Ricoh D391, Service Manual

Page: 413 / 490

[1] Spine Fold Plate: Left
[2] Spine Fold Plate: Right
[3] Signature
[4] Cover
[5] Glued Spine
[6] Left Cover Transport Guide
[7] Main Grip Unit
[8] Spine Plate
The spine fold motor: left (M28) and spine fold motor: right (M29) switch on and move the left spine fold
plate [1] and right spine fold plate [2] to their home positions from the spine fold close positions. The motors
run long enough to separate the plates so the gap between them is large enough for the signature [3] to
pass between them and stop. The run time is prescribed based on the signature thickness measured by the
signature thickness sensor (S50).
The cover [4] is on the cover transport unit with the glued spine [5] of the signature above.
The cover guide motor: left (M15) turns on, opens the left cover transport guide [6] and releases the cover
from the nips of the transport rollers.
The main grip lift motor (M22) turns on, lowers the main grip unit [7] holding the signature , and presses
the glued spine onto the center of the cover supported by the spine plate [8].
Book Binding
411
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