Image forming apparatus

Details Image forming apparatus Image forming apparatus

1998-11-24

2000-03-07

Smith, Matthew S.

Electrophotography

Control of electrophotography process

Control of transfer

399 44, 399101, G03G 1516

Patent

active

060351543

ABSTRACT:
An image forming apparatus includes a latent image carrier in which an electrostatic latent image is formed on the surface thereof, development unit or units for applying charged developer to the surface of the latent image carrier to visualize the latent image, an intermediate transfer body which is abutted against the latent image carrier, and to which the primary transfer voltage of polarity reverse to the charging polarity of the developer is applied and on which the visible image is primarily transferred, a secondary transfer member which is abutted against the intermediate transfer body through a recording medium and to which the secondary transfer voltage is applied to transfer the visible image on the recording medium, and a voltage applying mechanism for applying the secondary transfer voltage of the same polarity as the primary transfer voltage and larger than the primary transfer voltage in an absolute value to the secondary transfer member in case the secondary transfer is executed, and for applying a cleaning voltage of the same polarity as the primary transfer voltage and smaller than the primary transfer voltage in an absolute value to the secondary transfer member in a predetermined period in case the secondary transfer is unexecuted.

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patent: 5966561 (1999-10-01), Yamaguchi
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