An image former includes: a transferer that transfers an image onto a sheet; a registration roller provided on an upstream side of the transferer in a sheet conveyance direction; and a hardware processor that controls operation of the registration roller, wherein the hardware processor controls operation of the registration roller so as to execute either one of first operation of abutting a leading edge of the sheet in the conveyance direction against the registration roller and second operation of not abutting the leading edge of the sheet against the registration roller.