Conveyor and image recording apparatus

A conveyor, comprising:

• a receiver configured to detachably receive a roll-like sheet,
• a conveyance unit configured to convey the sheet pulled out from the receiver in a conveyance orientation along a conveyance surface;
• and
• a tensioner configured to apply tension to the sheet at a position upstream of the conveyance unit in the conveyance orientation,
• wherein the tensioner includes:
• a frame having an engagement member pair,
• a guide having a curved surface configured to contact the sheet and a groove pair configured to engage with the engagement member pair, the groove pair each extending in a first direction along the conveyance orientation,
• a pivoting member configured to pivot around an axis extending in a second direction that is orthogonal to the first direction and is parallel to the conveyance surface,
• a transmission member configured to transmit pivoting of the pivoting member to the guide, and
• an urging member configured to apply, to the guide, urging force including a component in the first direction.