Sheet conveying device and image forming apparatus therewith

A sheet conveying device comprising:

• a pair of conveying rollers having:
• a driving roller;
• and
• a driven roller in contact with the driving roller with a predetermined pressure to form a nip portion,
• the pair of conveying rollers conveying a sheet;
• and
• a shutter member having:
• a body portion rotatably supported on a rotation shaft of the driving roller, the body portion being formed with a radius substantially equal to a radius of the driving roller;
• and
• a regulating portion protruding radially outward from an outer circumferential edge of the body portion, the regulating portion making contact with a leading end of the sheet moving toward the nip portion upstream of the nip portion along a sheet conveying direction to regulate the leading end of the sheet,
• wherein
• the shutter member is switchable between a first position, in which the shutter member can correct a skew of the sheet with the regulation portion, and a second position, which the shutter member reaches by rotating from the first position and in which the shutter member guides the sheet to the nip portion,
• the regulating portion has:
• a contact surface against which the leading end of the sheet strikes when the shutter member is in the first position;
• and
• a locking portion that is formed at a boundary between the body portion and the contact surface and that locks the leading end of the sheet, and
• n pairs of the shutter members, (where n is an integer of two or more) are disposed symmetrically along a left-right direction from inward to outward along a sheet width direction orthogonal to the sheet conveying direction, an m th pair of shutter members (where m is an integer of one or more but n−1 or less) from inward along the sheet width direction having the locking portion formed radially outward compared to an (m+1)th pair of shutter members adjacent outward along the sheet width direction.