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Why are Bitmap-Fonts used automatically?

With the following code, I am getting this jaggy output, which is not the purpose of using latex.

PS: This never use to happen, when I use to create other documents.


...to write...
...still feel...

enter image description here

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marked as duplicate by Matthew Leingang, Lev Bishop, Caramdir, Sharpie, lockstep May 2 '11 at 15:44

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

up vote 9 down vote accepted

Original Computer Modern fonts are embedded in the document in a raster format. The resolution is sufficient to print fine in most cases, but it can cause trouble when viewing on-screen, as you've found out. At the time TeX and METAFONT were designed, software rasterising was a reasonable solution.

You should use vector fonts instead, which are the way to go in the modern world. To do this, simply install the cm-super package. Alternatively, you can try the Latin Modern fonts (use with \usepackage{lmodern}).

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It never use to happen before, as in, I have create many documents, this never happened. – Prabhanjan Naib May 2 '11 at 11:37
@Kirk: The other question suggests it is triggered by loading fontenc. – Andrey Vihrov May 2 '11 at 11:39
the T1 font encoding will make the document use the EC-fonts which are distributed as bitmap TeX fonts. Using cm-super or lmodern leads to scalable fonts in the pdf output. – jfbu May 2 '11 at 11:56

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