HP Color LaserJet CM2320 Serie Referenzhandbuch Seite 6

4 Remove the copied page from the output bin and place it face
down into the priority input tray with the top edge feeding into
the device first.
Press
5 Start Copy Black
6 Remove the copied page from the output bin, and then set it
aside for manual collating.
7 Repeat steps  through 6, following the original document
page order, until all pages of the original are copied.
or
Start Copy Color.