Print Size Not Always The Same As Indicated

After using Paint.Net for years and trying some other programs I finally decided to try Gimp and although I was concerned about a steep learning curve, my graphics skills/knowledge are pretty limited, I love Gimp. The main usage is for editing & printing CD/DVD cover art and getting the prints to print at the correct size is sometimes more a miracle than I would have imagined. Gimp works really well for me most of the time but occasionally the size is about 1/2 what is shown in "Print Size". The last time before today when I closed the program and reopened it the print came out correctly sized so I'm wondering if this is a bug or something that I'm doing wrong.

TIA

I'm not sure if this would be a problem with your printer settings, or with the image size settings in GIMP itself.

Try working in actual sizes once... and try changing your scale settings in your printer properties once.

One or the other should produce a desirable result.

Thanks for replying. I tried closing and reopening Gimp like the previous time and no problem, I think perhaps there is a bug in the program. Not a big deal since it is an easy fix and all in all I much prefer Gimp to the other programs that In have used.

I guess it's possible, considering the varying amounts of system setups, including printers and such.

Still... I'm glad it doesn't bother you too much.

I would love to know if/when you get it fixed, how you managed it.

I had the same problem with the image printing smaller than the print size settings.
I eventually found that the margins in the page set up were set such that they would not allow full size printing. Rather than warning of this fact, the program prints the image small.
I set all the margins to zero and obtained a full size print.

Thanks for the reply shacker. As the problem would manifest intermittently and restarting Gimp would usually fix it I don't believe it is related to the margins. I no longer use Gimp for printing just for editing and print from XnView which gives me correctly sized images.

Ooops! I thought this had cured it, but I find that in addition to setting the margins, I have to save the file before printing.
Thank you for your reply, but this may help someone else who is experiencing similar problems.