Raffle tickets are most commonly printed on digital or litho printing presses. This allows the production of millions of tickets to be printed in a relative short amount of time to cope with demand.
The unique numbering on raffle tickets can be printed in 2 ways. The first is to print the copies of the raffle ticket without the numbering on. This allows for a fast print process as you are printing copies of a single page and is usually done on a litho press. Then during the perforation process the number can be printed afterwards.
The second way is to print the number at the same time as the ticket using imposition. With digital printing presses this is now the most common way, especially for shorter runs. This way also ensures that duplicated numbers can not be printed.