Copystar CS 181, Service Manual

Page: 68 / 355

2KJ/2KH
1-3-28
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.
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