Canon NP-1010 User manual

NP-1010
SERVICE
MANUAL
(for/l20/240V)
REVJSION 0 DEC. 1988
Canon
FY8-1394-000
COPYRFGHT 1988 CANON INC.
CANOSJ NP-1010 REV.0 DEC. 1988 PRINTED IN JAPAN

._-
I. FEATURES
1. Fixed copyboard, yet with the zoom mechanism.
. The copier can deal with documents as large as B4 in size (84 - A4) and is the smallest fixed
copyboard copier with the zoom mechanism.
2. Automatic density adjustment.
. The copier automatically adjusts itself to suit the density of the documents for production of
crisp copies.
3. 1% increment zoom mechanism in addition to fixed ENLARGEMENT and REDUCTION.
. In addition to the fixed ENLARGEMENT/REDUCTION reproduction ratios, the copier is equipped
with a zoom mechanism which allows enlargement/reduction in 1% increment between 70% to
122%.
4. Clam-shell type top.
. The top of the copier is designed to open to provide free access in removing jams.
5. Cassette as well as manual feeding.
.The copier comes with a cassette as standard, capable of holding 250 sheets of copy paper. In
addition, with the manual feed mode, copies may be made on sheets as small as name cards or
postcards.
1 COPYRIGHTOl9tl8CANONINC. CANON NP-1010 AN.0 DEC. 1988 PAINTELI IN JAPAN [IMPRIME AU JAPON) l-l

II. SPECIFICATI’ONS
cross feed). label, name card (200 g/m2 or
), onion paper (63 g/m2). high-quality papei
to 128 g/m2, coarse-grained paper (50 g/
Two-sided copying
two copying operations for each side.
l-2 COPYRIOHI 01980 CdNUNINC. CllNON HP-1010 RN.0 OEC. 19EO PRINIEU IN JAPAN UMPAIME AU JAPONI

arformance I Universal 1Depth: 2.5 mm (about 250 sheets of 80 g/m2
paper)
Width: A4ILGL (216 mm) to A5iMini (I 39.5
them
3assette
A4
mm)
Length: A4ILGL (356 mm) to A5/Mini (210
mm)
/Depth: 25 mm (about 250 sheets of 80 g/m2
1Width: r!?lO mm)
Length: A4 (297 mm) to name card (51 mm)
20 sheets (approx.; A4 of 80 gim2)
Leading edge: 2.0 + 2.0, - 1.5 mm
Operating
environment
Power supply
Power
consumption
Noise
Temperature 5” to 32.5”C
Humidity 5% to 85%
Atmospheric 0.6 to 1 atm.
Max.
Copying
Stand-by
-. ,
Ozone (average over 8 hrl
Width
1.2 kW
55 dB or less (1 m from machine)
42 dB or less (1 m from machine)
^_
1 u:I ppm or less
/ 506 mm (w/o tray)
.-.
1
Dimensions Depth 411 mm
Height 288.5 mm
Weight 24.5 kg (body and cassette and tray)
Consumables COPY paper Keep wrapped to avoid humidity.
Drum unit See CHAPTER 5.
Mode Reproduction ratio Size Copieslmin
DIRECT 1 : 1 f0.6% A4 - A4 10
REDUCTION I 1 : 0.704 fl.O% 84 - B5, A4 + A5 10 ,I0
REDUCTION II 1 : 0.813 -c 1.O% 84 - A4 10
ENLARGEMENT I 1 : 1.153 fl.O% 85 - A4 9
ENLARGEMENT II 1 : 1.223 kl.O% A5 - B5 9
ZOOM 0.70 - 1.22 Fl.O% A4 - 85, B5 + A4 10.9
Table l-l
Specifications are subject to change without notice for product improvement.
COPYRIGHT01908 CANONINC. CdNONHP-1010RN.0OEC.1980PAINTEOINJAPANIIMPRIMEAU JAPONI l-3

III. NAMES OF PARTS
A. External View
0 c
0 c 0P9 tray
opyboard cover i-’
@ Copyboard glass
@ POWer switch
@ Paper feed tray
8 CObttol panel
0 Cassette
Figure 1-1
0 Drum unit
0 Toner cartridge
0 Release lever
0 Developing unit
0 Fixing unit

