US 11,720,058 B2
Image forming apparatus having air exhaust system for first and second connected housings
Hiroshi Nojima, Chiba (JP); and Keiko Fujita, Chiba (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Dec. 7, 2021, as Appl. No. 17/544,460.
Claims priority of application No. 2020-207101 (JP), filed on Dec. 14, 2020.
Prior Publication US 2022/0187763 A1, Jun. 16, 2022
Int. Cl. G03G 21/00 (2006.01); G03G 21/20 (2006.01); G03G 15/00 (2006.01); G03G 15/20 (2006.01)
CPC G03G 21/206 (2013.01) [G03G 15/657 (2013.01); G03G 15/2017 (2013.01); G03G 2221/1645 (2013.01)] 6 Claims
OG exemplary drawing
 
1. An image forming apparatus having a first housing that includes an image forming unit configured to form a toner image on a sheet, and a second housing provided on a downstream side with respect to the first housing in a sheet conveyance direction and that includes a fixing unit configured to fix the toner image formed by the image forming unit to the sheet, the image forming apparatus comprising:
a conveyance belt provided in the first housing and configured to convey the sheet on which the toner image is formed by the image forming unit to the fixing unit;
a first intake fan configured to take in air so as to suck the sheet to an outer peripheral surface of the conveyance belt;
a first duct unit provided in the first housing and configured to guide air taken in by the first intake fan to a rear of a rear side plate arranged in the first housing;
a second duct unit provided in the first housing, wherein the second duct unit is used for guiding the air in the rear of the rear side plate to the second housing;
a second intake fan provided in the second housing and configured to take in air in a vicinity of the fixing unit;
a third duct unit provided in the second housing and configured to exhaust the air from the second duct unit and the air taken in by the second intake fan via an exhaust port; and
a filter arranged to the third duct unit and through which the air exhausted from the exhaust port to outside of the image forming apparatus passes.