A mobile device is disclosed. The mobile device includes an inkjet printhead, a print media feed path for directing print media past the printhead in a feed direction during printing, and a capping mechanism including a capper moveable between a capping position in which the capper is urged into a capping relationship with the printhead, and an uncapped position in which the capper is displaced away from the printhead thereby exposing the printhead to print media in the print media feed path. The capper is moved between the capped and uncapped position by engagement with an edge of the print media as the print media moves through the feed path.