Patent ID: 9529308
Filing Date: 2016-12-27
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: a fixing rotator rotatable in a predetermined direction of rotation; an opposed rotator pressed against the fixing rotator to form a fixing nip therebetween, through which a recording medium bearing a toner image is conveyed; a heater inside the fixing rotator to heat the fixing rotator; a temperature sensor contacting the opposed rotator to detect a temperature of the opposed rotator; a conveyor to convey the recording medium to the fixing nip; a driver to drive the conveyor; and a controller operatively connected to the temperature sensor and the driver; the controller controls the driver to drive the conveyor to convey the recording medium to the fixing nip or delays conveyance of the recording medium based on the temperature of the opposed rotator detected by the temperature sensor; the controller detects a change in the detected temperature of the opposed rotator per unit time, and determines whether the change in the detected temperature reaches a predetermined threshold; when the controller determines that the change in the detected temperature is equal to or less than the predetermined threshold, the controller calculates a difference between the detected temperature of the opposed rotator and a reference temperature defining a temperature at which the controller allows the driver to drive the conveyor to convey the recording medium, and adds the difference to the detected temperature of the opposed rotator to obtain a corrected detected temperature of the opposed rotator; the controller allows the driver to drive the conveyor or causes the driver to be ready to drive the conveyor based on the corrected detected temperature.