US Patent 11772383 Storage amount detection device and liquid discharge device

A storage amount detection device includes a storage section that includes a first surface and a second surface separated from the first surface in a first direction, and is configured to store an object between the first surface and the second surface, a transmission electrode provided on the first surface, a first reception electrode provided on the second surface, a second reception electrode provided on the second surface, an output terminal, a selector circuit that switches whether or not to electrically couple the output terminal to at least one of the first reception electrode and the second reception electrode, and a detection circuit that detects a storage amount of the object in the storage section based on an output from the output terminal.