This problem has nothing to do with iText. Only PostScript Level 3
supports transparency (and all the other printer drivers not postscript
based). You already have the solution, print to a PostScript Level 3
printer, and the workaround, print as image.
Paulo
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On
> Behalf Of Jerold Sampson
> Sent: Thursday, November 09, 2006 3:22 PM
> To: itext-questions@lists.sourceforge.net
> Subject: Re: [iText-questions] Image transparency issues
> related to printing PDF
>
> I tried setting the PDF version but it has no effect on this problem.
> Thanks.
>
> Jerold Sampson
>
> porcupine wrote:
> > Have you tried setting the PdfVersion? eg (java):
> >
> > writer.setPdfVersion(PdfWriter.VERSION_1_3);
> >
> > set this before you do document.open();
> >
> >
> >
> > Jerold Sampson wrote:
> >
> >> I am having problems printing PDF generated with iText.
> The PDF views
> >> correctly with the Adobe reader but must be printed using
> >> PostScript Level 3 or as image. The default printing
> modes result in
> >> image transparency issues, i.e. overlapping images obscure each
> >> other. I have treid many different permutations but can
> not seem to get
> >> around the problem. I am attaching a sample PDF file
> >> stripped down to the offending page content. It views
> fine but prints
> >> incorrectly unless it is printed as image or
> >> PostScript Level 3.
> >>
> >> I am nor clear on how to set the transparency mask and
> have been using
> >> more or less a trial and error method! . . . not my preferred
> >> mode of operation. My lack of understanding on how this
> parameter is
> >> constructed and what it does may be the source of my problems.
> >> The following code snippets are used to add the images to the page:
> >>
> >> if (gray) {
> >> // 8-bit logic (0 black 255 white/transparent)
> >>
> >> int transparency[] = {255, 255};
> >> pdfImage =
> >>
> com.lowagie.text.Image.getInstance(xSize,ySize,1,8,data,transparency);
> >> }
> >>
> >> the above views correctly and prints fine to
> non-PostScript devices . .
> >> . However when printing to PostScript Level 2 it fails.
> (I use CutePDF
> >> driver to test this)
> >>
> >> else {
> >> // 1-bit logic (0 black 1 white/transparent)
> >> //int transparency[] = {1, 1}; // does not work
> ??? (does not
> >> view or print correctly)
> >> int transparency[] = {255, 255}; // views but
> must print as
> >> image
> >> pdfImage = new
> com.lowagie.text.ImgRaw(xSize,ySize,1,1,data);
> >> pdfImage.setTransparency(transparency);
> >> }
> >>
> >> The above views correctly but must be printed as image or
> PostScript
> >> Level 3. The transparency[] = {1,1; does not work as it should.
> >>
> >> I am attaching two 1 page PDFs. One is a bi-level image
> the other is
> >> 8-bit.
> >>
> >> This may be an Adobe reader issue but I would like to make
> sure there is
> >> not something
> >> else lurking around this problem!
> >>
> >> Thanks.
> >>
> >> Sincerely
> >> Jerold Sampson
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
>
>
>
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