Patent ID: 7792448
Filing Date: 2010-09-07
Classification: G03G

Abstract:
1. An image forming apparatus for forming an image on a recording material, comprising: an image forming portion for forming an unfixed image on the recording material; a fixing portion having a fixing nip portion which heats and fixes the unfixed image onto the recording material; and a discharge roller which discharges the recording material that has passed through the fixing nip portion toward a tray, wherein, if the recording material is plain paper in which a size in a direction which perpendicularly crosses a conveying direction is smaller than a predetermined size, the fixing portion conveys the plain paper at a speed lower than in the case where the recording material is plain paper in which a size in the direction which perpendicularly crosses the conveying direction is equal to or larger than the predetermined size, wherein a length of conveying path between the fixing nip portion and the discharge roller is smaller than a length in the conveying direction of the plain paper smaller than the predetermined size, and wherein, in the case where the recording material is plain paper which is equal to or larger than the predetermined size, the discharge roller conveys the plain paper at a predetermined speed, and in the case where the recording material is plain paper smaller than the predetermined size, the discharge roller conveys the plain paper at a first speed until a rear edge in the conveying direction of the plain paper passes through the fixing nip portion, and the discharge roller conveys the plain paper at a second speed higher than the first speed after the rear edge in the conveying direction of the plain paper has passed through the fixing nip portion.