CHAPTER 4 IMAGE FORMATION SYSTEM

3. AE Adjustment

The copier’s AE adjustment is executed in service mode and consists of the following three types:

lamp intensity automatic adjustment (No. 301) during AE scans

copy density (development bias) standard adjustment (No. 302) during AE mode

copy density (development bias) slope adjustment (No. 303) during AE mode

Item

Description

 

 

 

Adjustments

 

Remarks

 

 

 

 

 

 

 

 

 

No. 301

Lamp intensity

 

 

 

 

 

 

The density is adjusted auto-

 

automatic

 

 

 

 

 

 

matically so that the copy

 

adjustment dur-

Lighter 9

 

 

 

 

density will be 5 when mak-

 

 

 

 

 

ing AE scans

 

 

 

 

ing copies of the Test Chart.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Copy

 

 

 

 

 

 

 

density 5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Density

 

 

 

 

 

 

 

 

 

 

Test Chart

Density of

 

 

 

 

 

 

 

Original

No. 302

Copy density

 

 

q If the setting is decreased

 

(development

w

q

in service mode,

 

bias) standard

AE copies will be

 

 

 

 

adjustment

Lighert 9

 

darker.

 

during AE

 

 

w If the setting is increased

 

mode

Copy

 

in service mode,

 

 

 

AE copies will be

 

 

density 5

 

 

 

 

 

lighter.

 

 

Density

 

default:

0

 

 

Test Chart

Density of

 

 

 

Original

settings: -26 to +26

 

 

 

 

No. 303

Copy density

 

 

q If the setting is increased

 

(development

 

q

in service mode,

 

bias) slope

 

copies of a newspaper

 

 

 

 

adjustment

Lighter 9

w

will be lighter.

 

during AE

 

w If the setting is decreased

 

mode

Copy

 

in service mode,

 

 

density 5

 

copies of a newspaper

 

 

 

 

 

 

 

 

will be darker.

 

 

Density

 

 

 

Test Chart Newspaper Density of default: 0

Original

settings: -26 to +26

Table 4-201

COPYRIGHT © 1997 CANON INC.

CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)

4-29

Page 105
Image 105
Canon FY8-13EX-000, NP6218 service manual AE Adjustment