HP 780 INK SYSTEM CLEANING KIT - With HP's help—safe, reliable, smart. The HP Designjet 8000s, low-solvent inks, and cleaning and maintenance kits are designed and tested together to produce vivid, durable prints. And with HP Smart technology[1] that monitors supplies status, HP supplies are easy to use and manage. But HP offers even more—following HP's installation and use guidelines helps you implement a safe, reliable and productive low-solvent ink printing solution.