| 摘要 |
PURPOSE:To simply and certainly form a stamp by holding a photosensitive plate (photosensitive resin plate) and a negative plate between a black elastic material and a transparent cover to expose them to light to prevent the irradiation of the photosensitive plate with the leaked light from the bottom and side surfaces of the photosensitive plate. CONSTITUTION:When a stamp is produced, at first, the scratch layer of a negative film 22 is shaven off by a writing jig 34 such as a pencil to draw a rough sketch to form the negative film 22. Next, a photosensitive plate and the reversed negative film 22 are closely brought into contact with each other to be placed on a black elastic material 2 and covered with a transparent cover 4 and the whole is fixed by a fixing means 6. Then, a shading cover 16 is closed to take out a main body 10 to the outdoors. After an exposure time is set by a clocking means 8 corresponding to a season, whether conditions or the position of the sun, the shading cover is opened and the photosensitive plate is exposed to solar rays only for a set time. After the completion of exposure, the non-photosensitive part of the photosensitive plate is washed off by hot water and the photosensitive plate is dried and fixed and subsequently bonded to a printing stand to complete a stamp. |
