IBM Oce TDS400 - Manual (Page 59)

Using the Océ TDS400 to Copy 59
When you copy very light or dark originals, or originals with unequal
background density, the result can not meet your requirements (e.g. too much
background).
Default the automatic background compensation is active and the exposure
level is 0.
The automatic background compensation will provide a good quality copy
from a large variety of originals. The automatic background compensation
setting, which is switched on (by default), ensures the production of
background-free copies of most line drawings.
▼ Adjust the exposure setting
1 Press the ‘Exposure’ key.
2 Select the needed exposure value with the or key.
▼ Set the automatic background compensation
1 Press the Extra key.
2 Select ‘Original’ with the or key.
3 Press the key to enter the ‘Original’ menu.
4 Select ‘Background comp.’ with the or key.
5 Press the key to enter the ‘Background comp. menu.
6 Select ‘on’ or ‘off’ with the or key.
7 Press the confirm key.
The Océ TDS400 allows you to adjust the exposure setting according to the
type of image on the original. There are three original types available:
■ Lines/text
■ Photo
■ Blueprint
By default ‘Lines/text’ is selected with the background compensation enabled.
This is the best setting for originals with characters and line art.
■ Select ‘Photo’ when the original consists of a combination of characters, line
art and picture images.
Note: If you select ‘Photo’, the ‘Background compensation’ will be
switched off automatically.
■ Select ‘Blue print’ when you want to copy an original with an image in
negative (image in white on dark background). The copy will be positive
(image in black on white background).