Xerox 2750 manual Document inversion, Crossfolder, First crossfold action

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Document inversion

For most documents the accordion folding procedure is exactly as described above. (Bookfolds require a modified form of accordion folding.) In the first phase of the standard procedure [1], the leading edge of the document is deflected downward to make contact with the folding drum. Certain document types require the document to be deflected upward in the first phase, this being necessary to present the packet with title block in the correct orientation relative to the crossfold blades. Inversion of the leading edge in this way applies to certain documents, such as those with title block trailing and long edge leading (“LEL” orientation, Chapter 4).

Other document types require another form of inversion in which the entire accordion folded packet is flipped upside down before entering the crossfold section. This procedure, again necessary for title block positioning, is accomplished at the end of the folding sequence by reversing the drum through one almost complete revolution, thus inverting the packet as it exits the accordion folder.

Section 2: The Crossfolder

Once the accordion sequence is completed, the folded packet exits to the rear of the accordion fold section and then enters the crossfold section. If no crossfold has been called for, the accordion folded packet is propelled to the rear of the crossfold section and is then ejected into the rear receiving tray. If crossfolds are required, the packet is arrested at the rear of the crossfold section by a guide fence which maintains the packet at right angles to the upper crossfold blade.

 

Upper crossfold blade

Accordion

Packet shifts

folded packet

 

left-right

Upper

 

crossfold

 

fold

 

rolls

 

[1] First crossfold action

The accordion-folded packet is precisely located under the crossfold blade, which is then “fired” downward by solenoid action. Some fold programs call for the upper blade to act as a diverter, like the lower blade in [2].

When stopped by the guide fence, the accordion folded packet is driven from left to right to position it under the blade, which then makes the first crossfold by driving the packet downward into the upper crossfold fold rolls [1].

If only one crossfold is called for [2], the lower crossfold blade acts simply as a diverter, pushing the descending packet through the lower crossfold fold rolls, and then out to the crossfold receiving tray at left (viewed from the rear of the crossfold section).

2750 op#3 R3.doc 10-02

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Contents PRINTFOLD Synergix Fold System Engineering Document Folder General information Synergix Fold SystemMain components of the Model 2750 Folder Operator’s control panel Power entry module / counter / communications portMain control panel Bridge Instant service accessStacker/Handfeed Automatic document diversionManual 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 overviewKey facts about fold programs SEL = standard feed directionLEL = non-standard feed direction Width sensors at input end of bridge Options available Main features of the 2750 folding systemAfter installation Power entry panelModel 2750 Folder operator’s side ½ x 11 C-folded packet, landscape style Operator’s controls12 Z-folded packet, portrait style BkaZ ½ x 11 book-folded packet Z fold onlyStart-up Fold Selection Host controllerFold Selection Standalone Reset procedureOn-line programs Hand feed 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 conditionsIf the document is visible Bridge and Bridge ExitRaising the bridge lid Unlocking the bridgeAccess to the tower TowerRaising the bridge Accordion Folder Use the jog feature …Accordion folder lid in raised position Opening the upper clam shellUsing the crank handle to rotate the drum Raising the drum faceplate shutterEjector springs on crank handle Crossfolder Crossfolder latchesUpper section of the crossfolder in raised position Crossfold Pocket and Crossfold Exit Crossfold TransferCrossfolder rear panel Unhitching the accordion and cross folderInterlock Open Crank handle engaged in crossfold rollCrossfold pocket System Error Initial phase of the folding program Accordion FolderIn-feed and accordion folding components Panel measuring phase Drum reversal develops a loopCompletion of the first fold Accordion fold compensating panels Starting the second foldDocument inversion CrossfolderFirst crossfold action Double crossfold mode Single crossfold modeSystem Menu Operator’s control panelCommunications mode PasswordsJog functions Parameter viewing and modificationDevice test Accessible only to the Key Operator and technicianRecent errors Activity countersSheets 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
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