Patent ID: 7581727

Claim:
A recording medium conveying device comprising: a feeding roller that feeds a recording medium; a conveying guide that guides the recording medium, fed by the feeding roller, in a U-shape; a conveying roller that conveys the recording medium passing through the conveying guide toward a target position; a driving unit that drives the feeding roller and the conveying roller; and a controller that is operable to: detect a first operation amount of the driving unit when the feeding roller or the conveying roller is driven without the recording medium; detect a second operation amount of the driving unit when the feeding roller feeds the recording medium; estimate a conveyance load borne on the recording medium based on a difference between the first operation amount and the second operation amount at a time after a start of feeding the recording medium and before an arrival of the record medium at the conveying roller; and generate an operation amount of the driving unit to drive the conveying roller based on the estimated conveyance load.