HP is introducing a manufacture date on its toner cartridges. The change is going in production this month, and we can expect to see it on HP laserjet print cartridge boxes starting late April or early May 2007. The date, formatted YYYYMMDD, will be located in the back of box, next to the manufacturing code. It is not to be confused with the expiration date currently displayed on HP inkjet cartridges. There are currently no expiration dates on HP toner cartridges.

March 29, 2008 at 8:01 am
I would like to know the expired date of an HP toner because I found just one date on the back of box and I would like to know how many month I can keep them on stock. Many thanks.
April 2, 2008 at 8:12 pm
That date is the manufacture date. The shelf like on un-opened HP toner cartridges is 2 years. The shelf life on opened HP toner is only 6 months. Thank you.
Supplies Advisors