Scientific Examination of Questioned Documents

accurate actually appear attorney authentic ball point pen carbon paper characteristics Charred Documents check writer chemical color combination common comparison comparison microscope condition contain court Crim decipher decipherment defects developed discussed disguise disputed document docu document examiner document examiner's document problems dye inks enlarged erased erasure establish evidence executed exhibit factors facts Figure film fingerprints Forensic Chemistry forgery fraudulent genuine signature hand handlettering handwriting identification important impressions individual INFRARED PHOTOGRAPHY ink stroke investigation Jour known letter forms light machine manufacture marked material ment methods microscopic negative offset printing opinion original pen lifts pen pressure pencil person photographic photostat plate portion prepared printing questioned document questioned document examination qwertyuiopasdfghjklzxcvbnm QWERTYUIOPASDFGHJKLZXCVBNM reproduction request standards reveal ribbon sheet specimens spirit duplicator suspected technique testimony tintometer tion traces trial type faces typewriting typewritten ultraviolet variation witness writing habits writing inks writing instrument written