A sheet processing device includes a stapler that executes stapling processing, a sheet detection sensor that detects a sheet as a processing target, and an execution button that receives an instruction to execute the stapling processing from a user. The sheet processing device lights up the execution button when the sheet detection sensor detects the sheet, and causes the execution button to blink when the execution button is pressed or a predetermined time period has elapsed.

A sheet conveyance apparatus includes a stacking tray, a conveyance roller, a first sensor configured to detect the sheet, a second sensor configured to detect the sheet, the second sensor and the first sensor being located side by side in a width direction, a controller configured to execute stopping processing to stop conveyance of the sheet based on the first sensor and the second sensor, and a display portion configured to display a predetermined screen configured to set a different-width mixed stacking mode in a case where the stopping processing is executed based on the first sensor and the second sensor.