Paper-sheet recognition apparatus

A paper-sheet recognition apparatus comprising:

• a base plate;
• and
• one or a plurality of line sensors that are engaged in the base plate in a direction perpendicular to a paper-sheet transport direction and read data for a nearly whole area of a paper sheet, wherein
• an engaging portion between the line sensor and the base plate has a concave-convex engaging structure in which a concave-convex portion provided in the line sensor and a concave-convex portion provided in the base plate are engaged with each other,
• a convex portion of the concave-convex portion provided in the line sensor has the same size as a convex portion of the concave-convex portion provided in the base plate in the direction perpendicular to the paper-sheet transport direction,
• each of the concave-convex portions is formed having an inclined surface that extends downwardly from a horizontal plane, and
• edges of end faces of the concave-convex portions and boundaries between a horizontal plane of the base plate and the inclined surfaces of the concave-convex portions are round chamfered.