Troubleshooting „ Cartridge Status : ’OK’, ’Missing’, ’Low’, ’Very Low’, ’Empty’, ’Reseat’ or ’Replace’. „ Expiration Date : Manufacture date (date marked on the actual Ink Cartridge) + 30 months. „ Install Date : Corresponds to the internal date of the Printer (RTC) when the Ink Cartridge was installed for the first time. „ Capacity : Total capacity of the Ink Cartridge. Printer Usage Information This page contains the following information: „ Printer Usage. „ Usage per Printhead Slot. „ Usage per Cartridge Slot. „ Media Usage per Media Type. „ Component Usage. „ Spittoon Usage. „ Preventive Maintenance Usage. 1-20 hp designjet 4000 series printer service manual