US 11,906,921 B2
Image forming apparatus capable of forming toner image with desired amount of toner, control method for the image forming apparatus, and storage medium
Hiroshi Oya, Tokyo (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Mar. 11, 2022, as Appl. No. 17/692,307.
Claims priority of application No. 2021-042472 (JP), filed on Mar. 16, 2021.
Prior Publication US 2022/0299925 A1, Sep. 22, 2022
Int. Cl. G03G 15/00 (2006.01); G03G 21/02 (2006.01)
CPC G03G 15/556 (2013.01) [G03G 15/5008 (2013.01); G03G 21/02 (2013.01); G03G 15/5016 (2013.01); G03G 2215/00949 (2013.01)] 21 Claims
OG exemplary drawing
 
1. An image forming apparatus comprising:
a printer engine that causes a heating rotary body to support and convey a sheet with a toner image formed thereon and performs an image formation on the sheet;
a first counter used for counting up when one page is printed with one of first chroma and second chroma higher than the first chroma;
a second counter used for counting up when one page is printed with the second chroma;
at least one memory; and
at least one processor that executes instructions stored in the at least one memory to:
control the printer engine to perform, during a printing process, the image formation on sheets in a first mode in which a toner image based on a piece of image data is formed with a first amount of toner, or a second mode in which a toner image based on the piece of image data is formed with a second amount of toner larger than the first amount of toner;
control the first counter to count up during a period corresponding to the printing process;
control the second counter not to count up during the period corresponding to the printing process, in a case where the printer engine is controlled in the first mode; and
control the second counter to count up during the period corresponding to the printing process, in a case where the printer engine is controlled in the second mode.