[Gimp-user] Printing 24" x 36"

[21stDigitalBoy <forums gimpusers com>]

When printing engineering/architectural prints at 24" x 36" the prints show
pixelation around all of the lines.  I saved the image as .png at 300 DPI.

I use Staples for my printing and they turn the .png into a PDF before printing.

I'm curious if I should be exporting as s a .tiff or another file format.

And what resolution should I set? 

Is the issue caused by transparency, RGB?

I've attached images of the prints that show the pixelation/artifacts. 

Attachments:
* http://www.gimpusers.com/system/attachments/489/original/IMG_20170224_105240816.jpg
* http://www.gimpusers.com/system/attachments/490/original/IMG_20170224_105248610.jpg
* http://www.gimpusers.com/system/attachments/491/original/IMG_20170224_110838403.jpg

-- 
21stDigitalBoy (via www.gimpusers.com/forums)