On-demand printing is digital printing. This eliminates the need for so-called large-scale printing equipment and enables printing with digital data only. Since you can print as few copies as dozens of copies, you can handle a small number of printed items instead of receiving from hundreds of copies as in the past.
In the first place, on demand on demand is English to meet the demand. So, on-demand printing refers to printing on demand.
A word I hear recently, there is on-demand broadcasting, which also means that you can choose what you want to see. Because it is on demand, you will be able to print as many as you need depending on your order.