Image forming device, image forming method, and computer readable storage medium storing image forming program

摘要

A printer receives printing data and sets the area of an external memory as the area that is usable for processing the received printing data when it is judged that memory shortage status has occurred concerning a shortage of vacant areas in the internal memory built into the printer and when it is detected that the external memory is connected to an external memory interface that can be connected to or disconnected from the particular printer while the printer is powered.