Minolta Di181 User manual

FrameMaker Ver.5.5E(PC) COVER [GENERAL] FOR Di181
99.07.14
Di181
SERVICE MANUAL
[GENERAL]

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
GENERAL
14413

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
i
CONTENTS
1. SAFETY INFORMATION .................................................................................G-1
2. SPECIFICATIONS ...........................................................................................G-7
3. PRECAUTIONS FOR INSTALLATION ............................................................G-10
3-1. Installation Site ........................................................................................G-10
3-2. Power Source ..........................................................................................G-10
3-3. Grounding ................................................................................................G-10
4. PRECAUTIONS FOR USE ..............................................................................G-11
4-1. To Ensure Optimum Conditions ...............................................................G-11
4-2. Operating Environment ............................................................................G-11
4-3. Power Requirements ...............................................................................G-11
4-4. Prohibitions ..............................................................................................G-11
5. HANDLING OF CONSUMABLES ....................................................................G-12
6. OTHER PRECAUTIONS .................................................................................G-13
7. SYSTEM OPTIONS .........................................................................................G-14
8. CROSS SECTIONAL VIEW ............................................................................18
9. COPY PROCESS ............................................................................................19
10. DRIVE SYSTEM ..............................................................................................21
11. SEQUENTIAL EXPLANATION ........................................................................22
12. PC DRUM SECTION .......................................................................................23
12-1.PC Drum Drive Mechanism .....................................................................23
12-2.Grounding of the PC Drum ......................................................................24
13. PC DRUM CHARGING SECTION ...................................................................25
14. IR SECTION ....................................................................................................26
14-1.Exposure Components Section ...............................................................27
14-2.Exposure Lamp Control ...........................................................................28
14-3.Image Processing Process ......................................................................29
14-4.Scanner and Mirrors Carriage Movement Mechanism ............................31
(1) Scanner Movement Mechanism ......................................................31
(2) 2nd/3rd Mirrors Carriage Movement Mechanism ............................31
14-5.Scanner Motor Drive Control ...................................................................32
15. Original Size Detecting Section .......................................................................33
15-1.Original Size Detecting Operation ...........................................................33
15-2.Original Size Detecting Sensors Locations .............................................34
15-3.Original Size Detection ............................................................................35
15-4.Original Size Detection Timing ................................................................36
16. PH SECTION ...................................................................................................37
16-1.PH Image Processing Process ................................................................38
16-2.Laser Exposure Process .........................................................................40
17. DEVELOPING UNIT SECTION .......................................................................41
17-1.Developing Unit Drive Mechanism ..........................................................42
17-2.Sleeve/Magnet Roller ..............................................................................42
17-3.Doctor Blade ............................................................................................43
17-4.Developing Bias .......................................................................................43
17-5.ATDC Sensor ..........................................................................................44
(1) ATDC Sensor Automatic Adjustment ..............................................45
17-6.Toner Replenishing Mechanism ..............................................................46

