Changing font size on Cannon Mx452 all in one printer

You need to read the printer manual. If it is a basic or old printer it probably won't have the ability to change the size of the font.

It is possible you will have to save the page on your computer and edit it there before printing.

Assuming you're referring to the print size of the fonts - letters ..... or the size of the printed page ...
If you're printing from your computer, you'll need to change the size of the font (to a larger font size) on your document before you print, or adjust the print Properties ... to fit to page, or magnify the size of a small document ...
If you're printing a pdf file, you can specify the size of the document using the enlarge (%) before you send it to the printer

Aside from changing the size, printing as big or small and using symbols, the LetraTAG does not offer various fonts. This model is pretty basic and has the one font and that is all.

The manual can be found at this location:

http://www.dymo.com/media/UserGuides/QX50US.pdf

check if the setting FORMAT CONVERT is with some numbers, please change for NONE.
This seting change the resolution from Printhead 200dpi or 300dpi or 150 dpi or none, none mins, if you have 200dpi printhead, print 200dpi resolution(small fonts). if have 300 dpi, print with 300 dpi resolution, if have 300 dpi(very small fonts) printhead, can print 150dpi(big fonts) if change this setting.
if ok, check the driver or your software.

Please check the following steps:

1. Check the printer page setup
2. try to print some test pages by jumbled fonts sizes
3. try to re-boot the printer

**If this works please rate else let me know in case of further help.**

If you are trying to print emails directly, you must change font size in Internet Explorer options for font size which controls email print size in Outlook Express. You may copy to a Word doc to control fonts there.

Change the font in the application that you are using.

The problem may be that the printer's resident fonts does not include the font you are calling. So the printer's logic says, "Go find the best font you can." The font search gives you the wrong font.

If your printer allows you to print out the fonts, do that and make sure the font you want is in the list.

If it is not, then you will have to use a "Soft font" and make sure that your application knows to download/include soft fonts to the printer

Don

RE INSTALL YOUR DRIVER FOR YOUR PRINTER . IT WILL HELP YOU ..

Some fonts might not be available to use in the printer, make certain it's a true-type font you are using in your document.

Fonts and font sizes are managed within the program you are using, the actual font files, and your operating system (typically Windows). This is especially true with some languages on the internet - you will need Language Packs from the program manufacturer to successfully display the characters of some languages.
If the printer works with other fonts and other programs just fine, but is having a problem with one specific font or program, then you will need to contact the manufacturer of the font (Or Microsoft, if it is a font that came with Windows), or the program manufacturer, for more assistance. The printer only prints what is sent to it, if other programs work fine, then the printer, its driver, and the related hardware are fine. Any printer does also not include fonts in the installation of the printer driver, so reinstalling the printer driver will not replace or solve font problems. If the printer is not working from multiple programs, let us know so we can troubleshoot this issue. Otherwise, you will need to contact your program manufacturer for information on how to manage fonts or the manufacturer of your specific font.