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Chapter 3 Advanced Operation
8-3. Double-feed detection
Double-feed detection refers to a function that reads the thickness of paper on test folding and detects
when more than one sheet of paper is fed into the machine at a time.
When the ultrasonic sensor is set, there is no need to perform test folding.
1
Touch the
key on the top screen —> Touch the
key —> Touch [D-Feed Detect].
The [Double Feed Detect] screen is displayed.
[1]
[2]
No.
Name
Function
Default
value
[1]
D-Feed Detect
Sets whether to enable double-feed detection.
When the DF ULTRASONIC SENSOR KIT is not registered, on/off can
be changed with the checkbox.
Enables the optical sensor.
Enables the ultrasonic sensor.
—
[2]
Thickness
When the optical sensor is set for double-feed detection, set the
thickness of the paper.
When the ultrasonic sensor is selected, the key is grayed out and
cannot be operated.
Thin
After setting, an icon is displayed on the touch panel display section.
When the optical sensor is enabled
• Set the paper [Thickness] to [Thin] when normal operation is performed.
If a double-feed is wrongly detected though the paper thickness is set to [Thin] and no double-feed
occurs in test folding or normal operation, set to [Thick].
• Perform test folding before you start processing paper folding.
The machine will not start if test folding is not performed even when the
key is pressed.
When test folding is performed, the icon changes from
to
.
• The data on paper thickness read by test folding will be cleared by changing the [Thickness] in the
double-feed detection setting. Test fold again when the setting is changed.
• Be sure to perform test folding every time printing materials are changed to different ones
even if the quality and thickness of paper used are the same. Double-feed may not be
detected correctly if processing is started without test folding.
• Double-feed detection may not work properly if printing on paper is uneven or paper is
misaligned.
• When [
D-Feed Detect
] is set to on, if double-feed occurs on test folding, perform test folding
again. Otherwise, double-feed will not be detected properly.
