TRANSFER DEVICE AND IMAGE FORMING APPARATUS

• Main Author: YAMAURA MASAAKI
• Format: Patent
• Language: English; Japanese
• Published: 28.04.2016
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To suppress transfer failure of a visible image.SOLUTION: There is provided an image forming apparatus (U) including: image holding bodies (Py to Pk); an intermediate transfer body (B) that is rotatable and opposite to the image holding bodies (Py to Pk); a first transfer part (Q3) that transfers images on the image holding bodies (Py to Pk) to the surface of the intermediate transfer body (B); a second transfer part (Q4) that is arranged on the downstream side of the first transfer part (Q3) in the direction of rotation of the intermediate transfer body (B) to transfer a visible image on the intermediate transfer body (B) to a medium (S); an opposing member (2) that is arranged on the upstream side of the second transfer part (Q4) to be opposite to the intermediate transfer body (B); and voltage application means (Ef) for applying an alternating voltage (V3a) in which polarity is switched to form an alternating electric field between the intermediate transfer body (B) and the opposing member (2).SELECTED DRAWING: Figure 3 【課題】可視像の転写不良を抑制すること。【解決手段】像保持体（Ｐｙ〜Ｐｋ）と、回転可能且つ像保持体（Ｐｙ〜Ｐｋ）と対向する中間転写体（Ｂ）と、像保持体（Ｐｙ〜Ｐｋ）上の像を中間転写体（Ｂ）の表面に転写される第１転写部（Ｑ３）と、第１転写部（Ｑ３）よりも中間転写体（Ｂ）の回転方向の下流側で、媒体（Ｓ）に中間転写体（Ｂ）上の可視像が転写される第２転写部（Ｑ４）と、第２転写部（Ｑ４）の上流側に配置されて、中間転写体（Ｂ）に対向する対向部材（２）と、極性が切り替わる交番電圧（Ｖ３ａ）を印加し中間転写体（Ｂ）と対向部材（２）との間に交番電界を形成する電圧印加手段（Ｅｆ）と、を備えた画像形成装置（Ｕ）。【選択図】図３