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I
COPYING
PROCESS
I
I.
IMAGE FORMATION
PROCESS
A. Outline
Copy
board
glass
III
II
II
"
"
rr\
/>
i-JS
—
Scanning lamp
<*r
—
<*>
i
Lens
1
Developing
T*
Primary
corona assembly
assembly
Pre-exposure
lamp~-^^j\
Cleaning
roller
Drum
cleaner..
assemrjiy
i
Lower
fixing roller
Figure
2-1
This copier consists
of
the
units
shown
in
Figure
2-1.
The image
forming
process
is
divided
into
the
eight
steps
shown
below.
Step
1
:
Pre-exposure
Step
2:
Primary corona
(negative
DC)
Step
3:
Image exposure
Step
4:
Developing
(positive
plus
AC)
Step
5:
Transfer (negative
DC)
Step
6:
Separation
Step
7:
Fixing
Step
8:
Drum
cleaning
Electrostatic latent
image
formation block
c
(
2.
Primary corona
)
**
(
3.
Image exposure
j
1
.
Pre-exposure
(
8
Drum
cleaning
)
J
(
Copy
delivery
j
.
Fixing
~~j
6.
Separatio
(
4.
Developing
)
;
J
,
,
(
5.
Transfer
)
C
Multi
feed
")
n
j
Q
Registration
)
c
Cassette
w
COPYRIGHT©
1992
CANON
INC.
Flow
of
copy paper
-»—
Direction of
rotation of
drum
Figure
2-2
CANON
NP-1550
REV.1
SEPT. 1992
PRINTED
IN
JAPAN
(IMPRIME
AU
JAPON]
2-1
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