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Modification of the Photoplotter Aperture Shutter

IP.com Disclosure Number: IPCOM000120007D
Original Publication Date: 1991-Mar-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 27K

Publishing Venue

IBM

Related People

Doxsey, WI: AUTHOR [+6]

Abstract

In previous applications, the aperture shutter on the photoplotter that was being used did not open and close very often during a plotting cycle. New requirements dictated that the shutter be used more than 2000 times during each plotting cycle. The original shutter design was not capable of achieving this requirement; therefore, in order to achieve these requirements, positive stop 1 and positive stop 2 were installed to reduce travel of the aperture shutter, which allowed the shutter to be used more than 2000 times during each plotting cycle.

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Modification of the Photoplotter Aperture Shutter

      In previous applications, the aperture shutter on the
photoplotter that was being used did not open and close very often
during a plotting cycle.  New requirements dictated that the shutter
be used more than 2000 times during each plotting cycle.  The
original shutter design was not capable of achieving this
requirement; therefore, in order to achieve these requirements,
positive stop 1 and positive stop 2 were installed to reduce travel
of the aperture shutter, which allowed the shutter to be used more
than 2000 times during each plotting cycle.