B. Cross-Sectional View
Mirror 3 0
Mirror 2
Mirror 1 g
Scanning lamp Q
Copyboard cover Q
Pm-conditioning exposure lamp
Reflector (for pm-conditioning exposure lamp) :
Blank exposure lamp (front/rear) 0
Zoom lens
Mirror 6 :
Blank shutter
Reflector (for blank exposure lamp) :
Mirror 4
Mirror 5 :
Manual feed guide
U-turn unit
Figure l-3
Cassette feed roller
Manual feed/Cassette feed roller
‘Cassette pick-up roller
Toner cartridge
Registration roller
Developing cylinder
Transfer corona unit
OPC drum
Primary corona unit
Waste toner unit
Feeder unit
Fixing assembly cleaning unit
Fixing roller
Separation claw
Cassette ‘8
Copy tray

IV. OPERATION
A. Control Panel
DENSITY Correction Knob
Use the knob to adjust the copy density in
the automatic or manual density adjust-
ment mode.
EXPOSURE CONTROL lever
Use the lever to darken or lighten the copy
in the manual mode.
ZOOM/COPY NUMBER Indicator
Set the number of copies to make, and
press the key; the number will be dis-
played on the indicator. The number de-
creases for each copy made and returns to
the initial number after all copies have
been made.
The indicator also displays“ p “for feeding
error or absence of paper and “ E “for self
diagnosis.
Press the ZOOM key, and set the
reproduction ratio desired; the ratio will be
displayed on the indicator.
CLEAR/STOP Key
Press the key to stop continuous copying;
the operation will stop after completing
the current copying cycle.
Press the key to clear the display on the
indicator in the standby mode; the copy
count will return to ‘I’, or the reproduction
ratio will return to ‘100%‘.
COPY START Key
Figure l-4
ZOOM/COPY NUMBER INPUT Keys
Use the keys to set the number of copies
to make.
With a press on theI ZOOM key, a
reproduction ratio may be between 70%
and 122% in 1% increment.
ZOOM MODE Key
Press the key to set a reproduction ratio
other than those fixed.
REDUCTION/ENLARGEMENT Key
Use the key to select DIRECT, ENLARGE- I
MENT or REDUCTION.
AE Key
Use the key to activate or deactivate the
AE (automatic density adjustment) mode.
AE Indicator
The indicator lights while the AE mode is
in effect.
JAM Indicator
The indicator flashes in response to a jam.
TONER OUT Indicator
The indicator flashes when toner is running
short. _.
DRUM UNIT Indicator
The indicator flashes to advise replace-
ment of the drum unit. 1 ,
l-6 COPYRIGHT 01988 CANON INC. CANON HP-1010 AEV.G DEC. 1988 PAINTED IN JAPAN [IMPAIME AU JAPONI

Basic Copy Operation
Shift the power switch to ‘I’.
If the temperature of the fixing assembly is
below the specified value, the MAIN/WAIT
indicator flashes at long intervals.
If the COPY START key is pressed at the
time, the indicator starts to flash at short
intervals to indicate that copying will start
as soon as the temperature reaches the
specified value.
If the COPY START key is not pressed, the
indicator remains lit as soon as the tem-
perature reaches the specified value to in-
dicate that the copier is ready.
The copier normally needs about 30 set to
warm up (at 20°C).
Open the copyboard cover, and place the
document face down aligned with the size
index.
See Figure l-5.
Sire index
Figure l-5
Press the A key if manual adjustment of
the density is desired; use the exposure
control lever to suit the density of the
document.
Press the REDUCTION/ENLARGEMENT key
or ZOOM MODE key as desired.
When the ZOOM MODE key is pressed,
the ratio may be in 1% increment between
70% and 122%.
When the REDUCTION/ENLARGEMENT
key is pressed, each press activates the re-
production ratios as shown in Figure 1-6.
Figure l-6
Check that the cassette is set in the cas-
sette holder.
Press the COPY NUMBER INPUT key to
set the number of copies to make (I
through 99), and check the number on the
COPY NUMBER indicator.
Press the COPY START key.
Copying will not start while the MAIN/
WAIT indicator is flashing; however, the
COPY START key may be pressed at the
time so that copying will start as soon as
the, copier is ready.
To stop continuous copying, press the
CLEAR/STOP key. The copier stops after
completing the current copy. The number
on the indicator will be the one set initially.
Manual Feeding
Set a document on the copyboard.
Press the A key to clear the AE mode if
manual adjustment of the density is de-
sired; thereafter, use the EXPOSURE CON-
TROL lever to suit the density of the docu-
ment.
Slide the guide on the manual tray to suit
the size of the copy paper.
Feed the copy paper along the guide of
the manual tray.
The copier starts automatically as soon as
it detects the copy paper.
The copy paper may be placed on the tray
even while the MAIN/WAIT indicator is
flashing; the paper will be fed into the
copier, and copying will start as soon as
the indicator stops flashing and remains lit.
Note:
Wait until the scanner has made a’complete
trip before feeding the second sheet of paper.
Two-Sided Copying
1) Make sure that the following conditions
are met:
Turn over the copy paper, keeping its near
and far edges oriented the same way for
both sides.
The copy paper is not moist or curled.
The copy, paper is 60 to 128 g/m2 in
weight.
Each side of the copy paper is used for a
single copy run only.
The copy paper has not been used for
overlay copying.
Near edge Near edge
Figure l-7
COPVAIGHT018sDCANONINC. CANONHP-1010AN.0DEC. KlBtl PAINlEO IN JAPAN IIMPAIME AU JAPONI l-7

