Toshiba e-STUDIO6520c - Image Quality Adjustment (Printing Function)

3
© 2008-2011 TOSHIBA TEC CORPORATION All rights reserved e-STUDIO5520C/6520C/6530C
ADJUSTMENT
3 - 47
3.3 Image Quality Adjustment (Printing Function)
3.3.1 Automatic gamma adjustment
When the reproduction of gradation is not appropriate, the gradation reproducibility of all colors Y, M, C
and K can be corrected by performing this automatic gamma adjustment. In case the gradation
reproduction of the image checked is not satisfactory, make this adjustment as described below at parts
replacement.
1. When unpacking or any of the following parts has been replaced, be sure to make this adjustment:
• Photoconductive drum • Developer material • Laser optical unit
• Transfer belt • 1st transfer roller • Drum cleaning blade
• Needle electrode • Main charger grid • Image position aligning sensor
• Image quality sensor • SRAM board (LGC board, SYS board)
2. When any of the following parts are replaced or adjusted, make a print and check the image to
determine if adjustment is necessary:
• 2nd transfer roller
Note:
Be sure that this adjustment be made after performing the image adjustment in  P.3-4 "3.1.3
Performing Image Quality Control (IQC)" and  P.3-7 "3.1.5 Image Dimensional Adjustment
(General description)".
<Adjustment Mode (05)>
* If the code 1008 (600dpi) or 1009 (1200dpi) is performed, the adjustment will be applied to all paper
types.
Code
(600dpi)
Code
(1200dpi)
Paper type Remarks
1004-0 1005-0 Plain paper 1 When the reproduction of gradation is not
appropriate, the gradation reproducibility
of all colors Y, M, C and K can be
corrected by performing this automatic
gamma adjustment.
1004-1 1005-1 Plain paper 2
1004-2 1005-2 Recycled paper
1004-3 1005-3 Thick paper 1
1004-4 1005-4 Thick paper 2
1004-5 1005-5 Thick paper 3
1004-6 1005-6 Thick paper 4
1004-7 1005-7 Special paper 1
1004-8 1005-8 Special paper 2
1008 1009 All type paper
*