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creating black&white pdf

Posted on 2000-04-07
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Last Modified: 2013-12-02
I've a lot of postscript files, with different carachteristic, and I nedd to translate in PDf files, containing only black&white drawings.
Is it possible to configure the distiller to obtain a monochrome pdf?
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Question by:anacleto
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weed earned 200 total points
ID: 2694085
No, Distiller cannot take a postscript file containing color and translate it into a PDF containing only black and white. That switch must be done BEFORE you create the postscript file.
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by:anacleto
ID: 2712562
I was told that is possible to create a postscript file that redefines the colour to balck, and that exists an options for launching the distiller with an option to use this file like an epilogue or a prologue.

The problem is that I'm not able to create such files?
Can you help me?
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by:weed
ID: 2712632
I think i just covered this for you but to repeat: No distiller wont convert from color to greyscale. It can do color management but thats only between two profiles and not between color spaces. I have distiller here in front of me and just double checked to make sure i havent missed any preferences and no, there are no color->black&white translation preferences.
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Author Comment

by:anacleto
ID: 2712700
I understand that it's not possible to translate automaticaly, and I'm not prepared on this topics.(that is the reason why I'm posting here)

But I was told that the postscript language has a remapping function that allow the user to switch color (from red to black, for instance),inside a drawings.
Moreover I was told is possible to use this ps feature to join two ps file to obtain a single pdf file in B&W.


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Expert Comment

by:weed
ID: 2712833
Either way you still have to go through Distiller. There may be 3rd party items out there to remap 1 color to another color BUT you have to know exactly the values of the color you want to change and exactly the color you want to change to. "Red" or "Blue" isnt going to cut it since there are an innumerable number of values of red, blue, green etc etc. Im also sure that that function only works for postscript art and not for bitmapped images. It wouldnt know how to handle the AntiAliasing which would result in weird effects. As far as joining two PS files together the ability to remap colors has nothing to do with it. Its just a matter of editing the PDF file and adding in more pages from another PDF (formerly a PS file). That you can do with Distiller and Acrobat 4.
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Author Comment

by:anacleto
ID: 2715050
The original PS files is a CAD DRAWINGS, so the color used inside are basically three, not more(one for each kind of line type we use).
So I'm confident that I will discover exactly the color definition that I need to replace.

When I'm speaking about joining two ps files, I'm speaking about the distiller option join epilogue/prolgue pf files.
Otherwise, I will use a perl or ks script to tranlaste  the colors.

In the  second case I only need to discover wich ps command define pen's color.
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by:weed
ID: 2716438
Ever popped open a PS file with a text editor?...happy hunting..heh..Its probably easier to go back to the origional cad drawings and change the colors there before going to PS.
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Author Comment

by:anacleto
ID: 2716457
The drawings are more than 10.000.
I'm hoping to find an automatic way to solve this problem.
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