Hi BrownieAndie, does it seem that Firefox is confused about your paper size, it only used a small section of the page and leaves the rest blank?

I'm going to recycle this earlier post. Please let me know if it helps:

For paper size problems:

If Firefox is not using the whole sheet of paper, or otherwise misunderstands what is contained in your printer's paper tray(s), that can be caused by Firefox having extracted the wrong paper size settings from Windows when reading the print driver data. Clearing it involve some heavy clicking:

(1) In a new tab, type or paste about:config in the address bar and press Enter. Click the button promising to be careful.

(2) In the search box above the list, type or paste print and pause while the list is filtered

(3) For each setting that specifically mentions the problem printer, right-click and Reset it. The fastest way is to right-click with the mouse and then press the r key on the keyboard with your other hand.

Here's a possible shortcut: In a couple threads involving printouts that used a small portion of the page (on Brother printers), the preference printer_printer_name.print_paper_data was set to 256 and when the user edited it to 1 that -- all by itself -- fixed the paper size problem. If you use a Brother printer and see something other than 1 there, you can edit the value by doubling-clicking it or using right-click>Modify to see whether 1 is the number you need.

Note: If you use A4 size paper instead of letter size, try a printer_paper_data value of 9 and see whether that works.

Thank you! Printing properly now!

Actually now it is printing full pages but the print is too big & each one page is needing 2 pages to print.... can you help me with this also?

BrownieAndie said

Actually now it is printing full pages but the print is too big & each one page is needing 2 pages to print....

I'm not sure I can picture that. Is Firefox splitting the page horizontally (like Excel)?

If you check the scaling in Print Preview or Page Setup, is it on "Shrink to Fit"? Those can be directly accessed from the File menu (tap Alt to show the menu bar if you normally keep it hidden).