A corporation filing Form 1120 can pay its balance due using a variety of electronic methods, but it cannot pay the balance due by check. Thus, Form 1120 does not have a payment voucher.
When marking the return for electronic filing, you'll have the option to enter bank information for payment by direct debit.
If the corporate officer doesn't want to include payment information with the return, the corporation can pay online at the Electronic Federal Tax Payment System® website at the U.S. Department of the Treasury:
An alternative to EFTPS is to use the "Same-day wire payment option" through the Federal Tax Collection Service (FTCS). This payment method involves the corporation's bank sending a wire transfer, so additional fees are likely involved. See here for more information.