SHEET FOLDING DEVICE, IMAGE FORMING SYSTEM INCORPORATING THE SHEET FOLDING DEVICE, AND SHEET FOLDING METHOD USING THE SHEET FOLDING DEVICE AND THE IMAGE FORMING SYSTEM

摘要

A sheet folding device, which is included in an image forming system and uses a sheet folding method, includes first and second drive motors, a first sheet conveyor driven by the first drive motor and configured to receive and convey a sheet toward a downstream side of a sheet conveying direction, a second sheet conveyor driven by the second drive motor and configured to receive the sheet conveyed from the first sheet conveyor and to convey the sheet to the downstream side of the sheet conveying direction, and a controller configured to fold the sheet to a predetermined folding length set according to an amount of conveyance of the sheet by the second sheet conveyor while the sheet is being held between the first and second sheet conveyors, and to perform a feedback control with an integral gain to the second drive motor.