| 摘要 |
PROBLEM TO BE SOLVED: To smoothly carry the rear end surface of a sheet by providing a driven roller for nipping a sheet with a drive roller having a circumferential surface having an axially uniform circular outer diameter in such a manner as to be rotatable about the axial line, and successively forming a plurality of axially extending projections on the circumferential surface. SOLUTION: A plurality of projections 35 formed on the circumferential surface of a driven roller 33b are successively formed at equal intervals with a circumferential angleθ1 so as to extend in the axial direction 61. The radial outer end 35c of each projection 35 is situated on a virtual circle 62 having a uniform outer form in the axial direction 61, and each projection 35 has the same form. The projection 35 has a first inclined surface 35a for pressing the rear end part P1 on the carrying directional 63 upstream side of a sheet P in contact therewith. The inclined surface 53a faces the rotating directional C downstream side of the driven roller 33b. The projection 35 has a second inclined surface 35b which is an inclined back surface facing the rotating directional C upstream side. The sheet rear end surface can smoothly be carried by being pressed by the inclined surface of the projection of the driven roller.
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