Ohio Rev. Code § 9.11
Any elected or appointed public official of this state or of any political subdivision or instrumentality thereof, or any member, agent, or employee of any board, commission, bureau, or other public body established by law, who is permitted or required in the performance of his duties to affix his signature on any check, draft, warrant, voucher, or other instrument for the payment of money, may adopt a facsimile thereof, in lieu of such manual signature, and affix such facsimile to any such instrument. Notice of the adoption of any such facsimile shall be given in writing to the depository from which funds are to be withdrawn, which notice shall include a description of the device to be used and a specimen of such facsimile signature. Prior to use of such facsimile, the written approval of such depository must be obtained.
R.C. §9.11