Lithographic Plate Surface Inspection Using Fiber Optics

Dennis H. Locke

doi:10.1117/12.954384

20 October 1975 Lithographic Plate Surface Inspection Using Fiber Optics

Dennis H. Locke

Proceedings Volume 0060, Solving Quality Control and Reliability Problems with Optics; (1975) https://doi.org/10.1117/12.954384
Event: Solving Quality Control and Reliability Problems with Optics, 1975, San Diego, United States

Abstract

Zinc plates used in the lithographic industry must be free from scratches and meet a stringent specification on surface finish (scratches under .002 inches wide and surface variations in the range of 400 ± 20 grit). Mechanical Technology Incorporated has developed an automated industrial machine for inspection of these zinc plates as part of the on-line processing system for a zinc plate manufacture. This paper describes the application briefly and the inspection system in detail. The inspection system uses a non-contacting fiber optic system, optical-to-electronic conversion and signal processing electronics.

Citation Download Citation

Dennis H. Locke "Lithographic Plate Surface Inspection Using Fiber Optics", Proc. SPIE 0060, Solving Quality Control and Reliability Problems with Optics, (20 October 1975); https://doi.org/10.1117/12.954384

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