Image reader

An image reader comprising:

• a housing;
• a sheet support surface disposed at the housing and configured to support a sheet placed thereon;
• a conveyor comprising a roller, the conveyor configured to convey in a first direction the sheet placed on the sheet support surface;
• a drive unit configured to generate a driving force for driving the conveyor;
• an image sensor unit configured to read an image on the sheet being conveyed by the conveyor;
• a cover configured to rotate between an open position to expose the roller and a closed position to cover the roller, around a rotational axis extending in a second direction perpendicular to the first direction;
• and
• a detector configured to output a first signal when the cover is in the closed position and output a second signal different from the first signal when the cover is in the open position, the detector disposed on a same side as the drive unit with respect to the sheet support surface in the second direction.