IMAGE FORMING APPARATUS AND PROGRAM

• Main Author: OURA KEISUKE
• Format: Patent
• Language: English; Japanese
• Published: 05.03.2020
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To provide an image forming apparatus that executes cleaning of a secondary transfer roller, the image forming apparatus accurately detecting a deterioration in cleaning performance to prevent an image defect, such as toner contamination, and a program.SOLUTION: An image forming apparatus comprises: an intermediate transfer belt 22; a secondary transfer roller 231; a voltage application unit 234 that applies voltage to the secondary transfer roller; and a control unit 11 functioning as a control unit that executes bias cleaning of applying voltage with the voltage application unit to transfer a toner attached to a surface of the secondary transfer roller to the intermediate transfer belt for removal, a detection unit that detects a toner removal efficiency outside a paper feed area of the secondary transfer roller, and a prediction unit that, on the basis of a difference in deterioration speed between the toner removal efficiency outside the paper feed area of the secondary transfer roller and a removal efficiency inside the paper feed area, predicts the toner removal efficiency inside the paper feed area of the secondary transfer roller.SELECTED DRAWING: Figure 3 【課題】２次転写ローラーのクリーニングを実施する画像形成装置において、クリーニング性の悪化を精度よく検知し、トナー汚れ等の画像不良を抑制可能な画像形成装置及びプログラムを提供する。【解決手段】中間転写ベルト２２と、２次転写ローラー２３１と、２次転写ローラーに電圧を印加する電圧印加部２３４と、電圧印加部によって電圧を印加することにより、２次転写ローラーの表面に付着したトナーを中間転写ベルトに転移させて除去するバイアスクリーニングを実行する制御部、２次転写ローラーの通紙外領域におけるトナー除去効率を検知する検知部、２次転写ローラーの通紙外領域におけるトナー除去効率と通紙内外領域の除去効率悪化速度差とに基づいて、２次転写ローラーの通紙内領域のトナー除去効率を予測する予測部、として機能する制御部１１と、を備える。【選択図】図３