Duty Cycle - What does duty cycle mean?

Definition of DUTY CYCLE:

In printing, the duty cycle of a printer refers to the estimated number of pages the device is capable of printing in a given period of time without failing or causing damage to the machine. Most are given as monthly duty cycles; the duty cycle indicates the maximum number of pages that it is safe to print in a month, while a recommended duty cycle may also be provided to indicate the number of pages that can be printed by a printer on a regular basis while continuing to function at a consistently acceptable standard.