You should start using Paper Saver ink with a new printer that has clean, empty ink tanks. If you put Paper Saver ink in printer that had regular ink in it before, the old ink will contaminate the Paper Saver ink so that it is no longer self-erasing.
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EPSON 502 EcoTank Ink Ultra-high Capacity Bottle Black
OFFICENTER High Capacity T502 502 Ink Refill Bottles
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Get thousands of pages (1) Save up to 90 percent on ink with low-cost replacement bottles vs. ink cartridges (2) Ultra high-capacity EcoFit ink
EPSON 502 EcoTank Ink Ultra-high Capacity Bottle Black Works with ET-2750, ET-2760, ET-2850, ET-3750, ET-3760, ET-3850, ET-4850, and other select
Disappearing Ink for Printers Saves Paper
The compatible printers are sold in the United States and Canada. Choose the Black/Grayscale and plain paper settings to print with Paper Saver Ink.
Blue Planet Ink Paper Saver® 245 XL Disappearing Ink for Canon Inkjet Printers
EPSON 502 EcoTank Ink Ultra-high Capacity Bottle Black
Blue Planet Ink Paper Saver® 245 XL Disappearing Ink for Canon