Patent attributes
A photoconductive drum unit includes a frame, a photoconductive drum, and a scorotron charging unit. The charging unit includes a pair of mounting members, a discharging electrode filament, a shield casing, a grid, and a connecting member. The mounting members are mounted and fixed at both end portions of the frame. The discharging electrode filament extends between the mounting members in a tensioned state. The shield casing is supported by being connected between the mounting members and covers the discharging electrode filament. The grid extends between the mounting members in a tensioned state and is arranged in an opening of the shield casing. The connecting member connects the mounting members and the shield casing in a state in which a slight displacement is permitted between the mounting members and the shield casing.
