Patent ID: 8396408

Claim:
A cleaning device, comprising: a cleaning blade configured to clean a surface of a rotating subject to be cleaned; a solid lubricant configured to reduce a friction coefficient of the surface of the subject; and a lubricant coating device including a coating roller to shave the solid lubricant by rotating in a normal rotation direction and a reverse rotation direction to coat the surface of the subject with the lubricant, wherein different amounts of the lubricant are supplied to the subject during normal rotation of the coating roller and during reverse rotation of the coating roller, wherein the cleaning device is operable in multiple operating modes including a normal operation mode and a lubricant coating mode, wherein, in the lubricant coating mode, an amount of the lubricant supplied to the subject is increased by rotating the coating roller in reverse compared to an amount of the lubricant supplied to the subject in a normal operation mode, wherein the coating roller rotates at a same rotating speed in both the normal rotation during the normal operating mode and the reverse rotation during the lubricant coating mode, wherein the coating roller is any one of a brush roller, a rubber roller or a sponge roller, and includes projections extending in an axial direction of the coating roller, wherein the projections are provided on a surface of the coating roller to extend at an angle, such that, the projections touching the solid lubricant is at a shallow angle under a normal rotation condition, and the projections touching the solid lubricant is at a deep angle under a reverse rotation condition.