3

(5)Development

Development is the process of making the elec- trostatic latent images visible to the eye (visible images).

Developer material is supplied to the photocon- ductive drum surface by the magnetic roller. The toner in the developer material adheres to the areas on the drum surface where the poten- tial is lower than the developer bias which is applied to the magnetic roller (reverse develop- ment method).

Magnet

Magnetic roller

Toner

Carrier (always attracted onto the magnet)

Toner

Bias voltage –550 VDC

Toner

Photoconduc- tive drum

Photoconductive layer

Aluminum base

Drum

Magnetic roller

Fig. 3-207

White background

Halftone

Solid

 

 

 

 

 

 

Fig. 3-208

 

White background

 

 

 

 

The (–) potential of the

– 750V

Image not developed

 

 

 

 

photoconductive drum

 

 

Bias poten-

is higher than the devel-

– 550V

 

 

tial

oper bias.

 

Image developed by toner

 

 

 

– 300V

 

 

The (–) potential of the

 

 

 

photoconductive drum

– 200V

 

 

is lower than the devel-

 

 

oper bias.

 

 

 

 

– 00V

 

 

 

0

Fig. 3-209

 

 

 

 

e-STUDIO350/352/353/450/452/453

3 - © 2003 - 2008 TOSHIBA TEC CORPORATION All rights reserved

COPY PROCESS

 

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Toshiba 350, 452, 453, 353 service manual Magnet Magnetic roller Toner
Page 85 Page 87

350, 353, 453, 452 specifications

The Toshiba 452, 282, and 352 models represent a significant leap in multifunction printing technology, designed for office environments that prioritize efficiency, reliability, and advanced features. These models are part of Toshiba's commitment to innovation and sustainability, emphasizing quality output while reducing environmental impact.

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In summary, the Toshiba 452, 282, and 352 models are versatile multifunction printers that offer a blend of speed, quality, and user-friendly features. Their commitment to sustainability and security makes them ideal choices for modern office environments looking to enhance productivity and efficiency.
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