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Toshiba E-STUDIO900 manual Development, Overview

Models: E-STUDIO900

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Page 73

2.6 DEVELOPMENT

2.6.1 OVERVIEW

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1.	Hopper Filter	8.	Separator
2.	Hopper Center Filter	9.	Toner Transport Coil
3.	Toner Hopper Sensor	10.	Development Agitator
4.	Agitator	11.	TD Sensor
5.	Toner Supply Roller	12.	Paddle Roller
6.	Upper Development Roller	13.	Lower Development Roller
7.	Doctor Blade

This copier uses a double roller development system and a dual component development process with toner particles 6.8 ∝m and developer particles 50 ∝m. To improve image quality, the width of the magnetic area on the lower development roller has been reduced.

This system differs from single roller development systems in that:

•It develops the image in a narrower area

•It develops the image twice

•The relative speed of each development roller against the drum is reduced.

This machine contains a toner recycling system. Toner recycled from the drum cleaning unit is transferred to the toner hopper with fresh toner, where they are mixed by the toner agitator. The mechanism is explained in the Toner Supply and Recycling section.

PTM

2-48

B070/B071

Image 73

Toshiba E-STUDIO900 manual Development, Overview

Contents

Technical Training Program  2003 Tabs Corporation. All rights reserved Page 900 Toshiba1050 Finisher B478 Introduction Page Flowchart for PRE-TRAINING Manual Contents IMPORTANT Safety Notices Laser Safety Safety and Ecological Notes for Disposal Conventions in this Manual Section Overall Information Page Copier Engine Specifications RAM Noise Emission Power Consumption North America Version Unit W 2 ADF Machine Comments Code Machine Configuration Component Layout Overview ADF Paper Path Exposure Copy Process Laser Exposure Section Detailed Descriptions Page PICK-UP Roller Release Document Feeder Bottom Plate Lift PICK-UP and Separation Original Feed Original Length Original Size DetectionOriginal Width Original Width Sensor Location Original Transport Original Skew Correction General Operation Original Inversion and FEED-OUT Original Inversion Original Exit Single-Sided Original Mode Original Exit Double-Sided Original Mode Overview Scanning Magnification and Reduction Scanner Drive Original Size Detection A4 SEF Image Processing Steps and Related SP Modes Image Processing Image Processing Overview Image Processing Flow PTM Image Processing Modes Mode Setting Function PTM Custom Settings for Each Mode Image Quality Image Quality SP AdjustmentsCustom Setting Text Mode Image Quality Custom Setting Photo Mode Error Diffusion Image Quality Custom Setting Photo Mode Dithering Image QualityCustom Setting Text/Photo Mode Image Quality Custom Setting Generation Mode Image Quality Custom Setting Pale Mode Image Quality Custom Setting Text Mode Line Width Correction Custom Settings for Each Mode Line Width CorrectionCustom Setting Photo Mode Line Width Correction Custom Setting Text/Photo Mode Line Width Correction Custom Setting Generation Copy Line Width Correction Custom Setting Pale Mode Line Correction Independent Dot Erase Settings Adjustable for Each Original ModeBackground Erase Text Mode Relation Between the SP and UP SettingsPhoto Mode Dithering Photo Mode Error Diffusion Pale Mode Text/Photo ModeGeneration Copy Laser Exposure Laser Exposure Mechanism Auto Power Control APC LD Safety Switches MULTI-BEAM Line Exposure Polygon Mirror Motor LDA 6 1200-DPI Resolution Optical Path Drum Unit What Happens at Power OnProcess Control Drum Unit Components Drum Drive Overview Drum Charge Charge Corona Wire Cleaning Drum Cleaning Cleaning Unit Drive Cleaning Blade Pressure and Side-to-Side Movement Air Flow Around the Drum Others Drum Pick-off Pawls Drum Quenching Development Development Mechanism Drive Crossmixing Development Bias Toner Supply and Recycling Toner Bank Toner Bottle Switching Mechanism Toner Near-end, Toner End, Bottle Replacement PTM Toner Bottle Sensors Supplying Toner to the Development Unit PTM Toner Supply Toner Hopper Toner Hopper Empty Detection Toner Recycling and Waste Toner Collection Toner Recycling Paper Feed Drive Vertical Transport Paper Registration Image Transfer and Paper Separation Transfer Belt Unit