SHEET CONVEYANCE DEVICE AND IMAGE FORMING DEVICE

To reduce a delay in sheet conveyance.SOLUTION: A sheet conveyance device includes: a pair of conveyance rollers; a reference member; a pair of oblique conveyance rollers; detection means for detecting the position in the sheet width direction on side ends of a sheet; change means for changing at le...

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Bibliographische Detailangaben
Hauptverfasser: SUZUKII YASUJI, NUMATA YOSHIYA, IWAMI SHINGO, CHIBA YOSHINAO, INUI YUMA
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To reduce a delay in sheet conveyance.SOLUTION: A sheet conveyance device includes: a pair of conveyance rollers; a reference member; a pair of oblique conveyance rollers; detection means for detecting the position in the sheet width direction on side ends of a sheet; change means for changing at least one of the pair of conveyance rollers and the pair of oblique conveyance rollers in a holding state for conveying by holding the sheet and a non-holding state for releasing the holding of the sheet; and control means. The control means changes the start timing of a second conveyance operation based on the detection result of the detection means so that the start timing of the second conveyance operation in the case where the distance in the sheet width direction from the position of the side ends of the sheet detected by the detection means before start of the second conveyance operation is a first length becomes earlier than the start timing of the second conveyance operation in the case where the distance is a second length shorter than the first length.SELECTED DRAWING: Figure 10 【課題】シートの搬送遅れを低減する。【解決手段】シート搬送装置は、搬送ローラ対と、基準部材と、斜送ローラ対と、シートの側端のシート幅方向における位置を検知する検知手段と、搬送ローラ対及び斜送ローラ対の少なくとも一方を、シートを挟持して搬送する挟持状態と、シートの挟持が解除される非挟持状態とに変更する変更手段と、制御手段と、を有する。制御手段は、第2搬送動作の開始前に検知手段により検知されたシートの側端の位置から基準部材までのシート幅方向の距離が第1の長さである場合の第2搬送動作の開始タイミングが、距離が第1の長さより短い第2の長さである場合の第2搬送動作の開始タイミングより早くなるように、検知手段の検知結果に基づいて第2搬送動作の開始タイミングを変更する。【選択図】図10