IMAGE FORMING APPARATUS

PROBLEM TO BE SOLVED: To reduce the driving speed of image carriers in a non-image forming period to vibrate a cleaning blade, and thereby dispersing paper powder accumulated on a blade edge and preventing paper powder from entering a space between the cleaning blade and image carriers.SOLUTION: An...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
1. Verfasser: NAMEKI AKIRA
Format: Patent
Sprache:eng ; jpn
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To reduce the driving speed of image carriers in a non-image forming period to vibrate a cleaning blade, and thereby dispersing paper powder accumulated on a blade edge and preventing paper powder from entering a space between the cleaning blade and image carriers.SOLUTION: An image forming apparatus comprises: image carriers that form latent images; a cleaning blade that removes a developer remaining on surfaces of the image carriers; and means that counts the number of cumulative prints or the number of rotations of the image carriers. The image forming apparatus has a mode (paper powder dispersion mode in Examples 1 and 2) of, when the counted value reaches a predetermined value or more in a non-image forming period, driving the image carriers for a predetermined time at a lower speed than the minimum speed of driving speeds used for image formation.SELECTED DRAWING: Figure 4 【課題】非画像形成時に、像担持体の駆動速度を下げることで、クリーニングブレードを振動させ、ブレードエッジに堆積した紙粉を分散させ、クリーニングブレードと像担持体の間に紙粉が侵入することを未然に防ぐ。【解決手段】潜像を形成する像担持体と、像担持体表面の転写残現像剤を除去するクリーニングブレードと、累積印刷枚数または像担持体の回転数をカウントする手段とを備え、カウント値が所定の値以上になったとき、且つ、非画像形成時において、像担持体を画像形成時に用いる駆動速度の内の最小速度よりも遅い速度で所定時間駆動させるモード(実施例1、2における紙粉分散モード)を有すること。【選択図】図4