Patent ID: 6628418
Filing Date: 2003-09-30
Classification: G03G

Abstract:
An imaging forming apparatus comprising:a first memory in which control program data are stored; a second memory which stores data; a third memory which stores program data for diagnosing whether abnormality is present in the program data stored in the first memory; an inputting section which inputs data; a first control section which stores the program data in the first memory into the second memory and then, writes the program data input by the inputting section into the first memory; a diagnosing section which diagnoses whether abnormality is present in the program data stored in the first memory, based on the program data stored in the third memory, after the first control section performs a writing operation; and a second control section which writes the program data stored in the second memory into the first memory when the diagnosing section diagnoses that abnormality is present.