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I successfully converted a .doc to pdf using this command: 

$result = exec('"C:\Program Files (x86)\OpenOffice 4\program\python.exe"
D:\wamp\www\doc_to_pdf\libobasis4.4-pyuno\unoconv -f pdf -o
D:/wamp/www/doc_to_pdf/files/'.$pdf_File_name.'
D:/wamp/www/doc_to_pdf/files/'.$doc_file_name);

the reference at Convert Word doc, docx and Excel xls, xlsx to PDF with PHP, also using openoffice and unoconv.. When I convert document with all font color black.. the ghostscript detect still contain color -o - -sDEVICE=inkcov E:/myfile.pdf

How to fix it?

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enda
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  • what is a "gost script detect"? – Stefan Hegny May 03 '17 at 09:42
  • sorry thats a typo, the correcct is ghost script the docs here https://www.ghostscript.com/, i use ghost sript to detect total inkk coverage – enda May 03 '17 at 14:29
  • Hm, you mean that it does not look like this `Page 57 0.00000 0.00000 0.00000 0.04758 CMYK OK' with only the last K (black) column nonzero? – Stefan Hegny May 03 '17 at 21:08
  • had a look at this https://stackoverflow.com/questions/12299574/ghostscript-color-detection?answertab=votes#tab-top ? Which would basically say if all columns are equal it will also look black(gray) – Stefan Hegny May 03 '17 at 21:10
  • @StefanHegny yes do not like this example Page 1 0.00000 0.00000 0.00000 0.04758 CMYK OK,,,, my file doccument contain all black font,, but ghost script still detect color.. – enda May 04 '17 at 05:51
  • but when i convert my document in https://www.freepdfconvert.com/,, the ghost script detect all black font , and the correct result like,, Page 1 0.00000 0.00000 0.00000 0.04758 CMYK OK – enda May 04 '17 at 06:06

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