Punch Operation
The Punching is an operation performed by a punch to make specific number of holes in paper. The punch is driven by the punch
motor (M301) via a cam. Its home position is detected by the punch HP sensor 1 (PS303) and punch HP sensor 2 (PS304).
During punching, the punch motor (M301) drives to turn the cam, causing the punch to move up and down to make holes in paper.
Punch Motor (M301)
Punch Motor Clock
Sensor (PS305)
Cam
Punch
Sensor Flag 1
Punch HP Sensor 1 (PS303)
Punch HP Sensor 2 (PS304)
Paper
Sensor Flag 2
The punch position is detected by the combination of the punch HP sensor 1 (PS303) and punch HP sensor 2 (PS304).
The following illustration shows examples of the different combinations of the sensor and cam positions.
[The hole is punched
when lowering the punch]
[when rising the punch]
Cam
Punch
Sensor Flag 1
Punch HP Sensor 1
(PS303)
Paper
Sensor Flag 2
Punch HP Sensor 2
(PS304)
OFF
ON
OFF
OFF
OFF
ON
OFF
ON
The relationship between the sensors and punch position is shown below.
2. Technical Explanation
27
Summary of Contents for 2/3 Hole Puncher Unit-A1
Page 1: ...Revision 1 0 2 3 Hole_2 4 Hole_4 Hole Puncher Unit A1 Service Manual ...
Page 10: ...Product Overview 1 Features 5 Specifications 6 Names of Parts 9 ...
Page 21: ...4 The paper is fed to the finisher feeding unit Paper 2 Technical Explanation 15 ...
Page 24: ...4 The paper is fed to the finisher feeding unit Paper 2 Technical Explanation 18 ...
Page 41: ...Periodical Service 3 Periodical Service Operation Item 36 ...
Page 43: ...Disassembly Assembly 4 List of Parts 38 Motor 40 PCB 41 ...
Page 49: ...Adjustment 5 Basic Adjustments 44 Adjustments When Replacing Parts 48 ...
Page 70: ...APPENDICES Service Tools 65 General Circuit Diagram 66 ...