An image writing device is provided and includes: a case including an accommodating part that accommodates a plurality of display media stacked, a entrance and exit port which is communicated with the accommodating part and through which the display media enter and exit the case, and a window through which an image on a display surface of a display medium can be externally browsed, the image being written in the display medium by applying external stimulation; a conveying part that conveys the display medium into and out of the case through the entrance and exit port; and a writing part arranged near the entrance and exit port of the case, the writing part applying the external stimulation to the display medium to write the image in the display medium when the display medium is conveyed into or out of the case by way of the conveying part.