Sheet processing apparatus, sheet take-out apparatus, and sheet take-out method thereof

A take-out method of a sheet take-out apparatus comprising a supply table to which a sheet bundle is supplied, take-out position detection means for detecting a sheet on an uppermost surface the sheet bundle, supply table drive means for moving up or down up to a take-out position of the sheet on the uppermost surface of the sheet bundle loaded on the supply table on the basis of detection results by the take-out position detection means, handling means for removing adhesion of the sheet bundle loaded on the supply table by the supply table drive means, take-out means for taking out the sheet on the uppermost surface of the sheet bundle, plural sheets take-out prevention means of the sheets taken out by the take-out means, and rest means for resting take-out of the sheets taken out by the take-out means, the method comprising:

• a first step, when the take-out of the sheets is stopped, of detecting it;
• a second step of detecting a take-out end.
• a third step of stopping the take-out means, handling means, plural sheets take-out prevention means and supply table drive means when the take-out end is detected at the second step;
• and
• a fourth step, when the take-out end is not detected at the second step, of controlling upward movement or downward movement of the supply table drive means according to a position of the sheets by the take-out position detection means for detecting the sheet on the uppermost surface of the sheet bundle.