What Is MICR Ink Made Of?
MICR characters are printed on documents in one of the two MICR fonts, using magnetizable (commonly known as magnetic) ink or toner, usually containing iron oxide.
If you tried to make a MICR Inkjet cartridge, all the magnetic particles would simply settle to the bottom, and you'd be left with regular ink. So the right kind of ink simply is not available. ... It is even possible to buy MICR toner cartridges specifically for check printing.
Laser Printing, Magnetism, and You: How Self-Printed Checks Affect ...
A ferrofluid is used in the manufacturing of the magnetic ink. A ferrofluid consists of collidal particles (nanoscale) composed of iron(II) and iron(III) compounds such as FeCl2 and FeCl3. ... The mixture is then transferred to a clear plastic cup and stirred while holding a strong magnet on the outside of the cup.
“The chemistry of US currency – Magnetic ink” Sharing ...
What is MICR made of?
The MICR includes, from left, a nine-character routing number, a 12-character account number, and a four-character check number. It is called a magnetic ink character recognition line in reference to the print technology that is used to enable a machine to read, process, and record information.
Magnetic Ink Character Recognition (MICR) Line Definition - Investopedia