Image forming apparatus and method thereof

An image forming apparatus, comprising:

• a main body having a paper feeding path;
• a printing unit provided inside the main body to form an image on paper which moves along the paper feeding path;
• a fixing unit to fix the image formed on the paper by the printing unit to the paper;
• a discharge roller to feed the paper toward a front panel of the main body and discharge the paper to an exterior of the main body;
• and
• a discharge reversal roller mounted rotatably in forward and reverse directions at a rear of the discharge roller to reverse a moving direction of the paper fed from the fixing unit to feed the paper to the discharge roller.

A method of feeding a printing medium within an image forming apparatus having a main body, the method comprising:

• feeding the printing medium to a printing unit to print an image on a first side thereof at a first side of the main body;
• re-feeding the printing medium to the printing unit a second time to print another image on a second side thereof;
• and
• discharging the printing medium outside the main body at the first side thereof.

A method of feeding a printing medium within an image forming apparatus having a main body, the method comprising:

• feeding the printing medium to a printing unit adjacent to a first side of the main body to print an image on the printing medium;
• feeding the printing medium to a second side of the main body after the image has been printed on the printing medium;
• and
• reversing a moving direction of the printing medium to discharge the printing medium outside the main body.