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Losing image quality

Oct 10, 2014, 15:02
Post: #1
Losing image quality
Hi, I am doing a favour for a friend and have hit a problem. He has a three colour image which is to be screenprinted onto fabric. I have been tidying it up so it is excactly three colours, apparently necessary for the printing process. However, when I save my version the resulting file always has a fuzzy border in darker shades of the original colours. Am I using the wrong file type, or something else?

Here is the image in gimp:
[Image: Screenshotfrom2014-10-10153513_zps82f02257.png]

Here is the saved (no compression) tif file:
[Image: Screenshotfrom2014-10-10154931_zps16980728.png]

Hope someone can help me out here, thanks.
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Oct 10, 2014, 16:07
Post: #2
RE: Losing image quality
You need to ask the printing company what they require.

A screen print is just a series of masks on a material with some blocking material (for home/amateur use traditionally muslin/wax) which allows a pigment to cover part of the paper or fabric. These days a process using photosensitive material is used.

Your images are all 800 times zoom are they maybe parts of t-shirt printing?

Maybe separate layers for each colour will do,

[Image: Ovvmwgb.jpg]

More probably a four colour CMYK required. If so, a can of worms, Gimp maybe not the best for this.
Whatever is required, the bit of anti-aliasing show on those screenshots will not make any difference.

** now answering questions**
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