Hi everybody,
we are using pdfbox to create PDFs for print production end encountered a
problem using PDExtendedGraphicsState. PDFExtendesGraphicState offers the
possibility to set the "overprint mode" (OPM):
/**
* This will get the overprint mode(OPM).
*
* @param overprintMode The overprint mode
*/
public void setOverprintMode( Float overprintMode )
{
setFloatItem(COSName.OPM, overprintMode);
}
This leads to an floating point number entry in the PDF-Document like this:
9 0 obj
<<
/Type /ExtGState
/OPM 1.0
/OP true
/op true
>>
Endobj
According to the PDF specification
(https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf),
page 129, OPM is defined as:
Key: OPM
Type: integer
Description: (Optional; PDF 1.3) The overprint mode (see 8.6.7, "Overprint
Control")
The document should look like this:
9 0 obj
<<
/Type /ExtGState
/OPM 1
/OP true
/op true
>>
Endobj
The current implementation leads to processing erros, for example in the
Harlequin RIP with following error-message :
%%[ Error: undefinedresource; OffendingCommand: PDF opcode Do; File: %ip:xyz%
]%%
We can work arround the problem creating the PDExtendedGraphicsState with an
own Dictionary and set the OPM directly:
COSDictionary dict = new COSDictionary();
PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState(dict);
dict.setInt(COSName.OPM, 1);
If you need more information please contact me.
Mit freundlichen Grüßen
Gerhard Hiller
mailto:gerhard.hil...@msh.de | Phone: +49 711 72007 4163 | Mobile: +49 172 718
48 46
Printproduktion neu gedacht
- -
MSH Medien System Haus GmbH & Co. KG, Stuttgart, HRA 9274 Stuttgart
P.h.G.: MSH Medien System Haus Verwaltungsges. MbH, Stuttgart, HRB 4443
Stuttgart
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