It is the reader's responsibility when discussing the information contained within this
document to maintain a level of confidentiality that is in the best interest of Ricoh
Corporation and its member companies.
NO PART OF THIS DOCUMENT MAY BE REPRODUCED IN ANY
FASHION AND DISTRIBUTED WITHOUT THE PRIOR
PERMISSION OF RICOH CORPORATION.
All product names, domain names or product illustrations, including desktop images,
used in this document are trademarks, registered trademarks or the property of their
respective companies.
They are used throughout this book in an informational or editorial fashion only and for
the benefit of such companies. No such use, or the use of any trade name, or web
site is intended to convey endorsement or other affiliation with Ricoh products.
2000 RICOH Corporation. All rights reserved.
Page 7
Page 8
WARNING
The Service Manual contains information regarding
service techniques, procedures, processes and
spare parts of office equipment distributed by
Ricoh Corporation. Users of this manual should be
either service trained or certified by successfully
completing a Ricoh T echnical Training Program.
Untrained and uncertified users utilizing
information contained in this service manual to
repair or modify Ricoh equipment risk personal
injury, damage to property or loss of warranty
protection.
1. Before disassembling or assembling parts of the printer and peripherals,
make sure that the power cord is unplugged.
2. The wall outlet should be near the copier and easily accessible.
3. If any adjustment or operation check has to be made with exterior covers
off or open while the main switch is turned on, keep hands away from
electrified or mechanically driven components.
HEALTH SAFETY CONDITIONS
1. If you get ink in your eyes by accident, try to remove with eye drops or
flush with water as first aid. If unsuccessful, get medical attention.
2. If you ingest ink by accident, induce vomiting by sticking finger down
throat or by giving soapy or strong salty water to drink.
OBSERVANCE OF ELECTRICAL SAFETY STANDARDS
1. The printer and its peripherals must be installed and maintained by a
customer service representative who has completed the training course
on those models.
SAFETY AND ECOLOGICAL NOTES FOR DISPOSAL
1. Dispose of replaced parts in accordance with local regulations.
2. Used ink and master should be disposed of in an environmentally safe
manner and in accordance with local regulations.
-- CAUTION --
The RAM pack has a lithium battery which can explode if handled
incorrectly. Replace only with same RAM pack. Do not recharge or burn
this battery. Used RAM packs must be handled in accordance with local
regulations.
Page 26
Page 27
OVERALL MACHINE INFORMATION
PRIPORT CONTROLLER INSTALLATION GUIDE
DETAILED SECTION DESCRIPTIONS
PRIPORT CONTROLLER USER’S GUIDE
INSTALLATION
TAB POSITION 1
TAB POSITION 2TAB POSITION 3TAB POSITION 4
SER VICE T ABLES
REPLACEMENT AND ADJUSTMENT
TROUBLESHOOTING
TAPE MARKER C532
TAB POSITION 5TAB POSITION 6
DOCUMENT FEEDER C532
TAB POSITION 7
TAB POSITION 8
Page 28
Page 29
OVERALL MACHINE
INFORMATION
Page 30
Page 31
1. SPECIFICATIONS
Configuration:Desk top
Master Processing: Digital
Printing Process:Fully automatic one-drum stencil system
Original Type:Sheet/Book
Original Scan Area
Image Mode:Line/Photo/Sharpen
Zoom:From 50% to 200% in 1% steps
Color Printing:Drum unit replacement system (red, blue, green and brown)
Master Feed/Eject: Roll master automatic feed/eject
Leading Edge
Margin:
Print Paper Size:Maximum:325 mm x 447 mm (12.7" x 17.5")
N.America)
220/240 V, 50 Hz, 2.1 A
(for Europe, Asia)
120 V, 60 Hz, 374 W (for
N.America)
220/240 V, 50 Hz, 380 W
(for Europe, Asia)
Cabinet: 23.5 kg (51.8 lb)
2
to 209.3 g/m2 (12.5 lb to 55.6 lb)
2
, 20 lb)
2
, 20 lb)
Overall
Machine
Information
SM1-1C218
Page 32
Dimensions
(W x D x H):
Original Scanning
Time:
Pixel Density:400 dpi
Master Eject Box
Capacity:
Paper Separation:Friction roller/center separation
Feed Table Side
Plate Movement
Distance:
Paper Feed Roller
Pressure:
Separation Roller
Pressure:
Separation Plate
Pressure:
Side Registration:
Vertical
Registration:
Paper Table
Raising/Lowering
Speed:
Ink Supply:Automatic ink supply system
Press Roller
Pressure:
Paper Delivery:Air knife/vacuum delivery
Delivery Side Plate
Movement
Distance:
Print Counter:7 digits
Noise Emission:Less than 74 dB
Stored: 719 x 698 x 644 mm
(28.3" x 27.5" x 25.4")
Set up: 1331 x 698 x 644 mm
(52.4" x 27.5" x 25.4")
Cabinet: 1331 x 698 x 1070 mm
(52.4" x 27.5" x 42.1")
3 ms/line
50 masters with "L" drum
90 masters with "S" drum
system
88 mm to 336 mm (3.46" to 13.2")
Normal position 300 g
Thick paper position 600 g
Normal position 125 g
Weak position 50 g
Weak 10 g
Normal 20 g
Strong 1 40 g
Strong 2 60 g
±
10 mm
±
20 mm
22 mm/s (50 Hz)
26 mm/s (60 Hz)
12.5 ± 0.5 kg
80 mm to 327 mm (31.5" to 12.9")
Printing (Average):
60 rpmless than 64 dB
90 rpmless than 67 dB
120 rpmless than 72 dB
C2181-2SM
Page 33
Supplies:Master
Thermal master 320 mm width
225 masters/roll
Master length 540 mm/master
Max run length 2000 prints
Ink
800 cc ink pack (black)
500 cc ink pack
(red, blue, green, brown)
Overall
Machine
Information
SM1-3C218
Page 34
2. GUIDE TO COMPONENTS
Original Holder
A convenient place for
holding originals while
operating the mach i ne .
Platen Cover
Lower this cover over
an original before
printing.
Original Table Release Lever
Use to open the original table
unit when installing the master.
Feed Roller Pressure
Lever
Use to adjust the contact
pressure of the paper feed
roller according to paper
thickness.
Separation Roller
Pressure Levers
Use to adjust the
separation roller
pressure to prevent
double feed.
Paper Feed Table
Set blank paper on this
table for printing.
Front Door
Open for access to
the inside of the
machine.
Paper Feed Table
Down Key
Press to lower the
paper feed table.
Paper Feed Side
Plates
Use to prevent pa pe r
skew.
Side Plate Fine
Adjustment Dial
Use to shift the
paper feed table
sideways
C2181-4SM
Page 35
Master Eject Unit Open
Button
Press to remove misfed
paper or a misfed master.
Main Switch
Use to turn the
power on or off.
Master Eject
Container Cover
Open when removing
the master eject box.
Paper Delivery
Side Plates
Use to align the
prints on the
paper delivery
table.
Paper Delivery End
Plate
Use to align the
leading edge of prints
larger than A4, 8
1/2
" x
11".
Small Size Paper Delivery
End Plate
Use to align the l ea di n g ed ge
of prints that are A4, 8
1/2
" x
11" or smaller.
Original Table
Place the origina l s
on this table.
Master Cut Button
Press this button to cut
the master paper
leading edge after
installing a new master
roll.
Pressure Release
Lever
Use to install the
master roll.
Operation Panel
Operator controls
and indicators ar e
located here.
Drum Rotation
Button
Press to replace
the drum.
Drum Unit Lock
Lever
Lift to unlock and
pull out the drum
unit.
Drum Unit
The master is wrapped
around this unit.
Overall
Machine
Information
Paper Delivery Table
Completed prints are
delivered here.
SM1-5C218
Ink Holder
Set the ink cartridge in
this holder.
Page 36
3. OPERATION PANEL
– Keys and Indicators –
543 21
678910 111213
1. Reset keyPress to reset error indicators.
2. Directional
Magnification key
3. Image Shift keyPress to shift the image.
4. Contrast keyPress to select the desired contrast according to
5. Screen keyPress to select the desired grade of screening to
6. Make Up keyPress to use the make-up function.
7. Combine 2 Originals
key
8. Im age Density keyPress to make prints darker or ligh te r.
9. Image Mode keyPress to select line mode, photo mode or sharpen
10. Zoom keysPress to alter the reproductions ratio in 1%
11. Reduce/Enlarge key Press to reduce or enl ar g e th e im ag e.
12. Full Size keyPress to make prints the same size as the original.
Press to enter the horizontal or vertical
magnification for copies, using the number keys.
the type and quality of the original.
be applied to the image according to the type and
quality of the original.
Press to combine two originals onto one print
image.
image mode according to the type and quality of
the original.
increments from 50 % to 200 %.
13. Auto Cycle keyUse to automatically pro c ess mast er s an d m ake
prints.
C2181-6SM
Page 37
1817161514
192021 2223 24 25 262728
Overall
Machine
Information
14. Clear Modes key
15. Program key
16. Enter key
17. Counter
18. Monitors
19. Speed keys
20. Image Position key
21. Memory/Class
Indicators
22. Number keys
23. Memory/Class key
24. Clear key
Press to cancel all previously ent ered settings and
modes.
