An example disclosed media processing device includes a housing defining a media receiving area configured to receive the media; a first media support arm extending from the housing proximate the media receiving area for engaging a first end of the media, wherein the first media support arm is biased to slidably translate along the housing to provide a holding force to the first side of the media, wherein the first media support arm includes a first locking element; a media cover configured to move between a closed position and an open position, the media cover including a second locking element, wherein the first locking element of the first media support arm is configured to engage the second locking element of the media cover when the media cover is in the closed position.