Method for improving the printing quality and repetition accuracy of electrographic printers and a device for accomplishing the method
US5235354A · kind A · utility
60Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 6, 1991 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Dec 6, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2217/0025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Method and device to improve printing quality and the repetition accuracy of electrographical printers, in which are produced a latent electric charge pattern of electrical signals by means of an electrode matrix or the like, which respectively opens and closes passages between electrodes for exposing electric fields for attraction of pigment particles (11) against an information carrier (7). The electrodes (1,2) of the electrode matrix in the area about one or several open passages (3) are screened electrostatically against closed passages, by means of at least two electrically isolated electrodes (1,2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.