Epson EPL-9000, Руководство по обслуживанию

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Operating Principles
Service
2.1.1.3 Development
The development is the process of creating a toner image the drum by applying toner onto
the invisible static image. CM (Charge Metal) blade spreads a thin, even coat of
toner over the magnet roll. ALso, as toner passes between the CM blade and magnet roll, it
becomes negatively charged. The magnet transports toner to the surface of the drum and
controls developing by developing bias. It is ratted and charged developing bias by the magnet
roll.
Resin Sleeve
Development
Bias
CM Blade
L
1
Bias
Toner
Figure
2-6.
Development
2.1.1.4
Image transfer is the process of transferring the toner image created on the drum in the
developing process to paper. As the image transfer process this time, we have the roller image
transfer method instead of the image transfer. In the roller image transfer method, there is
no generation of due to discharge. Also, there is no blur of motion m image transfer
because the pressure bonding of the paper with the drum and the Transfer Roll) is
maintained.
Reverse bias is applied to not transfer the positive toner onto the
Drum
Drum
Image
Transfer Roller
Sequential Bias
Reverse Bias
Figure
2-7.
Image Transfer
2-4
Rev.