Abstract: A printing apparatus is disclosed herein. The apparatus comprises a platen to hold a media thereon, the media moveable along a media path direction; a displacement mechanism to move the media over the platen and along the media path direction; a media advancement prediction based on an operational parameter a media path direction; a displacement mechanism to move the of the displacement mechanism; determine a read media advancement corresponding to the media advancement prediction; determine a sensor reading failure based on the media advancement prediction and the read media advancement; determine that the media advanced a distance corresponding to the media advancement prediction if the sensor reading failure is detected; determine that the media advanced a distance corresponding to the read media advancement if the sensor reading failure is not detected; and to adjust the position of the media by controlling the displacement mechanism to move the media based on the determined media advanced distance.

Abstract: According to an example, a media loading device may comprise a motor and a leading-edge sensor. The motor may rotate a media roll having a leading-edge in a winding direction and unwinding direction, the motor being controlled by a processor. The leading-edge sensor may comprise a pivot arm and a detecting element. The pivot arm may contact the media roll and the detecting element may issue a leading-edge presence signal to the processor upon contact between the detecting element and the leading-edge occurs.