Patent ID: 9116480
Filing Date: 2015-08-25
Classification: G03G

Abstract:
1. An image forming apparatus for forming a toner image on a recording material, said image forming apparatus comprising: an image forming station configured to form an unfixed toner image on the recording material; a fixing portion, including a heating member and a back-up member configured to cooperate with said heating member to form a nip, for fixing the unfixed toner image on the recording material by heating the recording material having the formed unfixed toner image in the nip while feeding recording material; and an air feeding portion configured to feed air to a non-sheet-passing area of at least one of said heating member and said back-up member, said air feeding portion including a fan configured to feed the air, a duct, including an opening, configured to guide the air fed from said fan through said opening to the non-sheet-passing area, and an adjusting member configured to adjust an opening amount of said opening, wherein said apparatus configured to execute a first air feeding operation with a first opening amount and a first rotational frequency of said fan and a second air feeding operation with a second opening amount different from the first opening amount and a second rotational frequency different from the first rotational frequency, when said fixing portion fixes the images on recording materials having the same widths measured in a direction perpendicular to a feeding direction of the recording materials.