The identification can sometimes be based on individual characteristics that develop during the manufacturing process and through use and abuse of the typewriter. However, these elements and carbon film or correction ribbons can sometimes be associated with specific texts by examining individual characteristics of the elements and by correlating the text and ribbons. Carbon film typewriter ribbons can sometimes be read for content or specific wording of questioned material. Carbon film ribbons can sometimes be identified with questioned typewritten impressions. Fabric ribbons cannot be read.
Paper is composed of numerous fibers.
The randomness of the paper fibers is an identifying characteristic that makes fiber designs unique to a paper sample. The transfer of fiber designs can link a typewriter ribbon to typed text, which enables examiners to positively link a ribbon to text on a document. If the typewriter has a carbon film ribbon, remove it from the typewriter and submit it to the Laboratory. Also submit the correction tape. Insert a new ribbon in the typewriter prior to obtaining exemplars.