Press to input or recall user programs.
Press to input information into memory.
Displays the number of prints entered. While
printing, it shows the number of copies left to print.
Light or blink when a non-standard condition
occurs within the machine.
Press to adjust the rot at ion spee d of the drum
according to the type of image and printing paper.
Press to shift the image forwards or backwards on
the print paper.
Shows the number entered in memory mode or
class mode.
Press to enter the number of prints.
Press to select group printing in memory mode or
class mode.
Press to change the number set in the counter.
Also use to change make-up mode. This key can
be used only after the machine stops operation.
25. Stop key
26. Proof key
27. Print Start key
28. Master Making key
SM1-7C218
Press to stop the machine operation. The
machine will continue operation when the Print
Start key or Master Making key is pressed.
Press to make trial prints or extra prints.
Press to start printing.
Press to make a master.
Page 38
4. PRINTING PROCESS
3
2
4
1
6
7
5
1. Master Ejecting:Ejects the used master that was wrapped
around the drum i nt o th e m ast er eje c t bo x.
2. Original:The original is placed onto the exposure glass.
3. Scanning:Scans the original image with the CCD through
the mirrors and the lens while moving the lamp
across the original.
4. Master Feeding:Converts the imag e sign al r ea d by th e CC D
into digital signal s an d sen ds th em to the
thermal head to plo t ho les on the ma ste r. The
new master is the n wr ap pe d ar o un d th e dr u m .
5. Paper Feeding:Feeds the paper to the drum section.
6. Printing:Presses the paper fed from the paper feed
section against the dr u m . This tr a nsf er s th e i nk
through the dru m scre en , th e m ast er an d on to
the paper.
7. Paper Delivering:Peels the printed paper off the drum with the
exit pawl and air knife and ejects the paper
onto the paper delivery table.
C2181-8SM
Page 39
5. MECHANICAL COMPONENT LAYOUT
30
29
28
27
26
25
24
23
3231
20
2122
19
123456
18
17
141516
13
7
8
9
10
11
12
Overall
Machine
Information
1. Drum Unit
2. Lens
3. CCD
4. Reverse Roller
5. Master Feed Roller
6. Platen Roller
7. Thermal Head
8. Master Roll
9. Plotter Unit
10. Upper Separation Roller
11. Paper Feed Roller
12. Paper Table
13. Separation Plate
14. Lower Separation Roller
15. 2nd Feed Roller
16. Doctor Roller
17. Press Roller
18. Ink Roller
19. Paper Exit Pawl Air Pump
20. Paper Exit Pawl
21. Transport Unit
22. Paper Delivery Table
23. Master Eject Box
24. 2nd Eject Roller
25. 1st Eject Roller
26. Master Eject Unit
27. 3rd Mirror
28. 1st Mirror
29. 2nd Mirror
30. Reflector
31. Fluorescent Lamp
32. Exposure Glass
SM1-9C218
Page 40
6. ELECTRICAL COMPONENT LAYOUT
35
3333
31
34
32
37
36
30
40
39
29
27
6
9
8
7
38
1
2
3
24
4
5
10
11
12
13
15
14
28
26
25
23
22
21
20
19
17
16
18
C2181-10SM
Page 41
1. Scanner Motor
2. Fluorescent Lamp Stabilizer
3. CCD PCB
4. Platen Cover Position Sensor
5. A/D Conversion PCB
6. Original Sensor
7. ADF Set Sensor
8. Scanner Home Position Sensor
9. Fluorescent Lamp
10. Scanner Unit Safety Switch
11. Paper Return Motor
12. Paper Table Down Button
13. Paper End Sensor
14. Paper Width Sensor
15. Paper Table Open Switch
16. Paper Table Safety Switch
17. Paper Detection PCB
(Paper Length Sensor)
18. Cassette Size Detection PCB
19. Paper Table Height Sensor
22. Transformer
23. Paper Table Lower Limit Sensor
24. Main PCB
25. Printing Pressure Sensor
26. Front Door Safety Switch
27. Power Supply Unit
28. Vacuum Fan Motor
29. 1st Paper Exit Sensor
30. Drum Detection Switch
31. 2nd Paper Exit Se nsor
32. Circuit Breaker
33. Delivery Table Open Switch
34. Main Switch
35. Interlock Switch
36. Air Knife Motor Safety Switch
37. Drum Rotation Switch
38. Drum Rotati on LED
39. Total Counter
40. Operation Pa ne l
Overall
Machine
Information
20. Image Processing PCB
21. Separation Plate Release
Solenoid
SM1-11C218
Page 42
58
60
45
62
63
64
56
61
57
59
55
54
53
52
51
50
49
48
44. Ink Supply Solenoid
45. Drum Lock Solenoi d
46. Master Eject Unit Safety Switch
47. 2nd Drum Positio n Se nso r
48. Noise Filter
49. Printing Pressure Solenoid
50. Main Motor
51. Drum Rotati on Sensor
(Pulse Generator)
52. Paper Table Drive Motor
44
46
47
55. AC Drive PCB
56. Master Eject Clamper Solenoid
57. Image Position Sensor
58. Master Feed Clamper Solenoid
59. Ink Detection PCB
60. Master Cut Button
61. Image Positioning Motor
62. Drum Unit Safety Switch
63. 1st Drum Position Sensor
64. Drum Master Det ect i on Sens or
53. Paper Table Drive Motor
Capacitor
54. Paper Feed Solenoid
C2181-12SM
Page 43
81
77
76
78
79
75
74
80
82
65
66
69
70
71
67
68
Overall
Machine
Information
73
65. Pressure Plate Motor
66. Lower Pressure Plate Sensor
67. Upper Pressure Plate Sensor
68. Full Master Detection Sensor
69. Master Eject Senso r
70. Master Eject Sol en oid
71. Air Knife Motors
72. Master Eject Box Switch
73. Master Eject Mot or
74. Thermal Head Drive PCB
72
76. Cutter Motor
77. Master End Senso r
78. Right Cutter Switch
79. Thermal Head
80. Master Buckle Senso r
81. Master Feed Motor
82. Left Cutter Switch
SM1-13C218
Page 44
7. ELECTRICAL COMPONENT DESCRIPTIONS
Index No.NameFunction
Motors
* ADF
option
11Paper Return MotorReturns paper to the paper table when
28Vacuum Fan MotorProvides suction so paper is held firmly
Original Transport
Motor
Transports the original to the scanner
section.
the paper table is lowered.
on the transport belt.
* ADF
option
50Main MotorDrives paper feed, drum, pr i nt ing and
52Paper Table Drive
61Image Positioning
65Pressure Plate Motor Raises and lowers the pressure plate.
71Air Knife MotorsRotates the fan to separate the paper
73Master Eject MotorSends used master into the master
76Cutter MotorC uts the master.
81Master Feed MotorFeeds the mast er to the drum .
1Scanner MotorTransports the lamp across the original
Solenoids
21Separation Plate
44Ink Supply SolenoidReleases the spring clutch to turn on
45Drum Lock SolenoidPrevents the drum unit from being
ADF Drive MotorFeeds the original to the scanne r
section.
paper delivery unit components.
Raises and lowers the paper table.
Motor
Changes the timing between the paper
Motor
Release Solenoid
feed roller and the drum to adjust the
vertical image po siti o n.
leading edge fr om th e dr u m .
eject box.
Releases the separation plate when the
paper table is lo w ered.
activate the ink supply pump.
removed during the printi ng run.
49Printing Pressure
Solenoid
54Paper Feed Solenoid Releases the sector gears to feed the
56Master Eject
Clamper Solenoid
* ADF Option - Refer to Section 8.
C2181-14SM
Engages the pressure ON/OFF lever
when a paper misfeed occurs.
paper.
Opens the master clamper to eject the
master.
Page 45
Index No.NameFunction
58Master Feed
Clamper Solenoid
70Master Eject
Solenoid
Opens the master clamper to clamp the
master.
Presses the lower master eject roller
against the drum surface.
Sensors
*ADF
option
Original Registration
Sensor
Informs the CPU when the original
activates the sensor. Also, detect s the
original misfeed.
*ADF
option
Scan Line SensorInforms the CPU when the original
activates the sensor. Also, detect s
original misfeeds.
*ADF
option
*ADF
option
Original Exit SensorInforms the CPU when the original exits
the ADF.
Original Width
Informs the CPU of the original width.
Sensor
13Paper End Senso rInforms the CPU if the paper is set on
the paper table.
14Paper Width SensorInforms the CPU of the paper width.
19Paper Table Height
Sensor
Informs the CPU if the paper table is at
the paper feed position.
Overall
Machine
Information
23Paper Table Lower
Limit Sensor
25Printing Pressure
Sensor
291st Paper Exit
Sensor
312nd Paper Exit
Sensor
472nd Drum Positio n
Sensor
51Drum Rotat i on
Sensor
57Image Position
Sensor
631st Drum Position
Sensor
* ADF
ADF Cover SensorDetects when the ADF cover is opened.
option
Informs the CPU if the paper table is at
the lowest position.
Informs the CPU if printing pressure is
applied. Also, detects paper misfeeds.
Detects paper misfeeds.
Detects paper misfeeds.
Checks the position of the drum.
