Toshiba e-STUDIO556 Service Manual page 451

Remark:
Transfer bias ON timing adjustment (Not essential)
Depending on the environmental condition or the paper type, transfer ability for the paper leading
edge may decrease slightly and the poor image transfer may occur.
In this case, the image quality can be improved by adjusting the leading edge void width wider.
Also, it can be improved by changing the transfer bias ON timing using the setting code 08-2960.
* When using the setting code 08-2960 to improve the image quality, increase the value by one
and check the result. If the result is not sufficient, repeat the same procedure.
(The transfer ability for the paper leading edge shows a tendency as shown in the table
below.)
* The transfer ability for the paper leading edge and the paper separation ability from the photo-
conductive drum are inversely related as shown in the table below.
Therefore, if the value is increased too much, this may cause the slight decrease of the paper
separation ability from the photo-conductive drum. So, when adjusting the value, be sure to
check the paper feeding as well as the image quality.
[Setting code 08-2960: Transfer timing correction] for e-STUDIO556/656/756/856
Value
e-STUDIO556/656
0 Approx. 2.8 mm slower than the
standard ON timing
1 Approx. 1.4 mm slower than the
standard ON timing
2 Same as the standard ON
timing.
(Default value)
3 Approx. 1.4 mm faster than the
standard ON timing.
4 Approx. 5.7 mm faster than the
standard ON timing.
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Content
e-STUDIO756/856
Approx. 3.3 mm slower than the
standard ON timing
Approx. 1.6 mm slower than the
standard ON timing.
Same as the standard ON
timing.
(Default value)
Approx. 1.6 mm faster than the
standard ON timing.
Approx. 6.6 mm faster than the
standard ON timing.
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Paper
Transfer separation
ability for ability from the
paper leading photo-
edge conductive
drum
| Separation
| ability improves

|
| |
| |
| |
| |
| |
| |
| |
| |

|
Transfer ability |
improves |
e-STUDIO556/656/756/856/557/657/757/857
ADJUSTMENT
6