General ⇒ PS/EPS vector graphics to PDF go gray

[vhii]

Hi,

I've noticed a slight anomaly when converting ps to pdf files (ps2pdf with Miktex):
The images become slightly gray, instead of retaining their original black color.

This does only apply to pure vector graphics that I am trying to convert (e.g. my university's logo, or vector graphics that I have made
using other software). This phenomenon does not occur when converting normal text, or when converting figures that I have created using pstricks.

So what is it about vector graphics going gray? I've included a picture to illustrate my "problem". It's very slight.. but still.

[Stefan Kottwitz]

Hi vhii,

did you try another pdf reader? Or printed it to compare it on paper?

Stefan

[vhii]

Thanks for your reply. Strangely enough, Ghostscript displays the PDF as I'd like it to. However, I get the same gray result in Adobe Reader as well. I don't think any difference will be visible when the file is printed out, even on screen it's only noticeable with sufficient enlargement.

I've been trying around a bit: I've had success converting vector files to PDF using Inkscape. This way the color remains black even with my viewer. It's a workaround that works for me, but maybe somebody can still shed some light on this..