C. JAM Indicator ON “ fi ”
When a jam occurs inside the copier, the
JAM indicator goes ON. Perform the following
to clear the jam,
* Do not tear off the paper; be sure no paper
is left behind inside the copier.
Pull up the open/close lever, and open the
copier.
Clear the jam.
If the jam is inside the fixing assembly. pull
it farther inside,
If the jam is in the pick-up unit, pull it out
in the feedina direction.
If the jam is-in the delivery unit of the fix-
ing assembly, open the delivery unit.
Close the copier carefully.
Note:
. Be sure to be quick in clearing the
jam, and be sure that the drum is
kept free of sunlight.
. Do not leave finger prints or scratches
on the drum.
D. ADD PAPER Indicator ON “P ”
The ADD PAPER indicator goes ON in re-
sponse to the following conditions:
. The cassettes have run out of paper.
. The COPY START key is pressed when
there is no cassette in the cassette holders,
. When there is a jam in the U-turn unit.
Check if there is paper inside the cas-
sette(s).
Set paper if there is no paper inside the
cassette(s).
If there is paper, perform the following:
Open the cover of the U-turn unit and look
for a jam.
Remove the jam, if any.
Remove the paper from the cassette(s),
and arrange and re-set it.
Check if the cassette(s) is properly set in
the cassette holder.
Press the COPY START key.
The indicator goes OFF, and the remaining
number of copies will be made.
l-8 COPvAlGHT miss CANON INC.
E. TONER OUT Indicator ON “ ,$ ”
The TONER OUT indicator goes ON when
the toner starts to run short.
I) Open the upper unit.
Figure l-8
2) Turn the knob of the toner cartridge back
and forth several times and then counter-
clockwise (180 deg.), and pull the
cartridge out to the front.
I(
Figure 1-g Figure I-10
3) Shake the new toner cartridge vigorously
side to side about ten times.,
Figure l-l 1
CANON HP-1010 AN.0 DEC. 1988 PAINTED IN JAPAN lkilME AU JAPON)

4) Pick the tip of the seal, and insert the
toner cartridge until it stops while peeling
the seal.
I I
Figure l-l 2
5) Pull and peel the seal toward the front
with care.
6) Turn the knob of the toner cartridgk clock-
wise until it stops.
%
Figure I- 13
COPYRIGHT 01988 CANON INC. CANON HP-1010 REV.0 OEC. 1900 PRINTEO IN JAPAN IIMPAIME AU JAPONI l-9

F. Replacing the Fixing Assembly Cleaning
Unit
Replace the fixing assembly cleaning unit
when replacing the toner cartridge; replace the
cleaning unit upon replacement of every two
toner cartridges.
1) Remove the copy tray, and open the deliv-
ery unit.
2) Remove the used fixing assembly cleaning
unit.
. If the fixing roller is found to be soiled,
clean it with a dry cloth.
3)
4)
G.
Figure 1-14
Mount the new fixing assembly cleaning
unit.
Close the delivery unit, and mount the
copy tray back on.
Density Correction Knob
If the density of copies seems to be too
dark or too light in the automatic or manual
density adjustment, turn the knob for optimum
density. (Turn it clockwise to make the copies
lighter.)
H. Cleaning
Advise the user to clean the following
parts if images start to carry smudges.
Note:
. Be sure to be quick in clearing the jam,
and be sure that the drum is kept free
of sunlight.
. Do not leave finger prints or scratches
on the drum.
(1) Copyboard glass and Copyboard cover.
Wipe them with a moist cloth, and then
with a dry cloth; if dirt remains, wipe them
with a solution of mild detergent, and then
with a dry cloth.
I-IO COPV6MlTQl966CANONINC. CANON HP-1010 AN.0 DEC. 1988 PAINTEO IN JAPAN (IMPRIME AU JAPONI
(2) Primary corona wire.
Pull out and push in the primary corona
wire cleaner (provided) several times to clean
the wire.
Grirna ry corona
wire cl&ier
Figure l-l 5
.-
(3) Transfer corona wire.
Open the copier, and clean the transfer ’
corona wire with a cotton-tipped stick. \
Figure 1-16
(4) Transfer guide.
Wipe the transfer guide with a well-wrung
moist cloth.
Figure 1-17
__-
I,,,’

