Nozzle - Opal film
- One-set resin
- One-shot
- One-shot binding
- One-shot book
- One-shot hotmelt
- One-side print
- One-side printer
- One-side printing
- One-sided original
- One-solution processing
- One-stage resin
- One-stop exposure
- One-to-one copier
- One-to-One-Communication
- One-up
- One-up book
- One-up feeding
- One-volume book
- Oneshot
- Onion-skin
