IMAGE FORMING APPARATUS

To provide an image forming apparatus that can accurately correct color shift regardless of an image difference.SOLUTION: An image forming apparatus 100 comprises: an image forming unit 10 that forms images on photoconductor drums 1; an intermediate transfer belt 21 to which the images are transferr...

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Bibliographische Detailangaben
Hauptverfasser: NARITA KAZUYUKI, INUZUKA TOMOYA, TAJIRI TAKESHI, UEKI TOMOTAKA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide an image forming apparatus that can accurately correct color shift regardless of an image difference.SOLUTION: An image forming apparatus 100 comprises: an image forming unit 10 that forms images on photoconductor drums 1; an intermediate transfer belt 21 to which the images are transferred from the photoconductor drums 1; primary transfer units N1 that transfer the images carried on the photoconductor drums 1 to the intermediate transfer belt 21; a secondary transfer unit N2 that transfers the images carried on the intermediate transfer belt 21 to a recording material; an intermediate transfer belt driving unit (113) that rotates the intermediate transfer belt 21; and a control unit (150). The control unit (150) calculates a correction amount for correcting positions when the images are transferred from the photoconductor drums 1 to the intermediate transfer belt 21 based on the torque of the intermediate transfer belt driving unit (113).SELECTED DRAWING: Figure 1 【課題】画像差によらず、色ずれを高精度に補正することができる画像形成装置を提供する。【解決手段】画像形成装置100は、感光ドラム1に画像を形成する画像形成部10と、感光ドラム1から画像が転写される中間転写ベルト21と、感光ドラム1が担持する画像を中間転写ベルト21に転写する一次転写部N1と、中間転写ベルト21が担持する画像を記録材に転写する二次転写部N2と、中間転写ベルト21を回転させる中間転写ベルト駆動部(113)と、制御部(150)と、を備える。制御部(150)は、中間転写駆動部(113)のトルクに基づいて、感光ドラム1から中間転写ベルト21へ画像を転写するときの位置を補正するための補正量を算出する。【選択図】図1