The signatories and notaries public to all deeds, mortgages, transfers, assignments, and discharges of mortgages, leases, rental agreements, rescissions or assignments thereof, and contracts for the sale of land shall have their names typed or printed immediately beneath or adjacent to their signatures. Failure to comply herewith shall not affect the validity of any such instrument, but the recording fee for the instrument shall be increased by two dollars ($2.00).