Ricoh FT3013 S able of Contents

Table of Contents

1. OVERALL MACHINE INFORMATION

1. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . 1-1

2. COPY PROCES SE S AROUND THE DRUM . . . . . . . . . 1-4

3. COPY PROCESS CONTROL . . . . . . . . . . . . . . . 1-6

4. MECHANICAL COMPONENT LAYOUT . . . . . . . . . . 1-7

5. ELECTRICAL COMPONENT LAYOUT . . . . . . . . . . . 1-8

6. ELECTRICAL COMPONENT DE SCRI PTI ONS . . . . . . . . 1-9

7. DRIVE LAYOUT . . . . . . . . . . . . . . . . . . . . 1-12

8. POWER DISTRIBUTION . . . . . . . . . . . . . . . . 1-14

2. DETAILED SECITON DES CRI PTIONS

1. DRUM . . . . . . . . . . . . . . . . . . . . . . . . 2-1

1.1 DRUM CHARACTERISTICS . . . . . . . . . . . . . 2-1

1.2 DRUM UNIT . . . . . . . . . . . . . . . . . . . . 2-2

2. DRUM CHARGE . . . . . . . . . . . . . . . . . . . . 2-3

2.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-3

2.2 CHARGE CORONA WIRE CLEANER MECHANISM . . . . 2-4

2.3 CHARGE CORONA CIRCUIT . . . . . . . . . . . . . 2-5

2.4 GRID VOLTAGE CORRECTION . . . . . . . . . . . . 2-6

2.4.1 Drum Residual Voltage Correction (V r correction) . . . . 2-6

2.4.2 Drum Wear Correction . . . . . . . . . . . . . . 2-7

2.5 GRID VOLTAGE FOR IMAGE DENSITY CONTROL . . . . 2-7

2.5.1 Standard Imag e Den sity Grid Voltage . . . . . . . . 2-7

2.5.2 Drum Residual Voltage (Vr) Correction Factor . . . . . 2-8

2.5.3 Auto Image Density Level Fa ctor (SP34) . . . . . . . 2-8

2.6 GRID VOLTAGE FOR TONER DENSITY DETECTION AND

RESIDUAL VOL TAGE (Vr) DETECTION . . . . . . . . . 2-9

3. OPTICS . . . . . . . . . . . . . . . . . . . . . . . 2-10

3.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-10

3.2 SCANNER DRIVE . . . . . . . . . . . . . . . . . . 2-12

3.2.1 1st and 2nd Scann er Drive Mech an ism . . . . . . . . 2-12

3.3 LENS DRIVE (A152 copier on ly) . . . . . . . . . . . . 2-13

3.3.1 Lens Drive . . . . . . . . . . . . . . . . . . . 2-13

3.3.2 Lens Posit ion ing . . . . . . . . . . . . . . . . . 2-14

3.4 4TH/5TH MIRROR DRIVE (A152 copie r o nly) . . . . . . . 2-15

3.4.1 Drive . . . . . . . . . . . . . . . . . . . . . 2-15

3.4.2 Position ing . . . . . . . . . . . . . . . . . . . 2-15

3.5 AUTOMATIC IMAGE DE NSI TY SENSING . . . . . . . . 2-16

3.6 EXPOSURE LAMP VO LTAGE CONTROL . . . . . . . . 2-17

3.6.1 Base Lamp Voltage In Manual Image Density Mo de . . . 2-17

3.6.2 Base Lamp Voltage In Auto Image Density Mode . . . . 2-17

3.6.3 VL Correction Factor . . . . . . . . . . . . . . . 2-18

3.6.4 Reproduction Rat io Corre ction Factor (A152 copier only) . 2-18

3.7 EXPOSURE LAMP CONTRO L CIRCUIT . . . . . . . . . 2-19

4. ERASE . . . . . . . . . . . . . . . . . . . . . . . 2-20

4.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-20

4.1.1 Lead Edge Erase . . . . . . . . . . . . . . . . 2-21

4.1.2 Side Erase . . . . . . . . . . . . . . . . . . . 2-21

4.1.3 T railing Edge Erase . . . . . . . . . . . . . . . 2-23

5. DEVELOPMENT . . . . . . . . . . . . . . . . . . . . 2-24

5.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-24

5.2 DRIVE MECHANISM . . . . . . . . . . . . . . . . 2-25

5.3 CROSS-MIXING . . . . . . . . . . . . . . . . . . 2-26

5.4 DEVELOPMENT BIAS FOR IMA GE DENSITY CONTROL . . 2-27

