Here is an update of my previously posted NimbusMod font, which, as before, has been embedded into a sample EPUB so you can preview it.
Through the Looking Glass (NimbusMod1.5).epub
NimbusMod is a font that I have modified extensively to look as nice as possible as a reading font on an eInk device. The font weight, spacing, and character outlines have all been tweaked for maximum readability.
The 1.5 version has had some minor spacing changes to several letters to improve kerning, and had the upper case letter Q descender tweaked a bit to make it slightly more prominent vs. the previously released version of NimbusMod. This should help the letter "Q" be more easily distinguished from an upper case "O" at smaller font sizes.
As stated above, I have embedded the NimbusMod font in a sample EPUB so you can easily check it out on your Sony by simply loading this EPUB file (note the custom NimbusMod font starts on page four, prior to that the original Sony font is used, so you can compare the two within the same document)
Don't worry, when you load embedded fonts like this, they do not make any changes to your readers configuration, and will only show up in the document that they are embedded in.
If you would like to use the NimbusMod font, just change the EPUB extension to .zip and un-zip it , then you will find the two font files in the OPS/fonts folder -
NimbusMod.ttf -- is the regular standard weight font.
NimbusMod_I.ttf -- is the italic standard weight font.
I did not create bold versions of this font for the Sony, because the built in Sony font rendering will take care of creating a bolded version if you don't supply one, and in this case, it's algorithm does a really nice job, so there is no reason to install or embed a bold version.