Ricoh SP 200 Specifications download pdf (Page 235)

IMPORTANT SAFETY NOTICES ?..............................................................................................

OVERALL MACHINE INFORMATION ?......................................................................................

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

2. MACHINE CONFIGURATION 1-4 1-4....................................................................................

3. PAPER PATH 1-5 1-5..............................................................................................................

4. MECHANICAL COMPONENT LAYOUT 1-6 1-6......................................................................

5. ELECTRICAL COMPONENT DESCRIPTIONS 1-8 1-8...........................................................

6. DRIVE LAYOUT 1-11 1-11.........................................................................................................

7. COPY PROCESS 1-12 1-12......................................................................................................

7.1 OVERVIEW 1-12 1-12..............................................................................................................................

8. BOARD STRUCTURE 1-14 1-14...............................................................................................

8.1 OVERVIEW 1-14 1-14..............................................................................................................................

8.2 DESCRIPTION 1-15 1-15.........................................................................................................................

DETAILED SECTION DESCRIPTIONS ?....................................................................................

1. SCANNING 2-1 2-1..................................................................................................................

1.1 OVERVIEW 2-1 2-1................................................................................................................................

1.2 SCANNER DRIVE 2-2 2-2......................................................................................................................

1.3 ORIGINAL SIZE DETECTION IN PLATEN MODE 2-3 2-3...................................................................

2. IMAGE PROCESSING 2-5 2-5.................................................................................................

2.1 OVERVIEW 2-5 2-5................................................................................................................................

2.2 SBU (SENSOR BOARD UNIT) 2-6 2-6..................................................................................................

2.3 AUTO IMAGE DENSITY (ADS) 2-7 2-7.................................................................................................

2.4 IPU (IMAGE PROCESSING UNIT) 2-8 2-8............................................................................................

2.4.1 Overview 2-8 2-8.............................................................................................................................

2.4.2 Image Processing Path 2-9 2-9......................................................................................................

2.4.3 Auto Shading 2-10 2-10....................................................................................................................

2.4.4 Filtering and Main Scan Magnification/Reduction 2-11 2-11............................................................

2.4.5 Gamma (g) Correction 2-13 2-13......................................................................................................

2.4.6 Gradation Processing 2-13 2-13.......................................................................................................

2.4.7 Line Width Correction 2-15 2-15.......................................................................................................

2.5 MSU (MEMORY SUPER-CHARGER UNIT) 2-16 2-16............................................................................

2.6 FCI (FINE CHARACTER AND IMAGE) 2-17 2-17...................................................................................

3. LASER EXPOSURE 2-18 2-18.................................................................................................

3.1 OVERVIEW 2-18 2-18..............................................................................................................................

3.2 OPTICAL PATH 2-19 2-19.......................................................................................................................

3.3 GRADATION CONTROL (LASER POWER MODULATION) 2-20 2-20..................................................

3.4 AUTO POWER CONTROL (APC) 2-21 2-21...........................................................................................

3.5 LD SAFETY SWITCHES 2-22 2-22..........................................................................................................

4. PCU (PHOTOCONDUCTOR UNIT) 2-23 2-23...........................................................................

4.1 OVERVIEW 2-23 2-23..............................................................................................................................

4.2 DRIVE MECHANISM 2-24 2-24...............................................................................................................

4.3 NEW PCU DETECTION MECHANISM 2-25 2-25...................................................................................

4.4 DRUM CHARGE 2-26 2-26......................................................................................................................

4.4.1 Overview 2-26 2-26...........................................................................................................................

4.4.2 Charge Roller Contact Mechanism 2-27 2-27...................................................................................

4.4.3 Drum Charge Roller Cleaning 2-28 2-28..........................................................................................

4.4.4 Temperature Compensation 2-29 2-29.............................................................................................

4.5 DEVELOPMENT 2-30 2-30......................................................................................................................

4.5.1 Overview 2-30 2-30...........................................................................................................................

4.5.2 Drive Mechanism 2-31 2-31..............................................................................................................

4.5.3 Mixing 2-32 2-32...............................................................................................................................

4.5.4 Development Bias 2-33 2-33............................................................................................................

4.5.5 Toner Density Control 2-34 2-34.......................................................................................................

4.5.6 Toner Supply in Abnormal sensor Conditions 2-37 2-37..................................................................

4.5.7 Toner Supply 2-38 2-38....................................................................................................................

4.6 DRUM CLEANING AND TONER RECYCLING 2-42 2-42.......................................................................

4.6.1 Drum Cleaning 2-42 2-42..................................................................................................................

4.6.2 Toner Recycling 2-43 2-43................................................................................................................

5. PAPER FEED 2-44 2-44............................................................................................................

5.1 OVERVIEW 2-44 2-44..............................................................................................................................

5.2 PAPER TRAY 2-45 2-45..........................................................................................................................

5.2.1 Paper Feed Drive Mechanism 2-45 2-45..........................................................................................

5.2.2 Paper Lift Mechanism 2-46 2-46.......................................................................................................

5.2.3 Paper End Detection 2-47 2-47........................................................................................................

5.2.4 Side Fence Double Stopper Mechanism 2-48 2-48.........................................................................

5.2.5 Paper Size Detection 2-49 2-49........................................................................................................

5.3 BY-PASS FEED 2-50 2-50.......................................................................................................................

5.3.1 Overview 2-50 2-50...........................................................................................................................

5.3.2 Paper Feed Mechanism and Paper End Detection 2-51 2-51..........................................................

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Ricoh SP 200 Specifications Page 235

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