RISO Inc. Technical Services & Support
US.RISO.COM
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CHAPTER 2: MACHINE SUMMARY
(1) When the print drum rotates, the scraper roller and
pickup roller also turn to feed paper. The stripper pad
allows only one sheet to pass through to the second
paper-feed area.
(2) The paper sent from the first paper-feed area contacts
the timing roller and guide roller, and stops temporarily.
This causes slight buckling of the paper.
(3) The timing roller and guide roller start rotating, feeding
paper to the pressure section. (This operation is referred
to as the “second paper-feed”. To prevent tension from
being placed on the end of the paper, the scraper roller
and pickup roller are free to spin.)
(4) When the paper is fed further in from the second paper-
feed area, the pressure roller rises to clamp the paper
between the drum and pressure roller to start the printing
operation.
(5) The printed paper is removed from the print drum by the
separator and separation fan. When the pressure roller
rises, the guide roller also moves up to prevent tension
from being placed on the tailing end of the paper.
(6) Then, the suction fan sucks in the air to keep the paper
firmly on the transfer belts while the paper is carried to
the paper-receiving tray.
(7) The next sheet of paper is sent to the first paper-feed
area, and the guide roller lowers.
3. Outline of Paper-feeding, Printing, and Paper-ejection Operations
Scraper roller
Pickup roller
Stripper pad
Guide roller
Timing roller
Pressure roller
Separation fan
Separator
Transfer belt
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