Supplies timing pulses to the CPU
based on the main motor speed.
Informs the CPU of the image position.
Checks the position of the drum.
* ADF Option - Refer to Section 8.
SM1-15C218
Page 46
Index No.NameFunction
* ADF
option
4Platen Cover
64Drum Master
66Lower Pressure
67Upper Pressure
68Full Master
Original Set SensorDetects when an original is inserted
into the ADF
Detects when the platen cover is
Position Sensor
opened more than 25°
Informs the CPU if the master is on the
Detection Sensor
drum.
Informs the CPU if the pressure plate is
Plate Sensor
at the lower limit position.
Informs the CPU if the pressure plate is
Plate Sensor
at the upper limit position.
Informs the CPU when the master eject
Detection Sensor
box is full of masters.
69Master Eject SensorDetects used master misfeeds.
77Master End SensorInforms the CPU if the plotter unit runs
out of master roll.
80Master Buckle
Sensor
Informs the CPU if the master is
buckling.
Switches
9Scanner Unit Safety
Switch
Cuts off the power line of the main and
paper table drive motors when the
scanner unit is open.
12Paper Table Down
Button
Informs the CPU to turn on the paper
table drive motor to lower the paper
table.
15Paper Table Open
Switch
Checks whether the paper table is
opened correctly or not.
16Paper Table Safety
Switch
Stops lowering the paper table to
prevent catching fingers under it. Cuts
the AC power line.
26Front Door Safety
Switch
Cuts off the power line of the paper
table drive motor when the front door is
open.
30Drum Detection
Switch
33Delivery Table Open
Switch
Checks whether the drum unit is set
correctly or not.
Checks whether the delivery table is
opened correctly or not.
34Main SwitchTurns the power on or off.
* ADF Option - Refer to Section 8.
C2181-16SM
Page 47
Index No.NameFunction
35Interlock SwitchDisables the front door, paper table,
master eject unit, and scann er un it
safety switches.
36Air Knife Motor
Safety Switch
Cuts off the power line of the paper
table drive motor whe n th e m ast er ej e ct
unit is open.
37Drum Rotat i on
Switch
Informs the CPU to rotate the drum at
10 rpm.
Overall
Machine
Information
*ADF
option
46Master Eject Unit
ADF Safety SwitchCuts the power line of the paper table
drive motor off when the ADF is open.
Cuts off the power line of the paper
Safety Switch
table drive motor whe n th e m ast er ej e ct
unit is open. (Also, cuts off the power
line of the main motor in the 220/240 V
version machines.)
60Master Cut ButtonInforms the CPU to cut the master
paper leading edge.
62Drum Unit Safety
Switch
72Master Eject Box
Switch
Checks whether the drum unit is set
correctly or not.
Checks whether the master eject box is
set correctly.
78Right Cutter SwitchDetects when the cutter position is far
right (non-operation side).
82Left Cutter SwitchDetects when the cutter position is far
left (operation side).
*ADF
ADF Set SwitchDetects when the ADF unit is opened
option
Printed Circuit Board
3CCD PCBConverts light intensity into an electrical
signal.
5A/D Conversion PCB Converts the analog signal into a digital
signal.
17Paper Detection
PCB
18Cassette Size
Detection PCB
20Image Processing
PCB
Detects the size of the paper set on the
table.
Detects the size of the cassette set on
the table.
Controls the image proces sing
performance.
24Main PCBControls all machine functions both
directly and throu gh other boards.
55AC Drive PCBControls the AC component by relays.
* ADF Option - Refer to Section 8.
SM1-17C218
Page 48
Index No.NameFunction
59Ink Detection PCBControls the ink supply.
74Thermal Head Drive
PCB
Supplies the power to t he the rm al he ad
according to the signal from the
scanner section.
Counters
39Total CounterKeeps track of the total number of
prints made.
Others
2Fluorescent Lamp
Stabilizer
Stabilizes the power supplement to the
fluorescent lamp.
22TransformerSteps down the wall voltage.
27Power Supply UnitProvides power for all DC components.
32Circuit BreakerCuts the AC line off.
38Drum Rotat ion LEDTurns to green fr om r ed wh en the dr um
stops to the home po sition.
9Fluorescent LampApplies light to the original for exposure.
48Noise FilterFilters electrical noise on the AC power
input lines.
53Paper Table Drive
Motor Capacitor
75Reverse Roller
Magnetic Clutch
Protects the AC drive PCB from
induced current.
Stops the reverse roller turning while
the master buckle sensor i s OFF.
79Thermal HeadPlots the master usin g he at .
C2181-18SM
Page 49
8. DRIVE LAYOUT
20
19
18
17
16
21
1
2
Overall
Machine
Information
3
4
5
6
7
8
9
15
1. Scanner Belt
2. Scanner Motor
3. Image Position Motor
4. Master Eject Motor
5. Drum Drive Gear
6. Drum Unit Gear
7. Drum Drive Pulley
8. Main Drive Belt
9. Transport Belt
10. Printing Pressure Pulley
11. Printing Pressure Gear
14
13
12. Idle Gear
13. Idle Pulley
14. Main Motor
15. Paper Table Drive Motor
16. Paper Feed Cam Gear
17. Master Feed Motor
18. Timing Belt
19. Platen Roller Gear
20. Master Transport R olle r Gea r
21. Reverse Roller Gear
12
11
10
SM1-19C218
Page 50
Page 51
DETAILED SECTION
DESCRIPTIONS
Page 52
Page 53
1. MASTER EJECT SECTION
1.1 OVERALL
At the end of the printing cycle, th e use d mast er rema ins wrap pe d aro und
the drum to prevent the ink on the drum surface from drying. When the
Master Making key is pressed to make a new master, the used master is
then ejected from the drum.
The master is pulled off the drum, by the eject rollers and is fed into the
master eject box. A pressure plate compacts the used master.
[A]
•
Drum [B] rotates in reverse
(opposite to printing direction).
•
Master eject rollers [A] rotate.
[C]
•
[B]
Lower eject roller [C] is pressed
against the drum .
[E]
[D]
•
The trailing edge of the master
Drum
[F]
curls off the drum and pass es
between the uppe r [E] and lower
[F] eject rollers, and the master [D]
is dumped into the master eje ct
[G]
box [G].
Detailed
Section
Descriptions
SM2-1C218
[H]
[I]
•
The pressure plate [H] compacts
the ejected master [I].
Page 54
1.2 MASTER EJECT ROLLER ROTATING MECHANISM
[I]
[J]
[H]
[G]
[A]
[B]
[E]
[F]
[B]
[C]
[D]
[E]
[F]
When the original i s set an d th e Mast er M akin g key is presse d, the mai n
motor starts turning at 30 rpm in the reverse direction. The drum will rotate in
the reverse direction (ccw ) (compared with the printing rotations).
At this time, if the drum m ast er de tection sensor detects a mast er on the
drum, the master eject motor [A] starts rotating . Drive is transmitted to gear
[E] and to the uppe r fir s t eje c t r oll e r s [G] through the timin g belt [B] and gears
[C] and [D]. Gear [F] drives the lower first eject rollers [H]. The belts [I]
transmit drive from th e fi rs t ej ect rol l ers to t he upp er an d low e r second fe ed
rollers [J].
(If the drum master detection sensor detects no master on the drum when
the Master Making key is pressed, the machine skips the master eject
process and goes directly to the master making process.)
After the master eje c t pro c ess is com ple te d, the dr um r et urn s to i ts ho me
position. The master eject rollers then stop rotating.
The model VT3600 has five rollers on each eject roller shaft. The roller shafts
can feed up to A3/DLT sized masters.
C2182-2SM
Page 55
1.3 MASTER EJECT ROLLER DRIVE MECHANISM
[A]
[B]
[E]
[F]
[G]
[D]
[C]
Detailed
Section
Descriptions
[H]
The drum position is dete cte d by th e fi rs t [G] and secon d [H] dr um po si tio n
sensors. When the drum reaches its home position, the first drum position
sensor [G] is activated by the interrupter [F] at the rear side of the drum.
To eject the master, the drum turns in the reverse direction (CCW) (oppos ite
to the printing direct ion). When the drum is 70° from the home position, the
master eject solenoid [A] turns on and the supporter [C] rotates
counterclockwise on the upper eject roller shaft [D]. This forces the lower first
eject rollers [E] against the drum surface.
The drum will momentarily stop its reverse rotation for 150 milliseconds,
when the trailing edge of the master is about 5 millimeters from the master
rollers to ensure the com p l et ion of th e m ast er eje c t pro c ess.
As the drum turns, the curled trailing edge of the master [B] passes between
the upper and lower first eject rollers. The first eject rollers then peel the
master from the dr u m .
SM2-3C218
Page 56
[A]
[B]
[C]
[D]
When the drum is 109 degrees from the home position, the master eject
solenoid [A] turns off, separating the lower first eject rollers [C] from the
surface of the drum.
When the ejected master passes between the upp er and lower first eject
rollers, the master eject sensor [B] is actuated. The master is then dumped
into the master eject bo x [D].
