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Author Topic: Problem converting OpenType (PS) to Type 1  (Read 6480 times)
dpr11
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« on: 2008-11-27, 17:14:06 »

Hi

I have recently bought Adobe Garamond Pro as an OpenType font with Postscript outlines direct from Adobe.  It seems to work well and can be converted fine with TransType PRO on my mac to PC Truetype format.  However when I try to convert it to PC Type 1 format it seems to go wrong.

The conversion completes fine but when I preview the font that is created by dragging it into the source font side of TransType, it appears corrupted - some letters in the alphabet appear superscripted.  It seems to be consistent - all the e's, b's and m's are superscript in Garamond Pro.  This happens with other fonts too, but not all fonts are affected, and different letters in each font.

I want to use the Type 1 font that is produced with OS/2 (I know, ancient, sorry) and when I install it on the OS/2 box, the characters appear superscripted there too - it is quite unusable.  I don't suspect the problem is with OS/2 as the corruption seems to appear in the TransType previewer before it even gets to the OS/2 box.

I've tried various combinations of settings and it doesn't seem to make any difference.

Can you help?

Many thanks.
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Alex Petrov (FontLab)
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« Reply #1 on: 2009-01-14, 11:19:56 »

Just in case you haven't got an answer from Adam Twardoch:

Quote from: Adam
Adobe Garamond Pro contains many glyphs with dots in their names. For
example, the various variants of "A" are called "A.small" or "A.alt" etc.

These are valid glyphnames for new software but older Type 1 engines
(such as the OS/2 font driver and also the FreeType version which
TransType uses) seem not to understand the dot so they parse the
glyphnames up to the dot. Therefore, the font drivers read three glyph
definitions for "A" (as they discard the dot and everything that
follows), and they render the last one that is found in the font (which
is either the small cap or the superior variant).

Adam Twardoch - Fontlab Ltd.
Product and Marketing Manager
http://www.fontlab.com/

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dpr11
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« Reply #2 on: 2009-01-15, 12:06:00 »

Yes, thanks, Adam replied directly to me.

This seems to make sense.  I'll try subsetting the font to remove the alternative glyphs.

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