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
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17-7.Toner Replenishing Control .....................................................................47
17-8.Toner Supply Hole Covering/Uncovering Mechanism .............................48
17-9.Toner Bottle Home Position Detection Mechanism .................................48
17-10.Toner Bottle Vibration Mechanism ........................................................49
17-11.Toner Empty Detection ..........................................................................49
18. PAPER TAKE-UP/FEED SECTION ................................................................50
18-1.Drawer In Position Detection ...................................................................51
18-2.Paper Empty Detection Mechanism ........................................................52
18-3.Universal Tray Paper Size Detection Mechanism ...................................53
18-4.Paper Take-Up Mechanism .....................................................................55
(1) Paper Separating Mechanism .........................................................55
18-5.Paper Take-Up Roll .................................................................................56
18-6.Paper Take Up Control ............................................................................56
(1) Paper Take Up Retry Control ..........................................................57
18-7.Vertical Transport Drive Mechanism .......................................................58
19. MANUAL FEED SECTION ..............................................................................59
19-1.Manual Feed Paper Take Up Drive Mechanism ......................................60
19-2.Manual Bypass Take Up Roll Pressure Mechanism ...............................61
19-3.Manual Feed Paper Separating Mechanism ...........................................62
19-4.Manual Feed Paper Empty Detection Mechanism ..................................63
19-5.Manual Feed Take Up Control ................................................................63
20. TRANSPORT/SYNCHRONIZING ROLLERS ..................................................64
20-1.Paper Dust Remover ...............................................................................64
20-2.Transport Roller Drive Mechanism ..........................................................65
20-3.Synchronizing Roller Drive Mechanism ...................................................65
20-4.Transport Drive Control ...........................................................................66
21. IMAGE TRANSFER AND PAPER SEPARATION ...........................................67
21-1.PC Drum Paper Separator Fingers Section ............................................68
(1) Finger Back and Forth Detection Mechanism .................................68
22. PC DRUM CLEANING SECTION ....................................................................69
22-1.Cleaning Blade Moving Mechanism ........................................................69
23. MAIN ERASE SECTION ..................................................................................70
24. TRANSPORT SECTION ..................................................................................71
25. FUSING UNIT SECTION .................................................................................72
25-1.Fusing Unit Drive Mechanism ..................................................................73
25-2.Fusing Rollers Pressure Mechanism .......................................................73
25-3.Fusing Roller Cleaning Mechanism .........................................................74
25-4.Fusing Temperature Control ....................................................................75
26. OTHER MECHANISMS ...................................................................................77
26-1.Memory Backup .......................................................................................77
26-2.Dehumidifying Mechanism ......................................................................78
(1) PC Drum Dehumidifying ..................................................................78
(2) Paper Dehumidifying Mechanism ....................................................78
26-3.Cooling Mechanism .................................................................................79
(1) Optical Section Cooling Mechanism ................................................79
(2) Power Supply Section Cooling Mechanism .....................................79
26-4.Ozone Filter .............................................................................................80

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-1
Laser Safety
This is a digital machine which prints by means of a laser. There is no possibility of danger
from the laser, provided the machine is operated according to the instructions in this
manual.
Since radiation emitted by the laser is completely confined within protective housing, the
laser beam cannot escape from the machine during any phase of user operation.
This machine is certified as a Class 1 product. This means the machine does not produce
hazardous laser radiation.
Internal Laser Radiation
Maximum Average Radiation Power: 15.6νW at laser aperture of the print head unit
Wavelength: 770-795nm
This product employs a Class IIIb Laser Diode that emits an invisible laser beam.
The Laser Diode and Scanning Polygon Mirror are incorporated in the print head unit.
The print head unit is NOT A FIELD SERVICE ITEM.
Therefore, the print head unit should not be opened under any circumstances.
For United States
CDRH regulation
This copier is certified as a Class 1 Laser product under the Radiation Performance
Standard accordingtothe Food, Drug and Cosmetic Act of 1990. Compliance is mandatory
for Laser products marketed in the United States and is reported to the Center for Devices
and Radiological Health (CDRH) of the U.S. Food and Drug Administration of the U.S.
Department of Health and Human Services (DHHS). This means that the device does not
produce hazardous laser radiation.
1SAFETY INFORMATION
CAUTION: The use of controls, adjustments or performance of procedures
other than those specified in this manual may result in hazardous radiation
exposure. Because of this, Minolta strongly recommends that you operate
your copy machine only as described in this documentation.

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-2
The label shown on page G-3 indicates compliance with the CDRH regulations and must
be attached to laser products marketed in the United States.
This is a semiconductor laser. The maximum power of the laser diode is 5mW and the
wavelength is 770-795nm.
For Europe
For Denmark
For Finland
For Sweden
CAUTION: Use of controls, adjustments or performance of procedures other than those
specified in this manual may result in hazardous radiation exposure.
CAUTION: Use of controls, adjustments or performance of procedures other than those
specified in this manual may result in hazardous radiation exposure.
This is a semiconductor laser. The maximum power of the laser diode is 5mW and the
wavelength is 770-795nm.
ADVARSEL
Usynlig laserstråling ved åbning, når sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
Klasse 1 laser produkt der opfylder IEC60825 sikkerheds kravene.
LUOKAN 1 LASERLAITE
VAROITUS
Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa
käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle.
VARO
Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättomälle lasersäteilylle. Älä
katso säteeseen.
KLASS 1 LASER APPARAT
VARNING
Om apparaten används på annat sätt än i denna bruksanvisning specificerats, kan
användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.
VARNING
Osynlig laserstråining när denna del är öppnad och spärren är urkopplad. Betrakta ej
stråien.

