Ron,
IBM (and clones) have character mapped screens, the Amiga has a bit
mapped screen. The IBM stores the character and it's screen handler grabs
that character's bit representatin and displays it on screen. To print the
screen…all you have to do is print the character.
On the Amiga, there is no stored character, just the bits on the
screen as determined by whatever font you are using.
IF you wanted to do the equivalent on the Amiga, you'd have to lay
out a section of memory as if it were the screen and store the characters
there. That would require you keep both the 'character screen' and the real
screen and would require custom code to handle the Amiga's text functions.
That character screen would have to have it's own scrolling routines,
clearing routines, 'cursor' handling routines, etc. You'd then have to have
a print routine that basicaly copied that character screen to your printer,
line by line. That'd be a fair amount of custom code.