Image forming apparatus, method for controlling image forming apparatus, and non-transitory computer readable medium

A method for controlling an image forming apparatus, the method comprising:

• conveying a first sheet with a first wireless tag along a conveyance path;
• acquiring a plurality of first strengths for radio signals received from the first wireless tag during the conveyance of the first sheet;
• acquiring a plurality of second strengths of radio signals received from a second wireless tag of second sheet of a first sheet storage unit during the conveyance of the first sheet;
• determining a threshold value for distinguishing a sheet being conveyed along the conveyance path from a sheet not being conveyed along the conveyance path based on the acquired first and second strengths;
• and
• conveying a third sheet and writing information to a third wireless tag of the third sheet when a third strength of a radio signal received from the third wireless tag equals or exceeds the determined threshold value.

A non-transitory computer readable medium storing a program that when executed causes an image forming apparatus to perform a method comprising:

• conveying a first sheet along a conveyance path;
• acquiring a plurality of first radio signal strengths from a first wireless tag on the first sheet during the conveyance of the first sheet along the conveyance path;
• acquiring a plurality of second radio signal strengths from wireless tags on sheets not being conveyed along the conveyance path during the conveyance of the first sheet;
• determining a threshold value of radio signal strength for distinguishing a wireless tag on a sheet being conveyed along the conveyance path from wireless tags on sheets not being conveyed along the conveyance path based on the acquired first and second radio signal strengths;
• and
• conveying a second sheet and then writing information to a second wireless tag on the second sheet when a radio signal strength from the third wireless tag is equal to or exceeds the threshold value.