DOWNLOAD Sharp MX-FN21 / MX-FN22 (serv.man4) Service Manual ↓ Size: 18.63 MB | Pages: 127 in PDF or view online for FREE

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TECHNICALDESCRIPTIONS>SaddleStitcherSection

TECHNICALDESCRIPTIONS>SaddleStitcherSection

Rollerguidewidthcontrol

Whentherollerguidewidthandthesaddleprocesstraywidtharetoogreatforthinpaper,
paperbundleiswarpedandalignmentoperationcannotbeperformedproperly.
For thin paper, therefore, make the roller guide width and the saddle process tray width
narrower than for the other paper. When several sheets of paper are sent to the saddle
processtray,thewidthisextendedaccordingtothepaperwidth.Everytimewhen5sheets
ofpaperaresenttothesaddleprocesstray,thewidthisextendedbythespecifiedamount

Gear

Slide rack

Shutter
shift block

Roller guide

Saddle process tray

Shutter
shift base

F-2-41

F-2-41

The roller guide width and the saddle process tray width vary according to the position
of the shutter shift block (hereinafter abbreviated as shift block). The shift block is lifted
by the saddle roller guide motor (FSM204). Since the shutter block is in contact with the
shuttershiftbaseatthebeginning,itshiftswithafixedwidth.Whenitreachestheedgeof
the shutter shift base, it starts shifting so that the width is narrowed. For thin paper, the
shift block is lifted until the specified width is reached. Then after that, the shift block is
descendedforevery5sheetstowidenthewidth.

Saddle roller guide
motor (FSM204)

Slide rack

Saddle roller
guide HP sensor
(FSS207)

Shutter
shift block

Shutter shift base

Saddle process tray

Roller guide

Slide rack

Shutter
shift base

Shutter
shift block

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F-2-42

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TECHNICALDESCRIPTIONS>SaddleStitcherSection

TECHNICALDESCRIPTIONS>SaddleStitcherSection

Alignmentoperation

1) Opentherearedgeholder,andseparatethealignmentrollerandthetakeuproller.Shift

thealignmentguidetothepapersizetoalignthepaperbundle.

Flap plate

Takeup roller

Alignment
guide

Alignment
roller

Rear edge

holder

Paper

Alignment

guide

Lead edge

stopper

Flap plate

Takeup roller

Alignment

guide

Alignment

roller

F-2-43

F-2-43

2) Groundthealignmentrolleragain,pushthepaperontotheleadedgestopper,andflap

therearedgeofpaperwiththeflapplate.

Flap plate

Takeup roller

Alignment

guide

Alignment

roller

Rear edge

holder

Paper

Alignment

guide

Lead edge

stopper

Flap plate

Takeup

roller

Alignment

guide

Alignment

roller

F-2-44

F-2-44

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TECHNICALDESCRIPTIONS>SaddleStitcherSection

TECHNICALDESCRIPTIONS>SaddleStitcherSection

3) Separate the alignment roller, and press the rear edge of paper with the rear edge

holder.

Flap plate

Takeup roller

Alignment

guide

Alignment

roller

Rear edge

holder

Paper

Alignment

guide

Lead edge

stopper

Flap plate

Takeup roller

Alignment

guide

Alignment

roller

4) Theaboveoperationsareperformedforeverypapertoalignthepaperbundle.

F-2-45

F-2-45

Stitchoperation

1) Onestitcherunitisprovidedinthefrontsideofthemachine,andtheotherintherear

side. After completion of alignment operation, the rear edge holder is released and
stitchingofthepaperbundleisperformedbythestitcherunit.

Stitcher unit

Rear edge

holder

Paper

Staple

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F-2-46

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TECHNICALDESCRIPTIONS>SaddleStitcherSection

TECHNICALDESCRIPTIONS>SaddleStitcherSection

Paperfolding/paperexitoperation

1) Afterloweringthesaddlerollerguide,thesaddleleadedgestoppersolenoid(FSSL205)

isturnedONtogrippaperwiththegripper.

Saddle roller

guide

Paper

Gripper

F-2-47

F-2-47

2) Whilegrippingthepaperbundlewiththegripper,thepaperpositioningplateislowered

toshiftthepaperbundleinthearrowdirection,fittingthestitchpositionandthefolding
positiontogether.

Stitch position

Paper bundle

Folding position

Lead edge

stopper

Gripper

F-2-48

F-2-48