If your printer is not printing the entire image on the page, there are a few things you may need to check:
Verify the source of the image. Is it a scanned image, digital image, download, or email attachment?
Check the file size and resolution. Printable images need to have a resolution of at least 300dpi and be sized accurately to output dimensions for best results.
Be sure printer settings are configured correctly. If you change to the right page size, either landscape or portrait mode, and make any other necessary changes.
Verify that you have the correct software and printer driver installed.