toner cartridges go through a rigorous quality control process to ensure maximum
results throughout the entire printing cycle. You may find that lower grade
replacement toner cartridges may have similar output quality when printing the
initial thousand pages, but will decrease in the sharpness lose its printing
density of its printouts near the middle or the end. This is caused by uneven
toner density distribution from the replacement toner cartridge. ION toner
cartridges are carefully manufactured to ensure even printing density. This
allows for a longer lifespan of your toner cartridge and consistency of
providing you High Definition Printouts for your personal and office printing
needs. COMPATIBILITY Samsung ProXpress M4020 Samsung ProXpress M4020ND Samsung
ProXpress M4070FR Samsung ProXpress SL-M4070 YIELD 15000 pages
