A:Answer A print cartridge can be installed in a printer any time during its 18 month shelf life. If it is installed after 18 months accumulated pigments, congealing, and/or hardening ink may adversely affect product performance.
TIJ 2.5 ink products have a maximum expected life of 24 months. This is calculated as follows:
18 months shelf life + 6 months (installed in the printer) = maximum expected life.
For more information on this issue, please log on at:
http://www.hp.com/oeminkjet/jp/reports/TIJ25_shelf_life_statement.pdf