MBM 508A, Operation Manual

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5-4 : Cross Folding
• Cross-folding is to further perform double parallel fold or
letter fold on a sheet of paper folded already by single fold.
• This is good for folding A3 size stock which is already
folded by double parallel fold but still will not fit into a
standard size envelope.

Paper that can be used for cross folding varies according to
the conditions such as type of paper, paper size, paper
with lateral grain, paper with vertical grain, temperature
and humidity, printing conditions.
It may occur that lateral slanting is larger than normal
folding or the corner of the crease is folded inward, but this
is not caused by machine failure.
(1) Load single-folded paper on the feed table and secure it with the built-in paper guides from both sides.
(2) Slightly loosen the right and left screws of the paper feed auxiliary roller, and set them to where both ends of
the paper are held down.
(3) Set the right and left auxiliary paper guides where the bearing at the edge will accommodate the previously
single folded paper edge.
5-5 : How to fold art paper/coated paper
Caution!
As the holder of the paper feed auxiliary roller is made of resin, take care not to damage
the holder by tightening the screws too tightly.
Caution!
Press along the single folded line of the paper with fingers.
The amount of paper loaded should be less than normal (30 sheets or fewer).
Auxiliary paper guides should be placed away from built-in paper guides, and the roller should
hold down the single folded line by the first folding process.