C2182-4SM
Page 57
1.4 MASTER EJECT CLAMPER MECHANISM
[G]
[F]
Rear side of
machine
[B]
[A]
[E]
Detailed
Section
Descriptions
[C]
When the drum rot at es 30 6 de gr e es ( in th e r eve r se di r e ctio n) pa st th e home
position, the master eject clamper solenoid [A] turns on and lever [B] will
rotate counterclockwise as shown. This moves the cam [D] inside the drum.
The drum rotation will bring the clamper sector gear [E] against the cam [D].
Gear [F] will rotate counterclockwise as it engages the clamper sector gear,
thus opening the master clamper [G]. The opened master clamper will
releases the master from the drum.
The drum will continue to turn until the interrupter at the rear side of the drum
moves 13 degrees past the first drum position sensor. The main motor will
then turn off. Half a second later, the master eject clamper solenoid [A] turns
off and spring [C] pulls cam [D] back to its init ial position. The drum then
rotates forward to its home position.
[D]
SM2-5C218
Page 58
1.5 PRESSURE PLATE UP/DOWN MECHANISM
[B]
[M]
[C]
[L]
[D]
[A]
[K]
[I]
[J]
[Pressure Plate Down]
When the interrupter at the rear side of the drum interrupts the first drum
position sensor (this means the end of the master eject process), the
pressure plate motor [B] starts rotating. This drives gear [H] clockwise by
means of gears [C], [D], [E], and [F].
Pin [I] on gear [H] moves the link [G ] down until the link interrupter [L]
interrupts the lower pressure plate sensor [J]. Spring [M] pulls down on the
pressure plate and th e ejected master in the master eject box is compressed
by the pressure plate [A].
[E]
[F]
[G]
[H]
If the full master detection sensor [K] does not turn on when the pressure
plate goes down, the master eject box is filled with ejected masters. In this
case, the Master Full indicator will blink, and the machine will stop after a
new master is wrapped around th e drum.
Reset the Master Full indicator by turning the Master Eject Box switch OFF
and ON (Remove and insert this box). This will prevent the master full
indicator from being reset without removing the ejected masters from the
box. When the Master Full indicator is blinking, the Master Making key will
not work, but the Print Start key and Proof key function correctly.
C2182-6SM
Page 59
[A]
[B]
[G]
[C]
[D]
[F]
[E]
[Pressure Plate Up]
When the master has been wrapped around the drum in the master making
process and the master cutter leaves the home position to cut the master,
the pressure plate motor [B] starts rotating to raise the pressure plate.
When the pressure plate motor [B] turns, the gear [C] is driven through the
relay gears. The pin [F] on the gear in the link [D] rises and lifts the left end of
the link, thus raisin g th e pr e ssur e plate.
The gear [C] continues turning until the interrupter [G], which is installed onto
the front end of the pressure plate, blocks the upper pressure plate sensor
[A]. At this time, the master eject motor [B] will stop and the pressure plate
will be held in the upper position.
Detailed
Section
Descriptions
[Pressure Plate Motor Lock Detection]
To prevent the pressure plate motor from locking the error indicator, "E-12"
will light up on the operation display panel if any of the following conditions
occur:
1. The upper [A] or lower [E] pressure plat e sen sor rem a i ns act ivated for
more than 4 seconds after th e pr e ssur e plat e m ot or sta rts tu r nin g.
2. The lower pressure plate sensor [E] is not activat ed wit hi n 8 secon ds of
the pressure plate motor starts turning even though the upper pressure
plate sensor [A] is de- act iv at ed .
3. The upper pressure plate sensor [A] is not activated within 8 seconds of
the pressure plate motor starts turning even though the lower pressure
plate sensor [E] is de- act iv at ed .
SM2-7C218
Page 60
1.6 ELECTRICAL TIMING
T1
First Drum Position Sensor
Second Drum Position Sensor
pressed, the main motor and
master eject motor will start turning.
At the same time, the paper table
drive motor will start to lift the paper
table to the paper f ee d po siti o n.
T2: When the drum rotates X1 degrees
past the first drum po siti o n sen sor
actuation positio n (dr u m home
position), the mast er eject solenoid
is energized. This will press the
lower eject rollers against the drum
surface. The master eject solenoid
is de-energized when the drum
rotates X2 degrees more.
306°
X2
T4
13°
30 rpm
T3
500 msec
0°
0°
70°
39°
The drum rotation angles X1 and
X2 depend on the drum type. This
machine has two types of drums:
one is the A3/DLT dru m (st an da r d) ,
and the other is the A4/LT drum
(optional). X1 and X2 for eac h drum
are as follows:
degrees past the home po si tio n, the
master eject clamper sole no i d is
energized.
T4: When the drum rotates 13 degrees
past the drum home position, the
drum stops rotating.
500 milliseconds later (the drum
completely stops during this
period), the mast er eje c t clam p er
solenoid is de-energized and the
drum starts rotating forward. The
drum then returns to its home
position. The master ej e ct process
is now over.
Soon after this, the machine wll
start feeding a new master and the
drum will start rotating in reverse to
begin the master making process.
13°
0°
0°
306°
Detailed
Section
Descriptions
SM2-9C218
Page 62
First Drum Position Sensor
Master Eject Solenoid
Print key on
Misfeed Indicator Lights
39°18°
50°50°
Sensor ON Check
70°
Drum Rotation
ReverseReverse
Master Eject Sensor
Master Eject Motor
68°
Foward
[Master Eject Misf e ed Det e ction]
The misfeed indicator for the master eject section blinks in the following
cases:
Case 1:The master eject sensor is not activated and the drum has turned
50 an additional degrees (still in reverse and after de-activation of
the master eject solenoid). The machine will know that the eject
rollers have failed to catch the master. The dru m re tu rns 68
degrees (by rotating in the forward direction, the printing direc tion)
to repeat the master eje c t pro c ess on e mor e ti me. The m ast er
eject solenoid is agai n ene rgi ze d w hil e the drum tu r ns an ot he r 18
degrees (in the reverse direction) to try to catch the c urled edge of
the master.
If the master ejec t sen sor ag ain fai ls to det ect the master, the drum
will return to its home position and the misfeed indicator will blink.
Case 2:The drum finishes its rotation for th e m ast er eje c tin g pr o cess an d
retuns to the home position, but the master eject sensor does not
turn off. This means that the master is still in between the master
eject rollers, the misfeed indicator will blink.
C2182-10SM
Page 63
1.7 CIRCUIT
[A]
[B]
[C]
[D]
1
2
3
1
2
3
1
2
3
CN101
-24
-23
-22
-27
-26
-25
-30
-29
-28
-17
-16
-19
-18
Main PCB
5V
GND
5V
GND
5V
GND
5V
LED DRIVE
5V
24V
24V
FU101
FU102
GND
CN103
-21
-10
-20
-11
-19
-12
-25
-6
CN101
-20
-21
SOL
M
M
SOL
[E]
[F]
[G]
[H]
[I]
Detailed
Section
Descriptions
Component
Name
Upper Pressure
Plate Sensor [A]
Lower Pressure
Plate Sensor [B]
Full Master Detection
Sensor [C]
In/OutMain PCBDescription
CN No.Signal Level
In101-23Signal goes High when the pressure
0V
In101-26Signal goes High when the pressure
0V
5V
plate is at the highest position.
5V
plate is at the lowest position.
In101-29Signal goes High when the interrupter
5V
0V
of the pressure plate passes through
the sensor. (Master full detection in the
master eject box.)
Master Eject
Sensor [D]
InTP104
101-18
0.7V
Signal goes High when the sensor
3V
detects the master. This is a pulse
signal.
Sensor LED [D]Out101-16Pulse signal goes to Low and the LED
Master Eject So-
Out103-10Signal goes Low when the solenoid
lenoid [E]
Master Eject Mo-
Out103-11Signal goes Low when the motor turns
tor [F]
Pressure Plate
Out103-12Signal goes Low when the motor turns
Motor [G]
Master Eject
Out103- 6Signal goes Low when the solenoid
Clamper Sole-
5V
3.5V
24V
24V
24V
24V
3 msec
lights when the main switch is turned
600
µ
sec
on.
0V
turns on.
0V
on.
0V
on.
0V
turns on.
noid [H]
Master Eject
Box Switch [I]
In101-20Signal goes Low when the master eject
5V
0V
box is installed.
SM2-11C218
Page 64
2. SCANNER
2.1 OVERALL
A book type scanner is used in the model VT3600. There are 2 modes for
scanning originals.
Platen Cover Mod e: The ori g i nal is pla c ed on th e exp osu re gl a ss, an d th e
scanner motor drives the scanner to across the original.
Optional ADF Mode: Wh en an op tio na l Docum e nt Feed er is insta l led , th e
original is fed across the exposure glass. The scanner move s 24 mm away
from the CCD and then remains still as it scans the original. The scanner will
return to the home positio n when the scanning is finished.
[I]
[H]
[G]
[F]
[E]
The light from the fluorescent lamp [A] is reflected from the original, by the
first [B], second [F], and third [E] mirrors and goes through the lens [D] into
the CCD [C].
In the Platen Cover Mode, the CCD measures the reflector light off the white
plate [H] on the back of the original scale [I] each time before scanning to
obtain a standard white level before the original is scanned. The standard
white level data is used to correct distortion. The scanner is in the home
position when it measures the white level.
[A]
[C]
[B]
[D]
[G]: Reflector
In the ADF mode, as the scanner moves 24 mm, the CCD will then measure
the white plate installed on the ADF.
