Imaging systems with fluorescent and phosphorescent toner
US4070577A · kind A · utility
9Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1976 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Sep 10, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G9/08
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus and method for improving contrast in the visual image formed by toner deposited on an electrostatic image such as is formed in xerography and ionography. Hard copy and real time electrostatic imaging systems utilizing a fluorescent toner in the form of particles having a fluorescent core and an electrophoretic coating. A viewing system with a radiation source of a wavelength for exciting the fluorescent toner particles and preferably a filter for suppressing the excitation radiation in the fluorescent image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.