Image forming apparatus that controls an image forming section and a fixing device

摘要

A fixing device includes a fixing belt, a nip pad, a press roller, a driving portion, and a heat generation source. The fixing belt has an endless shape. The nip pad is located on an inner circumferential side of the fixing belt. The nip pad presses the fixing belt. The press roller presses the fixing belt along with the nip pad. The driving portion moves the press roller toward the nip pad. The heat generation source causes the fixing belt to generate heat. A control section controls an image forming section and the fixing device. The nip pad includes a protrusion. The protrusion protrudes toward an outer circumference of the fixing belt and a downstream side of the nip. The control section changes a movement amount of a protrusion to the press roller.

主权项

1. An image forming apparatus comprising:
an input section that allows information regarding a recording medium to be input; an image forming section that forms an image on the recording medium; a fixing device that includes
an endless fixing belt;a nip pad that is located on an inner circumferential side of the fixing belt and presses the fixing belt;a press roller that is located on an outer circumferential side of the fixing belt, and presses the fixing belt along with the nip pad so as to form a nip;a driving portion that moves the press roller toward the nip pad; anda heat generation source that causes the fixing belt to generate heat; and a control section that controls the image forming section and the fixing device, the nip pad includes a protrusion that protrudes toward an outer circumference of the fixing belt and a downstream side of the nip, the control section controls the driving portion on the basis of the information regarding the recording medium input by the input section so as to change a movement amount of the protrusion to the press roller, the nip pad is moved centering on the same axis as an axis of a center of a reference trajectory, and the fixing belt forms the reference trajectory when viewed from a belt width direction of the fixing belt.