Patent ID: 9405272
Filing Date: 2016-08-02
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: a fuser unit including a heat roller and a pressure roller, which heats and pressurizes a sheet on which an unfused toner image is carried and fuses the unfused toner image on the sheet; a duct formed in a long shape in a longitudinal direction along a longitudinal axis of the heat roller, which is disposed in the vicinity of the fuser unit along the longitudinal axis of the heat roller; an exhaust fan provided adjacent to one longitudinal end of the duct; an exhaust port, which is opened in a first side wall of the duct facing the fuser unit and causes the fuser unit and the duct to communicate with each other; and a planar filter which is attached to an inner wall surface of the duct, wherein the planar filter includes, a filter base material having a surface shape in which ditches and convex portions are alternately disposed; and a frame which is bonded to two opposing ends of the filter base material where both ends of each of the ditches and convex portions meet, respectively, wherein the convex portion of the filter base material protrudes from the frame, and wherein the convex portion of the filter base material is bonded or stuck to the inner wall surface.