MANUSCRIPT TRANSPORTATION DEVICE AND IMAGE FORMATION DEVICE HAVING THE SAME

To provide a manuscript transportation device capable of suitably controlling a manuscript transportation speed and an image formation device having the same.SOLUTION: A manuscript transportation device comprises a lift motor 90 (a rotation drive part), a lifting device for lifting a lifting tray using drive force of the lift motor 90, a manuscript transportation part for pulling-in a manuscript on the lifting tray at a predetermined manuscript height position and transporting on a manuscript transportation path, a manuscript detection sensor 64 (manuscript reaching detection means) for detecting an uppermost manuscript among the manuscripts on the lifting tray to reach at the manuscript height position and a control part 7 (manuscript transportation control means), and the control part 7 determines a load of the manuscript on the basis of a rotation amount of the lift motor 90 during the time from a lifting start timing at which the lifting tray starts to ascend from a predetermined height position lower than the manuscript height position to a timing at which the manuscript detection sensor 64 detects the uppermost manuscript reaches at the manuscript height position, and determines the transportation speed of the manuscript by the manuscript transportation part on the basis of the determined load.SELECTED DRAWING: Figure 5 【課題】原稿搬送速度を好適に制御することができる原稿搬送装置及びこれを備えた画像形成装置を提供する。【解決手段】リフトモータ９０（回転駆動部）と、リフトモータ９０の駆動力を用いて昇降トレイを昇降させる昇降装置と、昇降トレイ上の原稿を所定の原稿高さ位置で引き込み、原稿搬送路で搬送する原稿搬送部と、昇降トレイ上の原稿のうち最上層の原稿が原稿高さ位置に到達したことを検知する原稿検知センサ６４（原稿到達検知手段）と、制御部７（原稿搬送制御手段）と、を備えた原稿搬送装置であって、制御部７は、昇降トレイが原稿高さ位置よりも低い所定の高さ位置から上昇を開始した上昇開始タイミングから原稿検知センサ６４が原稿高さ位置への最上層の原稿の到達を検知したタイミングまでの時間におけるリフトモータ９０の回転量に基づいて原稿の積載量を判定し、判定した積載量に基づいて、原稿搬送部による原稿の搬送速度を決定する。【選択図】図５