Photoelectrophoretic electrostatic tacking capstan web tension system
US3981459A · kind A · utility
5Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1975 |
| Grant date | Sep 21, 1976 |
| Priority date | — |
| Expiry date | Apr 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S242/906
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
A photoelctrophoretic imaging apparatus for controlling tension of a transported conductive web. In a preferred embodiment, the web tension is controlled by an electrostatic capstan roller driven by an A.C. motor and gear box through an overdriven clutch. Tension is supplied to the web from the electrostatic capstan roller through electrostatic tacking force between the roller and the web. The electrostatic tacking force is obtained by grounding the conductive side of the web and applying a pulsed D.C. voltage to the rolls.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.