Industry: using decision tree induction to minimize process delays in the printing industry

  • Authors:
  • Robert B. Evans;Douglas Fisher

  • Affiliations:
  • Continuous Improvement Manager and Six Sigma Master Black Belt, R. R. Donnelley and Sons, Gallatin, Tennessee;Associate Professor of Computer Science, Vanderbilt University, Nashville, Tennessee

  • Venue:
  • Handbook of data mining and knowledge discovery
  • Year:
  • 2002

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Abstract

Rotogravure printing involves rotating a chrome-plated, engraved copper cylinder in a bath of ink, scraping off the excess ink, and pressing a continuous supply of paper against the engraved cylinder with a rubber roller, thus transferring ink from the engraved image of the cylinder to the paper. The printing process is subject to many types of delays, one of which is cylinder banding. During the course of printing, grooves may become engraved into a cylinder surface. These grooves cause streaks or bands to be printed on the paper, thus ruining the final product. This article describes the application of decision tree induction to identify the conditions under which banding did and did not occur at the Gallatin, Tennessee plant of R. R. Donnelley and Sons, Once found, discovered rules were used to bias printing press parameters toward conditions identified as favorable. This approach has been primarily responsible for reducing bands from 538 in 1989 to 26 in 1998. This article describes the technical and social issues addressed in the banding application.