5.4.1 Base Bias Voltage Factor In Manual Image Density Mode 2-28

5.4.2 Base Bias Voltage Factor In Automatic Image Density Mode 2-28

5.4.3 Image Bias Voltage Adjustment Factor . . . . . . . . 2-29

5.4.4 Drum Residual Voltage (Vr) Correction Factor . . . . . 2-30

5.5 DEVELOPMENT BIAS CIRCUIT . . . . . . . . . . . . 2-31

6. TONER DENSITY DETECTION AND TONER SUPPLY . . . . 2-32

6.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-32

6.2 ID SENSOR FUNCTION . . . . . . . . . . . . . . . 2-33

6.2.1 Detect Supply Mode . . . . . . . . . . . . . . . 2-33

6.2.2 Fixed Supply Mode . . . . . . . . . . . . . . . 2-34

6.3 ABNORMAL CONDITI ON IN T ONE R DENSITY DETECTION 2-34

6.4 DEVELOPMENT BIAS VO LTAGE FOR TONER DENSITY

DETECTION . . . . . . . . . . . . . . . . . . . . 2-35

6.5 TONER SUPPLY AND AGITATOR DRIVE ME CHANI SM . . . 2-36

6.6 TONER SUPPLY AMOUNT . . . . . . . . . . . . . . 2-37

6.6.1 Detect Supply Mode (SP30 = 0) . . . . . . . . . . 2-37

6.6.2 Fixed Supply Mode (S P3 0 = 1) . . . . . . . . . . . 2-39

6.7 TONER END CONDI TION . . . . . . . . . . . . . . 2-40

6.7.1 Near Toner En d Co nd ition . . . . . . . . . . . . . 2-40

6.7.2 Toner End Condition . . . . . . . . . . . . . . . 2-40

6.7.3 Toner End Reco very . . . . . . . . . . . . . . . 2-41

7. IMAGE TRANSFER AND PAPER SEPARATION . . . . . . . 2-42

7.1 IMAGE TRANSFER . . . . . . . . . . . . . . . . . 2-42

7.2 PAPER SEPARATION . . . . . . . . . . . . . . . . 2-42

7.3 TRANSFER/SEPARATION CORONA CIRCUIT . . . . . . 2-43

8. DRUM CLEANING . . . . . . . . . . . . . . . . . . . 2-44

8.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-44

8.2 DRIVE MECHANISM . . . . . . . . . . . . . . . . 2-45

8.3 USED TONE R OV ERFLOW DETECTION . . . . . . . . 2-46

9. PAPER FEED AND REGISTRATION . . . . . . . . . . . . 2-47

9.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-47

9.2 PAPER LIFT MECHANISM . . . . . . . . . . . . . . 2-48

9.3 PAPER LENGTH DETECTION (Paper Feed Station) . . . . 2-49

9.4 PAPER FEED DRIVE MECHANISM . . . . . . . . . . 2-50

9.5 BY-PASS FEED TABLE (By-pass Auto Feed Mechanism) . . 2-51

9.6 PAPER REGISTRATION . . . . . . . . . . . . . . . 2-52

9.7 PAPER FEED AND MISFEED DETE CTION TIMING . . . . 2-53

10. IMAGE FUSING . . . . . . . . . . . . . . . . . . . 2-54

10.1 OVERVIEW . . . . . . . . . . . . . . . . . . . . 2-54

10.2 FUSING DRIVE MECHANIS M A ND CO VE R S AFE TY SWITCH 2-55

10.3 FUSING LAMP CONTRO L CIRCUIT . . . . . . . . . . 2-56

10.3.1 Phase Control Mod e . . . . . . . . . . . . . . 2-57

10.3.2 Overheat Protection . . . . . . . . . . . . . . . 2-57

10.4 FUSING LAMP CONTRO L . . . . . . . . . . . . . . 2-58

10.5 ENERGY SAVER FUNCTION . . . . . . . . . . . . . 2-59

3. INSTALLA TION

1. INSTALLA TION REQUIREMENTS . . . . . . . . . . . . . 3-1

1.1 ENVIRONMENT . . . . . . . . . . . . . . . . . . 3-1

1.2 MACHINE LEVEL . . . . . . . . . . . . . . . . . . 3-1

1.3 MINIMUM SPACE REQUIREMENTS . . . . . . . . . . 3-2

1.4 POWER REQUIREMENTS . . . . . . . . . . . . . . 3-2

2. INSTALLA TION PROCEDURE . . . . . . . . . . . . . . 3-3

2.1 ACCES SO RY CHECK . . . . . . . . . . . . . . . . 3-3

2.2 COPIER INSTALLATION PROCEDURE . . . . . . . . 3-4

2.3 KEY COUNTER HOLDER INSTALLATION (OPTION) . . . . 3-10