Development of an optical system for analysis of the ink---paper interaction

  • Authors:

  • António Oliveira Mendes;Paulo Torrão Fiadeiro;Ana Maria Ramos;Sónia Cristina Sousa

  • Affiliations:

  • Textile and Paper Materials Unit and Optical Center, University of Beira Interior, Covilhã, Portugal 6201-001;Remote Sensing Unit, Department of Physics and Optical Center, University of Beira Interior, Covilhã, Portugal 6201-001;Textile and Paper Materials Unit, Department of Chemistry, University of Beira Interior, Covilhã, Portugal 6201-001;Textile and Paper Materials Unit, Department of Chemistry, University of Beira Interior, Covilhã, Portugal 6201-001

  • Venue:
  • Machine Vision and Applications
  • Year:
  • 2013

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Abstract

In this work is presented and described an optical system specifically designed and implemented to be applied for the study of the ink---paper interaction at the paper surface, considering the two main directions of the paper sheet (machine and cross directions). This work is particularly concerned with the system description, complete characterization, test, and its usage under real conditions. Concerning the system characterization, the main parameters were addressed and set having in mind its optimization. Relatively to the test of the system, several measurements using specific object samples with known dimensions were carried out to evaluate the accuracy of the obtained results. In terms of its usage under real conditions, an experiment was carried out using a commercial ink and common copy paper to dynamically collect data of its interaction. The collected data, after processing, enabled the determination of the main results of the analyzed ink---paper interaction, which allowed to reach the following conclusions; (1) the implemented system offers two different analysis approaches (qualitative and quantitative), both showing to be in agreement; and (2) the system also shows to be important to identify variations of the ink---paper interaction, manifested in the machine and cross directions of the paper.