# How does the digital ink in ereaders work?

- URL: https://talkfuse.com/story/how-does-the-digital-ink-in-ereaders-work/
- Published: 2026-11-07T17:00:00+00:00
- Updated: 2026-11-07T17:20:54+00:00
- Original publisher: Engadget
- Original article: https://www.engadget.com/2306305/how-does-ereader-nook-amazon-kindle-digital-ink-work/
- Topics: Gadgets

## Key points

- E-ink pixels hold their state without constant power.
- Reflecting ambient light helps create a paper-like reading experience.
- Slow refresh and limited colour constrain video and image quality.

## Summary

E-readers use electronic ink to produce a paper-like display that can remain visible without continually using power. This helps explain their long battery life and comfortable reading experience, while also limiting their suitability for fast-moving video and richly coloured images.

Tiny capsules contain particles that shift when brief positive or negative electrical charges are applied; once moved, the particles stay in place until the screen changes. Some colour displays use multiple particle types, but the article says leading E Ink products show up to 4,096 colours, compared with 16.7 million on even basic LCDs. E-ink also refreshes too slowly for smooth video, although 60Hz panels have recently become possible.

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Summarised by TalkFuse (https://talkfuse.com/). Quote the original publisher for the reporting and link this page for the summary and discussion.