Paper processing apparatus and image forming system

A paper processing apparatus comprising:

• a supporting member for supporting a paper;
• a pressing member which is disposed to form a space between said pressing member and said supporting member, and approaches and presses a paper bundle inserted into the space;
• a cutting blade which cuts an end portion of the paper bundle pressed by said pressing member;
• a removal member having a front end portion that is movable by a drive to contact the pressing member, when the pressing member is in a position at which the paper bundle is pressed by said pressing member, and remove cutting waste of the paper bundle on the pressing member, the removal member being rotatable by the drive so that the front end portion moves from the cutting blade toward the pressing member to remove the cutting waste;
• a determination control part which determines whether said pressing member is performing an approaching operation for approaching the paper bundle;
• and
• a retreat control part which controls said drive of said removal member to position the front end portion of said removal member at a retreat position apart from said pressing member when said determination control part determines that said pressing member is performing the approaching operation for approaching the paper bundle.

A paper processing apparatus comprising:

• a supporting member for supporting a paper;
• a pressing member which is disposed to form a space between said pressing member and said supporting member, and approaches and presses a paper bundle inserted into the space;
• a cutting blade which cuts an end portion of the paper bundle pressed by said pressing member;
• a removal member having a front end portion that is movable by a drive to contact the pressing member, when the pressing member is in a position at which the paper bundle is pressed by said pressing member, and remove cutting waste of the paper bundle on the pressing member;
• and
• a control unit which controls at least said drive of said removal member, wherein
• said control unit controls said drive of said removal member such that the front end portion is positioned at a retreat position apart from said pressing member during an approaching operation in which said pressing member is approaching the paper bundle, and
• said control unit controls said removal member to perform an operation for removing the cutting waste of the paper bundle during a period from a time before insertion of the paper bundle into the space to a time before start of the approaching operation of said pressing member.