C2182-12SM
Page 65
[A]
[B]
[C]
[F]
[D]
[E]
[Light Source]
A high frequency (15 kHz) fluorescent lamp [D] is used as a light source for
high speed reading. The light is reflected off the original at two angles, direct
and reflected. The reflector mirror [F] is used to prevent shadows from the
edges of cut-and-paste originals from appearin g as lines on the printed
copies. The original guide plate [C] blocks part of the direct light from the
fluorescent lamp to ensure that the light intensity of both the direct light and
reflected light the same. A heater [E] is wrapped around the fluorescent
lamp. The lamp will turn on for one minute when the main switch is turned on
to quickly raise the lamp temperature. This will prevent a loss in light intensity
that would occur if the lamp temperature were too low.
Detailed
Section
Descriptions
[Platen Cover]
The CCD reads the reflected light off the platen cover [A] to obtain a
standard white level before the original is read. The standard white data are
used to correct for distort ion such as bright or dull spots in the light path
(lamp, reflectors, exposure glass, mirrors, lens, and CCD).
SM2-13C218
Page 66
Fluorescent
Lamp
Original
Scanning
Signal
CN601
-A13
Main PCB
[Lamp Heater]
+5V
+24V
4.3K
TH601
110K
[B]
[A]
24K
A/D Conversion PCB
Q605
10K
5
6
CN608
-1
18K
[D]
-2
+
7
_
IC
Q602
-3
[C]
-4
Lamp
Heater
The thermistor [C] mounted in the lamp heater is used to maintain the lamp
temperature at about 40°C.
If the lamp temperature drops too low, the voltage at [B] goes High. The
resistance of thermistor [C] will increase, causing the voltage at IC-pin 7
(operational amplifier) to go High. Q602 will then turn on and the lamp heater
[D] is energized. As the lamp temperature rises, the voltage at [B] will
become less than that at IC-pin 6, causing IC-pin 7 to go Low, which will turn
off the lamp he at er .
Thermistor TH601, located on in the A/D conversion PC B, mo nit or s th e
temperature inside the machine. If the temperature is low, the increased
resistance of TH601 dro ps th e voltage at [A] and the contr ol te m pe rature of
the heater thermistor (heater ON/OFF temperature) is raised slightly. If the
temperature is high, the control temperature is lowered slightly.
If Q605 turns on, the voltage at [B] becomes 0 volt and the lamp heater turns
off. Q605 is turned on when the original scanning signal (active low) is sent
from the main PCB. Consequently, the heater is always off during the original
scanning process.
C2182-14SM
Page 67
[A]
[B]
[C]
[Lens]
The lens assembly [B] consists of 6 lenses to transfer the image to the
photoelectric elements of the CCD. It is possible to adjust the focus by
moving the lens assembly.
[Shading Plate]
Compared with the ends, the middle of the lamp is too bright. To correct this,
a shading plate [A] is placed in front of the lens. The shading plate will block
some of the light in the center to distribute it more uniformly, across the CCD.
Detailed
Section
Descriptions
[CCD (Charge Coupled Device)]
The CCD [C] is a solid-state device similar to a photodiode array, but unlike a
photodiode array, a CCD can read one complete scan line at a time. The
CCD produces an analog signal which is converted into a digital signal in the
A/D conversion PCB.
SM2-15C218
Page 68
2.2 SCANNER MECHANISM
[C]
[Rear Side]
[A]
[B]
[Front Side]
[E]
[D]
[F]
[G]
A stepper motor is used as the scanner motor [A] to drive both scanners. The
first scanner [B], which consists of the exposure lamp and the first mirror, is
driven by the first scann er belt [F]. The second scanner [C], which consists of
the second and the thir d m ir r or, is driven by the second scanner be lt [D ] .
Both scanners move along the guide rails.
The timing belt [G] moves the second scanner at half the speed of the first
scanner. This is to maintain the focal distance between the original and the
lens during scanning .
The scanner home position is de te cte d by th e ho me po si tio n sen sor [E ]. In
the Platen Cover Mode, the scanner scans the original on the exposure glass
for the full A3 length, then returns until the scanner home position sensor is
activated. In the ADF Mode, the scanner moves 24 mm backwards (awa y
from the CCD), to scan the original which is fed by the ADF. When the
master making process is finished and the ADF motor sto ps, the scann er is
returned to the home position.
C2182-16SM
Page 69
2.3 PLATEN COVER POSITION DETECTION
[B]
[A]
Detailed
Section
Descriptions
When the platen cover is op ened about 25 degrees, the Platen Cover
Position Sensor [A] is deactivated. When this sensor is deactivated, the
Original Sensor [B] is able to detect the original on the exposure glass.
When the Platen Cover Position Sensor is deactivated and the Original
Sensor detects no original on the exposure glass, the machine indicates
"SET THE ORIGINALS" on the operation display. This is to preve nt wasting
of the master that would occur when the Mast er Makin g key is pressed with
no original placed on the ex posure glass.
The Margin Erase function will erase the shadows around the original. This
function is useful when printing from thick books or similar originals. Margin
erase function is also enabled when the Margin Eras e key is pressed. When
this key is pressed, the ma chin e er a ses m ar g in th at is sho w n on the
operation displa y di sr eg ard i ng of ho w much the platen cover is opened .
When the original is place d on the expo sur e glass an d th e M ast er M akin g
key is pressed with the platen cover opened more than 25 degrees (as the
Platen Cover Position Sensor is deactivated), the shadow erase function is
enabled.
SM2-17C218
Page 70
Notes regarding the shadow erase function:
•
Margins of 1 mm, 0.02" on all four sides of the original will be erased. The
width of the margins will change depending on the reproduction ratios.
•
Shadows near the book edge might not be erased completely.
•
If the shape of the ori g ina l s are as sho w n be l ow, shadows might appear
on the prints. In this case, make the master with the platen cover closed.
Shadow
Scanning dire ction
•
If a line or solid image is on the margin at the center and at the edges
being erased, the image might be erased as sho wn below.
Scanning dire ction
C2182-18SM
Page 71
2.4 ELECTRICAL TIMING
First Drum
Position Sensor
Second Drum
Position Sensor
Main Motor
Reversing
Scanner Home
Position
Scanner Motor
Scanner Motor
Reversing
Master Feed
Motor
Reverse Roller
Clutch
Master Feed
Clamper Solenoid
160° of Drum Rotation
Buckle Sensor
Main Motor
Advancing
Left Cutter
Switch
Right Cutter
Switch
218.5° of Drum R otation
Plotting Start
Plotting Max.
Scanner HP
To Trial Print
Detailed
Section
Descriptions
Cutter Motor
Cutter Motor
Reversing
a: 21.5 mmb: 0.9 mm
e: 412 mmf: 60 mm
g: 40 mmc: 38 mm
d: 5 mm
T1: After the master eject process is completed, the main motor rotates in the
reverse rotation at 30 rpm. At the same time, the master feed motor and
the reverse roller magnetic clutch turn on to feed the master 21.5
millimeters.
T2: The master feed clamper solenoid is energized when the drum rotates
160 degrees past the seco nd drum po si tio n sen s or. At the same time, the
reverse roller magnetic clutch is turned on and the scanner motor will
start to rotate.
SM2-19C218
Page 72
T3: When the scanner has moved 20 millimeters away from its home
position, the master star t s to be fed . W he n th e mast er ha s bee n fe d 0. 9
millimeters, the thermal head will start to plot (burn) the data onto the
master.
The leading edge is zero when the scanner is 12 millimeters from its
home position. The leading edge margin can be adjusted within the
range of 4 to 10 millimeters by SP mode No.33.
T4: When the master has been fed 38 millimeters, the reverse roller
magnetic clutch will turn off. The master is then fed 5 additional
millimeters and the master feed clamper solenoid is de-energized to
close the master clamper. The original transport and the master feed
motors speed up once the master plotting is completed. The master
feeding lengths for plotting are:
T5: When the scanner has scanned the full scanning length (the same length
as the master feeding length), the scanner motor will start its reverse
rotation to bring the scanner back to the home position.
T6: The master feed motor will stop when the master has been fed 534.4
millimeters. At the same time, the cutter motor will rotate to cut the
master. The cutter motor will change its rotation direction when the cutter
holder pressess against the right cutter switch. The cutter motor stops
when the cutter holder returns back to the home position to activate the
left cutter switch.
When the right cutter switch is activated, the drum will start rotating to
return back to its home position. When the left cutter switch is activated
(when the cutter had returned to its home position), the master feed
motor will turn on again to feed the master 40 millimeters.
T7: When the scanner motor stops its reverse rotation, the scanner motor will
then rotate in the forward direction until the scanner home position
sensor is activated.
The thermal head [B] will burn the image (scanned by the CCD) onto the
master [A] as it is being fed onto the drum [C]. The completed master is
clamped to and wrapped around the drum.
C2182-22SM
Page 75
3.2 MASTER CLAMPER OPENING MECHANISM
[A]
[B]
[D]
[C]
[F]
[H]
[G]
Detailed
Section
Descriptions
[E]
After the master eject process had completed and the interrupter [A] is
positioned in the first drum position sensor [B] (drum home position), the
main motor will turn on and the drum will start rotating (30 rpm) in the reverse
direction (opposite to the printing direction).
