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Print Band
A line printer that uses a metal band, or loop, of type characters as its
printing mechanism. The band contains a fixed set of embossed characters
that can only be changed by replacing the band. The band spins horizontally
around a set of hammers, one for each print column. When the required
character in the band has revolved to the selected print column, the hammer
pushes the paper into the ribbon and against the embossed image of the
letter, digit or symbol.
Band printers can print up to approximately 2,000 lpm and can exist in very
harsh industrial environments, although they are mostly used in datacenters.
Band printers and line matrix printers are the two surviving line printer
technologies.
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