Printing apparatus having locking member movable with cover

A printing apparatus, comprising:

• a body comprising a container compartment, the container compartment being configured to store a roll including a rolled recording medium, the roll being stored in the container compartment with a width thereof aligning with a first direction, the container compartment being open toward one side of the body in a second direction, the second direction being orthogonal to the first direction;
• a cover configured to be closable to cover an opening of the container compartment and openable to uncover the opening of the container compartment;
• a pair of supporting parts arranged in the container compartment and configured to support sides of the roll along the first direction, at least one of the pair of supporting parts being a movable supporting part configured to be movable in the first direction;
• a locking member arranged on the movable supporting part, the locking member being movable between a locked position, in which the locking member restricts the movable supporting part from moving under a condition where the cover is closed, and an unlocked position, in which the locking member allows the movable supporting part to move under a condition where the cover is open;
• and
• an engaging portion arranged in the container compartment and configured to engage with the locking member being located at the locked position,
• wherein the movable supporting part comprises an opposing face arranged to face the cover under the condition where the cover is closed, the movable supporting part comprising a first face and a second face facing opposite to the first face in the first direction, the first face including a contact face, the contact face being configured to contact one of the sides of the roll in the first direction;
• wherein the locking member comprises a contact portion at a first position where the contact portion protrudes from the opposing face, on a side of the movable supporting part, toward the second face;
• wherein the cover comprises a protrusive portion configured to contact the contact portion;
• wherein the locking member at the unlocked position under the condition where the cover is open, is separated from the engaging portion;
• and
• wherein, in a process where the cover being open is moved to be closed, the protrusive portion of the cover is configured to contact and to be pressed against the contact portion of the locking member and move the contact portion from the first position to a second position, the second position being on a side opposite to the first position from the opposing face in the second direction, causing the locking member to shift from the unlocked position to the locked position to be engaged with the engaging portion.