US 12,147,190 B2
Image forming apparatus
Takeo Kawanami, Kanagawa (JP); Akinori Mitsumata, Tokyo (JP); Takehiro Miyashita, Kanagawa (JP); and Katsuhiko Oba, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 19, 2023, as Appl. No. 18/156,935.
Application 18/156,935 is a continuation of application No. 17/553,268, filed on Dec. 16, 2021, granted, now 11,586,143.
Claims priority of application No. 2020-213835 (JP), filed on Dec. 23, 2020.
Prior Publication US 2023/0176521 A1, Jun. 8, 2023
Int. Cl. G03G 15/20 (2006.01); G03G 15/08 (2006.01); G03G 21/20 (2006.01)
CPC G03G 21/206 (2013.01) [G03G 15/0868 (2013.01); G03G 15/2017 (2013.01); G03G 15/2064 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a photosensitive drum;
a development device including a development roller for supplying development toner to the photosensitive drum and a development container provided with a replenishment port in which a replenishment container of replenishment toner is configured to be attached to and detached from;
a fixing device configured to fix a toner image transferred from the photosensitive drum to a recording material;
an apparatus main body provided with a discharge port from which the recording material to which the toner image is fixed is to be discharged;
a discharge tray on which the recording material discharged from the discharge port is loaded, wherein the discharge tray is openable and closable with respect to the apparatus main body;
a wall configured to cover the development container and provided with an opening;
a fan including a rotating shaft that extends in a longitudinal direction of the photosensitive drum, a blade disposed around the rotating shaft, a drive gear configured to receive a driving force, and a boss;
a fan holder configured to support the boss; and
a duct connected to the fan holder and configured to guide air supplied from the fan holder toward the discharge port,
wherein a length of the rotating shaft of the fan in the longitudinal direction is longer than a diameter of a rotational trajectory of the blade, and
wherein the fan holder and the duct are disposed above the development device in a vertical direction when the image forming apparatus is placed on a horizontal surface so that the discharge port is disposed above the development device.