Originally Posted by tlrowley
Topaz must also have the (OCR'd?) text as well, since it's searchable. What is displayed on the iPhone for a Topaz book doesn't look at all like it does on the Kindle.
From my observations of how TOPAZ ebooks display on a Kindle's screen, they seem to contain an embedded font as bitmaps in six fixed sizes and the "font" is based on scans of the actual document (so some letters could appear twice if it does not scan well and the OCR software ends up with two canonical glyphs). This embedded font is then used for more or less conventional OCR transcription into "text". However, this could be completely wrong. So far as I know, Amazon has never discussed TOPAZ in public.
Is the iPhone font anti-aliased? It isn't on the Kindle, which is one reason I think there are actual bitmaps in the ebook.