Document storage device for printer

A document storage device, comprising:

• a transmitting roller configured to transmitting a document;
• a document distributing apparatus comprising a first distributing roller, the first distributing roller being configured to receive the document transmitted from the transmitting roller;
• a document storage rack comprising an outside enclosed space and an open space;
• a control unit;
• wherein the first distributing roller is configured to move between a first position and a second position, in the first position, the first distributing roller is aligned to the outside enclosed space and configured to transmit the document into the outside enclosed space;
• in the second position, the first distributing roller is aligned to the open space and configured to transmit the document into the open space, the outside enclosed space can be locked and the open space is readily accessible;
• a controlling pole is connected to the first distributing roller, the control unit is configured to control movements of the controlling pole, and the controlling pole is configured to move the first distributing roller together with the controlling pole, the document distributing apparatus further comprises a second distributing roller, the second distributing roller is connected to a stationary pole, one end of a connection pole is pivotally connected on a middle portion of the controlling pole, and another end of the connection pole is pivotally connected to a bottom end of the stationary pole.