Minolta EP1030 Manual page 48

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1. PE RR PAPER NREPARATION |
2. DRUM Mr aRGING g: CLEANING
3. IMAGE ERASE 10. MAIN ERASE
4. EXPOSURE 11. TRANSPORT 1190MO02AA
5. DEVELOPING 12. FUSING
6. PAPER FEEDING 13. PAPER EXIT
7. IMAGE TRANSFER
1. PC Drum
The PC Drum is an aluminum cylinder coated with a photosensitive semiconductor.
It is used as the medium on which a visible developed image of the original is formed.
(For more details, see p. M-9.)
2. Drum Charging
The PC Drum Charge Corona Unit is equipped with a Comb Electrode and a Scorotron Grid to
deposit a uniform negative charge across the entire surface of the PC Drum.
(For more details, see p. M-21 .)
3. Image Erase
Any areas of charge which are not to be developed are neutralized by lighting up LEDs.
(For more details, see p. M-22.)
4. Exposure
Light from the Exposure Lamp reflected off the original is guided to the surface of the PC
Drum and reduces the level of the negative charges, thereby forming an electrostatic latent
image.
(For more details, see p. M-24.)
5. Developing
Toner positively charged in the Developer Mixing Chamber is attracted onto the electrostatic
latent image changing it to a visible, developed image. A 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 background areas of the original.
(For more details, see p. M-12.)
6. Paper Feeding
Paper is fed either automatically from the Drawer, or manually via the Multi Bypass Table or
Manuai Bypass Table. Each Drawer has fingers that function to separate the top sheet of
paper from the rest at take-up.
(For more details, see p. M-34.)
7. Image Transfer
The single-wire Image Transfer Corona Unit applies a DC negative corona emission to the
underside of the paper, thereby attracting toner onto the surface of the paper.
(For more details, see P. M-33.)
8. Paper Separation
The paper, thanks to its inherent strength, is naturally separated from the small-diameter PC
Drum. This is combined with the application of a positive DC bias with a comb electrode. The
two methods ensure that the paper is definitely separated from the surface of the PC Drum.
(For more details, see p. M-33.)
9. Cleaning
Residual toner on the surface of the PC Drum is scraped off by the Cleaning Blade.
(For more details, see p. M-18.)
10. Main Erase Lamp
The Main Erase Lamp applies a positive DC charge to neutralize any surface potential remain-
ing on the surface of the PC Drum after cleaning.
(For more details, see p. M-32.)
11. Transport
The paper is fed to the Fusing Unit by the Guide Plate.
(For more details, see p. M-45.)
12. Fusing
The developed image is permanently fused to the paper by a combination of heat and
pressure applied by the Upper and Lower Fusing Rollers.
(For more details, see p. M-46.)
13. Paper Exit
After the fusing process, the paper is fed out by the Paper Exit Roller onto the Copy Tray.
(For more details, see p. M-49.)
M-3