2.
2.7.2 To Adjust the Copy Image Quality in Full Color Mode
*You can start with any of the procedures. But it is recommended to perform the procedures in order, as listed below. You can use one procedure in conjunction with another. But if this changes the image quality more than required or loses effectiveness of the adjustment, restore the settings made in the previously used procedure to the original. Then perform the next procedure.
*Procedures (1) and (3) are used by the service technician, and by the user.
*Procedure (2) is used by the service technician only.
(1) Press the [IMAGE] button on the Control Panel. Press the [BACKGROUND ADJUSTMENT] button. Press the [LIGHT] button to decrease the background density.
After decreasing the background density, copy and check the copy image quality.
With the background density set to the minimum, if the images seen through the back of the page are still copied, the service technician must use the next procedure.
(2) Enter adjustment mode [05]. Change the values for codes [1688 to 1692] and [1698 to 1702] to adjust the background density.
| Adjustment | Original mode | [05] code | Value recommended | Acceptable | Default |
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| Automatic offsetting | Text/Photo |
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| Text |
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| adjustment for | Printed image |
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| background processing | Photo |
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| Map | Set a value smaller than 128. | 0 to 255 | 128 | |
| Manual offsetting | Text/Photo | ||||
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| Text |
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| adjustment for | Printed image |
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| background processing | Photo |
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| Map |
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*The value for the automatic offsetting adjustment for background processing will be applied, only if automatic copy density mode is selected. On the other hand, the value for the manual offsetting adjustment for background processing will be applied, only if manual copy density mode is selected.
*Set the value in increments of approximately 10, while checking the copy image until the optimum value is obtained.
*The outcome of the adjustment will affect only on copying in Full color mode.
<Note> "Making the highlighted area more visible (or increasing the background density)" and "eliminating the background color (or decreasing the background density)" are mutually contradictory. If the density of the background color is decreased, the highlighted area may become less visible.
After adjusting the background density, copy and check the copy image quality.
If further image quality adjustments are still necessary, use the next procedure.
2.7
