How do I enlarge the screen size, on face time

on control screen o to copy ratio than choose the requested size,if you want to enlarge both the content and the paper size make sure to load big size paper.

enlarge it through windows control panel in the display section you can enlarge objects on the screen which also increases the word size or change the screen resolution

go to main menu find aspect ratio and adjust until you get what you want

This amazingly easy trick will instantly enlarge hard to see text on your screen!
Should you ever want to decrease the text, this trick in reverse will minimize text as well!
Spending lots of time online can cause eyestrain, especially if you encounter very small text. Don't squint or hunch over your screen! Squinting causes wrinkles!
Using these tips you can read screen text comfortably!
With the press of two keys, you can enlarge the screen text without going into your settings.
Simply press and hold down the "control" key, while pressing the "plus sign" key.
Be sure to keep the "control key" depressed while you press the "plus sign" key.
Each repetition will enlarge the text.
This can make reading small text SO much easier!
To return the text back to its original size (being polite to the next user), simply press, and hold down the "control" key and the "minus sign" key.
Each repetition will decrease the text size.
also
Create Menu tab right click in the top of screen (toolbar) you will see a number of toolbar options select the menu bar
this will add to your screen toolbar File Edit View Favorites Tools and Help select the view from the drop down list will be a Zoom with percentages %
and text sizes largest to smallest

Right click on the desktop, SCREEN RESOLUTION, lowering the resolution will increase the text size. You can also check VIEW on that menu and select large icons.

Text size is the inverse of screen resolution.

It can only enlarge smaller sizes ( like A5 ) to maximum size of A4.

Around the lcd panel is located reduce enlarge button, press one time for auto sizes or twice so that you can regulate in steps of 1%

tap twice with three fingers. It really works!

You need to expand your screen size with the buttons on the monitor, or increase your screen resolution, to a larger size, I think you need to adjust your monitor with the menu, +, -, buttons on monitor.

Making a Single Copy
1 Place the original face down in the ADF.
2 Press Copy/Help twice.
To cancel, press Stop.
Do NOT pull on the paper while copying is in progress.
Copy Options: Single or Multiple Copies,
Reduce/Enlarge, Sort/Stack
You can choose additional copy options. First, you can select the number of copies. Next, you can
choose whether multiple copies will be STACKED (all copies of page 1, then all copies of page 2, etc.)
or SORTED (collated). Finally, you can choose an enlargement or reduction ratio. To automatically
reduce the copy to the paper size you have set for the paper tray, select AUTO. To reduce the copy by
a fixed percentage, choose 93%, 87%, 75% or 50%. Or, to enlarge the copy, select 150%, 125% or
120%. To copy a document at its original size, select 100%.
1 Place the original face down in the ADF.
2 Press Copy/Help.
3 Enter the number of copies you want (1-99).
For example: Press 9 for nine copies.
To start copying now, press Copy/Help.
If you would like to select additional copy options, like
SORT, ENLARGE or REDUCE, press Menu/Set.

The only option I see that comes close to this is the "fit to page" option described on page 35 in the manual. Apparently, it detects the size of the original and enlarges it to fit on the paper size selected. Otherwise, I see no options for enlarging or reducing while copying.