| 摘要 |
PURPOSE:To provide a characteristic measuring instrument of the simple construction capable of easily measuring characteristics even with the instrument already mounted with flanges or not mounted with the flanges. CONSTITUTION:This characteristic measuring instrument has a supporting member which rotatably supports photosensitive drums 4 and at least an electrostatic charger 5, exposing device 6 and potential measuring sensor 7 which are provided to be disposed around the supported photosensitive drum 4. This supporting member consists of a rotary stand 1 having at least two pieces of revolving shafts 2 which are placed with the photosensitive drums and rotate these drums. One of the revolving shafts preferably forms the electrostatic charger consisting of an electrostatic charging roll. |