When the drum rot at es 16 0 de gr e es pa st th e act ua ti o n po si tio n of the
second drum position sensor [C], the master feed clamper solenoid [D] will
energize and cam [H] will move towards the drum.
When the drum turns another 58.5 degrees, the sector gear [F] will rotate
upwards as it contacts the cam [H]. This will engage the sector gear and
gear [E], which will turn counterclockwise to open the clamper [G]. At the
same time, the drum will stop and the clamper will remain open ready to
clamp onto the leading edge of the master.
SM2-23C218
Page 76
3.3 MASTER FEEDING MECHANISM
[E]
[D]
[C]
[B]
[A]
[F]
[L]
[K]
[J]
[I]
[L]
[M]
[M]
[O]
The drum will rotate 218.5 degrees past the second drum position sensor
and then will stop. At this time, the magnetic clutch [A] located behind the
reverse roller [L] and the master feed motor [H] will turn on. The rotation of
the master feed motor [H] is transmitted to the platen roller [E] through the
belt [G] and the gear/pulley [F]. The platen roller will then feed the master
and press it against the thermal head [K]. Also, the rotation of the gear/pulley
[F] is transmitted to a gear [J] through the relay gear [I] to drive the upper
feed roller [D] and the lower feed roller [C] for feeding the new master.
When the magnetic clutch [A] turns on, the rotation of the upper feed roller
[D] is transmitted to the reverse roller [L] through the relay gears [B], thus
feeding the master. Also, the master is directed down to the clamper [N] of
the drum by the revers e gu ide [O] . The counter rollers [M] are used to
prevent the leading edge of the master from wrapping around the reverse
roller [L].
[N]
[G]
[H]
After the master is fed 59.5 millimeters, the magnetic clutch [A] will turn off
and the reverse roller [L] will stop. After the master is fed another 5
millimeters, the master feed clamper solenoid will turn off because the
leading edge of the mast er has already reached the clamper [N].
C2182-24SM
Page 77
3.4 MASTER WRAPPING MECHANISM
[B]
[A]
[C]
[D]
[A]
[D]
[C]
[E]
Detailed
Section
Descriptions
When the magnetic clutch [B] is turned off, the reverse roller [A] will stop.
However, since the feed rollers [C] turn continuously, the master continues to
be fed, causing the master to buckle. This buckle [E] is detected by the
master buckle sensor [D]. When the sensor turns on, the main motor will turn
on at 10 rpm to rotate the drum. The main motor will turn off when the sensor
turns off.
The master is fed by repeating the ON/OFF action of the master buckle
sensor. This mechanism pre vents the shockwav e from having an effect on
plotting (Burning the image onto the master) when the drum pulls the master
(for instance by jiggling the master above the thermal head).
SM2-25C218
Page 78
3.5 CUTTER MECHANISM
[A]
[C]
[A]
[B]
[E]
[F]
[G]
[D]
After the master making process (plotting proce ss) is complet ed, th e mast er
feed motor will turn off and the cutter motor [A] will turn on.
The cutter motor [A] starts turning in reverse (arrows) when the cutter holder
[B] pushes against the left cutter switch located at the front (operation side)
end of the cutter rail (cutter holder home position). This will drive the cutter
holder [B] toward the re ar on the machine (non-ope r at i on side) by mea ns of
the gear/pulley [C] and the wire [D] on which the cutter holder [B] is fixed.
When the cutter holder rea ches the rear of the cutter rail and pushes against
the right cutter switch, the cutter motor [A] will change the rotating direction,
so the cutter holder [B] will start to move toward the front, cutting the master.
The cutter motor [A] will stop turning when the cutter holder [B] returns to its
home position and pushes against the left cutter switch. The master cutting
process is now completed.
While the cutter holder [B] is traveling to the rear, the roller [E] installed in the
cutter holder is turning clockwise because it touches the cutter rail. The roller
[E] rotates the rotary cutter blade [F] as indicated by the arrow. The master is
positioned between the rotary blade and blade plate [G] and as the cutter
moves back to its home position, it will cut the master. The blade plate also
serves as a lower guide pla te for the master.
[B]
After the master cut t in g pr o cess i s fi nish ed , th e m ast er is fed anoth er 40
millimeters and the master feed process is finished.
C2182-26SM
Page 79
3.6 ELECTRICAL TIMING
First Drum Position Sensor
Second Drum Position Sensor
Main Motor Reversing
Original Transport Motor
Master Feed Motor
Reverse Roller Clutch
Master Feed Clamper Solenoid
Buckle Sensor
Main Motor Forwarding
Left Cutter Switch
Right Cutter Switch
Cutter Motor Reversing
218.5° in Drum Rotation
T1
15.5 mm
21.5 mm
160° in Drum Rotation
T3
T2
Plotting Start
38 mm
5 mm
T4
Plotting Max.
X
Y
T6
40 mm
Detailed
Section
Descriptions
To Trial Print
T5
Cutter Motor Forwarding
T1: After the master eject proc ess is
completed, the main motor starts
rotating in reverse (opposite to
printing direction) at 30 rpm. At the
same time, the master feed motor
and the reverse roll e r ma gn et i c
clutch are turned so on to feed the
master 21.5 millimeters.
T2: The master feed clamper solenoid
is energized when the drum rotates
160 degrees (in rever s e) pa st th e
second drum position sensor
actuation positio n.
80°
160°
0°
0°
240°
SM2-27C218
Page 80
T3: When the drum rotates 58.5
degrees more, the drum master
clamper is completely open, and
the drum stops.
When the drum stops, the original
will be fed. After the original has
been fed 15.5 millimeters, the
master will start being fed, and the
thermal head will start plotting on
the master.
At the same time, the reverse roller
magnetic clutch will turn to feed the
master 38 millimeters. The master
will start to buckle when the reverse
roller magnetic clutch turns off.
T4: After the reverse roller magnetic
clutch is turned off, th e m ast er is
fed 5 millimeters more. Then, the
master feed clamper solenoid is
de-energized and the master
clamper is closed. (At this moment,
the master plotti ng has alr e ad y
begun.)
80°
80°
0°
58.5°
160°
218.5°
0°
298.5°
240°
298.5°
Because the shockwave from
clamping might affe ct plotting (for
instance by jiggling the master
above the thermal head). The extra
5 millimeters that the master is fed
will buckle the master and the
buckle will absorb the shockwave.
298.5°
C2182-28SM
Page 81
When the master feed clamper solenoid is de-energized, the drum will
start rotating for wa r d ( th e pr in ti n g dir e cti o n) at 10 rpm to wra p th e m ast er
around the drum. The drum will pull the master and straighten out the
buckle. The drum will stop when the buckle sensor is de-activated. The
master again buckles since the master feed motor continues to feed the
master. The master is wra pped ar ou nd the drum by r ep ea tin g th ese
steps, controlled by the ON / OFF act i on of th e bu ckle sen s or.
The original transport and master feed motor will speed up once the
master plotting is completed, so the bla nk sect ion of the mast er is now
being wrapped quickly. The master feeding length for the plotting area is
fixed at 410 millimeters (maximum plotting length) in the standard
A3/DLT drum (206 millimeters in the A4/LT drum).
The master feed motor will stop after the master is fed X1 and X2
millimeter. X1 and X2 depend on the drum type as follows:
Drum TypeA3/DLTA4/LT
X1 (mm)410206
X2 (mm)6061
T5: The drum (main motor) will stop after the master has been fed 537
millimeters.
At the same time, the cutter motor starts rotating and the master is cut.
The cutter motor will change the rotating direction when the cutter holder
pushes against the right cutter switch. The cutter motor will stop when the
cutter holder returns to the home position and the left cutter switch is
again activated. (At the same time,the pressure plate motor will also start
to turn to raise the pressure plate).
Detailed
Section
Descriptions
When the right cutter switch is activated, the drum will start rotating in the
forward direction at 30 rpm to return to its home position. The drum will
continue to rotate forward to make a trial print.
T6: When the left cutter switch is activated (the cutter home position) and the
cutter motor will stop, the master feed motor again turns on to feed the
master 40 millimeters an additional, then will turn off.
SM2-29C218
Page 82
3.7 CIRCUIT
[A]
[B]
[C]
[D]
[E]
CN108
1
2
3
1
-10
-11
2
3
-12
CN108
CN104
-7
-8
-9
-3
-1
-4
-2
-2
-1
Main PCB
24V
5V
GND
5V
GND
GND
GND
GND
FU101
CN108-13
-14
CN109
-B33
-B34
-A1
-A2
-A3
Image Processing
PCB
CN108-5
CN103-6
C
M
[F]
CN403
-1
-2
-3
-4
-5
[G]
+24V
CN706
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
Thermal Head
Drive PCB
Master
Feed
Motor
M
Component
Name
Master Buckle
Sensor [A]
Master Roll Detection
Sensor [B]
Left Cutter
Switch [C]
Right Cutter
Switch [D]
Master Cut
Button [E]
see note
Reverse Roller
Magnetic Clutch
[F]
Cutter Motor
(Forward) [G]
Cutter Motor
(Reverse) [G]
In/OutMain PCBDescription
CN No.Signal Level
In108-8Signal goes High when the sensor
0V
In108-11Signal goes Low when the sensor
In108-3Signal goes Low when the cutter
5V
5V
5V
detects the master buckle.
