| 1. | This design was also scaled up for very large pen plotters.
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| 2. | There were five typewriters for printed output, five pen plotters to produce graphs.
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| 3. | When pen plotters became widespread, a special variety of point assemblies was produced.
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| 4. | The image quality produced by electrostatic plotters is generally lower than that of pen plotters.
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| 5. | Also, conventional ball-point pens can be modified to work in most pen plotters.
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| 6. | Pen plotters print by moving a pen or other instrument across the surface of a piece of paper.
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| 7. | Some Hewlett-Packard pen plotters had two-axis pen carriers and stationery paper ( plot size was limited ).
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| 8. | Pen plotters became obsolete with the adoption of ink-jet printers, and processors fast enough to rasterize complex images.
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| 9. | Pen plotters have essentially become obsolete, and have been replaced by large-format inkjet printers and LED toner based printers.
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| 10. | Indeed, most modern pen plotters have commands to control slewing speed, depending on the type of pen currently in use.
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