Quote:
Originally Posted by ardeegee
With this, you are probably seeing the difference between 2 "color" mode pages (plain text) and 16 "color" mode pages (illustrations, photos, etc.) which refresh in more than one step in quick succession.
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This is an excellent point. I think the reader is always in at least 4 color mode, so that it can anti-alias the fonts, but 16 level gray scale photographs and illustrations do require special handling.
Again, due to the micro-mechanical details of e-ink, to get the fine gradation of 16 shades, while avoiding ghosting, they use a more complex page refresh sequence.
The reader is smart enough to sense whether the next up-coming page is simple 2 color text only black and white or whether it has something like an illustration or photograph, and picks the refresh sequence that it needs automatically.