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Appendix A
TECHNICAL SPECIFICATIONS
w Printing Mechanism
Printing method
Printing speed
Printing direction
Text:
Dot graphics:
Print head
Serial impact dot matrix
142 characters per second (draft pica)
47 characters per second (LQ pica)
Bidirectional or unidirectional (select-
able), logic seeking
Unidirectional, logic seeking
24 Pins
Life: 200 million dots
Ribbon
Black fabric ribbon cartridge
Life: 2 million draft characters
Paper feed
Friction and push-tractor feed
Semiautomatic sheet loading
Paper feed speed
3.4 inches/second (during page feed)
n interface and Emulation
Interface
Centronics-compatible, 7 or 8 bit,
TTL-level
Data buffer
7K bytes when not used for download
characters
l-Line buffer when using download
Emulation modes
Epson LQ-800 and IBM Proprinter X24
n Switches and indicators
Power switch
Rocker switch
Control panel
4 Membrane switches, 10 LED indicators
DIP switches
16 pins
51