Image forming apparatus

An image forming apparatus comprising:

• a transferer provided to transfer a toner image on an image carrier onto a sheet, and facing the image carrier;
• a fixer provided to fix the toner image on the sheet;
• and
• a controller provided to apply transfer voltage for transferring the toner image onto the sheet, wherein
• the transferer is provided to define a transfer nip for passing the sheet between the image carrier and the transferer,
• the fixer includes a heating portion and a pressing portion, and is provided to pass the sheet that has passed through the transfer nip through a fixing nip between the heating portion and the pressing portion, and
• the controller is provided to control the transfer voltage in such a way that transfer current flowing through the transfer nip is made constant at a setting value, and is provided to increase the setting value of transfer current after a leading end of the sheet passes through the transfer nip and before the leading end of the sheet passes through the fixing nip.