Oki ML490 ML490/491 User's Guide (American English) - Page 75

Appendix C: Specifications

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Appendix C: Specifications Note: Specifications are subject to change without notice. Print Method Impact dot matrix Printhead 24 pins, 0.20 mm (0.0079") diameter, with thermal protection Interfaces Standard: Centronics parallel, IEEE-1284 compliant USB 1.1 Optional: RS-232C Serial Ethernet Print Servers: 6120i 10/100 Base-TX Internal 6020e 10/100 Base-T External 6010e 10 Base-T External Receive Buffer Size Maximum 128K Reliability Ribbon Life 4 million characters, on average, 10 cpi utility Printhead Life 400 million characters average in 10 cpi draft mode at 25% duty and 35% page density Mean Time Between Failures (MTBF) 20,000 hours at 25% duty cycle and 35% page density Mean Time to Repair (MTTR) 15 minutes 75

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Appendix C: Specifications
Note:
Specifications are subject to change without notice.
Print Method
Impact dot matrix
Printhead
24 pins, 0.20 mm (0.0079") diameter, with thermal
protection
Interfaces
Standard
:
Centronics parallel, IEEE-1284 compliant
USB 1.1
Optional
:
RS-232C Serial
Ethernet Print Servers:
6120i 10/100 Base-TX
Internal
6020e 10/100 Base-T
External
6010e 10 Base-T
External
Receive Buffer Size
Maximum 128K
Reliability
Ribbon Life
4 million characters, on average, 10 cpi utility
Printhead Life
400 million characters average in 10 cpi draft mode at
25% duty and 35% page density
Mean Time Between Failures (MTBF)
20,000 hours at 25% duty cycle and 35% page density
Mean Time to Repair (MTTR)
15 minutes