Residual toner on the drums is removed by a cleaning blade. The cleaning blade is installed counter to the drum rotation and in contact with the drum, and scrapes toner off.
The lubricant roller rotates in the opposite direction to the drum, and coats the drum with a solid lubricant to enhance cleaning. Also, by installing the lubricant blade in the trailing direction instead of as a conventional counter blade, and by replacing the lubricant brush with a lubricant roller, the lifetime of the device is extended.
In addition to cleaning, the solid lubricant reduces wear of the drum that is due to the blade.