I'm trying to print our my Designs but on the print its enlarged for example if Im printing a 6.5wide by 1.5 high picture it prints out bigger than the 8.5 x 11 sheet of paer PEASE HELP!
Printing problems on Mircosoft Windows are known. For printing, GIMP does use the printing API of GTK+ (the framework used for the GUI and other platform-dependent stuff), and this is known to be buggy on Windows.
What would be helpful is a few users who do have at least basic knowledge of and are interested in developing GTK+-based apps on Windows, and do want to have a look at the printing-related bugs in Bugzilla.
They = gimp = just don't get it!
After scanning a high quality album CD back cover in Windows XP-SP3, I used Gimp to fix a color and to put both the front cover and back cover in one picture. I realized that the 5.912(5)" width that correlated to the 2365 pixels @ 400 PPI or DPI would yield a 5.912" output. My printed version, however, was about 6.0625" via a 64 th inch metal ruler, so I used a ratio 6.0625" / 5.9125" * 400ppi and got 410ppi. 1.025% is the correction factor that worked for me. Then the height was too small, but it must be between 400 and 410. I got 403. My height in pixels is 3734 and 403 ppi not 400ppi works. 1.0075% is the correction factor for height.
correction factor Width = 1.025% * PPI in gimp to fix too BiG a print out correction factor Height = 1.0075% * PPI in gimp to fix too big a print out.
Select Image, Scale Image, Linear--I hope--and undo the lock link icon to select different PPI for X and Y. If these correction factors ain't linear then all bets are off, and gimp becomes imp. Once gimp is used for editing and saved all other photo tools will use the correct gimp values, which unless corrected are WrOnG!!
This process is a place to start to possibly fix your printing problems. It worked for me but on only 1 one test.
Lastly, for some reason Gimp refused to use my best quality print. I used a TIFF and printed it with another application (Alterna TIFF) Browser plugin. GIMP just became gimp! Perhaps imp is better still?
I print on XP with Gimp 2.6.11 to both a Xerox laser printer, a samsung laser printer, and an epson inkjet.
I have never had a scale issue.
I know my scanner does not produce 100% accurate scans - they are distorted in both directions (consistently) and I have to apply a scale factor, as stated by Ken. As far as I am concerned, this is an issue with the scanner/train software, not Gimp.
Additionally, I have found some of the cheaper train drivers (canon lide scanner, for example) do NOT accurately report the scan resolution, so If I scan as 1200spi or 300 dpi it ends up being the default (72 dpi) in gimp, and requires an image rescale to change the dpi as well as the smaller distortion corrections, or (as indicated by folks in this thread) the image will print out HUGE.
Select Print and then Image Settings. Check Ignore Page Margins box, insure paper size (Units), X: resolution / Y: resolution (Units) is correct as scanned or desired, and insure minimum margins (white space) for printer is met. I created a Custom Print profile for my HP printer. GIMP seems to do a better printing job than any of my limited photo tools. Lastly, sorry for the imp remark 1.5 yrs. ago.