Posture correction device for correcting a posture of conveyed paper-like material and paper-like material processing apparatus provided with a posture correction device

A sheet processing apparatus comprising:

• an insert port configured to accommodate sheet in a lump;
• a take-out mechanism configured to take out sheet accommodated in the insert port one by one sheet;
• a conveying mechanism configured to convey the sheet taken out by the take-out mechanism along the conveying path;
• a detector configured to detect a posture of a sheet, which has a first surface and a second surface in the opposite side of the first surface, conveyed by the conveying mechanism;
• a posture correction mechanism configured to correct the posture of the sheet according to the posture of the sheet detected by the detector;
• and
• a classifying mechanism configured to classify the sheet after the posture has been corrected by the posture correction mechanism according to classification information;
• wherein the posture correction mechanism includes:
• a plurality of roller pairs including a first roller pair contacting with the first surface of the sheet and a second roller pair contacting with the second surface of the sheet to clamp the sheet between the first and second roller pairs and convey the sheet by rotation of the first and second roller pairs;
• a support frame configured to support the first and second roller pair;
• a first driving mechanism, provided away from the support frame, configured to rotate and drive the first roller pair;
• and
• a second driving mechanism configured to tilt the first and second roller pairs simultaneously by a prescribed angle in the conveying direction of the sheet by rotating the support frame.