Patent ID: 9141085
Filing Date: 2015-09-22
Classification: G03G

Abstract:
1. An image-forming apparatus defining a vertical direction extending from a top to a bottom of the image-forming apparatus in its intended orientation, the image-forming apparatus comprising: a fuser assembly including a heating roller and a pressure roller for heating and pressurizing paper, on which a non-fixed image is applied and fixed, the fuser assembly extending in a longitudinal direction that is orthogonal to the vertical direction, the image-forming apparatus further defining a horizontal direction that is orthogonal to both the vertical direction and the longitudinal direction; a duct located in the vicinity of the fuser assembly to extend in the longitudinal direction in parallel to the fuser assembly, and air in the duct is exhausted by an exhaust fan located at an end of the duct in the longitudinal direction; an exhaust outlet located on a first side wall of the duct, the first side wall being orthogonal to the horizontal direction and located diagonally above the fuser assembly in the image-forming apparatus in its intended orientation, the exhaust outlet being provided to receive an exhaust air from the fuser assembly into the duct; and a plane filter attached to a duct ceiling surface of the duct, the duct ceiling surface extending along the longitudinal direction of the duct and being covered by the plane filter; wherein a surface of the filter includes a concave-convex surface including a plurality of elongate groove portions and a plurality of elongate projecting portions, which extend in parallel with each other and orthogonally to the longitudinal direction of the duct, and the plurality of elongate groove portions and the plurality of elongate projecting portions are alternately arrayed along the longitudinal direction of the duct.