RBI's Secret Ink: How Gandhiji's Image is Printed on Rupee Notes!

• RBI uses Intaglio ink to print Mahatma Gandhi's image on Indian Rupee notes.
• Note printing occurs at four locations: Dewas, Nashik, Mysuru, and Salboni, managed by SPMCIL and BRBNMPL.
• Special cotton paper for notes is imported from Germany, Japan, and the UK, while security ink comes from Swiss companies.
• Other inks include Fluorescent ink for number panels and Optical Variable Ink for anti-counterfeiting measures.
• Note printing costs thousands of crores annually, with a peak of ₹7,965 crores during 2016 demonetization.

Why It Matters: RBI uses specialized imported inks and paper to print secure Rupee notes, including Intaglio ink for Gandhiji's image.