Advertisement
I
OPERATIONS
AND
TIMING
5.
Scanner
Movement
for
Two-page
Separation
Mode
(copy count
"2")
Doc.
L.E.
Doc.
LE.
Doc.
LE.
Doc.
L.E.
Doc.
LE.
Doc.
L.E.
(1st
page)
(1st
page)
(1
st
page)
(2st
page)
(1st
page)
(2st
page)
INTR
—
l.
SCRVI,
SCRVI
i
i
SCRV2
i
l
SCRV2
SCFW1
SCFW1
SCFW2
\
SCFW2
V
LSTR
Scanner
home
position
sensor
signal
(Q3)
—
1
—
-I-
—
I—
I—
W—
—
n
—
j—
m—
i
I
!
SCANNER
FORWARD
command
(SCFW)
SCANNER REVERSE
command
(SCRV)
Scanning lamp
--
Forward
-«
orwar
V1.7X
r-^STBY
Reverse
Reverse
Figure 3-15
Timing
of
operations
I,
II,
and
III
shown
in
figure
3-15
is
with reference
to
the leading
edge
of
the
first
page
of
the
document
(fall
of
Q3
signal).
I :
The
distance
traveled
by the
scanner from
the leading
edge
of
the
original
is
determined by
the reproduction
ratio
and
the
copy paper
size, just
as
for
a
normal
copy.
II:
This
is
roughly the
same
as
I.
If
the
forward distance
traveled
by
the
scanner
is
greater
than
21
mm
(220V, or
240V
copier) the
DC
controller
will
judge
that
210
mm
is
the leading
edge
of
the
original.
If
the distance
that
the
scanner
moves
forward
is
less
than
21
mm,
the
point
at
which
the
scanner
reverses
in
I
will
be
the leading
edge
of
the
second
page
of
the
document.
l:Same as
I.
COPYRIGHT©
1992
CANON
INC.
CANON
NP-1550
REV.1
SEPT. 1992
PRINTED
IN
JAPAN (IUPRIMEAUJAPON)
3-17
Advertisement