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-3
For Norway
Laser Safety Label
A laser safety label is attached to the outside of the copy machine as shown below.
The Manufacturer’s Name Plate is affixed at the position illustrated above.
Please write down the Model Name and Serial No. of your copier here.
ADVERSEL
Dersom apparatet brukes på annen måte enn spesifisert i denne bruksanvisning, kan
brukeren utsettes för unsynlig laserstrålning, som overskrider grensen for laser klass 1.
Dette en halveder laser. Maksimal effekt till laserdiode er 5mW og bγlgelengde er 770-
795nm.
Model:
Serial No.:
CLASS 1 LASER PRODUCT
LASER KLASSE 1 PRODUKT
MINOLTA CO., LTD
2, Higashiakatsuchi, Yawata-cho, Toyokawa-shi
Aichi-ken 442-8585, Japan
MANUFACTURED:
THIS PRODUCT COMPLIES WITH 21 CFR
CHAPTER I, SUBCHAPTER J.
0946-7101-14
Laser safety label
C1177O080CA
Manufacturer’s
Name Plate
1166O248AA
For Europe
For United States

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-4
Label inside copy machine
The following laser safety label will be attached inside the copy machine as shown below.
Please read the following for your own protection.
Opening the cover indicated by the Caution label may expose you to harmful laser radiation
which could cause damage or loss of eyesight. Do not open the cover when the power is
on.
Caution
1177M052AA
1167P001AA
1177M062AA
1167P001AA

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-5
ALL Areas CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type
recommended by the manufacturer.
Dispose of used batteries according
to the manufacturer’s instructions.
Germany only VORSICHT!
Explosinsgefahr bei unsachgemäßen austausch der
batterie. Ersatz nur durch denselben oder einen vom hersteller
empfohlenen ähnlichen typ. Entsorgung gebrauchter batterien
nach angaben des herstellers.
Denmark only ADVARSEL!
Lithiumbatteri - Eksplosionsfare ved fejlagtig håndtering
Udskiftningmåkunskemedbatteri
af samme fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
Norway only ADVARSEL
Eksplosjonsfare ved feilaktig skifte av batteri.
Benytt samme batteritype eller en tilsvarende
type anbefalt av apparatfabrikanten.
Brukte batterier kasseres i henhold til fabrikantens
instruksjoner.
Sweden only VARNING
Explosionsfara vid felaktigt batteribyte.
Använd samma batterityp eller en ekvivalent
typ som rekommenderas av apparattillverkaren.
Kassera använt batteri enligt fabrikantens
instruktion.
Finland only VAROlTUS
Paristo voi räjähtää, los se on virheellisesti asennettu.
Vaihda paristo ainoastaan laitevalmistajan suosittelemaan
tyyppiin. Hävitä Käytetty paristo valmistajan ohjeiden
mukaisesti.

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-6
ALL Areas CAUTION
“Replace only with the same or equivalent type recommended by the manufacturer.
Dispose of used IC Package according to the manufacturer’s instructions.”
Germany only VORSICHT!
Þ”Austausch nur durch denselben oder einen vom Hersteller empfohlenen,
gleichwertigen typ. Entsorgung gebrauchter Batterien nach Angaben des Herstellers.

