Hey everyone out there.
I was hoping for any suggestions on a problem I have encountered. I have noticed on my drawings that have a hatch transparency (does not matter the percentage), that in CAD everything is fine, but as soon as I plot to pdf, the pdf image will have a lot of streaking in the transparency(there is no streaking in the preview window).
No matter the transparency or colour, the streaking remains very obvious. I was wondering if anyone has experienced this, or could provide some insight as to wether this is a CAD problem or a Adobe problem, or some functionality I am missing?
thanks very much for your time.
Regards - Brett
neilyj (No connection with Autodesk other than using the products in the real world)
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Hi,
most common is not AutoCAD creating that, but the viewer, that are showing that.
If you use Adobe Reader then you can go to settings ==> page display ==> disable:
- 2D graphic acceleration
- smooth vector graphics
- enhance thin lines
Sorry not to know the exact wording as I'm using the german one.
HTH, - alfred -
We've noticed this problem with the standard autocad pdf driver. The streaks tend to be along lines between vertices along the edge of the hatch. I've attached a screenshot (a transparent hatch over an aerial photo) as an example.
The problem doesn't exist if we use a 3rd party pdf print driver to create the hatch (but that breaks the OSNAP and Layer control you get from the Autocad driver).
It'd be nice to get it fixed...
Hi alfred.neswadba
I have tried your suggestion but it actually makes it look worse.
When Plot-ing using Adobe PDF or CutePDF it works fine, no streaking.
When using the “Output > Export to PDF” tool the streaking happens.
I believe it uses the “DWG to PDF.pc3” to do the “export to PDF” as when I plot using the “DWG To PDF.pc3” the streaking accrues.
When I delete the DWG to PDF.pc3 and try to export to PDF it fails.
I remove all PDF printers and it can still export to PDF.
I believe it has nothing to do with any PDF printers, but I might be wrong. Any thoughts?
I’ve attached what my problem looks like.
Thanks
Regards – Rory (Brett’s IT guy)
Hi,
am I right that you have a image to plot (where these stripes occur)?
Is this an OLE-object or a IMAGE-reference?
>> When Plot-ing using Adobe PDF or CutePDF it works fine, no streaking.
If you have the option, use it. There is no advantage creating the PDF with _EXPORT (compared to _PLOT).
- alfred -
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