Sheet processing unit

A sheet processing unit, comprising:

• a taking part for taking sheets one by one from piled sheets,
• a conveying part for conveying the taken sheets, and
• a processing part for carrying out a process to the conveyed sheets,
• the said taking part having:
• a taking unit for generating an absorption force to come in contact with the piled sheets, to generate a taking force and to take the sheets one by one with the taking force,
• a sheet supplying unit for supplying the piled sheets to the taking unit, and
• a movable lever provided on the sheet supplying unit for supporting a front end portion of the piled sheets with respect to a conveying direction,
• a driving unit for giving a driving force in a linear or rotational direction to the movable lever,
• a force controller for controlling the driving force given to the movable lever by the driving unit,
• a detecting unit for detecting a position of the movable lever,
• a sheet supplying unit controller for controlling the sheet supplying unit on the basis of the position of the movable lever detected by the detecting unit, and
• a positioning unit for positioning the movable lever at a predetermined position,
• the positioning unit positioning the movable lever at a position away from the taking unit by a predetermined distance in cooperation with the taking unit when the taking unit generates the absorption force toward the piled sheets.

A sheet processing unit, comprising:

• a taking part for taking sheets one by one from piled sheets,
• a conveying part for conveying the taken sheets, and
• a processing part for carrying out a process to the conveyed sheets,
• the said taking part having:
• a taking unit for generating an absorption force to come in contact with the piled sheets, to generate a taking force and to take the sheets one by one with the taking force,
• a sheet supplying unit for supplying the piled sheets to the taking unit, and
• a movable lever provided on the sheet supplying unit for supporting a front end portion of the piled sheets with respect to a conveying direction,
• a positioning unit for positioning the movable lever at a predetermined position,
• a pressure sensor provided on a surface of the movable lever facing to the piled sheets for detecting a pressure to the piled sheets, and
• a sheet supplying unit controller for controlling the sheet supplying unit on the basis of the pressure detected by the pressure sensor,
• the positioning unit is positioned at a position wherein the sheets are away from the taking unit by a predetermined distance in cooperation with the taking unit when the taking unit generates the absorption force toward the piled sheets.

A sheet processing unit, comprising:

• a taking part for taking sheets one by one from piled sheets,
• a conveying part for conveying the taken sheets, and
• a processing part for carrying out a process to the conveyed sheets,
• the said taking part having:
• a taking unit having a convex portion for pressing the sheets to adjust attitudes of the sheets, and a concave portion for generating an absorption force to come in contact with the sheets, to generate a taking force and to take the sheets one by one with the taking force, said convex portion and said concave portion repeatedly face to the piled sheets by turns,
• a sheet supplying unit for supplying the piled sheets to the taking unit,
• a movable lever provided on the sheet supplying unit for supporting a front end portion of the piled sheets with respect to a conveying direction,
• a driving unit for giving a driving force in a linear or rotational direction to the movable lever,
• a force controller for controlling the driving force given to the movable lever by the driving unit,
• a detecting unit for detecting a position of the movable lever, and
• a sheet supplying unit controller for controlling the sheet supplying unit on the basis of the position of the movable lever detected by the detecting unit, and
• a positioning unit for positioning the movable lever at a predetermined position.

A sheet processing unit, comprising:

• a taking part for taking sheets one by one from piled sheets
• a conveying part for conveying the taken sheets, and
• a processing part for carrying out a process to the conveyed sheets,
• the said taking part having:
• a taking unit having a convex portion for pressing the sheets to adjust attitudes of the sheets, and a concave portion for generating an absorption force to come in contact with the sheets, to generate a taking force and to take the sheets one by one with the taking force, said convex portion and said concave portion repeatedly face to the piled sheets by turns,
• a sheet supplying unit for supplying the piled sheets to the taking unit,
• a pressure sensor provided on a portion of the sheet supplying unit for detecting a pressure from the piled sheets, the portion supporting a front end portion of the piled sheets with respect to a conveying direction, and
• a sheet supplying unit controller for controlling the sheet supplying unit on the basis of the pressure detected by the pressure sensor.