Patent ID: 11906921
Assignee: CANON KABUSHIKI KAISHA
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 0:
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.