PAPER FEEDING ROLLER AND PAPER FEEDING DEVICE

• Main Authors: MATSUDA HIROTOSHI, IMAMURA WATARU, YAMAGUCHI KAZUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 17.05.2022
• Subjects: CONVEYING; HANDLING THIN OR FILAMENTARY MATERIAL; HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING

To provide a paper feeding roller and a paper feeding device provided with such a paper feeding roller with which paper transporting failure due to uneven wear is unlikely to occur even if it is used with a cantilever support structure for a long time.SOLUTION: In a paper feeding roller 50, there is a cantilever structure in which a shaft body 51 is supported at one end, an elastic layer 52 comprises a support end 53 and a free end 54 at both ends along the axis of rotation 5A, the outer diameter of the cross section orthogonal to the rotation axis 5A is larger at the free end 54 than at the support end 53, and in the area including the free end 54, along the axis of rotation 5A, there is a hem spread part 57 whose outer diameter widens linearly or inwardly toward the free end 54. And it is equipped with a feed roller that is driven to rotate and transports paper, and a retard roller that is pressed against the feed roller and has a torque limiter attached to suppress double paper feeding. At least either the feed roller or the retard roller is configured as the paper feeding roller 50.SELECTED DRAWING: Figure 5 【課題】片持ち支持構造で長期間使用しても、偏摩耗に起因する用紙の搬送不良が起こりにくい給紙用ローラ、またそのような給紙用ローラを備えた給紙装置を提供する。【解決手段】軸体５１が一端にて支持される片持ち構造を有し、弾性体層５２が、回転軸５Ａに沿って両端に、支持端５３と自由端５４とを備え、回転軸５Ａに直交する断面の外径が、支持端５３よりも自由端５４において大きく、自由端５４を含む領域に、回転軸５Ａに沿って、自由端５４に向かうほど、直線状または内凸状に外径が広がった、裾広がり部５７を有する、給紙用ローラ５０とする。また、回転駆動され、用紙を搬送するフィードローラと、フィードローラに圧接されるとともに、トルクリミッタが取り付けられ、用紙の重送を抑えるリタードローラと、を備え、フィードローラとリタードローラの少なくとも一方が、上記給紙用ローラ５０として構成される、給紙装置とする。【選択図】図５