Document feeder and image forming apparatus

A document feeder comprising:

• a document transport path to direct a document toward an image reading position where an image reader to read an image is located;
• a document stacking tray to stack the document to be supplied to the document transport path;
• a document discharging tray to dispose the document discharged from the document transport path;
• a paper feeder to supply the document stacked on the document stacking tray to the document transport path one paper at a time;
• a first transporter having a plurality of first transport rollers to transport the document supplied to the document transport path toward the image reading position, the plurality of first transport rollers being located at a downstream position in a transport direction of the document in the first transporter;
• a second transporter having a plurality of second transport rollers to transport the document in which the image has been read toward the document discharging tray while supplying the document transported by the first transporter to the image reading position, the plurality of second transport rollers having shafts that are respectively different from shafts of the plurality of first transport rollers, and being provided on a further downstream position compared with the plurality of first transport rollers;
• a first frame to support one axial end of each of the plurality of first transport rollers and each of the plurality of second transport rollers;
• a second frame to support the other axial end of each of the plurality of first transport rollers and each of the plurality of second transport rollers;
• a first driving source provided on the first frame;
• a first driver provided on the first frame and to transmit a rotational force generated by the first driving source to the paper feeder and the first transporter as a driving force using a first belt or a first gear;
• a second driver provided on the second frame and to transmit the rotational force generated by the first driving source to the second transporter as a driving force using a second belt or a second gear;
• and
• a relay transmission rod provided across the first frame and the second frame to transmit the rotational force generated by the first driving source to a side of the second frame.