Electrophotographic image recording method and apparatus
US4521097A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1982 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Sep 24, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/223
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic method and apparatus for recording micrographic images as high resolution positive or reversal transparencies. Plural planar reusable electrophotographic plates are mounted for stepwise movement sequentially along a path for a cycle of successive operations, each plate being sucessively sequentially charged, exposed to a projected micrographics image to form a latent charge image thereof, said charge image toned, the toned image dried and contact transferred under application of heat and pressure by lamination to a transparent substrate, the lamination separated and the plate cleaned and discharged subsequent to separation for reuse. The transparency carrying the micrographics image embedded therein is mounted on a suitable holder. The apparatus includes a rotor for mounting the plates about its circumference and a framework for mounting the functional stations positioned about the rotor circumference in operative condition relative the plates mounted on said rotor. A stepping motor or other incremental-type drive drives the rotor in a programmed movement. The framework and rotor are surrounded by a light-tight housing. A suitable aperture is provided in the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.