Conveyor, printing device, and box making machine

A conveyor that is disposed at a printing unit of a box making machine and conveys a corrugated sheet that is to undergo printing, comprising:

• a conveyor belt having a conveying face that conveys the corrugated sheet;
• a suction box that is disposed at a back side of the conveying face of the conveyor belt and that suctions the corrugated sheet onto the conveying face with negative pressure;
• a plurality of guide rolls that guide or drive the conveyor belt, the plurality of guide rolls including an inlet roll disposed at a side of an inlet where the corrugated sheet is fed onto the conveyor belt and an outlet roll disposed at a side of an outlet where the corrugated sheet is ejected from the conveyor belt;
• air blowing means that is disposed on the back side of the conveyor belt within a region where the conveyor belt proceeds from the outlet roll to the inlet roll and that blows air to an outside;
• and
• a partition member that is disposed at the back side of the conveyor belt within the region where the conveyor belt proceeds from the outlet roll to the inlet roll, that extends along a cross direction of the conveyor, and that forms a compartment in combination with the back of the conveyor belt, wherein
• the air blowing means blows the air inside the compartment and exhausts the air out of the compartment.