Use of cutting tools for photographic manufacturing operations

Details Use of cutting tools for photographic manufacturing operations Use of cutting tools for photographic manufacturing operations

1997-09-16

1998-06-30

Rachuba, Maurina T.

Cutting

Processes

83684, 83690, 83948, B26D 100

Patent

active

057717648

ABSTRACT:
A method of cutting, slicing or perforating photographic imaging elements using certain cutting tools is disclosed. The cutting tool material includes zirconia and yttria at a molar ratio of yttria to zirconia from about 0.5:99.5 to about 5:95. The cutting tool is essentially a tetragonal crystal phase grain for the interior in a surface of cubic crystal phase grain or monoclinic crystal phase grain. This provides a hard, tough outer surface with a tough core. The cutting tool material can also be a composite of zirconia-alumina with or without surface modification.

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