Overview. It's easy to get consistent, professional results with the 6-color Original HP printhead, designed together with your printer as an optimized printing system. Ideal for design and engineering teams producing high-quality, professional drawings. It's easy to get consistent, professional results with the 6-color Original HP printhead, designed together with your printer as an optimized printing system. Features. Produce consistent, professional results. Virtually trouble-free—intelligence built into HP supplies and the printer optimizes quality, reliability. Save time with hassle-free printing. Designed to provide consistent high quality and reliable performance that enable less downtime. Easy-to-use printhead fits the way you work. Designed with your HP Design. Jet printer, the HP 7.7 Printhead is easy to replace