Plotter and aligning method
US4734716A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1986 |
| Grant date | Mar 29, 1988 |
| Priority date | — |
| Expiry date | Oct 30, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01D15/28
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A plotter having the capability of unattended operation incorporates several innovations. An X-axis dual motor drive mechanism moves the plotting chart through the plotter using two independently controlled motors driving respective individual friction drives at either side of the chart. An automatic chart alignment mechanism aligns the chart with the plotter X-axis using the X-axis dual motor drive for swiveling of the chart as necessary and a sensor to detect and correct the position of the chart. A chart cutting mechanism allows chart stock supplied in roll form to be cut to a desired length for a plot using a knife assembly carried by the pen carriage like a pen. A cut chart handling mechanism enables cut charts to be retrieved and neatly stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.