Method for improving the printing quality and repetition accuracy of electrographic printers and a device for accomplishing the method
US5402158A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 10, 1993 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | May 10, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2217/0025
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A latent electrical charge pattern of electrical signals is produced by an electrode matrix. Apertures between the electrodes are opened and closed, respectively, to expose electric fields for the attraction of pigment particles of toner against an information carrier. The electrical charge pattern electrostatically controls the transmission of electrical fields through the apertures of the matrix to attract particles of toner against the information carrier. The apertures are opened and closed by generating electrostatic fields between the electrode layer, particle supply and backing electrode. Each electrode is arranged on a carrier to completely surround one aperture and is individually connected to a voltage source to supply the electrical signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.