The pigment-based Epson C13T850700 light black ink cartridge achieves superb black & white photo quality. You can easily produce black & white photos with better details & gradation levels using the light black Epson C13T850700 ink, which delivers better contrasts. The Epson T8507 light black ink is formulated using Ultra Chrome HD technology, a pigment ink with exceptional lightfastness. Users can achieve a higher Dmax with the Epson T8507 light black cartridge.