US 11,835,876 B2
Image forming apparatus having removable duct and filter
Ryoichi Kawasumi, Toride (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Feb. 28, 2020, as Appl. No. 16/805,221.
Application 16/805,221 is a continuation of application No. PCT/JP2018/032791, filed on Aug. 29, 2018.
Claims priority of application No. 2017-164082 (JP), filed on Aug. 29, 2017.
Prior Publication US 2020/0201239 A1, Jun. 25, 2020
Int. Cl. G03G 21/00 (2006.01); G03G 21/20 (2006.01)
CPC G03G 21/0052 (2013.01) [G03G 21/206 (2013.01); G03G 2221/0094 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an image forming portion configured to form a toner image on a sheet at a first position by using toner containing a parting agent;
a fixing portion configured to thermally fix, at a second position, the toner image formed on the sheet by said image forming portion;
a duct, including a suction port provided opposed to a sheet feeding path between the first position and the second position, configured to discharge air to an outside of said image forming apparatus;
a filter, provided at the suction port of said duct, configured to collect particles of a predetermined particle size resulting from the parting agent;
a projecting portion projecting from an outer peripheral surface of said duct; and
a holder configured to hold said filter, said holder provided with an engaging portion to engage with said projecting portion and being detachable from said duct,
wherein said duct includes an edge surface connecting between an inner peripheral surface and the outer peripheral surface, and
wherein said filter is compressed by said edge surface and said holder.