Device for sorting copied papers

A device for sorting copied papers discharged from a copy machine according to page numbers thereof comprising:

• a casing having an attachment adapted to removably attach the device to the paper outlet of said copy machine;
• a guide plate pivotably mounted on a pivot pin fixed to said casing at its one end adjacent said paper outlet of the copy machine;
• a feed motor mounted on said pivotably mounted guide plate;
• a first paper-feed roller mounted on the other end of said pivotably mounted guide plate and driven by said feed motor via a belt, said first paper-feed roller being located at a distance from said pivot pin which is greater than the distance from said pivot pin at which said feed motor is located;
• a second paper-feed roller disposed to contact with and follow said first paper-feed roller;
• a lift motor adapted to pivot said guide plate in a stepwise manner via a pulley fixed to a shaft of said lift motor and a wire fixed at its one end to said guide plate and its other end to said pulley;
• and
• a plurality of trays each provided at its one end adjacent said guide plate with a stacker for arranging copied papers and at its other end with a rib adapted to adjust a space between adjacent trays,
• wherein during pivoting of said guide plate, said feed motor and said paper-feed rollers rotate along respective arcs relative to said pivot pin.