The genuine black Olivetti FPJ20 ink cartridge delivers the sharpest output on plain and speciality paper without compromising speed and printer performance. The small and lightweight Olivetti 84431 ink cartridge is easy to install to reduce downtime, and it holds ink in place without causing leaks and stains on the machine. The original Olivetti FPJ-20 black ink is formulated with a high-quality pigment that ensures sharp lines, detailed monochrome graphics, and crisp fonts with consistent, solid fills. The Olivetti 84431 ink cartridge is suitable for the occasional printing needs of the small office.