The content of any admissible writing made in the regular course of “a business” as defined by Kan. Stat. Ann. § 60-459, and amendments thereto, or in the regular course of duty of any “public official” as defined by Kan. Stat. Ann. § 60-459, and amendments thereto, may be proved by a nonerasable optical image reproduction provided that additions, deletions or changes to the original document are not permitted by the technology, or a photostatic, microfilm, microcard, miniature photographic or other photographic copy or reproduction or by an enlargement thereof, when duly authenticated, if it was in the regular course of such business or official activity to make and preserve such copies or reproductions as a part of the records of such business or office. The introduction of such copy, reproduction or enlargement does not preclude admission of the original writing if it is still in existence.