A chain printer has a steel band on which the character sets are embossed, which is rotated at a high speed in front of carbon ribbon and paper. There is one print hammer for each column on the paper as a character to be printed passes in front of each position on the paper, where it is to be printed, the magnetically controlled hammer behind the paper presses the paper agains the type set to print the character.
The main advantage of character printer is the erase with which chains may be changed. Thus different fonts and different script may be used with same printer.
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