IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To provide an image forming apparatus that can suppress an increase in downtime for maintaining good performance of cleaning an intermediate transfer body.SOLUTION: In an image forming apparatus comprising a contact member 21 that removes a toner from an intermediate transfer b...

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Bibliographic Details
Main Authors HIRAI MASAHIDE, HAMAMOTO RYOSUKE, KUDO YOSHIKI
Format Patent
LanguageEnglish
Japanese
Published 19.01.2017
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Online AccessGet full text

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Summary:PROBLEM TO BE SOLVED: To provide an image forming apparatus that can suppress an increase in downtime for maintaining good performance of cleaning an intermediate transfer body.SOLUTION: In an image forming apparatus comprising a contact member 21 that removes a toner from an intermediate transfer body 8 and second charging means 24 that is arranged on the downstream side of the contact member 21 to charge a toner, and cleaning the intermediate transfer body 8 by transferring a toner remaining on the intermediate transfer body to an image carrier 1 at a primary transfer part N1, during a discharge operation of cleaning the intermediate transfer body 8 with the contact member 21 by discharging a toner attached to second charging means 24 to the intermediate transfer body, the image forming apparatus eliminates electricity from the discharged toner with first charging means 23 arranged on the upstream side of the contact member 21 or charges the discharged toner to have a polarity reverse to a regular charging polarity of the toner.SELECTED DRAWING: Figure 5 【課題】中間転写体の良好なクリーニング性能の維持のためのダウンタイムの増加を抑制できる画像形成装置を提供する。【解決手段】中間転写体8からトナーを除去する当接部材21と、当接部材21の下流側に配置されトナーを帯電させる第2の帯電手段24と、を有し、中間転写体8上の残トナーを1次転写部N1で像担持体1に転移させてクリーニングする構成において、第2の帯電手段24に付着したトナーを中間転写体8に吐き出して当接部材21でクリーニングする吐き出し動作の実行時には、当接部材21の上流側に配置された第1の帯電手段23によって吐き出しトナーを除電するか又はトナーの正規の帯電極性とは逆極性に帯電させる構成とする。【選択図】図5
Bibliography:Application Number: JP20150134804