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Ricoh Co. Ltd.

http://www.ricoh.com/

B245-62 / PD-C4

Slide 29

Image Processing – Overview

The illustration shows image processing data flow.

See the notes for a list of the processes done.

Note: The next 13 slides will cover some details of image processing.

The BICU is where the main image processing is done.

The image data from the SBU goes to the IPU (Image Processing Unit) on the BICU
board, which carries out the following processes on the image data:

Auto shading

White/black line correction

ADS

Scanner gamma correction

Magnification (main scan)

Filtering (MTF and smoothing)

ID gamma correction

Binary picture processing

Error diffusion

Dithering

Video path control

Test pattern generation

The image data then goes to the GDI controller.

Note: The IPU and VCU are contained in the same IC (called SCRATCH) on the BICU.

For more information about image processing, refer to the core technology manual.

Содержание B245-62

Страница 1: ...1 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 1 B245 62 Service Training Release date 19 February 2010...

Страница 2: ...aration 13 Drum Cleaning 14 Paper Feed 15 Fusing 16 Troubleshooting 17 Environmental Conservation 1 Product Outline 2 Specifications 3 Installation 4 Machine Overview 5 PM 6 Scanner 7 Image Processing...

Страница 3: ...3 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 3 B245 62 Service Training 1 Product Outline Most recently updated 18 February 2010...

Страница 4: ...om B245 62 PD C4 Slide 4 The Machine This is the machine you will study in this training course Go to the machine and familiarize yourself with it Refer to the operating instructions and FSM for compo...

Страница 5: ...ine Increased Copy Speed Multicopy rate has been increased for the B245 62 18 cpm 19 cpm Front Back Back Front ID Copy The ID Copy function is a requirement of the Chinese market The Chinese ID was ch...

Страница 6: ...Clear Stop key 15 OK key 6 Clear modes key 14 Original key 5 User tools Counter key 13 Escape key 4 Scroll keys 12 Image density keys 3 Selection keys 11 Sort key 2 Display panel 10 ID copy key 1 Ind...

Страница 7: ...7 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 7 B245 62Service Training 2 Specifications No additional notes...

Страница 8: ...Specifications Look over the Specifications section of the FSM for the following comparing these specifications with the previous machine if you are not already familiar with them General Specificatio...

Страница 9: ...9 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 9 B245 62 Service Training 3 Installation No additional notes...

Страница 10: ...no process controls to do After installing the machine and all options and making all test copies record the value of the total counter This is very important because this value will be used for billi...

Страница 11: ...ner of bag for better control when pouring Make sure not to spill developer on gears If you have to turn gear to distribute developer evenly make sure to do so very slowly and as little as possible Ot...

Страница 12: ...coh com B245 62 PD C4 Slide 12 Upgrade the Firmware Install the latest firmware for the machine See Firmware Update Procedure in the FSM System Maintenance Reference Using SP Modes Firmware Update Pro...

Страница 13: ...h Co Ltd http www ricoh com B245 62 PD C4 Slide 13 Set SP Modes Input the product serial number and service contact numbers SP 5811 Serial number SP 5812 Service telephone and fax numbers No additiona...

Страница 14: ...14 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 14 B245 62 Service Training 4 Machine Overview No additional notes...

Страница 15: ...ut Note the major components shown above Locate the components on the machine OPC Fusing unit Transfer roller Paper feed rollers Development unit Laser unit Scanner Scanner motor Paper cassette For a...

Страница 16: ...e fusing unit PCU and development unit Locate all the drive components on your machine Scanner motor Hot roller OPC Drum Development roller Fusing unit PCU Development unit Drive Layout Main motor For...

Страница 17: ...omes in contact with the latent image on the drum surface Toner particles are electrostatically attached to the areas of the drum surface where the laser reduced the negative charge on the drum ID Sen...

Страница 18: ...18 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 18 B245 62 Service Training 5 PM Preventive Maintenance No additional notes...

Страница 19: ...is machine has PM intervals of 60 K and 120 K See PM Tables in the FSM Reset the PM counter after finishing a PM SP 7804 1 See How to Reset the PM Counter in the FSM Other related SP Modes SP 5501 1 P...

Страница 20: ...the PM Tables Refer to PM Tables in the Field Service Manual for details Locate the PM parts on the machine It is not necessary to disassemble units such as the PCU and fusing unit at this time You wi...

