36
Ricoh Co. Ltd.
http://www.ricoh.com/
B245-62 / PD-C4
Slide 36
Auto Image Density (ADS)
In the SBU
ADS prevents the background of an original from appearing on copies. As
the scanner scans down the page, the IPU on the BICU detects the peak
white level for each scan line. The IPU determines the reference value for
the A/D conversion for a particular scan line using the peak white level for
that scan line. Then, the IPU sends the reference value data to the
reference controller on the SBU.
When an original with a gray background is scanned, the density of the
gray area is the peak white level density. Therefore, the original
background will not appear on copies. Because peak level data is taken for
each scan line, ADS corrects for any changes in background density down
the page.
As with previous digital copiers, the user can select manual image density
when selecting ADS, and the machine will use both settings when
processing the original.
By Original Type
ADS mode is only enabled when the user has selected Text mode 1 or 2
(Normal or Sharp), Photo mode 2 (Text/Priority), or Special mode 1 or 2
(Unneeded background or Colored Text).
This can be done using Adjust Original Mode (3) in User Tools (Copier
Features).
No additional notes.
