US 12,411,432 B2
Image forming apparatus
Shunsuke Matsushita, Kanagawa (JP); and Toshihiko Takayama, Kanagawa (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Aug. 12, 2024, as Appl. No. 18/800,273.
Claims priority of application No. 2023-137526 (JP), filed on Aug. 25, 2023.
Prior Publication US 2025/0068117 A1, Feb. 27, 2025
Int. Cl. G03G 15/02 (2006.01); G03G 15/08 (2006.01); G03G 21/00 (2006.01); G03G 21/10 (2006.01)
CPC G03G 15/0225 (2013.01) [G03G 15/0258 (2013.01); G03G 15/0275 (2013.01); G03G 15/0856 (2013.01); G03G 15/0896 (2013.01); G03G 21/0035 (2013.01); G03G 21/0064 (2013.01); G03G 21/10 (2013.01); G03G 21/0088 (2013.01); G03G 2215/0891 (2013.01); G03G 2221/1621 (2013.01); G03G 2221/1627 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
an image bearing member which is rotatable;
a charging member which is rotatable and charges the image bearing member;
a development member which is rotatable and supplies a developer to a surface of the image bearing member;
a developer accommodating portion which accommodates therein a developer supplied to the development member;
a first acquiring portion which acquires developer amount information related to an amount of a developer accommodated in the developer accommodating portion;
a second acquiring portion which acquires development drive information related to a movement distance on a surface of the development member; and
a control portion which is capable of performing a first mode and a second mode, whose frequency of driving the development member is lower than the first mode, as an image forming mode, the control portion proposing or deciding on a change of the image forming mode from the first mode to the second mode on the basis of the developer amount information and the development drive information.