Toshiba E-STUDIO900 Technical Training Manual page 73

2.6 DEVELOPMENT
2.6.1 OVERVIEW
7
6
13
B070D301.WMF
1. Hopper Filter
2. Hopper Center Filter
3. Toner Hopper Sensor
4. Agitator
5. Toner Supply Roller
6. Upper Development Roller
7. Doctor Blade
This copier uses a double roller development system and a dual component
development process with toner particles 6.8 µm and developer particles 50 µm. To
improve image quality, the width of the magnetic area on the lower development roller
has been reduced.
This system differs from single roller development systems in that:
• It develops the image in a narrower area
• It develops the image twice
• The relative speed of each development roller against the drum is reduced.
This machine contains a toner recycling system. Toner recycled from the drum
cleaning unit is transferred to the toner hopper with fresh toner, where they are mixed
by the toner agitator. The mechanism is explained in the Toner Supply and Recycling
section.
PTM
8
12
2-48
3
9
10
11
8. Separator
9. Toner Transport Coil
10. Development Agitator
11. TD Sensor
12. Paddle Roller
13. Lower Development Roller
1
2
5
B070D302.WMF
B070/B071
4