Paper Pickup Roller Assembly; 2.3-10 Copy Conveying Assembly; 2.3-11 Heater Assembly; 2.3-12 Blowers And Fans - Canon NP-70 Service Manual

NP•70
2-7
* Loading capacity is about 400 sheets.
* Standard paper to be used should be 64 g/m2 in weight.
* An interlock (MS 15) is provided in the Cassette Holder Assembly, so that the copying ope-
ration cannot be performed unless the Cassette Assembly is completely set in the main
body.
*Copying operation cannot be performed when paper in the cassette has run out.
2.3-9 PAPER PICKUP ROLLER ASSEMBLY
This assembly is located at the lower left end of the copier, just below the Copy Conveying
Assembly. This assembly is operated in a timed manner to pick up paper and feed it. This
timing ensures that the image is transferred to the copy paper correctly positioned.
2.3-10 COPY CONVEYING ASSEMBLY
The Conveying Assembly is located at the upper left end of the copier. If functions to convey
a sheet from the drum to the copy tray. As the paper moves across this assembly, it passes
over the Heater Assembly for evaporation of dispersant.
2.3-11 HEATER ASSEMBLY
This assembly, mounted within the Copy Conveying Assembly, is used to heat the paper slight-
ly for the purpose of evaporating the dispersant absorbed during transfer. As toner will smear
with the presence of dispersant, this evaporation step is necessary to permit handling of copies.
The toner will not smear, however, when the copy paper is dry; therefore, this step is known
as "Fixing" the toner.
2.3-12 BLOWERS AND FANS
Three units are provided for the multiple functions of cooling, ventilation, and paper separa-
tion.
2.3-13 COPY SELECTOR SUBASSEMBLY
This subassembly consists of the mechanism to control the selection of the number of copies
that the machine will produce when the built-in COPY Button is pressed to initiate copy ope-
ration.
2.3-14 SAFETY ASSEMBLY
The Safety Assembly consists of several microswitches, their control lEvers, and a solenoid.
These components act to stop machine operation when the machine is opened for inspection
or when a jam takes place within the machine. The assembly is located directly below the
power switch on the left end of the machine.
© CANON INC.
Second Printing-June, 1974