(5) Static eliminator.
Open the copier, and clean the static
( eliminator(orange) with the brush attached to
I thetip of the cleaner (provided).
_--,I
,,--
f-
Figure 1-18
COP~AI~HTCY388CANONINC. BHOlNP-,tIC!REV.0DEC.1988PRIWTEDINJAPANIIMPAIMEfluJ8W I-II

I. IMAGE FORMATION PROCESS
Copyboard glass
I N / I N , N N ,, N ,/ ,, I I
i’
+“\ &
scanningIamp
Lens
k------------------(_-- )--
Figure 2-l
The copier is an electrophotographic
copier equipped with a photosensitive drum.
See Figure 2-l for its construction.
The copier forms images in the following
eight steps:
step 1 Preconditioning exposure
Step 2 Primary corona (-)
Step 3 Scanning exposure
Step 4 Development (AC and DC biases)
Step 5 Transfer corona 1-j
Step 6 Separation corona
Step 7 Fixing
Step 8 Drum cleaning
Figure 2-2 is a sequential diagram which
shows how these steps involved in forming
images are related to each other.
- copypwer flow
c DlLction 0‘ drum rotmon
Figure 2-2
The photosensitive drum is of a two-layer
construction; its outer layer is made of organic
photoconductor (OPC), and the inner layer is
an aluminum base made of conductor.
Photoconductive layer
‘am
Figure 2-3
COPYAIGHT @KISSCANON INC. CANON NP-1010 AN.0 DEC. 1988 PAINTED IN JAPAN UMPAIME AU JAPONI 2-l

1. Formation of Electrostatic Latent Image Step 2 Primary corona
This block consists of the first three steps
of the image formation process; at its end, the
areas of the drum corresponding to dark areas
of the document are left with negative
charges, and those representing light areas are
rid of negative charges.
The pattern of charges so formed is not
visible to the human eye and, therefore, is
called an “electrostatic latent image.”
a ..
.,.,
,...
’
lil:--
;.,.::“/
r
:.,
‘.
c
T
Time ItI
Figure 2-4
Step 1 Pre-conditioning exposure
Figure 2-5
In this step, or pre-conditioning exposure,
the surface of the drum is exposed to light
from the pre-conditioning exposure lamp
through a filter. All charges remaining on the
surface of the drum from the preceding copy
cycle are eliminated in preparation for ex-
posure by the primary corona. Such charges,
if left as they are, could result in copies with
uneven density.
Figure 2-6
In this step, the drum is charged by the _,-~
primary corona. Further, the drum is charged
uniformly by the grid. As a result, its surface
will come to have a uniform layer of negative \i
charges and maintain primary potential.
step 3 Scanning exposure
Optical image
I
._.,.,._.,._.,.,._._.,.,.,.,.,.,.,,.;_.,. .,.;_
Figure 2-7
In this step, the optical image of the docu-
ment is projected on the surface of the drum
to neutralize the charges over areas meant to
be light.
._.
_.
I-.
2-2 COPVAI6HT 01988 CANON INC. CANON WP-IOIO NIV.0 DEC. 1988 PAINTED IN JAPAN IIMPAIME AU JAPONI

step 4 Development
Figure 2-8
As shown in Figure 2-8. the developing
assembly consists of a developing cylinder
and a magnetic blade; the developing cylinder
itself is made up of a magnet fixed in position
and a cylinder which rotates around the mag-
net. The black developer is a single-composi-
tion developer of magnetite and resin. The de-
veloper has insulating properties and is
charged to a positive potential by friction
against the rotating cylinder.
Figure 2-10
During development, the toner is attracted
to the OPC drum by the work of the surface
potential of the drum and the developing bias
(at time of positive component) and turns the
electrostatic latent image to a visible image.
Excess toner is attracted back by the surface
potential of the drum and the developing bias
(at time of negative component).
The DC bias is known to affect copy den-
sity; the higher the DC bias, i.e., closer to OV,
the higher the density, but with an increased
likelihood of fogging.
Step 5 Transfer
Magnet ’
Figure 2-g
A concentrated magnetic field develops
between the magnet and the tip of the blade,
and the developer is attracted to the magnetic
field.
The magnetic field holds the developer it
has attracted virtually immobile and creates a
collection of developer particles hanging from
the tip of the blade. As the cylinder rotates,
the developer particles leave the magnetic
field to deposit themselves on the cylinder in a
thin, uniform layer.
J,
Figure 2-l 1
In this step, a negative corona is applied to
the back of the copy paper so as to attract
the positively charged toner to the copy paper.
Since both the developing cylinder and the
blade are given AC and DC biases (negative
component) at the same time, the resulting
wave form of the developing bias has a larger
negative component than positive.
COPYRIGHT 01ilAA CANON INC. CANON HP-1010 AEY.0 DEC. 1988 PAINTED IN JAPAN IIMPAIME AU JAPONI 2-3

