Temp files leaved behind after printing.

[cmarsura]

HI,
I noted that the PDFXChange Viewer leaves behind in the temp folder some files that are removed only after reboot.
Printing the same pdf (see included) with same version of viewer (2.5.201) on different Windows 7 SP1 32Bit machines gives different result: on some machine the temp files are created and on some other no. Why ?

This problem is very nasty because if I go to print several files the temp folder become cluttered of files that are removed only on reboot.

Thanks.

Carlo Marsura

[Stefan - PDF-XChange]

Hello Carlo,

Are you printing through the PDF XChange printing drivers? Could you give us a sample file name?
Also - are there any particular settings that differ between the two types of machines - those that do save the .tmp files and those that do not?

Best,
Stefan

[cmarsura]

The temp files appears with whatever printer you use (MS XPS Printer, PDF XChange, Epson PX660, ...), I used the PDF XChange printer only to create the pdf files.
In the included temp.zip you can find three files:
- TEST2.pdf a PDF/A that causes creation of temp files;
- Windows Mail.pdf that is not a PDF/A file and does not cause creation of temp files;
- Windows Mail.mht the mht file I used to generate the pdf above;

After further investigation I found that temp files are created also in Vista and XP machines: the temp files are created if you select "Auto" for the 'Print text as curves' combo in the 'Advanced...' of PDF-XChange Viewer print dialog.
The printing of TEST2.pdf creates eight temp files that incidentally corresponds to the number of incorporated fonts in the pdf.

Carlo Marsura

[Lzcat - Tracker Supp]

Hi Carlo.
As you already see theese files contains embedded fonts used during printing. This is because there is no other way to pass embedded font to printer - we must create a file with a font and add it as a temporary font in the sytem. Unfortunately in most cases we cannot delete this file immediately after printing because someone may still use it, so we add this file to system list for files which will be deleted after reboot to finaly remove them.
Is this a very big problem? I'm not sure that we can find an absolutely correct solution when delete these files. All we can do is to remember a list of such files and try to delete them later, but again this may be not successful if someone else still is still using them (printer driver, for example).

[cmarsura]

Hi Lzcat.
Printing several PDF/A files containing many incorporated fonts may produce a somewhat bloated temp folder.
Trying to delete them at program exit may be a tentative.
I have seen that also Acrobat Reader creates temporary fonts but it delete them when the pdf is closed.

From my part I will try to produce and print non PDF/A files so to keep low the temp font creation rate.

Best
Carlo

[Paul - PDF-XChange]

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