IMAGING CHAMBER OF ELECTROSTATIC RADIOGRAPH

摘要

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.