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TONER MIXTURE FOR IMPROVED IMAGE QUALITY AND HIGH PERFORMANCE BLADE CLEANING

IP.com Disclosure Number: IPCOM000023466D
Original Publication Date: 1977-Oct-31
Included in the Prior Art Database: 2004-Mar-31

Publishing Venue

Xerox Disclosure Journal

Abstract

This disclosure relates to xerographic development modes and techniques wherein a first layer of fine particles is used to develop the image followed by a second layer or layers of conventional toner material of larger particle size deposited upon the first layer of fine particles to develop the image. The second layer of conventional toner of larger particle size is transferred to a suitable substrate. One type of toner mixture for developing an image in this manner is designated as a toner mixture having a bi-modal size distribution. An-other type of development system for developing an image in this manner is described as a double development system where-in a first developer mixture having small particles (not necessarily toner) and an appropriate carrier is used to develop the image followed by a second developer mixture having larger toner particles and an appropriate carrier to develop the image with a second layer of toner. These devel-opment modes and toner mixtures provide improved background suppression, improved resolution and alleviation of hollow character problems.