Image forming apparatus

An image forming apparatus comprising:

• an inverting unit that inverts a sheet by causing the sheet to pass through an inverting path when an image forming process for forming images on both sides of the sheet is performed;
• an image forming unit that forms an image on a second or later side of the sheet based on image data for the first side and forms an image on a third or later side of the sheet based on image data for the second side;
• a controller that starts the image forming process upon receiving print data as a target to be printed on specific paper, and inverts a sheet fed from a sheet feeding unit once or more by the inverting unit;
• and
• a converting unit that, when the sheet fed from the sheet feeding unit is the specific paper, converts the print data for the first side which is received as the target to be printed on the specific paper into image data for an N-th side where N≥2 and transfers the image data for the N-th side to the image forming unit.