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Author Topic: Export pdf for printing with bitmap 1bit black and white line art  (Read 2273 times)

martinpm

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Hi,

I'm working on Scribus 1.4.1 with MacOS 10.7.5. I imported some 1bit black and white line art files saved in tiff with GIMP, at 900dpi.

I created and exported a pdf with Scribus, in "PDF 1.4", with "automatic compression" and "maximum quality". Unfortunately, when I tried printing my pdf, my lines looked a bit dotted and fuzzy on the paper. If I print my tiff files directly from GIMP, the line is perfectly clear.

Is there something wrong or something I forgot to look in my exporting preferences?

Thanks in advance,
Martin

a.l.e

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Re: Export pdf for printing with bitmap 1bit black and white line art
« Reply #1 on: September 20, 2012, 07:21:23 pm »
hi martin,

you should probably use "no compression" or "zip compression", since automatic will probably convert your images to jpeg...

just guessing, though...

ciao
a.l.e

martinpm

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Re: Export pdf for printing with bitmap 1bit black and white line art
« Reply #2 on: September 20, 2012, 09:52:02 pm »
Thank you for your answer. Unfortunately, it doesn't change anything. Searching on the web, I found something: it seems that the developers are working on the issue for the version 1.5.

Quote
In addition to explicit grayscale support listed in the bug above, Scribus should special case 1 bit B&W images. Currently they are always resampled to 8 bit grayscale images, which is wasteful. 1 bit images should always be output in the PDF as 1 bit grayscale images, regardless of output mode (i.e web/grayscale/printer).

http://bugs.scribus.net/view.php?id=11029