0V
detects the master on the master roll.
0V
holder pushes the switch actuator
(home position).
In108-4Signal goes Low when the cutter
In104-2Pulse signal goes to Low when the
Out108-14Signal goes Low when the clutch is
Out108-5Signal goes High when the cutter
Out108-6Signal goes High when the cutter
5V
7.5V
0V
24V
0V
0V
7.5V
0V
5 msec
5 msec
0V
holder pushes the switch actuator.
button is pressed.
0V
energized.
24V
holder is returning.
24V
holder is moving toward the rear.
NOTE: Measure 0.9V on DC meter
C2182-30SM
Page 83
4. PAPER FEED SECTION
4.1 OVERALL
[A]
[B]
[F]
[E]
[C]
[D]
Detailed
Section
Descriptions
This mechanism uses a center separation system, which consists of the
separation plate [F], upper separation roller [B], and the lower separation
roller [E]. If a few sheets of paper are pic ked up from the paper stack (paper
table) by the pape r fee d r oll e r [A] , on ly one shee t of paper is transporte d to
the second upper feed r oll e r [C] an d seco nd lo wer fe ed ro ll er [D ] .
SM2-31C218
Page 84
4.2 PAPER FEED ROLLER/UPPER SEPARATION ROLLER
MECHANISM
[A]
[B]
[M]
[C]
[D]
[L]
[K]
[J]
[I]
[H]
The sector gear [J], loca te d on the non - op era ti o n si de of th e mach i ne ,
rotates the paper feed roller [M] and the upper separation roller [A]. When the
paper feed solenoid [G] is engaged, the link [F] is pulled downward. When
the cam roller [D] is positioned on top of the paper feed roller cam [C], the
sector stopper [E] will turn counterclockwise as a clearance is formed
between the pin [I ] and the stop pe r [E] . The cam ro ll er [D ] of th e sector gear
will move along the cam face of the paper feed roller cam [C].
When moving the cam roller [D] from the bottom to the top of the paper feed
roller cam [C], th e sect or ge ar [J] turns clockwise and the ge ar [H ] is tu rne d
counterclockwise. The rotation of the gear [H] is transmit ted to the upper
separation roll er sha ft [ B] by a one- w ay clut ch i nsid e th e ge ar [H], and the
upper separation roller [A] will turn counterclockwise.
[E]
[F]
[G]
At the same time, the pulley [K] mounted on the upper separation roller shaft
[B] will turn, and the belt [L] will rotate the paper feed roller [M]
counterclockwise to feed the printing paper.
When the cam roller [D] m oves from the top to the bottom of the paper feed
roller cam [C], the sector gear [J] turns counterclockwise and the gear [H] is
turned clockwise. Ho weve r, du e to the one - way clutch inside the gear [H],
the upper separation roller [A] and the paper feed roller [M] do not turn.
C2182-32SM
Page 85
4.3 FEED ROLLER PRESSURE MECHANISM
[A]
[D]
[B]
[C]
Detailed
Section
Descriptions
The weight of the feed roller assembly [C] will press the paper feed roller
onto the paper that is stacked on the paper table. This is because the feed
roller assembly rotates freely around its shaft [D].
The spring [A] applie s ten si on to th e fe ed rol ler asse mbl y i n the di r e ctio n i n
which the paper feed roller is pulled up. When the feed roller pressure lever
[B] is moved up, the spring [A] will also moved upward. The tension of the
spring is increased, weakening the feed roller pressure.
Originally, the feed roller pressure lever is in the up position (standard
paper). When thick paper (132.5 to 215 g/m2, or 35.2 to 57 lb.) is used and
frequently paper is not fed, push down the feed-pressure lever. The feed
roller pressure will increase.
SM2-33C218
Page 86
4.4 PAPER SEPARATION MECHANISM
[A]
[B]
[D]
[A]
[C]
[E]
[G]
[F]
Spring tension [F] holds the separation plate [G] against the upper separation
roller. A rubber pa d l oca te d on top of th e sep ar a tio n pl a te is use d to sepa rate
a few sheets of paper before they reach the lower separation roller. If too
many sheets of paper are fed to the lower separation roller at the same time,
the lower separation roller will not separate the sheets, it can separate only
two or three sheets of pap er.
[D]
[C]
Springs pull lever [A] pushes the lower separation roller [E] upward. This
roller presses the sheets to be fed against the upper separation roller [B].
The lower separati on ro ll er does not turn in the paper fee di n g dir e cti o n. (I t
turns in the opposite dir e cti o n be cau se of the one - way clutch bearings [D]
located on both right an d left separation levers [A].) When 2 sheets of paper
are fed, brake force is applied to the lower sheets of paper by the friction
between the paper and the lower separation roller. Then, the sheets are
separated and a single sheet of paper is fed to the second feed rollers.
The pressure between upper and lower separation rollers can be adjusted in
two steps by changing the right and left separation pressure adjusting levers
[C] as follows:
Levers Up: Separation pressure decreases.
Levers Down: Standard position.
When dog-eared or wrinkled prin ts are delivered, the separa tion pressure
should be decreased.
C2182-34SM
Page 87
[Fig. 1-3][Fig. 1-2]
"E"
[Fig. 1-1]
[A]
Direction of
Paper Feed
←
[C]
[A]
[B]
Detailed
Section
Descriptions
View from
"E"
[H]
[C]
[D]
[H]
[F]
[G]
The lower separation roller [C] will turn slightly (Fig. 1-1) due to the one-way
clutch bearings when paper passes through the roller. The lower separation
roller [C] and its shaf t [D ] ar e sli gh tl y pu she d do w nwa r d by th e pa pe r [ B]
when the upper separat i on roller [A] is feeding the paper. (View from "E")
Just when the paper is be ing f ed out from the rollers, th e l ower separation
roller [C] and its shaft [D] will spring back against roller [A]. (Fig. 1-3) This
rotates the lower separation roller and insures that it will wear out evenly.
There are four paper guide rollers [G] to reduce curl in the paper’s leading
edge, and to feed the paper smoothly into the guide plates. There are four
slots [N] on the bracket [F] corresponding to the rolle r position s as shown in
the lower figure.
SM2-35C218
Page 88
[A]
[B]
[C]
The side pads [A] are inst al le d i n th e fro nt and rear paper side guide s to
prevent multiple feed. These are especially useful when thin paper is used.
After adjusting the paper side plates to the prope r paper width (so that they
touch the paper lig htly), move the fron t an d rea r sid e pa d leve r s to th e r i gh t.
Normally, the side pads pressure should be released by moving the levers to
the left.
The separation plate pressure can be adjusted to match the type of paper
being used. The plate which supports the pressure plate spring [B], can be
moved up or down by turnin g th e ecce nt r ic cam shaf t [C].
If multiple paper fe ed fr eq ue ntly occurs, the plate sho uld be moved upward.
If paper misfeeds fr e qu en tl y, the plate should be move d do wnw a r d.
C2182-36SM
Page 89
4.5 SEPARATION ROLLER PRESSURE RELEASE
MECHANISM
[A]
[B]
[C]
Detailed
Section
Descriptions
[D]
[E]
When printing is finished or a misfeed occurs, the paper table drive motor will
rotate for 500 milliseconds to lower the paper table. The paper on the pape r
table will move down from the paper feed roller [D]. The paper feed bracket
[A] is pulled downward by its own weight.
At this time, the shaft [B] will push the left separation lever [C] down. This
will move the lower separation roller [E] slightly downward.
This mechanism will make it easier to remove paper that is caught between
the upper and lower separation rollers.
SM2-37C218
Page 90
4.6 SEPARATION PLATE PRESSURE RELEASE MECHANISM
[A]
When the paper table starts to move down, the separation plate release
solenoid [A] is energized. The pressure release arm [D] turns clockwise, and
the separation plate [C] moves down from the upper separation roller. This
mechanism will allow for the easy removal of any paper this is caught
between the uppe r sepa r at i on ro ll er an d th e sep ar a ti o n pla t e .
[B]
[C]
[D]
After the paper table is lowered, the separation plate release solenoid is
de-energized. Spring [B] tension will move the separation plate back to the
original position.
C2182-38SM
Page 91
4.7 PAPER RETURN MECHANISM
[D]
Paper Table Drive Motor
Paper Return Motor Forward
Paper Return Motor Reverse
Separation Plate Release
Solenoid
[A]
Printing End or Paper Misfeed
500 msec
900 msec
1.2 sec
[C]
[B]
[B]
Detailed
Section
Descriptions
When the paper feed function stops, there may still be some sheets of paper
between the upper and lower separation rollers. This mechanism will return
sheets of paper that are between the rollers back onto the paper stack on the
paper table.
When the paper table ha s been lowered, the paper return motor [B] (stepping
motor) will start to rotate. The paper return levers [A] will turn toward the
paper table, an d pu sh th e she ets of paper betwee n th e up pe r and lo wer
separation roll ers ba ck ont o th e pa pe r stack on the pap er ta bl e .
The paper return levers turn toward the paper table for 900 milliseconds. The
paper return motor will then start rotating in the reverse direction. This will
help the spring [D] to pull back the levers. (In reverse, the motor will not turn
the levers directly through the gears because gear [C] has a one-way clutch.)
