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Browse Prior Art Database

Defect Repair Station

IP.com Disclosure Number: IPCOM000042450D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Deighton, GA: AUTHOR [+3]

Abstract

There is shown and described an automatic defect repair station for artwork masters which is also applicable to composites, circuit cards and boards. The repair station disclosed handles two types of defects, opaque in clear areas and clear spots in opaque areas. Referring now to the figure, workpiece 2 is placed on x-y table 4. Light from lamp 6 passing through lens 8 illuminates the defect in workpiece 2. A beam from the laser passes through lenses 10 and 12 and one-way filter 14. A conventional optical system is also provided. When it is desired to remove unwanted opaque material from clear areas, the x-y table is moved until the defect is centered under the cross hairs in the optical system for viewing by means of the video system. The laser is fired to evaporate the unwanted opaque.

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Defect Repair Station

There is shown and described an automatic defect repair station for artwork masters which is also applicable to composites, circuit cards and boards. The repair station disclosed handles two types of defects, opaque in clear areas and clear spots in opaque areas. Referring now to the figure, workpiece 2 is placed on x-y table 4. Light from lamp 6 passing through lens 8 illuminates the defect in workpiece 2. A beam from the laser passes through lenses 10 and 12 and one- way filter 14. A conventional optical system is also provided. When it is desired to remove unwanted opaque material from clear areas, the x-y table is moved until the defect is centered under the cross hairs in the optical system for viewing by means of the video system. The laser is fired to evaporate the unwanted opaque. For repairing unwanted clear spots the defect is located under the cross hairs of the optical system. Opaque dispenser 20 is actuated to place the opaque material where desired. In either case, the workpiece is moved and the process repeated until all defects have been corrected. Many advantages accrue from the use of such an automated repair station including a substantial decrease in the time required to accomplish touchups. There is a decrease in accidental defects resulting from improper handling, and operator fatigue is reduced. Throughput is increased, and optimal use and storage of materials occur.

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