Disclosed are a scuba mask structure and a manufacturing process thereof. The apparatus also has a control portion and shifts a reference position which has been previously set to a direction orthogonal to a transporting direction of the sheet of paper based on the paper weight or the like of the transported sheet of paper. The computer further receives a text string having a fall rate value. The curved plate-shaped transmissive body includes portions which are separated from the planar plate-shaped light guide body by different gaps. The service can be deployed to one or more physical machines, one or more virtual machines or to a combination thereof.