Booklet maker unit electrical circuitry
The saddle-stitcher controller PCA has a microprocessor that controls the sequence of operations
and that handles serial communications with the stacker controller PCA. This includes driving
solenoids and motors in response to the commands from the stacker controller PCA. The saddle-
stitcher controller PCA is also used to communicate the state of various sensors and switches to the
stacker controller PCA. The functions of the major ICs mounted on the saddle stitcher controller PCA
are as follows:
●
IC7 (CPU): Controls the sequence of operations. Contains the sequence program
●
IC8 (communications IC): Communicates with the finisher unit
●
IC512 (regulator IC): Generates 5 Vdc
●
IC10 (regulator IC): Communicates with the product
Figure 1-122 Electrical circuitry for the booklet maker unit
Sensor
Switch
IC7 CPU
IC10
Regulator IC
IC8
Communi-
cations IC
Saddle stitcher
controller PCA
Motor
Solenoid
Product
(Host machine)
Stacker controller
PCA
IC512
Regulator IC
Feed drive system
The stacker unit stacks paper delivered from the product, offsets stack jobs, and staples and delivers
paper to the outputs according to commands from the product. The booklet maker unit carries, aligns,
and stitches paper delivered from the product, and then feeds the resulting stack. After these
operations, the booklet maker unit folds the stacks of paper and delivers them to the booklet-maker-
unit output bin. The delivery methods are shown in the following figure.
Figure 1-123 Feed drive for the stacker unit
Method of delivery
Normal
delivery
Simple stacking
Stack job offset
Staple
Front 1-point stapling
2-point stapling
Saddle stitch delivery
Rear 1-point stapling
168 Chapter 1 Theory of operation ENWW
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