Страница 21: ...21 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 21 B245 62 Service Training 6 Scanner No additional notes...

Страница 22: ...enon lamp The image is reflected onto a CCD charge coupled device on the lens block via the 1st 2nd and 3rd mirrors and through the lens on the lens block The 1st scanner consists of the exposure lamp...

Страница 23: ...CU controls and operates the scanner drive motor In full size mode the 1st scanner speed is 100 mm s during scanning The 2nd scanner speed is half that of the 1st scanner In reduction or enlargement m...

Страница 24: ...9 Main scan magnification SP 4010 Leading edge registration SP 4011 Side to side registration SP 4013 Scanner free run exposure lamp off These are the SP Modes related to scanning that are frequently...

Страница 25: ...nd Adjustment Scanner Unit Do any of the procedures that you think you need to practice Pay attention to all notes cautions and warnings in the manual Note the caution about moving the scanner Grasp t...

Страница 26: ...26 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 26 B245 62 Service Training 7 Image Processing No additional notes...

Страница 27: ...an 8 bit digital signal then it sends the digital signal to the BICU board The BICU board can be divided into three image processing blocks the IPU Image Processing Unit FCI Fine Character Image and V...

Страница 28: ...nes mm The CCD has two output lines for odd and even pixels to the analog processing circuit The analog processing circuit performs the following operations on the signals from the CCD 1 Z C Zero Clam...

Страница 29: ...U Image Processing Unit on the BICU board which carries out the following processes on the image data Auto shading White black line correction ADS Scanner gamma correction Magnification main scan Filt...

Страница 30: ...to the notes for details The user can select Text Photo and Special original types However each of these original types has a range of different choices such as sharp photographs etc which are listed...

Страница 31: ...31 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 31 Image Processing Path The diagram shows the various stages of image processing and where they are performed No additional notes...

Страница 32: ...shades of dark colors 4923 Selects the central notch position value for the ID adjustment LEDs 4926 Adjusts the texture removal level used with error diffusion 4927 Adjusts the line width 4928 Selects...

Страница 33: ...the normal variations in CCD pixel response which are very slight when rounded off by white level correction will show up much easier on the copy when the data is divided into 256 gradations Before sc...

Страница 34: ...The density levels of the adjacent pixels are considered When you activate the white line erase feature the feature works for all originals This feature erases the white lines of 1 through 6 pixel wi...

Страница 35: ...eature erases weaker black lines less black lines This SP also affects the width of black lines to be erased If you specify 1 or 2 the feature erases the black lines of 1 through 4 pixel width approxi...

Страница 36: ...ay background is scanned the density of the gray area is the peak white level density Therefore the original background will not appear on copies Because peak level data is taken for each scan line AD...

Страница 37: ...nner gamma curves Text and Photo When selecting Text the machine does not use scanner gamma correction As a result the output is darker than the image density on the original The advantage of this is...

Страница 38: ...scanner speed enables enlargement and reduction along the sub scan direction Enlargement and reduction along the main scan direction is handled by the IPU SCRATCH chip The processing for main scan en...

Страница 39: ...ent Solid If the IPU detects that the dot is not part of an edge the machine applies the MTF filter for solid areas using the value set in SP 4931 The higher the setting the sharper the image However...

Страница 40: ...rrected pixels are compared with an error diffusion matrix Error diffusion is applied when the user selects Text 1 Photo 1 3 and Special 2 and 5 As the final step in error diffusion a process called T...

Страница 41: ...ig A shows the four possible pulse durations and Fig B shows how the laser pulse can be in one of three positions within the pixel Fig C shows an example of how edge smoothing is used Continued in not...

Страница 42: ...42 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 42 B245 62 Service Training 8 Laser Exposure No additional notes...

Страница 43: ...nchronization mechanism The machine cuts off the power supply to the LD drive board if the front or right cover is opened See the notes for the component names 1 LD unit 2 Synchronization detector len...

Страница 44: ...the field See the notes for details The LD driver IC drives the laser diode To prevent the intensity of the laser beam from changing because of the temperature the machine monitors the current passing...

Страница 45: ...C OPC Drum Laser Beam REG LD Safety Switch To ensure technician and user safety and to prevent the laser beam from inadvertently switching on during servicing there are safety switches at the front an...

Страница 46: ...915 Polygon mirror idling time SP 2998 Main scan magnification printer There is also a main scan adjustment for the scanner SP 4009 That one affects the image processing algorithms SP 2998 affects the...

