transfer belt is secondarily transferred to a transfer material under application of a secondary transfer bias, and the intermediate transfer belt is further subjected to the intermediate transfer. The intermediate transfer belt is cleaned by electrostatically transferring the developer remaining on the transfer belt from the intermediate transfer belt to the latent image carrier by charging the developer to the opposite polarity to that during primary transfer. An intermediate transfer belt-latent image carrier integrated type cartridge,
The intermediate transfer belt, the latent image carrier, and means for charging the developer remaining on the intermediate transfer belt after secondary transfer to the polarity opposite to the polarity of the developer at the time of primary transfer are integrated. And the latent image carrier and the means are held in contact with the intermediate transfer belt, and the intermediate transfer belt includes at least a thermoplastic resin and a resistance control agent, and the amount of the water-soluble component And a volume resistivity of 1 × 10 ⁶ Ω · cm to 8 × 10 ¹³ Ω · cm, wherein the intermediate transfer belt-latent image carrier integrated type cartridge is provided. Ru.

Claims

In an electrophotographic image forming apparatus in which a latent image formed on a latent image carrier is manifested with a developer and the obtained image is transferred to a transfer material using a belt-like transfer member, the belt-like transfer member is at least Characterized by containing a thermoplastic resin and a resistance control agent, having a water-soluble component amount of 2.5 mass% or less, and having a volume resistivity of 1 × 10 ⁶ Ω · cm to 8 × 10 ¹³ Ω · cm Image forming device.

The image forming apparatus according to claim 1, wherein an amount of a water-soluble component of the belt-like transfer member is 0.8% by mass or less.

The image forming apparatus according to claim 1, wherein the resistance control agent is selected from the group consisting of a thermoplastic resin, a surfactant and a metal salt.

Wherein a belt-like transfer member is an intermediate transfer belt, the image forming apparatus, an image developed on the latent image carrier from the primary transfer process and the intermediate transfer belt for temporarily transferred to the intermediate transfer belt to the transfer material to the image The developer remaining on the intermediate transfer belt after the secondary transfer is charged to the polarity opposite to the polarity of the developer at the time of the primary transfer, and simultaneously with the primary transfer from the intermediate transfer belt. The image forming apparatus according to any one of claims 1 to 3, further comprising a mechanism for returning to the latent image carrier.

Wherein a belt-shaped member is the transfer conveyance belt, the image forming apparatus, supporting a transfer material by said transfer conveyor belt, while conveying, by applying a voltage in contact with said image bearing member and said transfer medium, said the image forming apparatus according to claim 1 for transferring an image on the latent image carried on the transfer material.

A belt-like transfer member for use in an electrophotographic image forming apparatus for transferring an image formed on a latent image carrier to a transfer material, comprising a thermoplastic resin and a resistance control agent, and having a water-soluble component amount of 2 And a belt-like transfer member having a volume resistivity of 1 × 10 ⁶ Ω · cm to 8 × 10 ¹³ Ω · cm.

In the electrophotographic image forming method, the latent image formed on the latent image carrier is visualized with a developer, and the obtained image is transferred to a transfer material using a belt-like transfer member, wherein the belt-shaped transfer member Characterized by containing at least a thermoplastic resin and a resistance control agent, having a water-soluble component amount of 2.5 mass% or less, and having a volume resistivity of 1 × 10 ⁶ Ω · cm to 8 × 10 ¹³ Ω · cm Image forming method.

The latent image formed on the latent image carrier is realized with a developer when the image forming apparatus is configured to be detachable from the image forming apparatus and mounted to the image forming apparatus, and the obtained image is transferred onto the intermediate transfer belt as a primary transfer. Primary transfer is performed under application of a bias, and the image transferred to the intermediate transfer belt is secondarily transferred onto a transfer material under application of a secondary transfer bias, and remaining on the intermediate transfer belt after the secondary transfer An intermediate transfer belt for electrostatically transferring the developer from the intermediate transfer belt to the latent image carrier by charging the developer to a polarity opposite to that at the time of primary transfer; The latent image carrier integrated type cartridge
The intermediate transfer belt, the latent image carrier, and means for charging the developer remaining on the intermediate transfer belt after secondary transfer to the polarity opposite to the polarity of the developer at the time of primary transfer are integrated. And the latent image carrier and the means are held in contact with the intermediate transfer belt, and the intermediate transfer belt includes at least a thermoplastic resin and a resistance control agent, and the amount of the water-soluble component Is 2.5 mass% or less, and volume resistivity is 1 × 10 ⁶⁶ Ω · cm ~ 8 × 10 ¹³¹³ An intermediate transfer belt-latent image carrier integrated cartridge characterized by Ω · cm.