Panasonic DP-3510 Service Manual page 586

Digital imaging system

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11.1.4.2.2. Punch Operation

The Hole Puncher is driven by the Punch Motor (M1P). The hole puncher home position is detected by the

Punch Home Position Sensor (PI3P).

In all there are four types of Punch Unit depending on the destination: 2- hole type (Punch Unit A1), 2-/3-

hole Dual Use (Punch Unit B1), and two 4-hole types (Punch Unit C1 and Punch Unit D1). With the 2-hole

and 4-hole types, the Hole Puncher is moved reciprocally and punching is performed by the Punch Shaft

rotating 180° from its home position. With the 2-/3-hole dual use type, too, the Hole Puncher is moved

reciprocally and punching is performed by the Punch Shaft rotating 180° from its home position. However,

half of the peripheral area of the Punch Shaft can be used as a 2-hole type while the other half can be as a

3-hole type. Whether the Punch Shaft is used as a 2-hole punch or a 3-hole punch depends on the

instructions from the Copier.

1. 2- / 4-hole Type

At the home position, the Punch Home Position Sensor is ON. Punching of the first sheet ends when

the Punch Shaft has rotated in the forward direction 180°, and the state of the Punch Home Position

Sensor has changed from OFF to ON. Punching of the second sheet ends when the Punch Shaft has

rotated in the reverse direction 180°, and the state of the Punch Home Position Sensor has changed

from OFF to ON.

The following illustrates when two sheets are punched.

a. A hole is punched in the trailing edge of the first sheet.

Sensor (PI3P)

[punch shaft

stopped/home

DP-3510/3520/3530/4510/4520/4530/6010/6020/6030

[punch shaft is

[punch shaft is rotated

rotated 90 in the

180 in the forward

forward direction/

direction/punch

hole punched]

operation completed]

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