Ohio Rev. Code § 5301.32
A mortgage may be assigned or partially released by a separate instrument of assignment or partial release, acknowledged as provided by section 5301.01 of the Revised Code. The separate instrument of assignment or partial release shall be recorded in the county recorder's official records. The county recorder shall be entitled to charge the fee for that recording as provided by section 317.32 of the Revised Code for recording deeds. The signature of a person on the assignment or partial release may be a facsimile of that person's signature. A facsimile of a signature on an assignment or partial release is equivalent to and constitutes the written signature of the person for all requirements regarding mortgage assignments or partial releases.
In a county in which the county recorder has determined to use the microfilm process as provided by section 9.01 of the Revised Code, the county recorder may require that all assignments and partial releases of mortgages be by separate instruments. The original instrument bearing the proper endorsement may be used as the separate instrument.
An assignment of a mortgage shall contain the then current mailing address of the assignee.
R.C. § 5301.32