Kyocera Mita DF-75, Service Manual

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CHAPTER 2 OUTLINE OF OPERATION
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 circum-
ference of the punch shaft.
The punching operation for the second sheet ends when the Punch shaft has rotated 180°
counterclockwise 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 pa-
per:
1) A hole is made along the trailing edge of the 1st sheet.
(punch shaft at rest/
home position)
(punch shaft CW rotation
by 90˚/hole made)
(punch shaft CW rotation by 180˚/
end of punching operation)
Sensor flag
Punch home position
sensor (PI1P)
Punch shaft
Eccentric cam
Hole
puncher
Die
Die
Paper
Waste paper
F02-602-04