Questioned Documents (page 2)
Scope of Work
A document examiner may also be requested to examine items
on a document to establish the manufacturing source, similarities
or differences, first production date, or date used (a most
difficult task). This is done by using chemical and/or physical
analysis. Items to be examined may include inks (writing,
printing, stamp pad, ink jet and typewriter), toners, pencil
marks, erasure residues, correction material, and paper.
Most of these tasks require the use of a good collection
of known standards to which to compare. Often a criminalist
is called to assist.
