THE LEADING ELECTROSTATIC IMAGING SYSTEM FOR DETECTING INDENTED WRITING
ESDA is the leading technology for detecting indented writing on questioned documents.
ESDA works by creating an electrostatic image of indented writing, which is then visualised by the application of charge sensitive toners. The sensitive imaging process reacts to sites of microscopic damages to fibres at the surface of a document, which have been created by abrasive interaction with overlying surfaces during the act of handwriting.
ESDA 2 features:
Creation of permanent records
Repeatable without loss of information
Effective on old documents
A3-sized document bed
Original cascade development method
Improved toner pad development
Optional aerosol hood for ‘powder cloud’ development
Replaceable vacuum bed