SEPARATION ROLLER, SHEET FEEDING APPARATUS AND IMAGE FORMING APPARATUS

• Main Authors: CHIBA YOSHINAO, MURATA KO
• Format: Patent
• Language: English; Japanese
• Published: 12.09.2019
• 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

To improve maintenance performance by avoiding breakage of an outer peripheral part.SOLUTION: A separation roller (112) includes an outer peripheral part (130) made of an elastic material and formed in a cylindrical shape, a core part supporting the outer peripheral part, and a flange part (134) having a plurality of convex parts (140) provided at a plurality of positions in the circumferential direction so as to protrude outward in the radial direction from the core part. In a state where the outer peripheral part is not worn, the outer diameter (r1) of the outer peripheral portion is larger than the outer diameter (r2) of the flange part. The convex part has a first surface extending toward the upstream side in the rotational direction from the rotational axis of the separation roller toward the outside in the radial direction on the side part on the upstream side in the rotation direction when rotating together with a feeding rotary body.SELECTED DRAWING: Figure 7 【課題】外周部の破断を回避して、メンテナンス性を向上する。【解決手段】分離ローラ（１１２）弾性材料によって筒状に形成された外周部（１３０）と、外周部を支持するコア部と、コア部より径方向の外側に突出するように周方向における複数の位置に設けられた複数の凸部（１４０）を有するフランジ部（１３４）とを備える。外周部が摩耗していない状態において、外周部の外径（ｒ１）はフランジ部の外径（ｒ２）より大きい。凸部は、給送回転体に連れ回る際の回転方向における上流側の側部に、分離ローラの回転軸線から径方向の外側に向かうほど回転方向の上流側に延びる第１の面を有する。【選択図】図７