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-7
COPY MEDIUM
■: Permissible —: Not permissible
2SPECIFICATIONS
1st Drawer 2nd Drawer Multi Bypass Table
Medium
Plain paper
(60to90g/m
2)■■
Translucent paper — — ■
Transparencies — — ■
Thick paper
(91to157g/m
2)——■
Recycled paper ■■■
Dimensions
Maximum
(Width × Length) 297 × 432 mm 297 × 432 mm 297 × 432 mm
Minimum
(Width × Length) 140 × 182 mm 140 × 182 mm 100 × 140 mm
TYPE
PHOTOCONDUCTOR
COPYING SYSTEM
RESOLUTION
PAPER FEEDING SYSTEM
EXPOSURE SYSTEM
DEVELOPING SYSTEM
CHARGING SYSTEM
IMAGE TRANSFER SYSTEM
PAPER SEPARATING SYSTEM
FUSING SYSTEM
PAPER DISCHARGING SYSTEM
MAXIMUM ORIGINAL SIZE
:
:
:
:
:
:
:
:
:
:
:
:
Desktop (with Stationary Platen)
Organic Photoconductor
Electrostatic Dry PowderedImage Transfer to Plain
Paper
600dpi
3-Way system 1st Drawer: Holds up to 250
sheets of paper
2nd Drawer: Holds up to 250
sheets of paper
Multi Bypass Table: 50 sheets of
paper
Mirror Scanning, Slit Exposure
New Micro-Toning System
Comb Electrode DC Negative Corona with
Scorotron System
Visible Image Transfer by means of a Single-Wire
DC Positive Corona with Corotron System
Single-Wire AC Corona with Corotron System, plus
Paper Separator Finger
Heat Roller
Charge Neutralizing Brush
Metric-A3L; Inch-11” × 17”L

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-8
CONTINUOUS COPY SPEED (copies/min.)
ZOOM RATIOS
POWER/CURRENT CONSUMPTION (Copier Only)
MULTIPLE COPIES
WARMING-UP TIME
FIRST COPY TIME
:
:
:
1to99
30 sec. or less with room temperature of 23 °C and
rated power voltage
A4C or 8-1/2” × 11”C: 9.0 sec. or less
(in Full Size Mode using 1st Drawer)
LENS
EXPOSURE LAMP
Fusing Temperature
:
:
:
Through Lens (F = 5.0, f = 55mm)
Fluorescent Lamp
185 °C
Voltage Exposure Lamp
(Rating) Fusing Heater Lamp (Rating) Max. Power Consumption
115 V
24 V
18 W
115/120 V
900 W
1180 W
120 V 1220 W
127 V 1290 W
220 V 220/240 V
900 W 1195 W
240 V 1270 W
POWER REQUIREMENTS : 115 V, 120 V, 127 V, 220-240 V; 50/60 Hz
L: Lengthwise; C: Crosswise
Area Zoom Ratio
Size × 1.000
Metric
A3L 13
A4L 17
A4C 18
B4L 13
Area Zoom Ratio
Size ×1.000
Inch
11” × 17”(L) 13
8-1/2” × 11”(L) 17
8-1/2” × 11”(C) 18
8-1/2” × 14”(L) 13
Fixed
Area
Mode Metric Inch
Full Size × 1.000 × 1.000
Reduction × 0.816 × 0.707
× 0.500
×0.785
×0.647
×0.500
Enlargement × 1.154 × 1.414
× 2.000
×1.214
×1.294
×2.000
Variable 50% to 200% (in 0.1% increments)

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
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G-9
ENVIRONMENTAL CONDITIONS
Temperature 10 to 30 °C with a fluctuation of 10 °C or less per hour
Humidity 15 to 85% RH with a fluctuation of 10% RH or less hour
Ambient Illumination 3,000 lux or less
Levelness 1° (1.75 mm/100 mm)
DIMENSIONS
(Copier Only)
WEIGHT
:
:
Width....650 mm (25-1/2”)
Depth....705 mm (27-3/4”)
Height....530 mm (20-3/4”)
69 kg (152 lbs)

