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Today almost all paper is made using industrial machinery, while handmade paper survives as a specialized craft and a medium for artistic expression. In papermaking, a dilute suspension consisting mostly of separate cellulose fibres in water is drained through a sieve-like screen, so that a mat of randomly interwoven fibres is laid down.
The primary preservation challenge is the low-quality paper often used, which would yellow and degrade due to residual acid in the treated pulp from which the paper was made. In the worst case, old copies can crumble into small particles when handled. Mimeographed copies have moderate durability when acid-free paper is used. [18]
Kraft pulp is darker than other wood pulps, but it can be bleached to make very white pulp. Fully bleached kraft pulp is used to make high-quality paper where strength, whiteness, and resistance to yellowing are important. The kraft process can use a wider range of fiber sources than most other pulping processes.
The first of these to unambiguously depict the paper fortune teller is an 1876 German book for children. It appears again, with the salt cellar name, in several other publications in the 1880s and 1890s in New York and Europe. Mitchell also cites a 1907 Spanish publication describing a guessing game similar to the use of paper fortune tellers. [20]
Hazelwood School District v. Kuhlmeier, heard by the United States Supreme Court in 1987 concerned a public school newspaper that attempted to print two controversial stories about issues of teen pregnancy and divorced families. It was the custom of the principal to look over the proposed paper before publication.
As the paper to be printed moves through the printer, the solvent is spread across each sheet by an absorbent wick. When the solvent-impregnated paper comes into contact with the back side of the first sheet, it dissolves just enough of the pigmented wax to print the image onto the paper as it goes under the printing drum.
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For other uses: emery paper, blotting paper, litmus paper, universal indicator paper, paper chromatography, electrical insulation paper (see also fishpaper), filter paper, wallpaper It is estimated that paper-based storage solutions captured 0.33% of the total in 1986 and only 0.007% in 2007, even though in absolute terms the world's capacity ...