Patent ID: 8087670

Claim:
A sheet conveying device including a first rotary member having a surface configured to make an endless movement, a second rotary member having a surface configured to make an endless movement being arranged opposite to the surface of the first rotary member, and a driving unit configured to drive the first rotary member, the sheet conveying device configured to convey a sheet by nipping it in a nip formed by bringing the surface of the first rotary member and the surface of the second rotary member into contact, the sheet conveying device comprising: a sheet-width measuring unit to measure a width of the sheet perpendicular to a direction of conveying the sheet; a sheet position detecting unit to detect the sheet, the sheet position detecting unit being arranged between the sheet-width measuring unit and the first rotary member; and a speed compensating unit to compensate a fluctuation of a rotation speed of the first rotary member occurring when the sheet is fed into the nip, wherein the speed compensating unit is configured to adjust a compensation target value for compensating the fluctuation of the rotation speed of the first rotary member based on the width of the sheet measured by the sheet-width measuring unit, the sheet position detecting unit is configured to send a detection signal to the speed compensating unit, and the speed compensating unit is configured to output the compensation target value after receiving the detection signal.