Страница 47: ...h to the laser diode Practice the following Laser unit component replacement procedures See the Field Service Manual for details Replacement and Adjustment Laser Unit Laser Unit Alignment Adjustment T...

Страница 48: ...48 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 48 B245 62 Service Training 9 PCU Photo Conductor Unit No additional notes...

Страница 49: ...o the PCU not being a user replaceable part Some of the components of the PCU are replaced individually at PM When a new PCU is installed new developer must also be installed and SP 2214 must be done...

Страница 50: ...ller With cleaning brush Pick off Pawls Cleaning Unit Counter blade mechanism Edge cleaning mechanism Toner recycling Development Unit Development Roller Charge Roller Cleaning Blade OPC Drum Cleaning...

Страница 51: ...wing OPC drum Development unit including development roller and TD sensor Charge roller and charge roller cleaning brush Drum cleaning unit blade toner collection coil Pick off pawls The PCU does not...

Страница 52: ...drum through a gear train as shown in the illustration Drum Drive Shaft Drum The main motor drives the drum through a series of gears and the drum drive shaft The main motor assembly includes a drive...

Страница 53: ...Co Ltd http www ricoh com B245 62 PD C4 Slide 53 Lab Work Replace the PCU See the field service manual Replacement and Adjustment PCU Section PCU Individual PCU components will be replaced in later s...

Страница 54: ...54 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 54 245 61 Service Training Full Course 10 Drum Charge No additional notes...

Страница 55: ...drum surface voltage is 950 V Drum Charge Roller Terminal Plate Drum Screw Cleaning Roller This copier uses a drum charge roller to charge the drum The drum charge roller always contacts the surface o...

Страница 56: ...ol parameters are balanced so that any small change in drum potential caused by environmental effects is reflected in a change in the amount of toner transferred to the drum This measurement is made i...

Страница 57: ...Production Timing Not for every page or every print or copy job but at the following times During warm up at power on When the machine starts warming up from energy saver mode and the fusing temperatu...

Страница 58: ...Roller to clean off material which the Drum Charge Roller picks up from the Drum A cam gear moves charge roller from side to side to improve cleaning This waste is not recycled Drum Charge Roller Clea...

Страница 59: ...djustment SP 2001 1 Adjusts the voltage applied to the charge roller when printing SP 2001 2 Adjusts the voltage applied to the charge roller when generating the ID sensor pattern SP2001 1 Increasing...

Страница 60: ...60 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 60 B245 62 Service Training 11 Development and Toner Supply No additional notes...

Страница 61: ...lopment system Single development roller Two mixing augers Doctor blade trims the magnetic brush TD sensor helps control image density with ID sensor Doctor blade Development roller Mixing augers TD s...

Страница 62: ...motor is on No development clutch Main motor Development drive shaft Development roller Mixing augers The main motor drives the development roller and mixing augers through a train of gears and the de...

Страница 63: ...developer evenly mixed Prevents lumps from forming Helps create a triboelectric charge on the toner The doctor blade splits the developer into two parts One part goes to the development roller to form...

Страница 64: ...haft This machine uses a negative negative development system in which black areas of the latent image are at a low negative charge about 154 50 V and white areas are at a high negative charge about 9...

Страница 65: ...When the toner bottle holder lever is put back in the original position the cap on the toner bottle is pulled away and kept in place by a chuck The toner supply mechanism transports toner from the bo...

Страница 66: ...2 PD C4 Slide 66 Toner Supply Bottle Drive Toner supply motor turns the bottle To supply fresh toner to development unit toner supply motor turns on Spiral grooves help toner to move towards bottle ex...

Страница 67: ...7 Toner Supply Input to Development Unit The Mylar tabs in the bottle unit push the toner towards the development unit entrance Recycled toner from the drum also arrives at this entrance Recycled tone...

Страница 68: ...and ID sensor Toner is supplied when Vt is higher than Vref There are four toner density control modes set by SP 2921 However SP 2921 should almost always be set to 0 If the TD sensor needs to be repl...

Страница 69: ...l setting the TD sensor is set so that the TD sensor output is the value of SP 2926 default 2 4 V This value will be used as the standard reference voltage Vts of the TD sensor Toner Concentration Mea...

Страница 70: ...re checked compensating for any variations in the reflectivity of the pattern on the drum or the reflectivity of the drum surface The ID sensor pattern is made on the drum by the charge roller and las...

