Abstract
The first thin paper was made as printing paper for the Bible at Oxford in 1841.The basis weight of thin paper is up to 40g/m2. And this paper includes cigarette paper, India paper and carbon copying paper.India paper is printing paper for dictionaries or the Bible. The origin of this paper is NAJIO-TORINOKO which is a kind of WASHI, or Chinese rice paper made from pith of rice paper tree. This thin printing-paper has characteristics of thinness and is highly opaque. And in order to keep its quality, pulp is refined elaborately and good scattered filler is added.Recently, ultra-light-weight coated paper which is coated with light weight coating color by the gate roll coater has been developed.In order to produce paper with many different characteristics, we make good use of many kinds of pulps, ways of refining, many sorts of fillers, surface sizing agents and calendering methods. And the fabrics for paper making are selected after due consideration.Now, ways of recycling and improving the stiffness of thin paper are being studied.In the future, it is expected that the use of thin paper will increase as the media produces higher information density per unit of paper weight.
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