Image forming apparatus and method to convey printing medium

A method of conveying a printing medium of an image forming apparatus, the method comprising:

• conveying a printing medium, which is picked up one by one, to a rotating conveyance roller;
• and
• pressing the printing medium, arrived at the conveyance roller, in a normal direction of a surface of the conveyance roller by use of a plurality of pressure rollers arranged around the conveyance roller along a rotating direction of the conveyance roller, to convey the pressed printing medium to a printing engine.

An image forming apparatus comprising:

• a device having a pair of rollers disposed opposite with respect to a printing medium conveyance path to convey a printing medium;
• and
• a conveyance roller and a plurality of pressure rollers disposed opposite with respect to the printing medium conveyance path to further convey the printing medium.