Cleaning system for a charging device in a xerographic printer

A printing apparatus, comprising:

• an imaging member defining an imaging surface;
• a charge device for placing a charge on a portion of the imaging surface, the charge device including a corona member and a housing defining a first side wall surface extending in an extension direction, said first side wall surface defining the exterior of the charging device;
• a shuttle movable along the extension direction, the shuttle including a wiper for cleaning the corona member and a first scraper useful for cleaning the first side wall surface;
• and
• a substantially electrically insulative tab disposed near a stop position of the shuttle substantially adjacent the side wall surface, the tab accepting a portion of the scraper and effectively covering against a portion of the side wall surface accumulated material removed from the wall surface by the scraper,
• wherein said charging device comprises a charging element, which is not cleaned by said scraper,
• wherein said scraper is disposed between said charging element and said side wall surface.