Lift Transfer Belt Cleaning Toner Collection Drum ANTI-CONDENSATION Heater Fusing OIL Supply and Cleaning PTM Near-End Sheets Mode *2 Paper EXIT/DUPLEX Feed-in and Jogging Inverter Feed-out Duplex Tray Feed Mechanism Length up to A4/Letter LEF Basic Duplex Feed Operation PTM Longer than A4/Letter LEF ⇒ 2 ⇒ PTM Energy Conservation Modes Energy Saver Mode Entering the energy saver mode Energy Saver ModeWhat happens in energy saver mode Return to stand-by mode Entering the low power mode LOW Power ModeWhat happens in low power mode Entering auto off mode Auto OFF ModeWhat happens in auto off mode Returning to stand-by mode Night stand-by mode Night ModeNight mode Entering night stand-by and night modes Section Service Tables Page To Enter and Exit the SP Mode Service Program Mode OperationTo Switch to the Copy Window for Test Printing Direct Entry Using the SP Mode Here is a short summary of the touch-panel buttons SP Mode Button Summary Copier Service Program Mode Tables Service Program Mode TablesService Table Key SP1-nnn Feed Entering and Exiting User Program Mode User Program Mode PTM Section Installation Page Environment Installation Requirements Machine Level Copier + Finisher + LCT + By-pass Tray Minimum Space RequirementsCopier + Finisher Side View DimensionsTop View Main Power Switch Power RequirementsOperation Power Switch Copier B070/B071 Accessories Description Qty Section Large Capacity Tray Page 51/2 x81/2 Mechanical Component Layout Overall Mechanical Information Electrical Component Descriptions Symbol Name Function Clutches Symbol Name Function Drive Layout Paper Feed Detailed Descriptions PICK-UP and Feed FRR Separation Roller Release Tray Detection Paper LiftLift Mechanism Lift Sensor Top Tray Tray 1 and Middle Tray Tray Paper Size DetectionBottom Tray Tray Remaining Paper Detection Paper END Detection Section SR860 Booklet Finisher Page Upper Tray SR860 3000 Sheet Booklet Finisher B468Lower Tray Proof Tray Booklet Staple Specifications Staple Specifications Punch Unit B377 Mechanical Compnent Layout Drive Layout PTM Proof Tray Top of the unit Paper is sent to the top tray TRAY/STAPLER Junction Gates PRE-STACKING Vertical Lift Mechanism Height Adjustment During Feed-Out Just After the Power is Switched onUpper Tray Upper Tray Full Lower Tray Lower Tray Height Adjustment During Feed-outPositioning the Lower Tray for Feed-out Lower Tray Full Shift Roller Rotation Shift MechanismShift Roller Horizontal Movement Exit Guide Plate Vertical Alignment Paper PositioningHorizontal alignment Stapling Mechanism Stapler Horizontal Stapler Movement Stapler Movement Rotational Stapler Movement Feed OUT Booklet Stapling and Folding Booklet Finishing Initial Folding Final Folding and FEED-OUT Punch Drive Mechanism Punch Unit B377 Option PTM Punch Waste Collection Section Sheet Finisher Page SR840 3000 Sheet Finisher B478 Specification DIP SW Settings Specification Punch Unit B531 Specification Punch Unit A812 Specification Jogger Unit B513 Mechanical Component Layout Electrical Component Description Symbol Name Function Motors Symbol Name Function Upper Tray Junction Drives the tray junction gate Gate 3 4 Tray and Stapler Junction Gate Upper Tray Mode Sort/Stack Mode Staple Mode Paper PRE-STACKING Jogger Unit Paper Positioning Side-to-Side Stapler Unit Movement Rotation Stapler PTM FEED-OUT Paper Exit Stacking Shift Tray Stand-by Mode Staple Mode Sort/Stack Mode Shift ModeShift Tray UP/DOWN Movement Shift Tray Lower Limit Detection Shift Tray SIDE-TO-SIDE Movement JAM Conditions Punch Unit Drive Punch Unit B531 Option Punch Waste Collection Jogger Unit Mechanical Layout Jogger Unit B513 Option Jogger Unit Drive Section Cover Interposer Tray MJ-7002 Page Cover Interposer Tray Type 1075 B470 Main Layout Overall Machine Information Drive Layout Paper Path Paper Separation and Feed Power OnBottom Tray Lift Paper Near-end Paper Size Detection Table below lists the sensor output for each paper size B070/B071 Paper Size Detection B064/B065 Correct Paper Size Display Section Multi Bypass Tray Page Multi Bypass Tray Type 2105 B512 Overall Machine Information Electrical Component Layout MC9 Electrical Component Descriptions Drive Layout Detailed Descriptions Paper Feed Paper Size Detection Table below lists the sensor output for each paper size B064/B065 Correct Paper Size Display