A method controls a display for a copying machine including a device having two-dimensional dot displaying device in which displaying layers for at least two colors of red and green are provided and capable of displaying at least four colors red, green, white, and black by combining the displaying layers....http://www.google.es/patents/US5131079?utm_source=gb-gplus-sharePatente US5131079 - Method of controlling a display and a display control device for a copying machine
Method of controlling a display and a display control device for a copying ...
