Good morning,
The size is limited by the resources available to Qimage from your system.
You can check the resources by going to HELP and holding the SHIFT key while you click on Analyze Current settings.
That will give you a clue to what is available to Qimage.
Rule of thumb; a file size about half of the reported number will load.

Fred

Hi Olga,
The next move is to RUN MSCONFIG and uncheck programs that are loading and running when you boot the computer.
This does not cause any problems. Anything you uncheck still  runs when called upon. Examples might be Adobe, Nero, Flashpipe, etc.
You might gain some extra that way.
The real improvement will have to come from some of the folks on here that are really good with Windows' switches, and reallocating memory.
I'm not knowledgeable enough to advise in that department.

Just to satisfy my curiosity and others that read these posts, and learn from them, how do you create a 2 gigabyte image file?
Thanks,
Fred

Thanks, Mike. That explains.
I have 64-bit OS Windows 7. You state that QImage is "Fully supported on all Windows versions from Windows XP through Windows 7 x64". Do you have x64 version of QImage?

Fred, my images are computer generated. High resolution is my requirement plus I want to print 19''x16'' output. It gives me 
more than 2GB.

Thank you both. I hope I can solve my problem by using QImage.
Olga

Olga,
The way to do this is to use a smaller image (pixel size) and let Qimage do the interpolation. That's what it does and better than anything else you may be using.
19x16 is not exactly a large print size as far as Qimage is concerned. Other users print banners several times longer than that using Qimage. 
Read this item here http://ddisoftware.com/tech/articles/march-2010-smart-photo-printing/
Terry

Hi Olga,

Most folk here are into taking relatively small image files (photography) and having to up-res them to get a decent print. It seems you have high res digital computer generated images and need to downsize them. I would suggest you do that in whatever software you use to generate the image. You will not see the detail in a 19 by 16 print that you will see by scrolling round the whole image on your screen. For a 19 by 16 photo, at normal viewing distance, a print resolution of 300dpi or so will do for most photos. If you are using high quality media, and viewing with a magnifying glass, then you may want more dpi, but there is no point in feeding high resolution image detail to a relatively low resolution printer. This means, of course you will have your large original image file, and a separate smaller file just for printing. Probably any of the basic resizing algorithm's (bicubic or whatever) will do for downsizing, depending on the type of image you have generated, and final resolution you aim for.

Now whether it is better to downsize to give exactly 720 dpi (for an epson printer), so that qimage needs to apply none of its resizing, or downsizing to some other size and let qi do the final resizing, is something for you to try for yourself. qi has a test strip print facility, so you needn't waste paper printing the whole image.

If your original image is a multi-layered tiff, for example, then you could try flattening it, saving as 8 bit/whatever.

hth,

Best wishes,

Ray