[cups] Mac OSX with CUPS 1.7.2 Printing fuzzy on Zebra GK420d

Matthew Warren mw at 78e.co.uk
Tue Jul 15 15:04:20 PDT 2014


Amazing, your filter fixes the issue!

Thank you so, so much for your help, it really has been priceless for us.




On 15 Jul 2014, at 18:23, Helge Blischke <HelgeBlischke at web.de> wrote:

> 
> Am 15.07.2014 um 13:19 schrieb Matthew Warren:
> 
>> Hi there,
>> 
>> We have created a 1 bit image at 203 DPI in PNG format (https://www.dropbox.com/s/ebs2dqf08d1fxy7/1stCLASS-36.png) which when we convert to RAS or PDF using cupsfilter works and prints great.
>> 
>> When we create a PDF and insert the image, then try and print, its coming out bad. When we use cupsfitler (pdftoras) to convert to RAS it comes out bad.  But we can check the image inside the PDF and its exactly the same as the original, it has not been adjusted and looks pixel perfect.
>> 
>> Here is the PDF https://www.dropbox.com/s/17c4uz2z0jjtild/label-noscale.pdf
>> 
>> Any ideas?
>> 
>> Matt
>> 
>> 
>> 
>> 
> 
> Matt,
> 
> I did one more test using your label-noscale.pdf. The results are really disappointing:
> the use of the default filter
> cgpdftoraster
> leads to a quite rugged raster image.
> Obviously this filter internally performs at least two conversion steps using an unknown
> inermediate format.
> The result is the same with Mac OS X 10.5.8 and 10.9.4.
> 
> On the contrary, when using my home-grown gstoraster filter, the result is OK as you described
> when using the original source image.
> 
> So, I'd suggest to modify your CUPS configuration to using my gstoraster filter. Note that
> it requires a fairly recent version of Ghostscript (see the description on sourceforge.net).
> If you happen to have MacTeX installed, version 9.10 of Ghostscript is already installed.
> 
> Helge
> 
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