Minolta Di181, Руководство по обслуживанию

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FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
M-19
1. PC Drum
÷
Used as the medium on which a visible developed image of the original is formed.
2. Drum Charging
÷
A uniform negative DC charge is deposited across the entire surface of the PC Drum.
3. Photoelectric Conversion
÷
A CCD converts the image data represented by light reflected off the original to a corre-
sponding electrical signal which, in turn, is output to the IR image-processing section.
4. IR Image-Processing
÷
The electrical signal is converted to an 8-bit digital image signal (A/D conversion) which,
in turn, goes through appropriate correction before being output to the memory.
5. Memory
÷
The digital image signal is compressed and stored in memory. It is then output to the PH
image-processing section.
6. PH Image Processing
÷
After going through corrections, the digital image signal is converted to a corresponding
electrical signal (D/A conversion) that controls the intensity of the light from the laser
diode.
7. Laser Exposure
÷
The laser beam strikes the surface of the PC Drum, forming an electrostatic latent image.
8. Developing
÷
Toner negatively charged in the Developer Mixing Chamber is attracted onto the electro-
static latent image changing it to a visible, developed image.
÷
An AC/DC negative bias voltage is applied to the Sleeve/Magnet Roller to prevent toner
from being attracted onto those areas of the PC Drum which correspond to the back-
ground areas of the original.
9 COPY PROCESS
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6 5 4 3
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