Disclosed an image forming apparatus to perform image forming processing based on a print job, which image forming apparatus including: a storage section to store obverse side information indicating an attribute specific to an obverse side of a sheet and reverse side information indicating an attribute specific to a reverse side of the sheet; and a control section to perform image forming processing on the obverse side of the sheet in an image forming condition according to the obverse side information stored in the storage section, and to perform image forming processing on the reverse side of the sheet in an image forming condition according to the reverse side information stored in the storage section, when image forming processing is performed on both sides of the sheet based on the print job.