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Automatic Pen Identification on Plotter Disclosure Number: IPCOM000040777D
Original Publication Date: 1987-Dec-01
Included in the Prior Art Database: 2005-Feb-02

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Powell, S Worley, BJ [+details]


In a plotter with many pens, if a pen is placed in the wrong position, the control software is unaware of this, resulting in plotting errors. If each pen is coded and the arrangement is such that the plotter system can sense the code, the application software may then associate the codes with color, pen type and pen width and determine automatically which pens are present and which are missing. If a required pen is missing, the software may initiate actions to remedy or circumvent the problem or to allow the operator to intervene. Many different scenarios are possible, all made feasible by the single innovation of machine-readable plotter pen codes. In order for a plotter to justify its cost, it should be in fairly frequent use.