Re: Help wanted - Duplex printing

Rob,


On 28/08/2026 00:08, Rob Cliffe via Python-list wrote:
> I have a Windows 11 laptop and an Epson WF-4820 printer.
> Is there any way I can programmatically print two files, one on each 
> side of the same sheet of paper?
> The following program doesn't quite work (Python 3.13.3):

How long are these files?

In the ?good, old, days (before duplex printers became available/cheap) 
we would print the even-numbered pages on the 'bottom' of each sheet 
with page-numbering forwards, take the output stack and (carefully 
oriented) place it back in the input cartridge; then print the 'odd' 
pages on the 'top' of each sheet.

In your case, print the shorter file, over-turn, and print the other.

However...
if any page is messed-up for some reason, eg two sheets fail to 
separate; things become confusing very quickly. So, learned to use this 
trick in short-runs.

OTOH much more fun to find a programmatic solution!
-- 
Regards,
=dn