| 摘要 |
PROBLEM TO BE SOLVED: To provide an OA blade having such a sharp shape that an edge is erected.SOLUTION: The OA blade 1 includes: a plate 2 having a long-sized shape; and an elastic member 3 which is disposed along the longitudinal direction on the plate 2 and abutted to a material to be treated where the elastic member 3 is formed in such a shape as to include a first surface TF opposite to the surface coming into contact with the blade 2 in the thickness direction, and a second surface SF and a third surface CF arranged so as to intersect with the first surface, and a protrusion PR is formed on the first surface in a prescribed area in the neighborhood from a corner AN where the first surface, the second surface and the third surface intersect with one another. |
