Identifies the date that the device was installed. The format of the string is 'YYYYMMDDHHmmZ'. Where: YYYY is the year. MM is the month (1-12). DD is the day (1-31). HH is the hour of the day (0-23). mm are the minutes (0-59). 'Z' designates Greenwich Mean Time; if 'Z' not specified, value is local time. Device POS must specify the conditions for setting this object. Additional information: Identifies the date that the device was installed. The format of the string is 'YYYYMMDDHHmmZ'. Where: YYYY is the year. MM is the month (1-12). DD is the day (1-31). HH is the hour of the day (0-23). mm are the minutes (0-59). 'Z' designates Greenwich Mean Time; if 'Z' not specified, value is local time. On Products without a real-time clock this object has the inital value of 'INVALID'. While in the invalid state the object may written to. Once the initial install date has been written a new intall date can not be written without resetting the object to 'INVALID'. The behavior on products with real-time clocks is different. The object is set to the initial real-time clock value, usually this is '199000300000'. Manufacturing sets the real-time clock to the correct date and sets the INSTALL-DATE to 'INVALID'. Then when the customer turns on the printer for the first time the install date is reset.