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Topic: included graphic affects text rendering, 1 Attachments
Conf: (P-PDF) What's Wrong with my PDF?, Msg: 170260
From: a_jtim
Date: 5/22/2009 01:37 AM

I include an RGBA image in a PDF and the text on that page appears dark, almost bold. The effect disappears after a page break. I convert the image to RGB and the text appears normal.

The effect is most noticeable with Text rendering set to LCD/Flat screen at 40-50% zoom, but it's there no matter what.

The effect does not show up using Sumatra, Multivalent or Apple Preview; only in Adobe Reader (9.1) or Acrobat 8.

I'm creating the pdfs with pdflatex; converting the graphic to RGB fixes the problem. This looks like a bug to me, but I'd like to understand why it's happening.

The attached file has 3 pages. The first page includes the RGB image, the second the RGBA image (text is darkened) and the third uses the RGB image again.

thanks,
--Tim Arnold

Click to open!page2bold.pdf
page2 has rgba image, darkened text. (195,065 bytes)


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