Browse Prior Art Database

SINGLE COMPONENT DEVELOPMENT

IP.com Disclosure Number: IPCOM000024554D
Original Publication Date: 1980-Dec-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 59K

Publishing Venue

Xerox Disclosure Journal

Abstract

Toner transport by a magnetic roll to the development zone in single component conducti ve development systems generally obtains a small threshold voltage. The charge density/unit mass of developed toner is very large, background control is difficult, and toner to substrate transfer is also inefficient due to the high charge density on the toner. These diffiOJlties may be overcome by employing a dielectric layer or a slowly relaxable layer on the surface of the magnetic developer roll to reduce the electrostatic charge induced on the toner particles and maintain a constant development threshold force.

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SINGLE COMPONENT DEVELOPMENT John F. O'Brien

Proposed Classification U.S. Cl. 427 Int. Cl. B05d

Toner transport by a magnetic roll to the development zone in single component conducti ve development systems generally obtains a small threshold voltage. The charge density/unit mass of developed toner is very large, background control is difficult, and toner to substrate transfer is also inefficient due to the high charge density on the toner. These diffiOJlties may be overcome by employing a dielectric layer or a slowly relaxable layer on the surface of the magnetic developer roll to reduce the electrostatic charge induced on the toner particles and maintain a constant development threshold force.