Oki ML1120 - Ribbon Specification; Reliability

Technical Reference Guide – Specifications > 186
Media supply: Bottom paper feed only
For detailed media specifications see “Appendix D – Media
specifications” on page 220.
R IBBON SPECIFICATION
> Original OKI cartridge ribbon:
Ink colour: Black
Ribbon life: 4 million characters (Utility Mode)
R ELIABILITY
> MBTF (mean time between failures)
10,000 hours of power-on time
Page density: 35%
Duty cycle: 25%
> Printhead life
200 million characters (average) in 10 CPI Utility print
quality.
Page density: 35%
Duty cycle: 25%
> Printer life
12,000 hours of power-on time or 5 years
Page density: 35%
Duty cycle: 25%
> MTTR
15 minutes Major Sub-assembly level.
Definition of terms:
> Page density: The proportion in area of characters and
spaces within printhead movable area.
> Duty cycle: Actual operation rate