Duplex ADF mechanism

A duplex feed mechanism, comprising:

• an auto-document feedpath having an input, an output, a simplex portion and a duplex portion;
• a motor driving a plurality of rollers within said auto-document feedpath;
• said plurality of rollers including an exit nip roll and a corresponding exit nip idler, the exit nip roll and exit nip idler being disposed adjacent an end of the auto-document feedpath;
• one of said exit nip rollers having a first position wherein said nip is substantially closed and a second position where said nip is open;
• said exit nip idler being movable by a cam;
• said cam being actuated by changing direction of said motor;
• a duplex delivery nip disposed within said duplex portion of said auto-document feedpath;
• and
• a drive roller in feeding cooperation with a duplex delivery idler at a first location and an exit delivery idler at a second location, the duplex delivery idler being moveable from a first position engaging said drive roller to a second position disengaged from said drive roller.

A duplex feed mechanism, comprising:

• an auto-document feedpath having an input, an output, a simplex portion and a duplex portion;
• a motor driving a plurality of rollers within said auto-document feedpath;
• said plurality of rollers including an exit nip roll and a corresponding exit nip idler, the exit nip roll and exit nip idler being disposed adjacent an end of the auto-document feedpath;
• one of said exit nip rollers having a first position wherein said nip is substantially closed and a second position where said nip is open;
• said exit nip idler being movable by a cam;
• said cam being actuated by changing direction of said motor;
• a duplex delivery nip disposed within said duplex portion of said auto-document feedpath;
• and
• a drive roller in feeding cooperation with a duplex delivery idler at a first location and an exit delivery idler at a second location, the duplex delivery idler being moveable by a cam assembly from a first position engaging said drive roller to a second position disengaged from said drive roller.

A duplex feed mechanism comprising:

• an auto-document feedpath having an input, an output, a simplex portion and a duplex portion;
• a motor driving a plurality of rollers within said auto-document feedpath;
• said plurality of rollers including an exit nip roll and a corresponding exit nip idler, the exit nip roll and exit nip idler being disposed adjacent an end of the auto-document feedpath;
• one of said exit nip rollers having a first position wherein said nip is substantially closed and a second position where said nip is open;
• said exit nip idler being movable by a cam;
• said cam being actuated by changing direction of said motor;
• a duplex delivery nip disposed within said duplex portion of said auto-document feedpath;
• and
• a drive roller in feeding cooperation with a duplex delivery idler at a first location and an exit delivery idler at a second location, the duplex delivery idler being moveable by a cam assembly from a first position engaging said drive roller to a second position disengaged from said drive roller, and
• the duplex delivery idler being moved by a two-stage clutch mechanism.

A duplex auto-document feed mechanism comprising:

• an auto-document feedpath including a first simplex portion and a second duplex portion;
• an exit nip disposed adjacent an end of the auto-document feedpath having a first roller and a second roller;
• one of said first roller and said second roller moveable from a first position to a second position during a direction change of a motor;
• said duplex feedpath being shorter than a length of media so that said first and second rollers are spaced apart when a leading edge and a trailing edge are positioned within said exit nip;
• wherein said first and second rollers are closed when receiving media from a simplex media feed and open during a duplex media feed;
• and
• a two-stage clutch mechanism for actuating a pick mechanism.