Blurry printed raster images with Brother MFC-8840D

Posted by Adam Monsen on Ask Ubuntu See other posts from Ask Ubuntu or by Adam Monsen
Published on 2010-12-01T19:55:05Z Indexed on 2010/12/31 22:59 UTC
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10.04

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printing

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cups

(NOTE: crossposted here: ubuntuforums.org/showthread.php?t=1621795)

I've got a Brother MFC-8840D. Works great with Ubuntu server! Setting up a CUPS print server was pretty straightforward, and I also finally got network scanning working reliably with saned. Printing documents and Web pages works well: fonts are crisp/clear, etc.

One issue has got me completely vexed: printing raster (ie: JPG) images. They are blurry. For example, I can scan a page of black and white text at 150 or 300 dpi. The grayscale image looks perfect on my monitor. But the printed version is much blurrier than the original, regardless of the "print resolution" dpi I choose.

As a counterexample, if I use the "copy" function of the MFC-8840D, the copy looks excellent, and this function is much, much faster than if I scan then print a scan of same.

I've googled around a bunch and tried different tricks (printing a PDF with the image from evince, printing with Gimp, EOG and other applications) but I just can't print anything that looks as good as a copy made with the MFC-8840D.

Any ideas?

I'm using Ubuntu 10.04.1 LTS server. I'm using the PPD file from solutions.brother.com.

Thanks, -Adam

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