HP and 8150 MFP manual Appendix B Control Panel Menus 437, Toner, DENSITY=3

Appendix B Control Panel Menus			437
Item	Values	Explanation
ECONOMODE=	OFF	Turn EconoMode on (to save toner) or off (for high
OFF	ON	quality).
		EconoMode creates draft-quality printing by reducing the
		amount of toner on the printed page by up to 50%.
		CAUTION
		HP does not recommend full-time use of EconoMode. (If
		EconoMode is used full-time, it is possible that the toner
		supply will outlast the mechanical parts in the toner
		cartridge.)
		Note
		It is best to turn EconoMode on or off from the printer
		driver or software application. (Driver and software
		settings override control panel settings.)
TONER	1	Lighten or darken the print on the page by changing the
DENSITY=3	2	toner density setting. The settings range from 1 (light) to
	3	5 (dark), but the default setting of 3 usually produces the
	4	best results.
	5

Print Quality Menu