| 摘要 |
<p>PURPOSE:To prevent the springing out of a sheet from a paper feed cassette, the bending of the sheet, or an abnormal sound by braking the rotation by a spring for rotating and energizing a reverse roller by a braking means. CONSTITUTION:When two or more sheets are sent between a feed roller 25 and a reverse roller 26 in the state where the limit torque of a torque limiter 27 and the reversing spring force of a reverse roller reversing spring 43 are well-balanced to each other, and a torque limiter outer cylinder 27D and a torque limiter middle shaft 27C are laid in the sliding contact state on a torque limiter frictional surface 27A, the reverse roller 26 is reversely rotated by the reversing spring force of the reverse roller reversing spring 43. An eccentric cam 26B is then rotated counterclockwise, and the piston 52 of an oil damper 51 is pressed to the right to give a rotation resistance to the reverse roller 26 by the eccentric cam 26B. Thus, the reverse roller can not be reversely rotated with force, and sheets can be relatively moderately returned to the paper feed cassette side.</p> |
