PDF Negative converter

I have used Paperport (Nuance software) and created a paperport copy. 'Inverted Colors' and saved back to pdf (or tiff- I find tiffs easier to use in CAD).

11 pages is alot of data. If you want me to try and have a way to get it to me, let me know in a followup post.

I was frustrated by this as well. I tried a bunch of different pdf software. What finally worked best for me was to email the doc to Kinko's, ask them to print as a pdf in negative. They had it back to me in less than a half hour for a nominal fee.

Thanks for the offer, but that's too much to ask.

R

The basic process I would use would be something like this...using Adobe Acrobat I would save the PDF as images, probably .tif, then open the images in a photo editing program like Photoshop, or even Irfanview, invert the colors, then print.

The more difficult part would be to get the plats printed to scale. You will probably have to insert them into AutoCAD and print from there after scaling the image.

Sounds complicated, but really only would take 10-15 minutes.

All these above idea are formidable and will work. I'd tend to just call the guy back and tell them you don't want black backgrounds with white text. Fix it and send me new files. I guess you could charge them for the extra ink, etc, but that's like pharting in church. Not really difficult in the big picture.

$0.02

PDF: invert colors

Open in PhotoShop or PhotoShop Elements.
MENU | Image | Adjustments | Invert
MENU | Save (as pdf, tif, etc)

If you don't have PhotoShop, possibly Ghostscript may be capable of inverting colors.

If you have Adobe Acrobat, you may want to look into the advanced print set up.

There is an option (if you have selected a Post Script printer driver) to output the print as Composite Gray, which will enable the "Negative" option.

"Selecting this option will print the document reversed. For example black will appear as white on the resulting output."

I brought up a drawing in Adobe Acrobat Pro and went to "Print".
I changed the printer to print to a pdf file.

I then went to an "advanced" button" in the lower left of the window.
In the "advanced print setup" I had "print as image" unclicked,
and changed under "Output" the color from Composite to "Composite Gray".
In the next line I clicked on the "Negative" box.

I clicked the "okay" from there and printed with "Choose paper source by pdf page size" and "none" on pdf page scaling.

It seemed to create a new pdf with the black and white reversed and it looked pretty good. I think you could mess with the "resolution" and the dpi for the output as well to get it as you like it. I did "high resolution, and the maximum dpi.

Edit: I was printing from Acrobat Pro, but it was advanced print settings, so I am wondering if you can't do that from the print settings from whatever software you are bringing it up in.

IRFanView is a free program that has some fantastic features. Download it, and also get the advanced plug-in download and install that too (painless. (go to download.com or CNet)

You will have to convert your PDF to an image file, but IRFanView has a negative filter, you can then save it back to PDF within the program. I use this for the old plats that are negatives, and it works great.

BTW, IRFanView has fantastic batch operations for scanning, converting images and renaming that can't be beat for the price! One of the very few free programs out there I would pay for.

Thanks for that info. I use Irfanview and wasn't familiar with the save as PDF option.

Interesting it can make a PDF, but not open one.

That is a great feature, printing that out and pasting on the clipboard by my computer.

:good: