| 摘要 |
PURPOSE: A water knife for cutting paper is provided to easily cut the paper while a wet roller rolls by properly discharging water. CONSTITUTION: A water knife for cutting paper comprises a roller(12). The roller is formed into a thin plastic round plate to precisely cut the paper. The roller comprises a small projection(121), sponge layer(122), and a rubber layer(123). The small projection is formed in the center of the lateral side of the roller, and the paper easily holds water through the small projection. The roller is covered with the sponge layers. The rubber layer is placed on left and right sides of the sponge layer such that the paper intensively holds the water. |
