N.Y. UCC Law § 3-403

Section 3--403. Signature by Authorized Representative.\n (1) A signature may be made by an agent or other representative, and\nhis authority to make it may be established as in other cases of\nrepresentation. No particular form of appointment is necessary to\nestablish such authority.\n (2) An authorized representative who signs his own name to an\ninstrument\n (a) is personally obligated if the instrument neither names the\n person represented nor shows that the representative signed\n in a representative capacity;\n (b) except as otherwise established between the immediate\n parties, is personally obligated if the instrument names the\n person represented but does not show that the representative\n signed in a representative capacity, or if the instrument\n does not name the person represented but does show that the\n representative signed in a representative capacity.\n (3) Except as otherwise established the name of an organization\npreceded or followed by the name and office of an authorized individual\nis a signature made in a representative capacity.\n