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SPECIFICATIONS
Item Specification
Print Method Impact dot matrix
Printhead 9 pins, 0.30 mm (0.0118") diameter, with thermal
protection
Interfaces:
Standard:
Optional
:
Centronics parallel, IEEE-1284 compliant
USB 1.1
RS-232C Serial
Receive Buffer Size Maximum 128K
Reliability
Ribbon Life
Printhead Life
Mean Time Between
Failures (MTBF)
Mean Time to Repair (MTTR)
4 million characters, on average, 10 cpi utility
200 million characters average in 10 cpi utility mode at
25% duty and 35% page density
20,000 hours at 25% duty cycle and 35% page density
15 minutes
Emulations (co-resident) IBM Proprinter III
Epson FX
Oki MICROLINE Standard
Print Speed
Super Speed Draft
High Speed Draft (HSD)
Utility
Near Letter Quality (NLQ)
Speed*
570 cps
507 cps
380 cps
95 cps
* cps = characters per second
Characters per Line (cpl) Setting
10 cpi
12 cpi
15 cpi
17.1 cpi
20 cpi
ML5520 ML5521
80 cpl 136 cpl
96 cpl 163 cpl
120 cpl 204 cpl
137 cpl 233 cpl
160 cpl 272 cpl
Graphics Resolution
IBM, Epson
Oki Microline
Density Max. Resolution (dpi)
Single 60 x 216
Double 120 x 216
Quadruple 240 x 216
Single 72 x 72
Double 144 x 144
Quadruple 288 x 144
* dpi = Dots per Inch