Scribing head, and scribing apparatus and scribing method...

Details Scribing head, and scribing apparatus and scribing method... Scribing head, and scribing apparatus and scribing method...

2002-07-18

2010-10-26

Fulton, Christopher W (Department: 2841)

Geometrical instruments

Scriber

Reissue Patent

active

RE041853

ABSTRACT:
A scribing head1of this invention raises and lowers a scribing cutter by rotation of a servomotor3.As a scribe pressure, a rotational torque of the servomotor3is transmitted to the scribing cutter. To form a scribe line across another scribe line which is formed earlier, the scribe pressure is raised temporarily when the scribing head passes the scribe line which is formed earlier. The rotational torque of the servomotor3is controlled at any of preset limits while the position of a cutter6of the scribing head shifts on the brittle substrate. The servomotor3is driven under position-control mode.

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