User Guide

Understanding display messages | 149
a.Estimated cartridge life means the expected or estimated toner cartridge life, which indicates the average
capacity of print-outs and is designed pursuant to ISO/IEC 19752 (see "Available supplies" on page 124). The
number of pages may be affected by operating environment, percentage of image area, printing interval,
media, percentage of image area, and media size. Some amount of toner may remain in the cartridge even
when replace new cartridge appears and the machine stops printing.