HP Office Paper is ideal for everyday, high-speed performance with excellent print quality. It is specifically designed for maximum runability on high-volume copiers & printers. Key Features Fully compatible with all types & makes of printers A4, 80 gsm paper weight Colorlok Technology 165 CIE Whiteness FSC Accredited EU Ecolabel Accredited 500 sheets Color Lok Technology Color Lok Technology is the new standard for better print quality. Paper that’s qualified with the Color Lok logo is able to produce the best possible digital prints. The Color Lok standard of performance is for plain-paper output with inkjet & laser printers, as well as common copy machines. As such, Color Lok papers will provide consistent & reliable printing regardless of which machine is used. Paper products that carry the Color Lok logo represent a standard for enhanced home & office printing for both inkjet & laser printers. When the Color Lok logo appears on paper packaging, it assures printer users that the printed output is of the highest quality. Papers with Color Lok Technology offer enhanced recyclability because the ink stays on the surface of the paper. Removing the ink from the paper is a key step in the recycling process & is made easier with Color Lok Technology.