Страница 71: ...erence voltage either Vts or Vref is the threshold voltage for determining whether or not to supply toner If Vt becomes greater than the reference voltage the machine supplies additional toner This ca...

Страница 72: ...time is specified by the setting of SP 2925 and does not vary The default setting is 200 ms for each copy The toner supply motor on time for each value of SP 2925 is shown in the table to the right E...

Страница 73: ...elow T 30 see note 3 Vt Vts or Vref S toner end 7 T 30 see note 3 Vt Vts or Vref 4S 16 near end 6 t x 16 6 4 Vts or Vref Vt Vts or Vref 4S 5 5 t x 8 3 2 Vts or Vref Vt Vts or Vref S 2 4 t x 4 1 6 Vts...

Страница 74: ...Vsg 3 5V when maximum power 979 is applied Vsp 2 5V Vsg Vsp 1 0V Vt 4 5V or Vt 0 2V The above ID sensor values can be checked using SP 2221 When this is detected the machine changes the value of Vref...

Страница 75: ...the TD sensor become abnormal the machine changes the toner density control mode to fixed supply mode 2 and the toner supply amount per page is always 200 ms regardless of the value of SP 2925 If the...

Страница 76: ...y recovers to Vt level 5 near end is cancelled Otherwise toner end occurs after 50 copies If Vt level 7 is detected 3 consecutive times toner end is detected immediately Recovery after adding new tone...

Страница 77: ...77 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 77 B245 62 Service Training 12 Image Transfer and Paper Separation No additional notes...

Страница 78: ...he transfer roller as paper passes between it and the drum attracting the image from the drum to the paper Drum curvature and the discharge plate separate the paper from the drum Pick off pawls preven...

Страница 79: ...oh com B245 62 PD C4 Slide 79 Drive The drum drives the transfer roller through a gear The transfer roller always contacts the drum there is no touch and release mechanism Main motor Transfer roller D...

Страница 80: ...remaining on the drum from transferring to the roller Then a high current is supplied to transfer the image to the paper The amount depends on paper size and type See the table on the next slide This...

Страница 81: ...eed tray by pass tray and transfer roller cleaning can be adjusted Be careful when increasing the transfer current This may cause a ghosting effect in which part of the image at the top of the page is...

Страница 82: ...to transfer roller if A paper jam occurred The paper size is smaller than the printed image The transfer roller must be cleaned to prevent toner from being transferred from the roller to the back side...

Страница 83: ...PD C4 Slide 83 Lab Work Practice replacing the following components Transfer roller ID sensor Not related to transfer but this is a convenient time to practice ID sensor removal as the transfer roller...

Страница 84: ...84 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 84 B245 62 Service Training 13 Drum Cleaning and Toner Recycling No additional notes...

Страница 85: ...e removes any toner remaining on the drum after the image is transferred to the paper This model uses a counter blade system See the Core Technology Manual for more information on cleaning systems The...

Страница 86: ...tor Unit where it is mixed with new toner and used again Toner collection coil Opening Mixing Auger Toner picked up by the toner collection coil is transported to the opening in the side of the PCU Th...

Страница 87: ...efer to the Field Manual for all procedures Pick off pawls and toner density sensor OPC drum Charge roller and cleaning brush Cleaning blade Developer This is optional as you added developer during in...

Страница 88: ...88 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 88 B245 62 Service Training 14 Paper Feed No additional notes...

Страница 89: ...Bypass tray Up to 100 sheets Overview By pass tray Paper tray The paper tray holds 250 sheets The paper tray feed stations use a friction pad system To prevent paper from getting caught inside the ma...

Страница 90: ...hanism of paper tray Paper feed clutch transfers main motor drive to the paper feed roller When the paper feed clutch turns on feed roller starts to feed paper Paper feed clutch Main motor Paper feed...

Страница 91: ...e Spring Friction Pad Paper Feed Roller The paper feed roller drives the top sheet of paper from the paper tray to the copier The friction pad allows only one sheet to feed at a time The friction pad...

Страница 92: ...PD C4 Slide 92 Tray Lift When tray is closed projection on copier frame pushes slider off bottom plate hook Slider is on bottom part of tray After slider comes off compressed springs lift bottom plate...

