Intermittent drive mechanism for copy stacking

A stacking apparatus for sheet media including an intermittent drive means comprising a drive wheel with a first circumferential portion at a proximal radius, and a second circumferential portion at a distal radius, said distal radius being greater than said proximal radius, said distal radius being chosen so as to form a nip with a guiding means thereby providing a driving period of the sheet media during rotation of said drive wheel, said proximal radius being chosen so as to not form a nip with said guiding means thereby providing a relaxation period for the sheet during rotation of said drive wheel;

• a first lower recess in a path of the sheet media subsequent to said intermittent drive means to receive a trailing edge of a first sheet media of a first length thereby not obstructing the leading edge of subsequent sheet media;
• nudging means in said path of the sheet media prior to said intermittent drive;
• and
• a second lower recess in said path of the sheet media prior to said nudging means to receive a trailing edge of the first sheet media of a second length, said second length being greater than said first length, thereby not obstructing the leading edge of a subsequent sheet media.