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-10
To ensure safety and utmost performance of the copier, the copier should NOT be used in a
place:
÷Where it will be subjected to extremely high or low temperature or humidity.
÷Where it will be subjected to sudden fluctuations in either temperature or humidity.
÷Which is exposed to direct sunlight.
÷Which is in the direct air stream of an air conditioner, heater, or ventilator.
÷Which has poor ventilation or is dusty.
÷Which does not have a stable, level floor or where it will receive undue vibration.
÷Which is near any kind of heating device.
÷Which is near volatile flammables (thinner, gasoline, etc.).
÷Where it may be splashed with water.
÷Which puts the operator in the direct stream of exhaust from the copier.
÷Where ammonia gas might be generated.
÷If any other electrical equipment is sourced from the same power outlet, make sure that
the capacity of the outlet is not exceeded.
÷Use a power source with little voltage fluctuation.
÷Never connect by means of a multiple socket any other appliances or machines to the
outlet being used for the copier.
÷Ensure that the copier does not ride on the power cord or communication cable of other
electrical equipment, and that it does not become wedged into or underneath the mecha-
nism.
÷Make the following checks at frequent intervals:
✾Is the power plug abnormally hot?
✾Are there any cracks or scrapes in the cord?
✾Has the power plug been inserted fully into the outlet?
✾Does something, including the copier itself, ride on the power cord?
Use an outlet with a capacity of 115/120/127V or 220-240V.
÷Always ground the copier to prevent receiving electrical shocks in the case of electrical
leakage.
÷Connect the ground wire to the ground terminal of the outlet or a grounding contact which
complies with the local electrical standards.
÷Never connect the ground wire to a gas pipe, the ground wire for a telephone, lightning
arrester, or a water pipe for fear of fire and electrical shock.
3PRECAUTIONS FOR INSTALLATION
3-1. Installation Site
3-2. Power Source
3-3. Grounding

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
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G-11
÷Never place a heavy object on the copier or subject the copier to shocks.
÷Insert the power plug all the way into the outlet.
÷Do not attempt to remove any panel or cover which is secured while the copier is making
copies.
÷Do not turn OFF the copier while it is making copies.
÷Provide good ventilation when making a large number of copies continuously.
÷Never use flammable sprays near the copier.
÷If the copier becomes inordinately hot or produces abnormal noise, turn it OFF and
unplug it.
÷Do not turn ON the power switch at the same time when you plug the power cord into the
outlet.
÷When unplugging the power cord, do not pull on the cord; hold the plug and pull it out.
÷Do not bring any magnetized object near the copier.
÷Do not place a vase or vessel containing water on the copier.
÷Be sure to turn OFF the power switch at the end of the workday or upon power failure.
÷Use care not to drop paper clips, staples, or other small pieces of metal into the copier.
The operating environmental requirements of the copier are as follows.
÷Temperature: 10 to 30 °C
÷Humidity:15to85%RH
÷Rate of temperature change: 10 °C/h
÷Rate of humidity change: 10% RH/h
The power source voltage requirements are as follows.
÷Voltage fluctuation: AC115/120/127/220-240
±10% (copying performance assured)
(paper feeding performance assured)
÷Frequency fluctuation: 50/60 Hz ±0.3%
÷It is prohibited to copy paper and hard currencies, government securities, and municipal
bonds (even when they are stamped as “Sample”).
÷For fear of infringement of copyright, it is also prohibited to copy copyrighted works,
including books, music,works of art,maps, drawings, motion pictures, andphotos except
when the copy is to be for personal use only.
4PRECAUTIONS FOR USE
4-1. To Ensure Optimum Conditions
4-2. Operating Environment
4-3. Power Requirements
4-4. Prohibitions
+10%
-15%

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
G-12
Before using any consumables, always read the label on its container carefully.
÷Paper can be easily damaged by dampness. To prevent absorption of moisture, store
paper, which has been removed from its wrapperbut notloaded in the drawer, in a sealed
plastic bag in a cool, dark place.
÷Keep consumables out of the reach of children.
÷Do not touch the PC Drum with bare hands.
÷The same sized paper is of two kinds, short grain and long grain. Short grain paper
should only be fed through the copier crosswise, long grain paper should only be fed
lengthwise.
÷If your hands become soiled with toner, wash them with soap and water.
÷Do not throw away any used consumables (PC Drum, starter, toner, etc.). Theyare to be
collected.
÷Do not burn, bury in the ground, or throw into the water any consumables (PC Drum,
starter, toner, etc.).
÷Do not store consumables in a place which:
✾Is hot and humid.
✾Is subject to direct sunlight.
✾Hasanopenflamenearby.
5HANDLING OF CONSUMABLES

