Samsung Xpress M2880FW - Engine F;W Control Algorithm; Feeding; Transfer

2.Productspecandfeature
2.2.6.EngineF/WControlAlgorithm
2.2.6.1.Feeding
Iffeedingfromacassette,thedriveofthepickuprolleriscontrolledbycontrollingthesolenoid.Theon/offofthe
solenoidiscontrolledbycontrollingthegeneraloutputportortheexternaloutputport.Whilepapermoves,occurrence
ofJamisjudgedasbelow.
ItemDescription
JAM0•Afterpickingup,papercannotbeenteredbecausetopaperisnotfed.
•Afterpickingup,paperenteredbutitcannotreachtothefeedsensorinpredeterminedperiodof
time.duetoslip,etc.
•Afterpickingup,ifthefeedsensorisnoton,re-pickup.Afterre-pickingup,ifthefeedsensoris
notonaftercertaintime,itisJAM0.
•Eventhoughthepaperreachestothefeedsensor,thefeedsensordoesn’tbeON.
JAM1•Aftertheleadingedgeofthepaperpassesthefeedsensor,thetrailingedgeofthepapercannotpass
thefeedsensorafterpredeterminedperiodoftime.
•Aftertheleadingedgeofthepaperpassesthefeedsensor,thepapercannotreachtheexitsensor
afterpredeterminedperiodoftime.
*Thepaperexistsbetweenthefeedsensorandtheexitsensor.
JAM2Afterthetrailingedgeofthepaperpassesthefeedsensor,thepapercannotpasstheexitsensorpredetermined
periodoftime.
2.2.6.2.Transfer
Thechargingvoltage,developingvoltageandthetransfervoltagearecontrolledbyPWM(PulseWidthModulation).The
eachoutputvoltageischangeableduetothePWMduty.Thetransfervoltageadmittedwhenthepaperpassesthetransfer
rollerisdecidedbyenvironmentconditions.Theresistancevalueofthetransferrollerischangedduetothesurrounding
environmentortheenvironmentoftheset,andthevoltagevalue,whichchangesduetotheenvironments,ischanged
throughADconverter.Thevoltagevalueforimpressingtothetransferrollerisdecidedbythechangedvalue.
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