US 12,474,671 B2
Image forming apparatus including air duct
Hiroshi Nojima, Tokyo (JP); and Keiko Fujita, Chiba (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 25, 2024, as Appl. No. 18/783,560.
Application 18/783,560 is a continuation of application No. 18/185,497, filed on Mar. 17, 2023, granted, now 12,078,957.
Claims priority of application No. 2022-054094 (JP), filed on Mar. 29, 2022.
Prior Publication US 2024/0402646 A1, Dec. 5, 2024
Int. Cl. G03G 21/00 (2006.01); F24F 13/00 (2006.01); F24F 13/24 (2006.01); G03G 21/20 (2006.01)
CPC G03G 21/206 (2013.01) [F24F 13/24 (2013.01); F24F 2013/242 (2013.01); G03G 2221/1645 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an image forming unit configured to form an image on a recording material;
a fan configured to generate an air current;
a duct including:
an air intake port through which air flows into the duct;
an air discharge port through which air in the duct is discharged;
a body portion having a tubular shape and forming an air passage of the air current from the air intake port to the air discharge port; and
a first holed portion where a plurality of first through holes are formed, the first holed portion being provided along at least a part of the air passage; and
a noise absorbing member attached to the first holed portion so as to cover the plurality of first through holes, the noise absorbing member having a noise absorbing property,
wherein the body portion includes a second holed portion disposed to face the first holed portion interposing the air passage, a plurality of second through holes being formed on the second holed portion, and
wherein the plurality of second through holes are formed so as not to overlap with the plurality of first through holes when viewed in a direction in which the plurality of first through holes penetrates in the first holed portion.