Sheet conveying apparatus

A sheet conveying apparatus comprising:

• a conveying roller configured to convey a sheet in a conveying direction;
• driven rollers arranged with intervals in a width direction intersecting with the conveying direction, the driven rollers being opposed to the conveying roller in a direction perpendicular to the conveying direction and the width direction;
• coil springs provided corresponding to the driven rollers respectively and serving as rotating shafts for rotatably supporting the driven rollers;
• and
• driven roller holders which are provided corresponding to the driven rollers respectively and which retain the coil springs respectively,
• wherein the coil springs include a right-handed twining coil spring and a left-handed twining coil spring,
• wherein one of the right-handed twining coil spring and the left-handed twining coil spring has a first shaft and a first protrusion protruding from an end of the first shaft, and the other of the right-handed twining coil spring and the left-handed twining coil spring has a second shaft and a second protrusion protruding from an end of the second shaft and having a shape different from that of the first protrusion, and
• a driven roller holder, which is included in the driven roller holders and corresponds to a first one of the coil springs having the first protrusion, has a first engaging portion which is engageable with the first protrusion and which is not engageable with the second protrusion, and another driven roller holder, which is included in the drive roller holders and corresponds to a second one of the coil springs having the second protrusion, has a second engaging portion which is engageable with the second protrusion and which is not engageable with the first protrusion.

A sheet conveying apparatus comprising:

• a conveying roller configured to convey a sheet in a conveying direction;
• driven rollers arranged with intervals in a width direction intersecting with the conveying direction, the driven rollers being opposed to the conveying roller in a direction perpendicular to the conveying direction and the width direction;
• coil springs provided corresponding to the driven rollers respectively and serving as rotating shafts for rotatably supporting the driven rollers;
• and
• driven roller holders which are provided corresponding to the driven rollers respectively and which retain the coil springs respectively,
• wherein the coil springs include a right-handed twining coil spring and a left-handed twining coil spring,
• wherein each of the driven roller holders has a first regulating portion and a second regulating portion which are arranged to oppose each other while interposing, in the width direction, one of the driven rollers corresponding thereto,
• each of the first regulating portion and the second regulating portion has a pair of regulating surfaces which are provided to interpose, in the conveying direction, one of the coil springs for supporting the one of the driven rollers corresponding thereto, the pair of regulating surfaces being configured to abut against the one of the coil springs and regulate the one of the coil springs from being inclined with respect to the conveying direction,
• a first regulating surface, which is included in the pair of regulating surfaces of the first regulating portion and disposed on an upstream side in the conveying direction, has a position in the conveying direction different from that of a second regulating surface, which is included in the pair of regulating surfaces of the second regulating portion and disposed on the upstream side in the conveying direction, and
• a third regulating surface, which is included in the pair of regulating surfaces of the first regulating portion and disposed on a downstream side in the conveying direction, has a position in the conveying direction different from that of a fourth regulating surface, which is included in the pair of regulating surfaces of the second regulating portion and disposed on the downstream side in the conveying direction.