| 摘要 |
A pen for use in a graphics plotter employing a turret head with optical scanning of the pens. The upper portion of a cylindrical pen body having a centrally located guide ridge for positioning the pen in the gripping arms is provided with a retaining ridge, a support ridge, and a stop shoulder over which a sleeve is removably snap fit. The sleeve is provided with a reflective tape outer surface heat-bonded to the sleeve.
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