| 摘要 |
PURPOSE:To accurately execute the calculation of the costs of a white-and-black image and a color image by individually providing a counter for white-and-black images and a counter for color images. CONSTITUTION:The titled device provides the white-and-black counter for counting the number of the formation of the white-and-black images and the color counter for counting the number of the formation of the color images. Namely, the white-and-black images are formed by a developing device 3B for black and the number of the formation of the white-and-black images is counted by the white-and-black counter. And the monochromatic or multichromatic color images are formed by the developing devices 3Y, 3M and 3C for colored and the number of the formation of the color images are counted by the color counter. Thus, the number of the formation of the white-and-black images and the number of the formation of the color images are individually counted. Thus, the cost in forming the white-and-black images and that in forming the color images can be respectively calculated based on the respective counted values. |
