Patent ID: 8356967

Claim:
A stacker for stacking printed materials, said stacker comprising: a first support having a first finger unit having a first pair of fingers and a first finger drive for driving said first pair of fingers between a first finger unit open position and a first finger unit closed position; a second support having a second finger unit having a second pair of fingers and a second finger drive said second pair of fingers between a second finger unit open position and a second finger unit closed position; at least one motor; a drive control for coupling said at least one motor to said first support and said second support, said drive control permitting said at least one motor drive at least one of said first support or said second support at a first speed that is controlled by said at least one motor; a first finger unit drive coupled to said first finger unit for driving said first finger unit between a first finger unit home position and a first finger unit release position; a second finger unit driver coupled to said second finger unit for driving said second finger unit between a second finger unit home position and a second finger unit release position; said drive control controlling said first finger unit driver, said second finger unit driver, said first finger drive of said first finger unit, said second finger drive of said second finger unit, and said at least one motor; said drive control being adapted to energize said at least one motor to drive said first and second supports in a first direction at said first speed that is controlled by said at least one motor and permitting movement in a second direction opposite said first direction at a second speed that is not controlled by said at least one motor.