Fig. 4-42 Circulation Of Developer In The; Fig. 4-43 Replenishing Mechanism Main Components - Canon NP-70 Service Manual

4-36
NP -70
SL6
Some additional components that are mounted on the underside of the reservoir cover are:
a)
Developer Pump Motor
This motor circulates and stirs the developer in the reservoir and pumps it to three loca-
tions — to the ATR Subassembly for density checking, to the Drum Cleaner Assembly for
friction reduction and cleaning, and to the developing tray for development of the electro-
static latent image. This flow of developer is shown in Fig. 4~2.
Toner Bottle
Toner Hole
i
Dispersant Bottle
Dispersant Hole
Developer
Reservoir
Developer
Pump Motor
Upper Surface
of Drum
ATR Subass'y
(Density detector)
Developing Tray
Fig. 4-42 Circulation of Developer in the NP-70
b) Toner Replenishing Mechanism
The replenishing mechanism consists of the components which cause the feeding of toner,
as directed by the ATR circuit. They are depicted in Fig. 4-43.
Control Lever
Copier Rear Plate
Toner Bottle Valve
Entry Hole
Toner Replenishment
Lever
Fig. 4-43
Replenishing Mechanism Main Components
Toner Valve
Trip Lever
Second Printing~une, 1974
© CANON INC.