IMAGE FORMATION DEVICE

• Main Authors: MIYAJIMA SOJI, KOYAMA HIROSHI, UEDA TADAYUKI, SHIKI TAKANOBU, ISHIKAWA REMI
• Format: Patent
• Language: English; Japanese
• Published: 07.06.2018
• Subjects: CINEMATOGRAPHY; CONVEYING; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; HOLOGRAPHY; MAGNETOGRAPHY; PACKING; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; STORING; TRANSPORTING

PROBLEM TO BE SOLVED: To provide an image formation device capable of suppressing an occurrence of paper wrinkles and the deviation of an image forming position by correcting offset and bending occurring on a paper, even when a carrier roller is in a nipping state.SOLUTION: An image formation device includes: a first carrier roller (resist roller 43); an upstream side second carrier roller (upstream side loop roller 41) and a downstream side second carrier roller (downstream side loop roller 42) which form loops on a long paper respectively; an offset amount detecting section (offset sensor 46) that detects an offset amount of the long paper; a loop amount detection unit (first loop detection sensor 47, second loop detection sensor 48) that detects two loop amounts in a width direction of the formed loop; and a speed control unit that controls rotation speeds of the upstream side second carrier roller and the downstream side second carrier roller.SELECTED DRAWING: Figure 3 【課題】搬送ローラーがニップした状態であっても、用紙に発生した片寄りや曲りを補正して紙しわの発生や画像形成位置のずれを抑制することが可能な画像形成装置を提供する。【解決手段】第１搬送ローラー（レジストローラー４３）と、長尺紙に各々ループを形成する上流側第２搬送ローラー（上流側ループローラー４１）及び下流側第２搬送ローラー（下流側ループローラー４２）と、長尺紙の片寄り量を検出する片寄り量検出部（片寄りセンサー４６）と、形成されたループの幅方向の２か所のループ量を検出するループ量検出部（第１ループ検出センサー４７、第２ループ検出センサー４８）と、上流側第２搬送ローラー及び下流側第２搬送ローラーの回転速度を制御する速度制御部と、を備える。【選択図】図３