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Re: [Homebrew_PCBs] inverting

2002-06-06 by Adam Seychell

I wrote a simple program that plots Gerber RS-274X files to a TIFF at 
any specified resolution. There is an option to make negatives. I 
haven't supported all the features of the RS-274X standard but it should 
work fine with Protel. If you have any questions then feel free to 
contact me. There is a lot more work needed to turn it into a useful 
tool. note: GERB2TIF is a Win32 console app.

http://www.alphalink.com.au/~seychell/gerb2tif_04.zip


Dwayne Reid wrote:

>At 03:16 PM 6/5/02 -0700, Randy Knutson wrote:
>
>>Hi:
>> I was wondering if anyone knew how to invert a printed circuit board 
>>image? I am using protel 99se and I can print a positive of the image 
>>just fine but I am trying to find a way to invert this image turning it 
>>into a negative. Protel allows you to export an image as a windows media 
>>file but when I do this and take it into an image editing program such as 
>>paint much resolution is lost. I am trying very hard to avoid the process 
>>of printing, scanning and reprinting. Any suggestions would be greatly 
>>apprecitated!
>>Thanks,
>>Randy Knutson
>>
>
>There are several solutions.
>
>1) Print artwork files to disk as HPGL and use PrintGL 
><http://www.concentric.net/~ravitz/> to do what you will with them.  This 
>is the method I use.
>
>2) Print artwork files to disk as Gerber and use one of the freebie Gerber 
>viewers to print the file.  I *think* they can do a negative but I'm not 
>sure.  Look for GCprevue from <www.graphicode.com> or ViewMate 
><www.lavenir.com> i
>
>I think highly of Cary Ravitz's PrintGL - so much so that I purchased a 
>licence several years ago.  I use it several times each week.  Do note that 
>the software is not crippled in any way - it works the same if you pay for 
>it or not.  Only your karma knows the difference!
>
>dwayne
>
>--
>Dwayne Reid   <dwayner@...>
>Trinity Electronics Systems Ltd    Edmonton, AB, CANADA
>(780) 489-3199 voice          (780) 487-6397 fax
>
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