| 摘要 |
<p>A roller device capable of eliminating a wasteful space by providing a motor and a speed reducer inside or coaxially with a cylindrical roller and capable of manually feeding paper and electronics including a printer using the roller device, the roller device comprising a motor (5), a sun gear (7), and planetary gears (8) disposed in the cylindrical roller (2), a first internal gear (10) provided in the inner surface of the cylindrical roller (2), and a second internal gear (11) provided in the inner surface of a bearing body (12), the bearing body (12) being formed so that the rotation thereof is suppressed by a specified force, whereby the rotating speed of the motor (5) is reduced to rotate the cylindrical roller, and the bearing body is rotated with a force larger than a specified one so as to manually rotate the cylindrical roller.</p> |
