Diraba — felt
Raised printing (intaglio)
Printing that feels rough to the touch, because the ink stands above the surface of the material.
Sweep the light
A screen cannot convey touch, but it can show the other consequence of raised printing: ink standing above the surface catches light from a low angle and shadows the far side. Move the light around.
20°
The surface here is a run of plain ridges, not the engraving on any note. It shows how relief catches light — it is not a substitute for feeling it. For that, still take out a note.
The ink does not sink flat into the material. It remains as a ridge standing above the surface — and that ridge is what a fingertip reads.
What to observe
- 01Run a fingertip over the main image, the hero portrait, the denomination numerals, and the state emblem. They feel rough, not flat like ordinary paper.
- 02Moving a fingertip sideways usually reads more clearly than pressing straight down: the fingertip reads the edge of the relief, not its height.
Appears on
This page explains how to check a feature, not how one is produced. Nor does this site say whether any note is genuine — that authority rests with Bank Indonesia.
Sources
- Bank Indonesia — Gambar Uang — Rp100.000 Tahun Emisi 2016, Unsur Pengaman ↗open source: Gambar Uang — Rp100.000 Tahun Emisi 2016
- Artech House — R. L. van Renesse, Optical Document Security, 3rd edition (2005), Ch. 2, Intaglio printing