You need to ask the tax bureau where there should be a special place to print invoices.

How many copies do you need to make your own invoice format? Generally, there will be invoice, bookkeeping, shipping and foreign exchange administration (for verification). Put in the content required by the customer, and then customize the invoice. There should be some common formats in places where invoices are specially printed. You can also learn from them or make some changes! Then buy a stylus printer and you can print.