A "null printer" is a fake printer that can be used to avoid printing unneeded tickets.

This is useful if you need to use the Autocompostage - Auto-check - Auto-control interface, because it needs a ticket.

Setup a Null Printer

Ref: https://www.brull.me/e-mds/2014/10/28/create-a-windows-null-printer.html

• create an Institution → Tools → Hardware Family: "No printing" of type "Printer"
• manually create in windows, on each workstation, a local printer with a new local port named "nul:", driver type Generic / Text only, logical name "Null Printer" (don't share it)
  
  
  
  
  
• create a document printer on each workstation to reference the "Null Printer"
  
• assign it to the hardware family
• create an Organization → Tools → Ticket Model for the printer family "No printing"
  • add an only model variant of type "A4 ticket" (use any model)
• assign this template to any product that you don't want to print (but still want a ticket in the DB)