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readable as braille that has been freshly embossed, in much the same way that a poor-quality photocopy is not as readable as the original. Hence large publishers do not generally use thermoforms.

Some embossers can produce "dotty Moon", i.e., Moon type shapes formed by dots.

History

Before the invention of modern embossers, mechanical paper embossers like the Kleidograph, invented in 1894 by William Bell Wait,

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