Ricoh FT4430 Service Manual page 6

Paper Feed:
Paper-Feed System:
Exposure System:
Lens:
Light Source:
Photoconductor:
Charge System:
Erase:
Development System:
Toner Density Control:
Development Bias
System:
Toner Replenishment:
Toner Consumption:
Cleaning System:
Quenching System:
Image Transfer:
Paper Separation:
Image Fusing:
Fusing Lamp:
- Double universal cassette feed, 250 sheets each
(auto cassette shift)
- Manual feed table
- Optional large capacity tray (LCT) at second
feed station.
Friction-pad system
Slit exposure, moving optics
Through lens, F8, f = 180mm
Halogen lamp (85 V, 290 W)
Selenium drum (F type)
Dual wire dc corona
LED lamp unit (34 LEDs)
Magnetic brush roller
Automatic, direct density sensing
Automatic voltage change (The control board
monitors the selected image density level, drum
temperature, and rest time.)
Cartridge exchange (300 g/cartridge)
Approx. 7,500 copies/cartridge (A47% original)
Blade and brush
Photo-quenching
Single wire dc corona, pre-transfer lamp
Dual wire ac corona and pick-off pawls
Heat/pressure - roller type
Halogen lamp (840 W)
1-3
16 April '88