PURPOSE: To use an usable section even if an abnormal section occurs and time to be recovered, effectively by providing a deciding means deciding an effective instructing range on an instructing means according to the contents of abnormality inside and an explicit means pointing out the instructing range decided by the deciding means.

CONSTITUTION: When the abnormal section is given input with respect to selecting keys 300 - 307 displayed on the region 311 of a liquid crystal display part 300 and the input of a selecting key 342 for instructing the completion of a color mode, are checked. When the input of the selecting keys 300 - 307 is given, the selecting key selected is reversely displayed. Thus, even if the abnormal section relating to the color mode occurs, the selection of color not influencing on the abnormal section can be carried out. Moreover, printing with the selected color is carried out. Thus, the abnormal section can be effectively used as a section not having the abnormality till the abnormal section is recovered.