| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet feeder that can obtain excellent skew correcting capability without reference of the rigidity (firmness) of a sheet and improve the productivity of a product by a small sheet interval.SOLUTION: In a sheet conveyance device in which the front end part of a sheet P conveyed by a before-registration roller pair 22 abuts on a registration roller pair 23 to correct a skew of the sheet P, the registration roller pair 23 have a plurality of drive rollers 25a, 25b which are driven to rotate respectively by a rotational differential gear 24 which has a rotational difference due to a sheet flexural tension difference generated owing to a skew of the sheet P between a nip part N1 of the registration roller pair 23 and a nip part N2 between a secondary transfer inner roller 34 and a secondary transfer outer roller 35. |
