Panasonic Workio DP-C305, Service Manual

Page: 799 / 920

799
DP-C405/C305/C265
FEB 2008 Ver. 1.1
b. 2-/3-Hole Type
The home position is identified when the Punch Home Position Sensor is ON. To make two holes,
the punching operation for the first sheet ends when the Punch Shaft rotates 180
°
(half
circumference) and the Punch Home Position Sensor goes ON. At this time, the 3-Hole Puncher
makes a single round trip in escape direction (moving up the Hole Puncher) on a half circumference
of the Punch Shaft.
The punching operation for the second sheet ends when the Punch Shaft has rotated 180
°
counter-
clockwise and the Punch Home Position Sensor goes ON (half circumference). At this time, the 3-
Hole Puncher makes a single round trip in escape direction (moving up the Hole Puncher) on the
other half circumference of the Punch Shaft.
The punching operation takes place as follows when making two holes in two sheets of paper:
1) A hole is made along the trailing edge of the 1st sheet.
Fig. 2-051
While two holes are being made, the 3-Hole Puncher makes a single round trip in escape
direction.
Fig. 2-052
2) Holes are made along the trailing edge of the 2nd sheet.
Fig. 2-053
Punch Home Position
Sensor (PI1P)
Sensor Flag
Punch Shaft
Eccentric Cam
Hole
Puncher
Die
Die
(Punch Shaft at Rest/
Home Position)
(Punch Shaft CW Rotation
by 90 /Hole Made)
(Punch Shaft CW Rotation by 180 /
End of Punching Operation)
Paper
Waste Paper
(Punch Shaft at Rest/
Home Position)
(Punch Shaft CW Rotation by 90 /
Punch at Upper Limit)
(Punch Shaft CW Rotation by 180 /
Punch Back to Limit Position)
(Punch Shaft at Rest/
Home Position)
(Punch Shaft CCW Rotation
by 90 /Hole Made)
(Punch Shaft CCW Rotation by 180 /
End of Punching Operation)