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E Ink launches Kaleido 4 color ePaper with doubled gamut

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E Ink launches Kaleido 4 color ePaper with doubled gamut

E Ink (8069.TW) announced E Ink Kaleido 4 in a press release dated October 15. The company describes it as the latest generation of its color ePaper platform, with improvements in color performance, brightness and contrast meant to support a more detailed and fluid ePaper experience. The first end-product to use it, according to E Ink, is the M10C II smart ePaper notebook from Hanvon Technology, which the release calls a leader in China's eReader market.

E Ink's argument is that ePaper has moved beyond eBooks into classrooms and workplaces, where the content includes color PDFs, PowerPoint presentations, data charts, educational illustrations, science and technology reference materials and engineering drawings. Color ePaper therefore needs a better balance of color, brightness, contrast and clarity.

Compared with the previous generation, which the release does not name, Kaleido 4 doubles its color gamut volume to more than 40K, increases white reflectance by 15% and improves contrast by 50%. New algorithms let it play video at up to 18 frames per second. E Ink says these changes let color ePaper show not only text but also images, charts, presentations and video with greater clarity, while reducing the perception of screen graininess.

E Ink Chairman and CEO Johnson Lee said: "Color ePaper needs to deliver more than simply 'color.'" He added that E Ink is pleased to work with Hanvon to launch the world's first product featuring Kaleido 4, expanding next-generation color ePaper across professional reading, learning and mobile office scenarios.

On the M10C II, Kaleido 4 brings a new oxide TFT backplane that supports higher driving voltages and faster screen refresh. Combined with Hanvon's proprietary "Enhanced Pressure Floating" technology and its T2000 timing controller, this gives 27% faster page turning and scrolling; the release does not state the baseline. A redesigned front-light system is said to deliver clearer, more natural color. The notebook pairs the display with Hanvon's OCR, voice and AI-powered office applications, plus cloud library synchronization, ripple-reduction technology, responsive third-party app scaling and optimized font rendering. For handwriting, its wireless, battery-free digital pen offers 8,192 levels of pressure sensitivity, and a micro-etched tempered-glass surface reduces glare and parallax while giving paper-like writing resistance.

Hanvon Vice President Wang Jie said the M10C II debut is "not simply a screen upgrade": Hanvon has systematically optimized the display, fast refresh, handwriting, recording and AI capabilities, and hopes to take color ePaper beyond reading devices into productivity uses such as R&D tools, professional document review, meeting records and mobile office applications.

All figures come from E Ink's own release.

Key facts

  • E Ink says Kaleido 4 doubles color gamut volume to more than 40K, raises white reflectance by 15% and improves contrast by 50% over the previous generation.
  • New algorithms allow video playback at up to 18 frames per second.
  • Hanvon Technology's M10C II smart ePaper notebook is described as the world's first end-product with Kaleido 4.
  • On the M10C II, an oxide TFT backplane, Hanvon's Enhanced Pressure Floating technology and the T2000 timing controller give 27% faster page turning and scrolling.
  • The M10C II pairs the display with OCR, voice and AI-powered office apps and a battery-free pen with 8,192 pressure levels.

Why it matters

Color ePaper has mostly been pitched for reading. E Ink frames Kaleido 4 as a push toward charts, slides, engineering drawings and even video, which is where weaker color and contrast have limited it. The headline claims are a gamut volume doubled to more than 40K, 15% higher white reflectance and 50% better contrast, plus video at up to 18 FPS. The release says these also reduce the perception of screen graininess.

Who it affects

The release targets makers and buyers of eReaders and eNotes, and people who read or work with color PDFs, presentations and technical material on ePaper. Hanvon, a leader in China's eReader market per the release, is the first to ship it. No other device makers are named.

How to use it

Kaleido 4 is a display platform, so the only product named is the Hanvon M10C II smart ePaper notebook. Its listed features include OCR, voice and AI-powered office applications, cloud library synchronization, a wireless battery-free pen with 8,192 pressure levels and a micro-etched tempered-glass surface. The release gives no price, shipping date or market availability.

How solid is it

This is a vendor press release, and every figure is E Ink's own. The release gives no units or test conditions for the gamut, reflectance, contrast, frame-rate or 27% figures, does not name the previous generation, and cites no independent testing. The 18 FPS figure is a stated maximum. The 27% page-turn gain is attributed to the backplane combined with Hanvon's own technology and controller, with no baseline given.

Risks and caveats

Treat the numbers as marketing claims until reviewers measure them. It is not stated whether the 18 FPS video is in color or what it looks like on the M10C II specifically. The release gives no screen size, resolution or pixel density, so real-world sharpness cannot be judged from it. The year of the announcement is not given in the text, only October 15.

“Color ePaper needs to deliver more than simply 'color,'”

— Johnson Lee, Chairman and CEO of E Ink