A biosensor capable of measuring the concentration of one or more specific substances in one or more sample solutions almost simultaneously is provided. The nozzle includes a flow conduit for attachment to the applicator for receiving a delivered adhesive and an adhesive dispensing head having a discharge opening communicating with the flow conduit for receiving the adhesive from the flow conduit and applying the adhesive to the surface of the structure. The data analysis section decides whether to decrease a spacing between the two vertically adjacent text lines on the basis of the determination result, and determines a decreased width in a case where the spacing is decreased.