Process whereby a diazo-containing material exhibits an imagewise change in triboelectric charging properties
Abstract
Abstract VISIBLE IMAGES CORRESPONDING TO LATENT ELECTROSTATIC CHARGE IMAGES ARE PRODUCED ON PHOTOGRAPHIC LAYERS INCORPORATING A RADIATION-SENSITIVE DIAZO MATERIAL, SUCH AS A DIAZONIUM SALT OR A DIAZO RESIN, WHICH EXHIBITS A CHANGE IN TRIBOELECTRIC SERIES POSITION UPON EXPOSURE TO ACTIVATING RAYS, BY MEANS OF A PHOTOGRAPHIC PROCESS WHICH INCLUDES (A) IMAGEWISE EXPOSING THE PHOTOGRAPHIC LAYER TO ELECTROMAGNETIC RADIATION CAPABLE OF EFFECTING AN EXPOSED IMAGEWISE CHANGE IN TRIBOELECTRIC SERIES POSITION, (B) DIFFERENTIALLY TRIBOELECTRICALLY CHARGING THE SURFACE OF THE EXPOSED PHOTOGRAPHIC LAYER IMAGEWISE TO FORM A LATENT ELECTROSTATIC IMAGE THEREON AND (C) DEVELOPING THE LATENT ELECTROSTATIC IMAGE BY CONTACTING THE CHARGE SURFACE WITH A DEVELOPER COMPOSITION CONTAINING ELECTROSTATICALLY ATTRACTABLE TONER PARTICLES, TO FORM A PATTERN OF THE TONER PARTICLES ON THE CHARGED SURFACE CORRESPONDING TO THE NONEXPOSED OR THE EXPOSED REGIONS.
Inventors
- 👤 Hugh G Mcguckin
Bibliographic Details
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