Страница 93: ...ve the paper tray If there is any paper in the paper tray the paper stack lifts the feeler and the paper end sensor is deactivated When the paper tray runs out of paper the paper end feeler drops into...

Страница 94: ...are actuated by a paper size actuator which is on the front right of the tray Each paper size has its own unique combination of notches To determine which size has been installed the CPU reads which...

Страница 95: ...136 3 GND ON OFF OFF OFF OFF CN136 2 OFF OFF OFF ON OFF CN136 1 A5 SEF 8 x13 A4 SEF A3 CN No BICU More on Paper Size Detection The side guides contain ratchets that turn a gear wheel at the center of...

Страница 96: ...ngly Stoppers More on Side Fences If the tray is full of paper and it is pushed in strongly the fences may deform or bend This may cause the paper to skew or the side to side registration to be incorr...

Страница 97: ...y after the registration clutch turns off so that the paper buckles against the registration roller SP 1003 can be used to adjust the amount of buckling When feeding from the by pass tray the paper fe...

Страница 98: ...paper feed stations SP 1002 Side to side registration for various paper feed stations SP 1003 Paper feed timing Adjusts buckle at the registration roller to prevent skew SP 1903 Feed clutch boost afte...

Страница 99: ...following parts Feed roller Friction pad Optional replacement practice Exit sensor By pass feed roller and paper end sensor Registration roller By pass paper end switch Registration clutch Registrati...

Страница 100: ...100 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 100 B245 62 Service Training 15 Fusing No additional notes...

Страница 101: ...This is a standard heat and pressure fusing system Thin walled hot roller with lamp heat source Pressure roller constantly pressed against hot roller by springs Fusing Lamp Hot Roller Pressure Roller...

Страница 102: ...Drive Fusing unit drive gear disengages when the cover is open for easier jam removal Paper Exit Rollers Timing Belt Main Motor Drive Gear Right Cover Main motor drives fusing unit through gear train...

Страница 103: ...the inner holes The entrance guide is adjustable for paper thickness to prevent creasing The outer screw holes on each side are used as the default setting If creasing occurs frequently in the fusing...

Страница 104: ...pressure The default position is the end notch Fusing Pressure Pressure roller Hot roller Pressure spring Pressure adjustment notches The pressure springs constantly apply pressure between the hot rol...

Страница 105: ...ster The fusing temperature is controlled using a thermistor The CPU checks the output from the fusing thermistor once every second The CPU decides how long the lamps must be switched on during the ne...

Страница 106: ...ult is 175 C G Fusing temp check timing SP1108 default is 1 s Normally leave SP1103 1 at 0 Set SP1103 1 to 1 if fusing quality is low just after warm up Warm up will take longer but fusing quality wil...

Страница 107: ...than 250 C and continues 10 times consecutively 100 ms x 10 1 second SC544 shows on the LCD and the controller turns the fusing lamp off Overheat Fail safe The two thermostats provide overheat fail s...

Страница 108: ...ets the number of zero cross cycles of the fusing lamp AC supply needed to bring the fusing lamp power to 100 while bringing the lamp up to the standby temperature or while copying Normally leave this...

Страница 109: ...b Work Practice replacing the following parts Hot roller Pressure roller Stripper pawls Optional replace the thermistor and thermostats Easy Practice nip width adjustment Refer to the FSM for the deta...

Страница 110: ...110 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 110 B245 62 Service Training 16 Troubleshooting No additional notes...

Страница 111: ...Tools Lubricants Scanner Positioning Pins 4 pins set A0069104 1 set Test Chart S5S 10 pcs set A2929500 1 set 4MB Flash Memory Card N8036701 Grease Barrierta S552R A2579300 Grease Barrierta S552R is te...

Страница 112: ...M contents Memory All Clear SP 5801 More on Memory Clear This is only done after replacing the NVRAM or recovering from NVRAM problems The NVRAM will have to be replaced if you want to install a new t...

Страница 113: ...ww ricoh com B245 62 PD C4 Slide 113 Troubleshooting Done by the User General Settings Guide Troubleshooting See Troubleshooting in the OI Manual and try to imagine some of the mistakes users might ma...

Страница 114: ...by a service representative see the note below Reset Enter SP mode and then turn the main power switch off and on Level B If the SC was caused by incorrect sensor detection the SC can be reset by tur...

Страница 115: ...Self Diagnostics The self diagnostics procedure is automatically done just after the power is switched on SP 7832 Displays Self diagnostics Displays the SC codes and the number of their occurrences E...

