In Japan, there is no unified invoice supervised by the tax authorities like China, and most of them provide receipts. Moreover, the receipt format of each business place is not fixed, and this kind of receipt can be bought in general hundred-dollar stores. Of course, if you want to use a receipt for reimbursement, you can ask them to issue a more formal receipt (called receipt in Japanese). Generally, the receipt will be stamped by the payee or unit, and this voucher can be reimbursed by China Company.