When you hold some paper up to the light, you can see a light and shade pattern (or letters). This light and shade pattern is called watermark, and the process of creating watermarks is called sukiire. It started when papermakers devised ways to leave patterns on the paper by hand, in order to distinguish their products from others. In modern Fourdrinier papermaking machines, sukiire is done with dandy rolls placed on a flat wire screen where the sheet is formed. As the wet sheet moves along with the wire screen, the dandy rolls rotate, flattening the surface of the wet paper and squeezing out the water. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
紙を光に透かして見ると濃淡の模様(または文字)が見えるものがある。このような濃淡模様を透しといい,透しを作ることをすき(漉)入れという。かつて紙すき職人が自分の製品を他と区別するため,手すき網にくふうして紙に模様が残るようにしたのが始まりである。現在の長網抄紙機では,シート形成が行われる平たんな金網の上においたダンディーロールですき入れをする。ぬれているシートが金網とともに移動するにつれてダンディーロールが回転し,湿紙の表面を平らにし,水をしぼる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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