Developing apparatus using one component toner with improved flo

Details Developing apparatus using one component toner with improved flo Developing apparatus using one component toner with improved flo

1993-03-01

1994-04-26

Pendegrass, Joan H.

Photocopying

Contact printing

Light boxes

118653, 430120, 355265, G03G 1508

Patent

active

053071271

ABSTRACT:
A developing apparatus includes a developer carrying member for supplying a developer to an image bearing member, wherein the developer is a one component developer, and has a flowability index of 5-30%. A developing bias voltage application device applies a developing bias to the developer carrying member, wherein the developing bias application device applies an oscillating bias voltage, including a first peak voltage, for an application period T1, for forming an electric field for urging the developer from the developer carrying member to the image bearing member, and a second peak voltage, for an application period T2, for forming an electric field for urging the developer from the image bearing member to the developer carrying member, wherein T1:T2 satisfies 1:2-1:10.

REFERENCES:
patent: 4653426 (1987-03-01), Kohyama
patent: 4989044 (1991-01-01), Nishimura et al.
patent: 5032852 (1991-07-01), Fujii et al.
patent: 5084733 (1992-01-01), Katoh et al.
patent: 5175070 (1992-12-01), Tanikawa et al.

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