FrameMaker Ver5.5E(PC)Di251/Di351 MECHANICAL/ELECTRICAL
05.03.01
M-2
2.
COPYING PROCESS
1. PC Drum
• Changes the image of the original projected onto the surface of the drum to a corre-
sponding electrostatic latent image.
2. Drum Charging
• Generates a negative DC charged layer on the surface of the PC Drum.
3. Photoelectric Conversion Section
• The CCD converts the light reflected off the original to a corresponding electrical signal
and outputs it to the IR image processing section.
4. MFB2 Board
• Converts the electrical signal to a corresponding 8-bit digital image signal, makes various
corrections, and outputs the results to the memory.
• Compresses and stores in memory the digital image signal, and then outputs it to the PH
image processing section.
• After going through necessary corrections, the digital image signal is converted to a cor-
responding analog signal, based on which the intensity of the laser light is controlled.
5. Laser Exposure
• A laser beam strikes the surface of the PC Drum, creating an electrostatic latent image.
6. Development
• Negatively charged toner adheres to the latent image on the PC Drum surface, creating a
visible image.
• AC/DC negative bias voltages are applied to the Sleeve/Magnet Roller, thereby prevent-
ing toner from sticking to the background.
• Toner scraped off by the cleaning mechanism is recycled.
7. Paper Feed
• Feeds sheets of paper from the appropriate paper source.
8. Manual Bypass
• Feeds sheets of paper from the Manual Bypass Tray.
9. Image Transfer
• A positive charge is applied to the Image Transfer Roller to transfer the visible image on
the surface of the PC Drum onto the paper.
10. Paper Separation
• The PC Drum Separator Fingers remove paper from the surface of the PC Drum.
4. MFB2 Board
1. PC Drum
10. Paper Separation
9. Image Transfer
8. Manual Bypass
6. Development
2. Drum Charging
11. Cleaning
13. Fusing
7. Paper Feed
3. Photoelectric Conversion Section
12. Erase
5. Laser Exposure
14. Paper Exit
Содержание Di251
Страница 1: ...Di251 Di351 SERVICE MANUAL GENERAL 4011 7990 11 ...
Страница 2: ...INDEX GENERAL GENERAL MECHANICAL ELECTRICAL ...
Страница 3: ...GENERAL ...
Страница 18: ...MECHANICAL ELECTRICAL ...
Страница 24: ...M 4 3 DRIVE SYSTEM 1 Scanner Motor M10 2 Main Motor M2 3 I C Motor M1 1 3 2 4011M002AA ...
Страница 71: ...Di251 Di351 SERVICE MANUAL FIELD SERVICE 4011 7991 11 ...
Страница 82: ...INDEX FIELD SERVICE DIS REASSEMBLY ADJUSTMENT SWITCHES ON PWBs TECH REP SETTINGS TROUBLESHOOTING INSTALLATION ...
Страница 83: ...Di251 Di351 Allgemein Mechanik Elektrik Rev 1 1 0 03 01 I 1 INSTALLATION 3 ...
Страница 88: ...Di251 DI351 Rev 1 1 0 03 01 I 6 ...
Страница 93: ...I 5 Di251 Di351 Rev 11 0 0 03 01 10 Grounding plate screws 3 1 2 3 4 5 6 7 8 9 10 ...
Страница 99: ...I 11 Di251 Di351 Rev 11 0 0 03 01 6 Fit the Exit Tray 7 Close the Finisher Cover ...
Страница 107: ...I 19 Di251 Di351 Rev 11 0 0 03 01 1 5 3 Copy Tray Setting up Install the accessory copy tray in the shift tray unit ...
Страница 178: ...I 90 Di251 Di351 Rev 1 1 0 0 03 01 ...
Страница 179: ...DIS REASSEMBLY ADJUSTMENT 10230 ...
Страница 241: ...SWITCHES ON PWBs TECH REP SETTINGS 17196 ...
Страница 296: ...TROUBLESHOOTING 14413 ...