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About 1,600 years ago, a popular ink recipe was created. The recipe was used for centuries. Iron salts, such as ferrous sulfate (made by treating iron with sulfuric acid), were mixed with tannin from gallnuts (they grow on trees) and a thickener. When first put to paper, this ink is bluish-black. Over time it fades to a dull brown.
The forme is mounted on a printing press, a thin coating of viscous ink is applied, and impressions are made on paper under great pressure in the press. "Sorts" is the term given to special characters not freely available in the typical type case, such as the "@" mark.
Spots of ink are dropped onto a piece of paper and the paper is folded in half, so that the ink will smudge and form a mirror reflection in the two halves. The piece of paper is then unfolded so that the ink can dry, after which someone can guess the resemblance of the print to other objects.
Lettering is an act or result of artfully drawing letters, instead of writing them simply. Lettering is considered an art form, where each letter in a phrase or quote acts as an illustration. Each letter is created with attention to detail and has a unique role within a composition. [1]
However, the mark made by them is semi-permanent on some surfaces. Most permanent marker ink can be erased from some plastic surfaces (like polypropylene and teflon ) with little rubbing pressure. They can be used on ordinary paper, but the ink tends to bleed through and become visible on the other side.
The resulting sorts or slugs are later used to press ink onto paper. Normally the typecasting machine would be controlled by a keyboard or by a paper tape. It was the standard technology used for mass-market printing from the late nineteenth century until the arrival of phototypesetting and then electronic processes in the 1950s to 1980s. [1 ...
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The ink used for writing is usually water-based and is much less viscous than the oil-based ink used in printing. Certain specialty paper with high ink absorption and constant texture enables cleaner lines, [11] although parchment or vellum is often used, as a knife can be used to erase imperfections and a light-box is not needed to allow lines ...