Sheet feeding device

A sheet feeding device comprising:

• a tray in which sheet-type imaging target media are stacked;
• a transmitting roller that rotates and transmits, upon touching a single imaging target medium that is to be transported among the stacked imaging target media, the touched transportation imaging-target medium to an imaging unit;
• a separating unit that touches, among the stacked imaging target media, a separation imaging-target medium that is not to be transported, separates the separation imaging-target medium by moving the separation imaging-target medium in a direction opposite to the transportation imaging-target medium that is transmitted to the imaging unit by the transmitting roller, and prevents transmission of the separation imaging-target medium to the imaging unit;
• a rotatably driving unit that rotatably drives the transmitting roller;
• a transporting roller that rotates and transports, upon touching the transportation imaging-target medium transmitted by the transmitting roller, the touched transportation imaging-target medium to an imaging position of the imaging target medium formed by the imaging unit;
• a detecting sensor that is set between the transmitting roller and the transporting roller and that detects whether the imaging target media transmitted by the transmitting roller are only the transportation imaging-target media;
• and
• a controlling unit that stops, upon determining that the detected imaging target media include the imaging target media other than the transportation imaging-target media, rotation of at least the transmitting roller via the rotatably driving unit,
• wherein the tray includes a bending unit that bends the stacked imaging target media from a rear to a front end of a transmission direction, in a direction that intersects the transmission direction of the imaging target media by the transmitting roller and reduces a degree of bending of the imaging target media from the rear end to the front end of the transmission direction.