Charging device

摘要

A shutter that suppresses accumulation of discharge products on a photosensitive member is disposed between a grid and the photosensitive member. In this structure, to suppress corrosion of the grid due to the discharge products for a long time, first and second protective layers are provided. The first protective layer is provided on a surface of a base member of the grid that faces the discharge electrode. The second protective layer is provided on a surface of the base member that faces the shutter. The second protective layer is thicker than the first protective layer.

主权项

1. A charging device that charges a member to be charged, the charging device comprising:
a discharge electrode; a housing that surrounds the discharge electrode and has an opening that faces the member to be charged; a plate-shaped grid provided at the opening so as to face the discharge electrode; a shutter that opens and closes the opening and contactable to a surface of the grid that faces the member to be charged; a cleaning member that cleans the grid by contacting a surface of the grid that faces the discharge electrode; and a moving mechanism that moves the shutter in a longitudinal direction of the grid, wherein the grid includes a base member, a first protective layer provided on a surface of the base member that faces the discharge electrode, the first protective layer protecting the base member, and a second protective layer provided on a surface of the base member that faces the shutter, the second protective layer protecting the base member and being thicker than the first protective layer.