Canon Color ImageRunner C3380 Reference Manual page 253

3
Refer to the sample print and set the contrast value indicated
for an image where the hidden text is difficult to see using [▼]
or [▲].
● If there is no image where the text is difficult to see:
❑
Press [Standard Value Settings] ➞ [Sample Print] ➞ [Yes].
❑
Refer to the standard value sample print and set the standard value indicated
for the image which has the most even contrast for the inner and outer squares.
❑
Press [OK] ➞ return to step 2.
NOTE
When changing the adjustment area on the sample print for the relative contrast,
specify settings for [Standard Value Settings].
● If you want to adjust the density of the text:
❑
Press [Latent String Density] ➞ adjust the density using [-] or [+].
❑
Press [OK] ➞ return to step 2.
NOTE
When adjusting the density of the characters (latent image), specify settings for
[Latent String Density].
4
Press [OK].
The more even the contrast between the hidden text and the background is, the
harder it will be to see the hidden text on the original, but the less the hidden text
will appear when it is copied. It is recommended you make a copy of the original
after adjusting the contrast to confirm that the secure watermark becomes visible
as desired.
NOTE
The contents of the settings changed in [Character/Background Contrast
Adjustment] are retained until the next time the settings are changed.
Adjusting the Machine
4
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