Kyocera Mita KM-1530 Service Manual page 118

Maintenance
item No.
U088 Setting the input filter (moiré reduction mode)
Description
Turns moiré reduction mode on and off by switching the input filter on and off.
Purpose
Used to prevent regular density unevenness (moiré) on halftone image areas of the copy image in text mode
and text and photo mode. Such moiré is more likely to appear when an enlargement or reduction copy is made
in text mode from an original containing large halftone image areas.
Method
Press the start key.
Setting
1. Select "on" or "oFF" using the zoom +/– keys. The selected item is displayed in reverse.
Display
on
oFF
Initial setting: oFF
If moiré on the copy image is significant, change the setting to "on". Note that when the moiré reduction
mode is turned on, the resolution may be slightly reduced.
2. Press the start key. The value is set. The indication for selecting a maintenance item No. appears.
Completion
To exit this maintenance item without changing the current setting, press the stop/clear key. The indication for
selecting a maintenance item No. appears.
U091 Checking shading
Description
Performs scanning under the same conditions as before and after shading is performed, displaying the original
scanning values at nine points of the contact glass.
Purpose
To check the change in original scanning values before and after shading. The results may be used to decide
the causes for fixing unevenness (uneven density) of the gray area of an image: either due to optical (shading
or CCD) or other problems.
Also to check the causes for a white or black line appearing longitudinally.
Method
1. Press the start key. A selection item appears.
2. Select the item to be operated using the zoom +/– keys.
Display
on
oFF
Description
Description
Moiré reduction mode
Normal copy mode
Output list
Performs scanning before shading and displays the result.
Performs scanning after shading and displays the result.
2AV/X
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