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I
MECHANICAL SYSTEM
I
3.
Adjusting the
Mirror Position
(optical
distance
between
No.
1
and
No.
2
mirrors)
Adjust the
position
of
the mirror
after
attaching the
scanner
cable.
To
adjust,
relocate the
fixing
used
for
the
No.
1
mirror
mount; loosen
the
two
screws.
Note:
|..4j|^;jfMe"t#ids
to
become
slack
as
:
•
"(iore
and more
copies
are
made,
requiring
adjustment,
ii.
H.the
horizontal reproduction
ratio
beeomes
faulty
because
of
inaccu-
....
rate?'i|iki*|f^f)S%^^^J|i*i'lii„'.
:
'
1
and
No. 2
mirrors,
the
images on
-1
-
Sheet
A
-—
Sheet
B
Figure 4-17
x
=
y
correct
x
>
y
move
the No.
1
mirror
mount
into
the
direction of
a
x
<
y
move
the No.
1
mirror
mount
into
the
direction of
b
1
)
Draw
a
line
1
cm
from both
ends
of
copy
paper
(A4
or
A3) as
shown
in
Figure 4-16.
-1
cm
1
cm-
""
Lines-'
Figure 4-16
2)
Make
a copy
of
the
sheet
on which
lines
have been
drawn;
call
the
copy
obtained
this
way
sheet
A.
3)
Place a blank sheet
of
paper on
the
copy-
board,
and
feed the
sheet on which
lines
were drawn
in
the
manual mode;
call
the
delivered
sheet sheet
B.
Sheet
B
will
show
contraction
by
heat.
4)
Put
the
left
lines
on
sheet
A
and
sheet
B
together,
and
adjust the position
of
the
No.
1
mirror
mount
so
that
x
and
y
in
Figure
4-1
7
are
identical.
Note:
,-•,
•,•;•:,.=..
If
the distance
between
the No.
1
and
No.
2
mirrors
is
short,
the
copy image
will
be
enlarged;
if
long,
reduced.
No.
mirror
mount
Fixin
g
screws
(front)
^/
®
cgnsD
lb)
—
-C™
—
=
Mirror drive
cable
(rear)
Figure 4-18
4-8
COPYRIGHT©
1992
CANON
INC.
CANON
NP-1550REV.O JAN.
1992
PRINTED
IN
JAPAN
(IMPRIME
AU
JAPON]
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