The paper return motor will keep rotating for 1.2 seconds. During this period,
the paper return levers hit the edge of a bracket and stop. When the paper
return levers are stopped, the paper return motor is still turning. However,
this rotation is no t tra nsm itted to the levers becaus e of the one- w ay clut ch i n
the gear [C].
SM2-39C218
Page 92
4.8 SECOND FEED ROLLER MECHANISM
[J]
[A]
[I]
[H]
[G]
[F]
[Drive Mechanism]
The lower second feed roller [I] is driven by the sector gear [C] and the feed
roller gear [E]. When the paper feed solenoid [G] turns on, the l ink [F]
combined with the paper feed roller sector stopper [H] are pulled.
The bearing [J] of the sector gear moves along th e ed ge of th e seco nd fee d
roller cam. When the bea ri ng of th e sect or ge ar comes to the top of the lower
second feed roller cam [A], the stopper [B] is released from the sector gear
as a clearance is formed bet w ee n th e pi n of th e sect or ge ar [D ] and the
stopper.
[B]
[C]
[D]
[E]
When the feed roller gear turns counterclockwise, its rotation is not
transmitted to th e lowe r secon d fe ed rol ler be cau se of the one -w ay clut ch
bearing press-fit into the gear.
When the bearing of the sector gear moves up from the bottom of the second
feed roller cam, th e sect or ge ar tu r ns cou nt er clo ckw i se an d th e fe ed ro ll er
gear turns clockwise. As the rotation of the feed roller gear is transmitted to
the lower second feed roller, the lower second feed roller will turn clockwise
to feed the paper to the drum section.
C2182-40SM
Page 93
[B]
[A]
[G]
[F]
[A]
[E]
[Release Mechanism]
The release mechanism do es two thi n gs: it rai ses an d low e r s the upper
second feed roller, and it activates the lower second feed roller. It also
synchronizes these two steps.
[C]
[D]
Detailed
Section
Descriptions
The mechanism is made up of several parts. First, a cam which transmits
motion to a sector gear [F] ; then another cam [E] that is part of the sector
gear. A lever [D] is rotated by this cam through the lever’s bearing. There are
two rollers called the second feed rollers: the upper second feed roller [B]
and the lower second feed roller [G]. The lever [D] turns a shaft [C] and
moves the upper second feed roller.
At the beginning of each paper feed cycle the two paper feed rollers are
apart, they will come together halfway through the cycle and at the end of the
cycle they will be moved apart.
Initially, the second feed rollers are apart, and the sector gear is ready to
start moving clockwise. The lever’s bearing is in contact with the sector
gear’s cam. As the gear turns clockwise, it will cause the cam to turn the
lever in the same direction (clockwise).
The lever will then lowers the upper second feed roller [B] by turning the
roller’s eccentric shaft [C]. Eccentric means tha t the sha ft does not go
through the cente r of th e r oll e r , act ua l ly it is a l it t le off center. So that whe n
the shaft turns the roller, the roller will move up or down.
SM2-41C218
Page 94
When the cycle is halfway through, the sector gear has reached its maximum
clockwise position. The upper roller will touch the lower roller and a pair of
springs [A] will apply tension at each end of the upper roller. Until this
member, the lower roller has not turned.
At this moment, the paper had arrived from the first paper feed rollers. The
leading edge of the paper hit the two rollers and the paper will buckle slightly.
This will insues that the paper will go into the rollers straight.
The lower roller begin to turn and will feed the paper to the drum section. The
sector gear is turning counterclockwise, and will raise the upper roller. The
gear will return to its original position and the paper feed cycle is now
completed.
C2182-42SM
Page 95
4.9 PAPER TABLE SIDE ADJUSTMENT MECHANISM
[B]
[A]
[C]
[G]
[F]
[E]
The shaft [D] of the fine adjusting dial [F] is threaded. The inside of the
sleeve [E] is also threaded. The sleeve is fixed to the paper table stay [B]
through a bracket [ A] .
The paper table bra cket [C] is mounted unde r the tab l e i s fi xed on bo th end s
of the adjusting dial sha ft . W he n th e ad j ust ing dial i s turned clockwise, the
feed table bracket [C] and the paper table will move to the right.
[D]
Detailed
Section
Descriptions
The indicator [G] is fixed to the bracket [A] and will show the movement value
of the paper tab le.
SM2-43C218
Page 96
4.10 PAPER TABLE UP/DOWN MECHANISM
The paper table is raised and lowered by the paper table drive motor.
The paper end sensor [E] (a reflective photosensor) is actuated when the
paper is set onto the paper table. When the Print Start k ey is pressed, the
paper table drive motor [H] will rotate clockwise and the worm gear [G] will
turn. The worm wheel [F] will rotate clockwise and both gears [D] will turn to
raise the racks [C].
As the paper table rises, the paper will push against the paper feed roller [I].
This will raise the lever [J] which is mounted on the paper feed bracket. This
will activate the paper table height sensor [K] (the phototransistor senses the
light from the ph ot oco up l er , whi ch up to now was cut off by the lever) , w he n
activated, the paper table height sensor will cause the paper table motor [H]
to turn OFF and stop raising the paper table.
As printing proceeds and the level of paper on the table decreases, th e lever
[J] will cut off the light of the photocoupler and the motor [H] will turn
clockwise raising the table until the phototransistor is reactivated. As a result,
the top of the paper stack i s const an tly be ing kept at th e cor re ct he i gh t.
When no paper is present, the paper end sensor [E] is not activated and the
motor [H] turns counterclockwise to lower the paper table. The paper table is
lowered until the actuator [A] (fixed to the front rack) interrupts the lower limit
sensor [B].
When a misfeed occurs or printing is finished, the paper table motor [H] will
turn counterclockwise for 500 milliseconds, to lowering the paper table
slightly.
C2182-44SM
Page 97
[C]
[D]
[A]
[E]
[C]
[D]
[B]
[H]
[F]
[G]
Detailed
Section
Descriptions
[I]
[J]
[K]
SM2-45C218
Page 98
4.11 PAPER SIZE DETECTION
This machine uses two methods to detect the paper size. One method is
used for the paper on the paper table, and the other method is used for the
optional cassette.
The machine will determine the master plotting area based on the detected
paper size and the original size (which is detected during the original
scanning process). If the original size is different from the paper size, the
machine will compare the length of the original and paper. The master’s
length will be the shorter of the two. The machine will perform the same
procedure for the width. (The de termined plotting area is not changed if
paper on the paper table is replaced with another size paper during the
master making process.) The master plotting area for each detected paper
size is as follows:
Paper Size
A3
B4
A4
A4-S
B5
B5-S
A5
DLT
LG
LT
LT-S
HLT
-S: Sideways feed
The machine can only distinguish standard sizes. If a non-standard sized
paper or original is used, the machine will judge the non-standard sized
paper or original as a stan da r d size. I f th e act ua l size d pa pe r , th e
non-standard sized paper, or the original is larger than the judged paper size,
the remaining area will not be plotted on the master.
Master Plotting Area
Width (mm)Length (mm)
292
256
208
292
180
256
146
278
214
214
278
138
407
351
284
197
244
169
197
407
343
266
203
203
In that case, in order to obtain the entire image of the original, the original
width, paper size, and cassette size detections can be separately canceled,
using SP mode. However , th e pr e ss rol ler may be com e cont am in at ed with
ink when paper is smaller than the plotted image on the master. The ink will
be transferred to the back side of the prints when the next printing is done
with larger paper.
C2182-46SM
Page 99
[Paper Size Detection for Paper Table]
[B]
[A]
[B]
[F]
[E]
[D]
[C]
[A]
The paper width detection plate [A] installed behind the front paper side
guide [B] has several interrupters, [C] to [F].
[G]
Detailed
Section
Descriptions
The front and rear paper side guides are adjusted to the paper width.
Depending on which paper width sensors [C] [D] [E] [F] (4 photointerrupters)
are interrupted and whether the paper length sensor [G] (a reflective sensor)
on the paper detection PCB is activated, the machine will determine the
paper size as shown in the be low ta ble.
Paper SizeA4-SLT-S B5-SLTA4B5 A5HLTA3 DLT B4 LG
Paper Width Sensor-0
[C]
Paper Width Sensor-1
[D]
Paper Width Sensor-2
[E]
Paper Width Sensor-3
[F]
Paper Length Sensor [G]
o x oxxxoxxooxox
xooxxxooooxoox
xxoooooxxxxxoo
x xx xxoo ooox x x x
x x x xxxxxxxo o oo
x: Non-blocked or Non- act i vat ed , o: Bl ocke d or Act ivated
-S: Sideways feed
SM2-47C218
Page 100
[Cassette Paper Size Detection]
[A][B][C][D]
[E]
The machine determines the optional cassette size through the cassette size
detection PCB [E]. The ree d swi tch es on this PCB ar e act ivated by magnets
positioned on the bo tt om of the casset te . The ma gn et s ar e po siti o ne d
according to the paper size (the magnet position for each of size paper is
described on the back of the cassette). Depending on which reed switches
[A] [B] [C] [D] are activated, the machine will determine the cassette size as
shown in the table below: