[Digikam-devel] [Bug 150009] large print is sent to printer but is taking hours to print - when opening with gimp->print then no problems

[Joerg Kuehne]

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http://bugs.kde.org/show_bug.cgi?id=150009         




------- Additional Comments From joerg.kuehne lycos de  2007-09-20 14:21 -------
Hi,

I think it is a problem of print resolution. I have an Epson RX600. The ppd-file shows an resolution of 1440x1440dpi for photo quality. KDEPrint produces postscript level 1 files, which include the raw image data. An A4 page with 1440x1440dpi 24Bit color results in a ps file of size 600MByte !! CUPS invokes ps2ps, which takes a VERY LONG time to process this file.

OpenOffice can only print an A4 page in photo quality if I check the "Reduce Bitmaps" in the printer settings, otherwise it will be killed due to out of memory during preparation of the ps file. Maybe it tries to scale the images to the selected printer resolution.

A reasonable would be an option to the digikam/printwizard dialog to set a custom resolution. This would solve also the issue that printing to ps file is done with screen resolution which is useless for photos.
There were other issues of printing with low resolution. It seems that KPrinter uses screen resolution as fallback if it can not gather the value from the ppd-file and some ppd-files of some drivers may be "buggy". Here a custom resolution would solve that too.


Jörg