| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a useful function.SOLUTION: A printer 3 includes: a position-based usage information recording section 42 which accumulates usage of each of image forming unit attachment sections 22 to which multiple kinds of image forming units 20 are mounted, without classifying the image forming units 20; a unit attachment detection section 24 which detects that the kind of the image forming unit 20 mounted on the image forming unit attachment section 22 has been changed; and a change information recording section 44 which stores the usage of the image forming unit 20 mounted on the image forming unit attachment section 22 together with the kind of the image forming unit 20 when the unit attachment detection section 24 detects the change in kind of the image forming unit 20.</p> |
