IDENTIFICATION OF IBM KEYPUNCH MACHINES BY THEIR PRINTED PRODUCTS

• NCJ Number: 36954
• Journal: Journal of Forensic Sciences Volume: 21 Issue: 4 Dated: (OCTOBER 1976) Pages: 949-958
• Author(s): C E CURVEY; C E EATON
• Date Published: 1976
• Length: 10 pages
• Corporate Author: American Soc for Testing and Materials
• Publication Format: Article
• Language: English
• Country: United States of America

Annotation

IBM (INTERNATIONAL BUSINESS MACHINES) KEYPUNCH MACHINES CAN BE IDENTIFIED INDIVIDUALLY BY THE DISTINGUISHING CHARACTERISTICS OF THE SYMBOLS PRINT ON THE PUNCH CARDS.

Abstract

THE MISALIGNMENT OF TINY WIRES USED IN THE PRINTING PROCESS FACILITATES THE IDENTIFICATION.