| 摘要 |
PURPOSE:To perform a regular printing immediately after a test printing by shielding with a desired width simply and easily, by providing a shielding and adjusting plate to shield a part of the opening part for exposure of a main body of a negative mask or a negative pussing plate slidably. CONSTITUTION:A negative mask 1 in combination of test printing is constituted of a negative pussing plate 2, a main body of a negative mask 3, a shielding and adjusting plate 4 and a storing box 5. The negative pussing plate 2 and the main body of negative mask 3 are equipped with each opening part for exposure 6, 7 coincident with the picture of a negative film at each center, and have each bent and projected piece 8, 9 at each rear end and the negative film is inserted and held inbetween. A storing box 5 is fixed on the lower surface of the main body 3, and two shielding and adjusting plates approximately in L shape are stored to be slidable to a fixed direction, and as an arm 16 is projected from a notch 17, an operation is performed easily. Magnets 18 hold the plate 4 at the prescribed position. |
