Self-agitated development process

G - Physics – 03 – G

Patent

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Details

32/12, 314/38.5,

G03G 13/08 (2006.01) G03G 15/08 (2006.01) G03G 15/09 (2006.01)

Patent

CA 1169716

ABSTRACT OF THE DISCLOSURE This invention is directed to a process and apparatus for causing the development of electrostatic latent images, the process residing in the provision of a development zone, encompassed by a flexible imaging member moving at a speed of from about 5 cm/sec to about 50 cm/sec, and a transporting member moving at a speed of from about 6 cm/sec to about 100 cm/sec, the flexible imaging member and transporting member having a distance therebetween of from about 0.05 millimeters to about 1.5 milli- meters, the movement of said members causing a shearing action in said development zone, (2) adding an insulating developer composition to the development zone, the developer composition being comprised of insulating toner particles and insulating magnetic carrier particles, (3) introducing a high electric field in the development zone, (4) the insulating toner particles being caused to migrate from one layer of carrier particles to another layer of carrier particles contained in the development zone as a result of said shearing action, and said high electric field, the carrier particles rotating inone direction, then subsequently in an opposite direction, wherein said carrier particles are continuously made available immediately adjacent to the flexible imaging member.

377464

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