What does the HP limited warranty cover for the Officejet Pro 8600 Plus, and for how long?

The printer hardware is covered for 1 year from the date of purchase, while software media is covered for 90 days and printheads (customer-replaceable) for 1 year. The warranty covers defects in materials and workmanship under normal use, but does not cover damage from improper maintenance, unauthorized modification, or use of non-HP or refilled cartridges. If a non-HP or refilled cartridge causes printer failure, HP will charge standard time and materials fees to service the printer. (Page 27)