Canon IMAGERUNNER 7105 Service Manual Download

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Contents

5.3.2

......................................................................................................................... 5- 10

5.3.2.1

Changing the Reproduction Ratio in Main Scanning Direction

................................................ 5- 10

5.3.2.2

Changing the Reproduction Ratio in Sub Scanning Direction <iR7105/7095>

..................... 5- 10

5.3.2.3

Changing the Reproduction Ratio in Sub Scanning Direction <iR7086>

............................... 5- 10

5.3.3

Controlling the Scanning Lamp

............................................................................................................ 5- 11

5.3.3.1

Overview <iR7105/7095>

.............................................................................................................. 5- 11

5.3.3.2

Overview <iR7086>

........................................................................................................................ 5- 11

5.3.3.3

Scanning Lamp

................................................................................................................................ 5- 12

5.3.3.4

Controlling the Activation

............................................................................................................... 5- 12

5.3.4

Detecting the Size of Originals

............................................................................................................. 5- 12

5.3.4.1

Overview

........................................................................................................................................... 5- 12

5.3.4.2

Points of Measurement Used for Original Size Identification

................................................... 5- 12

5.3.4.3

Overview of Operation <iR7105/7095>

....................................................................................... 5- 14

5.3.4.4

Overview of Operation <iR7086>

................................................................................................. 5- 15

5.3.5

Dirt Sensor Control

................................................................................................................................. 5- 17

5.3.5.1

Dust Detection in Stream Reading Mode <iR7105/7095>

....................................................... 5- 17

5.3.5.2

Dust Detection in Stream Reading Mode <iR7086>

................................................................. 5- 18

5.3.5.3

White Plate Dust Detection Control

.............................................................................................. 5- 19

5.3.6

Image Processing

................................................................................................................................... 5- 20

5.3.6.1

Overview <iR7105/7095>

.............................................................................................................. 5- 20

5.3.6.2

Overview <iR7086>

........................................................................................................................ 5- 21

5.3.6.3

CCD Drive <iR7105/7095>

............................................................................................................ 5- 22

5.3.6.4

CCD Drive <iR7086>

...................................................................................................................... 5- 22

5.3.6.5

CCD Output Gain Correction, Offset Correction

........................................................................ 5- 23

5.3.6.6

CCD Output A/D Conversion

........................................................................................................ 5- 23

5.3.6.7

Outline of Shading Correction

....................................................................................................... 5- 23

5.3.6.8

Shading Adjustment

........................................................................................................................ 5- 23

5.3.6.9

Shading Correction

......................................................................................................................... 5- 23

5.4

Parts Replacement Procedure

.................................................................................................................... 5- 24

5.4.1

CCD Unit

.................................................................................................................................................. 5- 24

5.4.2

Copyboard glass

..................................................................................................................................... 5- 24

5.4.3

Standard White Plate

............................................................................................................................. 5- 26

5.4.4

Scanning Lamp

....................................................................................................................................... 5- 26

5.4.5

Reader Controller PCB

.......................................................................................................................... 5- 29

5.4.6

Interface PCB

.......................................................................................................................................... 5- 31

5.4.7

Inverter PCB

............................................................................................................................................ 5- 33

5.4.8

Scanner Motor

......................................................................................................................................... 5- 33

5.4.9

ADF Open/Close Sensor

....................................................................................................................... 5- 35

5.4.10

Original Size Sensor

............................................................................................................................ 5- 36

5.4.11

Scanner Home Position Sensor

......................................................................................................... 5- 37

5.4.12

Cooling Fan

........................................................................................................................................... 5- 39

5.4.13

Scanner Drive Cable

............................................................................................................................ 5- 40

Chapter 6 Laser Exposure

6.1

Construction

..................................................................................................................................................... 6- 1

6.1.1

Outline of the Laser Exposure System

................................................................................................. 6- 1

6.2

Basic Sequence

.............................................................................................................................................. 6- 3

6.2.1

Basic Sequence of Operations (laser exposure system)

................................................................... 6- 3