You suffered the problem with Ghostscript being used for turning PDF to
PostScript and no limit in the image rendering resolution (resolution
used when non-bitmap parts of the PDF input get converted to bitmap
images in the PostScript output). In addition, Ghostscript compresses
the page data before sending it to the printer.

After installing the package and before doing the first bunch of changes
you are using Poppler for turning PDF into PostScript and the image
rendering resolution limit is 360 dpi. This resembles Ubuntu 11.10 and
you can print with it.

The first bunch of changes leaves you with Poppler for PDF->PS
conversion and lifts the rendering resolution limit completely, so that
always the actual printing resolution is used, even if it is very high.
You can also print under these conditions. But note that without the
resolution limit complex PDFs or PDFs printed with evince can come out
slowly.

After the second bunch of changes you switch back to Ghostscript as
PDF->PS converter. You are again working without resolution limit. The
difference to the original configuration with which you have observed
the bug is that now the PostScript output of Ghostscript is not
compressed. The "psdebug" option turns off Ghostscript's page
compression. As you can print with this configuration it seems that
Ghostscript's compression is the culprit for the bug. So stay with this
configuration and observe how printing works for you with it, especially
also with other applications than LibreOffice. We are looking into
making this configuration the default for Ubuntu Quantal (12.10).

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https://bugs.launchpad.net/bugs/978120

Title:
  Toshiba Estudio 230 printer driver bug

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