Oki MC770 - Image Quality Adjustment (Scanning Function)

45584901TH Rev.1
4-22 /
Oki Data CONFIDENTIAL
4.4 Image Quality Adjustment (Scanning Function)
4.4.1 Gamma balance adjustment
The gamma balance at the Black Mode is adjusted by adjusting the density. The adjustment is
performedbyselectingitsdensityareafromthefollowing:lowdensity,mediumdensityandhigh
density.
<Adjustment Mode (05)>
Black
Gray
Scale
Item to be
adjusted
Remarks
Original mode
Text/
Photo
Text Photo
Custom
mode
7485-0 7486-0 7487-0 7480-0 7488-0 Lowdensity Thelargerthevalueis,the
density of the item to be
adjusted becomes darker.
Acceptable values: 0 to 255
(Default: 128)
7485-1 7486-1 7487-1 7480-1 7488-1 Medium
density
74850-2 7486-2 7487-2 7480-2 7488-2 High density
<Procedure>
(1) Whilepressing[0]and[5]simultaneously,turnthepowerON.
(2) Keyinthecodecorrespondingtothedesiredoriginalmodeandpressthe[START]button.
(3) Keyinthevaluecorrespondingtothedensityareatobeadjusted(0,1or2)andpressthe
[START] button.
 0:Lowdensity(L),1:Mediumdensity(M),2:Highdensity(H)
(4) Keyintheadjustmentvalue.(Tocorrectthevalueoncekeyedin,pressthe[CLEAR]button.)
(5) Pressthe[OK]or[INTERRUPT]buttontostorethevalueinmemory.
→
Theequipmentgoesbacktothereadystate.
(6) Forresettingthevalue,repeatstep(2)to(5).
(7) Lettheequipmentrestartandperformthescanningjob.
(8) Ifthedesiredimagehasnotbeenattained,repeatstep(1)to(7).