Inkjet printer

An inkjet printer, comprising:

• a head including a nozzle configured to eject an ink;
• a light emitting element configured to emit light;
• a beam splitter configured to split an optical path, which is a path of light emitted from the light emitting element, into a first optical path and a second optical path;
• a first light receiving element configured to receive light passing through the first optical path;
• a second light receiving element configured to receive light passing through the second optical path;
• a subtraction circuit configured to obtain a difference between an amount of received light by the first light receiving element and an amount of received light by the second light receiving element;
• and
• a controller, wherein:
• the first optical path is provided so as to pass through a flying area in which the ink ejected from the nozzle flies,
• the second optical path is provided so as not to pass through the flying area,
• the controller is configured to execute a judgement of an ejection state of the ink based on the difference, and
• the controller is configured to control an amount of light emitted from the light emitting element based on
• an elapsed time from a predetermined time.