Ohio Code § 1303.42

§ 1303.42.

(A) If a person acting, or purporting to act, as a representative signs an instrument

by signing either the name of the represented person or the name of the signer, the

represented person is bound by the signature to the same extent the represented person

would be bound if the signature were on a simple contract.  If the represented person is so bound, the signature of the representative is the

“authorized signature of the represented person” and the represented person is liable

on the instrument, whether or not identified in the instrument. (B) If a representative signs the name of the representative to an instrument and the

signature is an authorized signature of the represented person under division (A)

of this section, all of the following rules apply: (1) If the form of the signature shows unambiguously that the signature is made on behalf

of the represented person who is identified in the instrument, the representative

is not liable on the instrument. (2) Subject to division (C) of this section, if the form of the signature does not show

unambiguously that the signature is made in a representative capacity or if the represented

person is not identified in the instrument, the representative is liable on the instrument

to a holder in due course that took the instrument without notice that the representative

was not intended to be liable on the instrument.  With respect to any other person, the representative is liable on the instrument

unless the representative proves that the original parties did not intend the representative

to be liable on the instrument. (C) If a representative signs the name of the representative as drawer of a check without

indication of the representative status and the check is payable from an account of

the represented person who is identified on the check, the signer is not liable on

the check if the signature is an authorized signature of the represented person.