Image forming apparatus, control method for the same, and medium

A control method for an image forming apparatus, the image forming apparatus including:

• an image carrier;
• a transfer roller, the transfer roller and the image carrier defining a transfer nip region between the transfer roller and the image carrier;
• a fuser including:
• a heating rotary body;
• and
• a rotary body, the heating rotary body and the rotary body defining a fusing nip region between the heating rotary body and the rotary body;
• a movable chute disposed between the transfer roller and the fuser in a conveyance direction of the sheet, the movable chute being movable between a first position and a second position;
• and
• a shifter wherein
• the transfer roller is configured to transfer a toner image on the image carrier to a sheet,
• the fuser is configured to fuse the toner image transferred to the sheet,
• the heating rotary body is configured to heat the sheet,
• the movable chute is configured to guide the sheet,
• the shifter is configured to move the movable chute, and
• the image forming apparatus is capable of executing:
• a first mode in which the image forming apparatus locates the movable chute at the first position by not driving the shifter;
• and
• a second mode in which the image forming apparatus locates the movable chute at the second position by driving the shifter,
• the method comprising executing the first mode in a double-sided printing in which printing to a first surface of a particular sheet is performed and then printing to a second surface of the particular sheet is performed, in at least one of
• throughout a period in which the printing to the first surface is performed and in which the particular sheet is nipped by the image carrier and the transfer roller and nipped by the heating rotary body and the rotary body, or
• throughout a period in which the printing to the second surface is performed and in which the particular sheet is nipped by the image carrier and the transfer roller and nipped by the heating rotary body and the rotary body.

A non-transitory and computer-readable medium storing a program executable by a controller of an image forming apparatus, the image forming apparatus including:

• an image carrier;
• a transfer roller, the transfer roller and the image carrier defining a transfer nip region between the transfer roller and the image carrier;
• a fuser including:
• a heating rotary body;
• and
• a rotary body, the heating rotary body and the rotary body defining a fusing nip region between the heating rotary body and the rotary body;
• a movable chute disposed between the transfer roller and the fuser in a conveyance direction of the sheet, the movable chute being movable between a first position and a second position;
• a shifter;
• and
• the controller, wherein
• the transfer roller is configured to transfer a toner image on the image carrier to a sheet,
• the fuser is configured to fuse the toner image transferred to the sheet,
• the heating rotary body is configured to heat the sheet,
• the movable chute is configured to guide the sheet,
• the shifter is configured to move the movable chute,
• the controller is capable of executing:
• a first mode in which the controller locates the movable chute at the first position by not driving the shifter;
• and
• a second mode in which the controller locates the movable chute at the second position by driving the shifter,
• the program is configured to cause the controller to execute the first mode in a double-sided printing in which printing to a first surface of a particular sheet is performed and then printing to a second surface of the particular sheet is performed, in at least one of
• throughout a period in which the printing to the first surface is performed and in which the particular sheet is nipped by the image carrier and the transfer roller and nipped by the heating rotary body and the rotary body, or
• throughout a period in which the printing to the second surface is performed and in which the particular sheet is nipped by the image carrier and the transfer roller and nipped by the heating rotary body and the rotary body.