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Analysis of Printed Paper via Micro-ATR Mapping

Published online by Cambridge University Press:  14 March 2018

Peter Troost
Affiliation:
Spectra-Tech, Inc., 2 Research Drive, Shelton, CT 06484
John W. Hellgeth
Affiliation:
SRN Company, LLC, 22 Arnoldale Road, West Hartford, CT 06119
David W. Schiering
Affiliation:
Spectra-Tech, Inc., 2 Research Drive, Shelton, CT 06484
Thomas J. Tague Jr.
Affiliation:
Spectra-Tech, Inc., 2 Research Drive, Shelton, CT 06484

Abstract

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The surface of printed paper has been examined through a fully automated attenuated total reflection (ATR) mapping technique. Automated z-axis control was utilized to bring the sample into contact with the ATR objective in a reproducible manner and an integrated mapping stage was used to position the sample. A force sensing device, the Contact Alert, was used to ensure optimal contact between the sample and internal reflection element Global manipulations of the resultant data revealed compositional differences attributed to the printed ink, carbonate and cellulose distributions. These differences were clearly evident in the infrared, but not discemable in the visible. The bulk filler Kaolinite was identified as a post processing contaminate as well as a trace mixture of Dioctyl Phthalate and an aromatic acrylate.

Type
Research Article
Copyright
Copyright © Microscopy Society of America 1998