Electrographic flare reduction by spacing and gas control
US5225855A · kind A · utility
4Cited by
17References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 24, 1991 |
| Grant date | Jul 6, 1993 |
| Priority date | — |
| Expiry date | Oct 24, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/325
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for selectively setting the distance between the write head of an electrographic printing apparatus and a recording medium in combination with the use of a gas, present in the gap between the medium and the write head whereby the gas has a Paschen curve minimum lower than the Paschen curve for air. The combination of increasing the distance of the head from the medium along with the use of a gas as specified decreases the amount of flare while decreasing dropout and maintaining image density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.