The invention refers to an imaging device and an imaging method, aiming to reduce image quality decline caused by light uneven distribution of an exposure device as much as possible under the condition of not widening a communication band zone between an exposure control circuit and a central processor. The imaging device possesses a light emitting diode head; the light compensation data of a luminous diode is transmitted to an exposure control part to compensate the light quantity of the light emitting diode head. The imaging device also a priority determination unit (321) which is used for dividing the light compensation data according to a preset dividing mode and setting letter delivery priority among the divided light compensation data, and a letter delivering and printing control unit (322) which sends the divided light compensation data to the exposure control part in sequence according to the letter delivery priority, stops the sending of the light compensation data once detecting imaging start time and starts imaging.