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
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Use the following precautions when performing service jobs for a copier that uses a laser.
÷When aservice job needs to beperformed in thelaser beam path, such as whenworking
around the printerhead or PC Drum, be sure first to unplug the power cord of the copier
from the outlet.
÷If the job requires that the power cord be left plugged in, observe the following precau-
tions.
1. Take off your watch, ring and any other reflective object and wear laser protective gog-
gles.
2. Keep users away from the job site.
3. Do not bring a highly reflective tool into the laser beam path during the service job.
6OTHER PRECAUTIONS

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
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7SYSTEM OPTIONS
1. Automatic Document Feeder AF-5
2. Plug-in Counter 3. Paper Feed Cabinet PF-207 4. Paper Feed Cabinet PF-114
1
4
2
3
1177M066AA
1151O007AA
1174G004AA 1174G003AA
1145M035AA

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
MECHANICAL/
ELECTRICAL
14413

FrameMaker Ver.5.5E(PC) Di181 GENERAL, MECHANICAL/ELECTRICAL
99.07.16
xvi
CONTENTS
1. CROSS SECTIONAL VIEW ............................................................................M-1
2. COPY PROCESS ............................................................................................M-2
3. DRIVE SYSTEM ..............................................................................................M-4
4. SEQUENTIAL EXPLANATION ........................................................................M-5
5. PC DRUM SECTION .......................................................................................M-6
5-1. PC Drum Drive Mechanism .....................................................................M-6
5-2. Grounding of the PC Drum ......................................................................M-7
6. PC DRUM CHARGING SECTION ...................................................................M-8
7. IR SECTION ....................................................................................................M-9
7-1. Exposure Components Section ...............................................................M-10
7-2. Exposure Lamp Control ...........................................................................M-11
7-3. Image Processing Process ......................................................................M-12
7-4. Scanner and Mirrors Carriage Movement Mechanism ............................M-14
(1) Scanner Movement Mechanism ......................................................M-14
(2) 2nd/3rd Mirrors Carriage Movement Mechanism ............................M-14
7-5. Scanner Motor Drive Control ...................................................................M-15
8. Original Size Detecting Section .......................................................................M-16
8-1. Original Size Detecting Operation ...........................................................M-16
8-2. Original Size Detecting Sensors Locations ..............................................M-17
8-3. Original Size Detection ............................................................................M-18
8-4. Original Size Detection Timing ................................................................M-19
9. PH SECTION ...................................................................................................M-20
9-1. PH Image Processing Process ................................................................M-21
9-2. Laser Exposure Process ..........................................................................M-23
10. DEVELOPING UNIT SECTION .......................................................................M-24
10-1.Developing Unit Drive Mechanism ..........................................................M-25
10-2.Sleeve/Magnet Roller ..............................................................................M-25
10-3.Doctor Blade ............................................................................................M-26
10-4.Developing Bias .......................................................................................M-26
10-5.ATDC Sensor ..........................................................................................M-27
(1) ATDC Sensor Automatic Adjustment ..............................................M-28
10-6.Toner Replenishing Mechanism ..............................................................M-29
10-7.Toner Replenishing Control .....................................................................M-30
10-8.Toner Supply Hole Covering/Uncovering Mechanism .............................M-31
10-9.Toner Bottle Home Position Detection Mechanism .................................M-31
10-10.Toner Bottle Vibration Mechanism ........................................................M-32
10-11.Toner Empty Detection ..........................................................................M-32
11. PAPER TAKE-UP/FEED SECTION ................................................................M-33
11-1.Drawer In Position Detection ...................................................................M-34
11-2.Paper Empty Detection Mechanism ........................................................M-35
11-3.Universal Tray Paper Size Detection Mechanism ...................................M-36
11-4.Paper Take-Up Mechanism .....................................................................M-38
(1) Paper Separating Mechanism .........................................................M-38
11-5.Paper Take-Up Roll .................................................................................M-39
11-6.Paper Take Up Control ............................................................................M-39
(1) Paper Take Up Retry Control ..........................................................M-40