| 摘要 |
PURPOSE:To attain an exposure managing and adjusting strip which is used for contact exposure, by forming prescribed a screen having the number of rough lines and the number of fine lines on a transmission film so that they adjacent to each other partially. CONSTITUTION:A screen of 133 lines having 50% dot area rate is arranged on an outside 1, and five screens different in dot area rate from one another by 3% are arranged on each side of a center screen of 500 lines having 59% dot area rate on the inside, thus forming the strip. That is, screens 2, 3, and 4 of 500 lines have 56%, 59%, and 62% dot area rates respectively. Thus, the exposure managing and adjusting strip which is used for contact exposure to a printing sensitive material and is easy to handle and has a high precision is attained. |
