Sometimes you may need to print a document in “negative” format. This means that everything will print in reverse order: black will print as white, and white areas as black. This is especially useful if you are editing your output with a camera.
In other cases, you may need to print a mirror image of the output, which is useful if you are creating output for photo transfer processes or screen printing. There are several ways to create negative output, and they all involve the printer driver.