Xeroprinting process using reversal development process
US5162180A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1990 |
| Grant date | Nov 10, 1992 |
| Priority date | — |
| Expiry date | Oct 18, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G5/026
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention relates to a xeroprinting process, in particular a xeroprinting process comprising the following steps: PA0 (a) image-wise exposing to actinic radiation an electrostatic master having a photopolymerizable conductive layer to selectively polymerize and thereby increase resistivity in exposed areas of the layer; PA0 (b) forming a latent image of electrostatic charge by charging the master by corona discharge; PA0 (c) reversal developing the latent electrostatic image by depositing toner particles in the non-exposed areas of the layer; PA0 (d) transferring the toner image to another substrate and subsequent fusing; PA0 (e) resetting the process by cleaning and discharging the electrostatic master. According to a preferred embodiment the reversal development is effected by means of a development electrode inducing charges in the photopolymer plate opposite to the initial electrostatic image, and by means of dry electrophotographic toner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.