| 摘要 |
PURPOSE:To easily manage the lifes of both of a line head and a photosensitive body. CONSTITUTION:In an electrophotographic device 10 having a photosensitive body 20 and a line head unit 30, which can be attached/detached to/from a main body 1, nonvolatile memories 26 and 36 are attached to respective units 10 and 20, initial value rewriting means 11 and 12, and transferring/writing means 11 and 12 are provided, and a constitution that both of line head life data Dh and photosensitive body life data Dd, stored in respective memories 26 and 36, are always made coincident, is adopted. |
