Image Quality Setting By Up Mode - Gestetner A294 Service Manual

4.8.3 IMAGE QUALITY SETTING BY UP MODE

'Original Mode Level' in the 'General Features' UP menu is related to the 'MTF
Filter Settings' SP mode.
Text
Text/Photo
Photo
Pale
Generation
If a setting from the above three columns [A] is selected, the MTF level (coefficient)
and MTF strength (SP4-903-20 to 58) are fixed. Any changes to the SP mode
settings are not reflected on the copy. To use the settings specified by SP mode,
the user must select "Service Mode" [B].
The detailed relationship between the different original modes, the UP modes, and
the SP modes are as follows.
Text Mode
Different gamma correction settings are used for "Sharp", "Normal" or "Soft" mode.
So, when adjusting the "Service Mode" setting, first select a gamma correction
setting for the basic image setting using SP4-903-84.
1. The following tables should be used when 1 (Normal) or 2 (Sharp) is selected
in SP4-903-84.
Magnification Ratio: 25 ~ 49%
MTF Filter Strength
UP mode
Pre-filter Type – Text
SP4-903-010
Filter Level – Text
Main Scan Direction
SP4-903-020
Filter Strength – Text
Main Scan Direction
SP4-903-022
SM
CÓPIA NÃO CONTROLADA
Soft Normal
Photo Priority Normal
Screened Photo Normal
Soft Normal
Soft Normal
[A]
Strong
Sharp
1 1
13 13
3 2
4-85
CÓPIA NÃO CONTROLADA
USER PROGRAM MODE
Sharp Service Mode
Text Priority Service Mode
Glossy Photo Service Mode
Sharp Service Mode
Sharp Service Mode
A294M511.WMF
Normal
1 1
13 13
1 0
[B]
Weak
1
7
0
A294/A295