HP 5550 User Guide - Page 277

Consumable Life Expectancy Chart User-Replaceable Item Toner cartridge Average Life Expectancy Standard in-box Cartridge: Printed within a constant environment 3,000 pages or more (Continuous) Printed outside of a constant environment 2,400 pages or more (Continuous) Replacement Cartridge (Standard-Capacity): Printed within a constant environment 6,000 pages or more (Continuous) Printed outside of a constant environment 4,800 pages or more (Continuous) Replacement Cartridge (High-Capacity): Printed within a constant environment 12,000 pages or more (Continuous) Printed outside of a constant environment 9,600 pages or more (Continuous) Print unit 30,000 pages (Continuous) Waste toner bottle 36,000 pages (Monochrome) (Continuous) 9,000 pages (Full color) (Continuous) Transfer roller 120,000 pages (Continuous) Ozone Filter (Bundle with 120,000 pages transfer roller) Transfer belt unit 120,000 pages (Continuous) Note: A constant environment is one with a temperature between 15 °C [59 °F] and 25 °C [77 °F] and humidity between 35% and 70%. " The values shown for the toner cartridge and waste toner bottle indi- cate the number of pages for simplex printing using A4/Letter-size media with 5% coverage. The actual life may differ (be shorter) depending on the printing conditions (coverage, paper size, etc.), differences in the printing method, such as continuous printing or intermittent printing (when print jobs of one page are often printed), or the type of paper used, for example, thick paper. In addition, the life will be affected by the temperature and humidity of the operating environment. Technical Specifications 263