Drum Printer and chain printer -
1)Chain printer uses a chain mechanism. There is one print hammer for each print position on the line. The characters are printed when the hammer presses the paper against the ribbon while in drum printer a metallic cylinder having column on the drum contains all the characters. Ad the drum rotates, each character that is to print reaches the appropriate position and a hammer then strikes that character.
2) Drum Printers are costly than chain printers.
3) In chain printers, chains may be changed easily while in drum Printers drums cannot be changed often.
1)Chain printer uses a chain mechanism. There is one print hammer for each print position on the line. The characters are printed when the hammer presses the paper against the ribbon while in drum printer a metallic cylinder having column on the drum contains all the characters. Ad the drum rotates, each character that is to print reaches the appropriate position and a hammer then strikes that character.
2) Drum Printers are costly than chain printers.
3) In chain printers, chains may be changed easily while in drum Printers drums cannot be changed often.
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