This object is used to report the date on which this consumable was first installed. The format of the string is 'YYYYMMDD'. Where: YYYY is the year. MM is the month (1-12). DD is the day (1-31). The device POS needs to indicate what will be written in the event the printer does not have a real time clock. Additional information: This object will only exist for Authentic HP consumables. If the cartridge is deemed to be NonHP, then this object will not exist. For printers without internal clocks, the date will always be 20000101.