Страница 116: ...int SP 5990 Outputs machine status lists 001 All Data List 002 SP Mode Data List 003 User Program 004 Logging Data 005 Big Font The output given by the menu Big Font is suitable for faxing See the FSM...

Страница 117: ...able if fusing on the first two copies is incomplete SP 1108 Fusing temperature control cycle Increase if the user complains about flickering room lights However fusing lamp errors may not be detected...

Страница 118: ...1 1 2 Increase if thicker paper than normal is used in the paper trays SP 2301 4 Increase if there is dirty background on the rear side Also see SP 2996 on the next slide SP 2802 Developer mixing Use...

Страница 119: ...ly This can cause tailing images ghosts of the vertical lines continuing past the bottom of the table Use this SP to shift the image writing position to prevent this problem SP 2996 Transfer Roller Cl...

Страница 120: ...120 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 120 Free Runs SP 4013 Scanner with lamp on SP 5802 Scanner and printer SP 5901 Printer No additional notes...

Страница 121: ...D sensor malfunction but SP2221 gives information on ID sensor condition Input Check SP5803 Use to check switch and sensor condition Output Check SP5804 Use to test electromechanical components Test P...

Страница 122: ...2 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 122 B245 62 Service Training 17 Environmental Conservation Technology for Environmental Conservation Energy Saving Paper Saving No additional note...

Страница 123: ...s 6 Ozone reduction design Improves machine productivity when printing out duplex double sided images 5 High speed duplex copying Allows documentation to be managed digitally cutting down on paper con...

Страница 124: ...for the machine to warm up to the Read condition This is made possible through the utilization of dual fusing lamp heating low fusing point toner a pressure roller with a sponge surface layer and a t...

Страница 125: ...hich allows the benefits of reduced energy consumption and reduced warm up time to be extended to color machines 4 Paper saving features 1 The duplex double sided and Combine features reduce paper con...

Страница 126: ...the Duplex Interleaf and high speed Inverter Transport features 2 Enables quick printing of duplex jobs through the use of Duplex Scanning 6 Ozone reduction design Greatly reduces the machine s ozone...

Страница 127: ...d instead of the conventional pulverization method This allows the toner to fuse at a lower temperature which reduces the impact on the environment and contributes to achieving even higher image quali...

Страница 128: ...rm to the local laws and regulations as well as user requirements in each market in which the products are sold 2 Reduces the noise generated by the polygon mirror motor 9 Minimization of harmful subs...

Страница 129: ...Toner recycling Enables effective use of resources by recycling reusing the toner left over on the drum surface after image transfer 12 Recycle friendly design To maximize the recycling ratio of machi...

Страница 130: ...y Mode Off Sleep Mode Timer Starts Auto Off Timer 1 240 min After 240 min from last job Plug In Time Energy Saving When the machine is not being used the machine enters energy saver mode to reduce the...

Страница 131: ...the default settings should be kept If the customer requests that the setting be changed please explain that their energy costs could increase and that they should consider the effects on the environm...

Страница 132: ...2 PD C4 Slide 132 2 Energy Saving 2 2 Energy Saver Mode Condition of LEDs Condition of LEDs on the operation panel On Off Off Off Sleep Mode On On On Low Power Mode Main Power LED Energy Saver LED Ope...

Страница 133: ...uns out after the last job When the machine enters low power mode the fusing temperature is lowered to 60 C The machine recovers to the ready condition if one of the following occurs The Energy Saver...

Страница 134: ...ine recovers to the ready condition if the operation switch is pressed Power Consumption Warm up Operation Mode Ready Mode Off Mode Plug In Time Operation Switch is pressed Warm up Operation Mode Read...

Страница 135: ...r scanner unit is installed The machine enters sleep mode when one of the following is done The auto off timer runs out after the last job The operation switch is pressed to turn the power off When th...

Страница 136: ...n If data is received After warm up the job starts but the operation panel stays dark Then after the job is completed the machine returns to sleep mode immediately Panel Off and Low Power modes are sk...

Страница 137: ...chine goes to the ready condition Then after the job is completed the machine returns to sleep mode when the auto off timer runs out or the operation switch is pressed This is the same as Off mode Pow...

Страница 138: ...138 Ricoh Co Ltd http www ricoh com B245 62 PD C4 Slide 138 End of Course No additional notes...

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