Xerox 2750 Panel measuring phase, Drum reversal develops a loop, Completion of the first fold

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[2] Panel measuring phase

A measured length of the document is taken up by the folding drum.

At the start of the process the drum turns counter-clockwise [1], taking the document through the lower fold roll, then stopping at the point [2], where the distance between the leading edge of the document (A) and the upper fold roll (B) equals the accordion panel width chosen by the operator. At this point the drum reverses [3].

[3] Drum reversal develops a loop

The document continues to be advanced by the in-feed rolls at the same time as it is being driven backward by the drum

The loop (C) caused by the in-feed rolls and drum driving in opposite directions expands to the point where it is trapped by the upper fold roll, thus making the first fold.

[4] Completion of the first fold

Pressure of the fold roll on the drum makes a sharp crease at point C.

2750 op#3 R3.doc 10-02

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Contents PRINTFOLD Synergix Fold System Engineering Document Folder Synergix Fold System General informationMain components of the Model 2750 Folder Operator’s control panel Power entry module / counter / communications portMain control panel Automatic document diversion Instant service accessBridge Stacker/HandfeedManual feed slot Tower in normal folding and bypass modesStandard accordion fold packet Accordion folding overviewType F bookfold packet Folds handle easier than Z-folds Crossfolding overviewSEL = standard feed direction Key facts about fold programsLEL = non-standard feed direction Width sensors at input end of bridge Options available Main features of the 2750 folding systemPower entry panel After installationModel 2750 Folder operator’s side BkaZ ½ x 11 book-folded packet Z fold only Operator’s controls½ x 11 C-folded packet, landscape style 12 Z-folded packet, portrait styleStart-up Fold Selection Host controllerHand feed programs Reset procedureFold Selection Standalone On-line programsRear of diverter tower, showing stacker/off-line components Manual document feedingHand feeding a document To begin hand feedingExiting Handfeed Mode Clearing a jam Jam conditionsUnlocking the bridge Bridge and Bridge ExitIf the document is visible Raising the bridge lidTower Access to the towerRaising the bridge Opening the upper clam shell Use the jog feature …Accordion Folder Accordion folder lid in raised positionRaising the drum faceplate shutter Using the crank handle to rotate the drumEjector springs on crank handle Crossfolder latches CrossfolderUpper section of the crossfolder in raised position Unhitching the accordion and cross folder Crossfold TransferCrossfold Pocket and Crossfold Exit Crossfolder rear panelCrank handle engaged in crossfold roll Interlock OpenCrossfold pocket System Error Accordion Folder Initial phase of the folding programIn-feed and accordion folding components Drum reversal develops a loop Panel measuring phaseCompletion of the first fold Accordion fold compensating panels Starting the second foldCrossfolder Document inversionFirst crossfold action Double crossfold mode Single crossfold modeSystem Menu Operator’s control panelParameter viewing and modification PasswordsCommunications mode Jog functionsDevice test Accessible only to the Key Operator and technicianActivity counters Recent errorsSheets 1s 3 0 5 Description 721p Synergix Fold System 40 & XES 2750 Series fold tablesAfnor Peco Fold MIX Fold BanksFold Bank 1 common European sizes Message Definition Location or type of error Folder Error Messages