Step 6 Separation
Static charge eliminator
Figure 2-l 2
In this step, the copy paper is separated
from the drum, making use of the body of the
copy paper. To prevent copy paper without
much body from remaining on the drum, a
positive voltage is applied to the static charge
eliminator, thereby weakening the attraction
between the drum and the copy paper.
Step 7 Fixing Fixing roller cleaning felt
/
COPYPaPer
- “pper
2-4
Figure 2-13
heater
fixing roller
In this step, the copy paper carrying a
transfer image moves between two heated
rollers, and the transfer image is fused to the
copy paper.
To prevent jams and toner offset, the up- ,’
per roller remains in contact with a cleaning
pad impregnated with silicone oil; the pad ‘-
serves to apply a small amount of silicone oil
as the roller rotates.
Cleaning blade
Figure 2-14
In ,this step, toner remaining on the drum
surface is scraped- off by the cleaning blade
onto the sweeper strip. The toner is then
moved to to the space at the rear of the
cleaning unit by the sweeping blade.
COPYRIGHT 01988 CANOW INC. CANON HP-1010 AN.0 DEC. 1988 PAINTED IN JAPAN [IMPRIME AU JAPONI

,/--. 1
/- \1
/- (
II. AUXILIARY PROCESSES
1. Blank Exposure Lamp
See p. 3-20.
2. Ozone Filter
The exhaust fan is equipped with an ozone
filter, which breaks down the ozone generated
by the coronas into oxygen by catalytic action.
COPYRIGHT OIW CANON INC. CANON HP-1010 REV.0 DEC. 1988 PRINTED IN JAPAN IIMPAIME AU JAPONI 2-5

I. BASIC OPERATIONS
A. Functional Blocks
The copier can be divided into four functional blocks; i.e., paper pick-up/feed system, exposure
system, image formation system, and control system.
r------
I Control system 1 r-------- 1
Exposure system I
Primary conxw unit
unit Fixing assembly I
I
Figure 3-l
COPVAIEHTOWlA CANONINC. CANONNP-1010AN.0 DEC.1988PRINTEDIN JAPAN(IMPRIMEAUJAPONI 3-l

B. Electrical Circuitry
The electrical operations of the copier are controlled by the microprocessor on the DC controller
PCB. The microprocessor reads the input signals from the sensors and operation keys as instructed
by the program stored in advance, and sends output signals as necessary to drive the motors,
solenoids, lamps and other loads.
Note:
The microprocessor used by the copier is equipped with a built-in AD converter and, therefore, is ca-
pable of reading analog signals as well as digital signals. The signals bearing A in Figure 3-2 repre-
sent analog signals.
The main motor (Ml) is a synchronous motor that uses the frequency of the power supply as its
reference; the scanner motor (M21, on the other hand, is a stepping motor that runs on the frequen-
cy of the crystal oscillator inside the DC controller. Since fluctuations in the frequency of the power
supply affects the rotation speed of the main motor (Ml) but not the scanner motor, such fluctua-
tions can lead to expanded or contracted images.
Scanner home position
Lens home position
Main motorclock
Pick-up unit paper detection p&
Delivery unit paper detection (Photo I
interrupter)
Delivery unit open/
waste tonerdetection
(thermistor1 ,
(solemd)
+- LA
, 0
ilamp)
I
Pick-up clutch solenoid
Registration clutch solenoid
Lens solenoid
Blank shutter salenold
Pre-conditioning exposure lamp
Blank exposure lamp
Fixing heater
Main motor
Figure 3-2
-.
3-2 COPYAIMIT Cl966 CANON INC. CANONHP-IOIO AN.0 DEC. 1988 PRINTEDIW JAPAN[IMPRIME AU JAPOII