Drive Mechanism
The punch motor drives the punch unit so the rotation of the punch shaft matches the timing of paper feed for punching. The punch shaft waits at the standby position, and when paper punching is selected for the job once the registration sensor go OFF after detecting the trailing edge of the paper, paper will stop briefly under the punch position and wait for the punch motor to switch ON and punch the paper. The positions of the punch holes can be adjusted with SP codes and shims.
No. | Name | No. | Name |
|---|---|---|---|
1 | Punch movement motor | 4 | Punch motor |
2 | Punch Unit HP sensor | 5 | Timing Belt |
3 | Punch Horizontal Registration Sensor | 6 | Punch Position |
Punch-out Collection
Punch-outs are collected in a punch-out hopper [A] located under the punch unit. The hopper is provided with a punch-out full sensor [B], and when the level of collected punch-outs reach this sensor, it signals that the hopper is full. If a job is in progress when the hopper becomes full, the hopper full alert will not display on the operation panel until after completion of the job.
Also, there is a set sensor for the punch-out hopper that triggers a hopper not set alert when the hopper is out of the unit.
Punch Unit Horizontal Registration
- [A]: Front
- [B]: Rear
- [C]: 7.5 mm
[1] | Punch unit |
[2] | Paper position sensor (CIS) |
[3] | HP sensor |
[4] | Center punch hole |
[5] | Paper path center |
The paper position sensor (CIS) is located upstream of the punch unit [2].
- This sensor detects the paper position, and then based on this sensor reading the position of the punch unit is moved to the front or rear to adjust to the center of the paper (horizontal registration).
- Normally, the punch unit is at standby at it home position 7.5 mm to the front of center of the center of the paper path.
- When the CIS detects the paper position, the punch unit moves and adjusts its position based on the CIS reading
- After the punch unit is positioned over the paper, the unit punches the paper.
- After the holes have been punched, the punch unit returns to its home position and waits for the next sheet to feed.
- As soon as the CIS detects the position of the next sheet, it is punched in the same was as the first sheet (the position of the punch unit is adjusted for each sheet based on the CIS reading).
- The position of the punch unit is positioned in this way before each sheet of paper is punched.