Browse Prior Art Database

AUTOMATED PAPER DEFECT DETECTOR

IP.com Disclosure Number: IPCOM000027000D
Original Publication Date: 1994-Dec-31
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 67K

Publishing Venue

Xerox Disclosure Journal

Abstract

Converting related defects in paper account for about 60 to 70 percent of all complaints by paper customers. Manual inspection of finished reams is a laborious task which is prone to human error. This manual inspection process can be replaced with an automated process in which individual sheets of paper from a sample ream are fed through a high speed xerographic engine that has been internally retrofitted with a high speed video camera and related software. The sheets are scanned for converting related defects and data are acquired and processed by computer.

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XEROX DISCLOSURE JOURNAL

AUTOMATED PAPER DEFECT Proposed Classification DETECTOR U.S. C1.073/159
John M. Viavattine
5/04 Int. David H. Rockwood C1. GO11

Converting related defects in paper account for about 60 to 70 percent of all complaints by paper customers. Manual inspection of finished reams is a laborious task which is prone to human error. This manual inspection process can be replaced with an automated process in which individual sheets of paper from a sample ream are fed through a high speed xerographic engine that has been internally retrofitted with a high speed video camera and related software. The sheets are scanned for converting related defects and data are acquired and processed by computer.

For example, the internal workings of a Xerox@ 5090 copier can be removed except for the pa er transport system. Two high speed video cameras, such as

through the paper transport system they are scanned for converting de ects such as wrinkles and the like, dirt content, slitter and knife cut quality, and dimensions. The images thus obtained are electronically communicated to a computer (such as a Sun@ workstation running Iysis defect analysis software, for example) and compared to standards. When a defective sheet is noted, the information is stored in memory for future analysis and the defective sheet is diverted through the duplex path of the paper transport system to a storage bin, where it can be collected by the operator for confirmation of the defect.

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