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I'm not sure what the "blink" is that you're referring to. But typically an eInk screen is refreshed in a couple stages. First you either draw the screen to all white or all black or you draw a "reverse" of the current page on the screen (depending on device), then you draw the new page. It's done that way on purpose because it helps to reduce a lot of the "ghosting" effect of current eInk technology. Maybe that's the blink you're talking about? You can make a device that skips that step, but there are usually drawbacks to it.
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