705 ILCS 105/8

The clerks shall, in all cases, attend in person to the duties of their offices, respectively, when it is practicable so to do, and shall perform all the duties thereof which can reasonably be performed by one person. In the performance of the duties of the office of clerk of the circuit court, any such clerk, after filing with the Secretary of State his or her manual signature certified by him or her under oath, may execute or cause to be executed with a facsimile signature, in lieu of his or her original signature, all forms of process and notices issued by his or her office. "Facsimile signature" means a reproduction by engraving, imprinting, stamping, or other means of the manual signature of an authorized officer. When the seal of the clerk of the circuit court is required in the execution of any process or notice issued by the clerk's office, the clerk may cause the seal to be printed, engraved, stamped or otherwise placed in facsimile thereon. The facsimile seal has the same effect as the impression of the seal. (Source: P.A. 83-346.)