Image forming apparatus, method for processing information relating to sheet, and recording medium

An image forming apparatus comprising:

• a conveyor that conveys a sheet along a conveyance path;
• a detector that is disposed on the conveyance path and detects a physical property of a sheet with first detection accuracy or second detection accuracy lower than the first detection accuracy;
• an image former that forms an image on a sheet under an image forming condition based on a result of detection performed by the detector with the first detection accuracy;
• a central processing unit (CPU) that determines that a physical property of a sheet has changed among a plurality of sheets that is conveyed by the conveyor along the conveyance path on a basis of a result of detection performed by the detector on the plurality of sheets that is conveyed with the second detection accuracy;
• and
• an operation panel, wherein
• the CPU outputs a determination result to the operation panel or an external apparatus upon determining that a physical property has changed among the plurality of sheets that is conveyed.

A method for processing information relating to a sheet comprising:

• by a conveyor, conveying a sheet along a conveyance path;
• by a detector that is disposed on the conveyance path, detecting a physical property of a sheet with first detection accuracy or second detection accuracy lower than the first detection accuracy;
• forming an image on a sheet under an image forming condition based on a result of detection performed by the detector with the first detection accuracy;
• and
• determining that a physical property of a sheet has changed among a plurality of sheets that is conveyed by the conveyor along the conveyance path on a basis of a result of detection performed by the detector on the plurality of sheets that is conveyed with the second detection accuracy, wherein
• by the conveyor, making conveyance speed at which the detector performs detection with the second detection accuracy faster than conveyance speed at which the detector performs detection with the first detection accuracy.