Computer Room Thread, Print in Mirror Image Mode

Hello
I am experimenting with iron on transfers.
The instructions say print in Mirror Image Mode
Cannot find this option on either of my 2 Printers
Have an old HP 895CXI and a HP 1200 all in one
Can anybody help please?

Grumps

I did some a few years ago and my method was to flip them horizontally in an imaging program like Gimp, or even win Paint.

Thanks
So you do it to the file before you print it
Tried that and works fine.

The problem was the program said " Print in Mirror Image Mode" and that's what I could not find