Canon NP-1010 Service Manual page 71

Figure 4-51
B. Transfer Corona Unit
1. Outline
The corona wire used for the transfer co-
rona unit is 0.08 mm in diameter. The wire at
the time the copier is shipped out of the fac-
tory is not gold-plated; gold-plated wire, how-
ever, may be used in the field.
2. Removing the Transfer Corona Unit
1) Remove the electrical unit; see Figure 4-
52.
2) Remove the screw, and pull out the trans-
fer corona unit.
0
Screw
@ Transfer corona unit
3.
1)
2)
Figure 4-52
Fitting the Corona Wire
Remove the front and rear covers from the
corona unit.
Fray a length of about 40mm from the co-
rona wire reel (0.08 mm dia.), and form a
ring at its end with a diameter of about 2
mm.
Note:
To form the ring, wind the wire around a hex
key once, turn the hex key about three to four
times. and twist the wire.
3)
4)
Cut the end of the corona wire (excess) to
less than 1 mm with a nipper.
Hook the ring of the corona wire as shown
in Figure 4-53, hook the corona wire ten-
sion spring on the corona wire, and twist ,'- .'
the spring three to four times as shown in
the figure.
j /
5)
6)
Figure 4-53
Cut the excess corona wire to less than 1
mm with a nipper.
Pick the end of the corona wire tension _'--
spring with tweezers. and hook it on the
corona electrode.
\\
Note:
Make sure that the corona wire is free of
bends or twists and its gold-plating has not
peeled.
4-18 CNPVNI6HT OINNN CANON INC.
CANON HP-1010 REV.0 DEC. 1986 PAINlED IN JAPAN IIMPNIME AU JAPONI