Browse Prior Art Database

Scribe Point

IP.com Disclosure Number: IPCOM000090561D
Original Publication Date: 1969-May-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Rose, MF: AUTHOR

Abstract

In the generation of printed and integrated circuit artwork, the design is first produced in enlarged form and subsequently reduced by photographic processes to the specified size for etching. Computer 1 is programmed and operates through controller 3 to drive X-Y plotter 5 to which cutting tool 7, having a circular cutting point, is attached. Artwork is reproduced by cutting a double-layer strippable material 9 one layer deep in the image of the prescribed pattern and stripping the unnecessary material, leaving the design of the final circuit to be reduced and etched. Previously, numerically controlled cutting was limited to straight up or down, or oblique angles, the direction of the cut being limited by the permissible degree of rotation of the cutting edge of the knife.

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Scribe Point

In the generation of printed and integrated circuit artwork, the design is first produced in enlarged form and subsequently reduced by photographic processes to the specified size for etching. Computer 1 is programmed and operates through controller 3 to drive X-Y plotter 5 to which cutting tool 7, having a circular cutting point, is attached. Artwork is reproduced by cutting a double-layer strippable material 9 one layer deep in the image of the prescribed pattern and stripping the unnecessary material, leaving the design of the final circuit to be reduced and etched. Previously, numerically controlled cutting was limited to straight up or down, or oblique angles, the direction of the cut being limited by the permissible degree of rotation of the cutting edge of the knife. Omnidirectional cutting tool 7 comprises a circular tungsten carbide cutting edge 11 which is positioned through an opening in such cutting tool and held in position in the shank. The cutting tool can be made as a single piece structure. The depth of cutting is controlled by shoulder 13, while the use of a tungsten carbide tip provides a sharp cutting edge. By providing an omnidirectional cutting capability, the cutting tool arrangement simplifies the programming of the system, requires less time to prepare data to operate the automatic plotter and less computer time to run the program.

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