Someone ran some dollar bills through their Epson printer last week. It will work, but we need to use PIGMENT based ink. Its not permanent like real India ink, but it is close. The ink we use in our ink jets in usually dye based and it runs bad when wet. Pigment based Epson 502 compatible ink. This black is pigemnt based: https://www.amazon.com/dp/B08MK4NQ2L