E Ink unveils Kaleido 4 color e-paper with better color, contrast and speed

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E Ink has announced Kaleido 4, the next generation of its color e-paper screen technology. The current Kaleido 3 displays appear in e-readers and tablets from Kobo, PocketBook, and Boox, and Amazon's Kindle Colorsoft uses a customized version of it. The new technology is designed to fix shortcomings of its predecessor, offering improved color reproduction, stronger contrast, and faster screen refreshes. The announcement highlights E Ink's ongoing effort to make color e-readers more appealing alongside its other display technologies.

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