3MX
1-3-24
U087
Setting DP reading position modification operation
Description
The presence or absence of dust is determined by comparing the scan data of the original trailing edge and
that taken after the original is conveyed past the DP original scanning position. If dust is identified, the DP
original scanning position is adjusted for the following originals.
Purpose
When using DP, to solve the problem when black lines occurs due to the dust with respect to original reading
position.
Setting
1. Press the start key.
2. Select ON or OFF using the cursor up/down keys.
Initial setting: ON
3. Press the start key. The setting is set.
Setting the reference data for identifying dust
Available only when the mode is turned on.
1. Change the setting using the cursor left/right keys.
Example
The figure indicates the density in 256 levels of gray (0: white, 255: black). When the setting is 35, data
of the level of 35 or higher is regarded as dust and data of lower level is regarded as the background
(scan data taken when there is no original).
2. Press the start key. The value is set.
Completion
Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.
U203
Checking DP operation
Description
Simulates the original conveying operation separately in the DP.
Purpose
To check the DP operation.
Method
1. Press the start key.
2. Place an original in the DP if running this simulation with paper.
3. Select the item to be operated using the cursor up/down keys.
4. Press the start key. The operation starts.
5. To stop continuous operation, press the stop/clear key.
Completion
Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.
Maintenance
item No.
Description
Display
Description
ON
DP scanning position adjust mode on
OFF
DP scanning position adjust mode off
Description
Setting range
Initial setting
Minimum density to be regarded as dust
10 to 95
35
Display
Operation
ADP
With paper, single-sided original
RADP
With paper, double-sided original
ADP (NON P)
Without paper, single-sided original (continuous operation)
RADP (NON P)
Without paper, double-sided original (continuous operation)
Summary of Contents for DF-420
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