Image forming apparatus

Details Image forming apparatus Image forming apparatus

1998-01-20

1999-08-10

Smith, Matthew S.

Electrophotography

Control of electrophotography process

Control of developing

399 44, 399270, 399285, G03G 1506

Patent

active

059372281

ABSTRACT:
An image forming apparatus of the present invention is capable of forming an oscillation electric field in a developing region on the basis of the particle size of toner and the particle size of magnetic carrier. Assume that the oscillation electric field includes a phase for causing the toner to move toward a latent image and having a duration t.sub.1, that the electric field has a period T, that the toner has a weight-average particle size of L.sub.t, and that the carrier has a weight-average particle size of L.sub.c. Then, there hold a relation of 1.0.times.10.sup.-4 <t.sub.1.sup.2 /L.sub.t <1.0.times.10.sup.-3 The apparatus insures images with uniform dots and including a minimum of noise.

REFERENCES:
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patent: 5655191 (1997-08-01), Furuya et al.
patent: 5678130 (1997-10-01), Enomoto et al.
patent: 5752140 (1998-05-01), Dunzuka et al.

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