Adjustment; Separator Mounting Position - Riso RN SERIES Technical Manual

CHAPTER 7. PAPER EJECTION SYSTEM

SEPARATOR MOUNTING POSITION

Adjustment

1. Separator Mounting Position
(1) Using test chart No.15, create a master and make prints. Check that the paper does not jam on the
drum and that there is no black line through the center of the paper caused by the Separator touching
the print drum. The Separator position is OK if there is no paper jamming on the print drum with 5
mm white margin on the top of the prints.
(2) If the paper sticks to the print drum or black line appears on the printed sheet, stop the print drum at
position-A, switch off the power, remove the rear cover, and then remove the following component.
• Separation fan unit
(3) Insert a screwdriver through the insertion point [B] at the bottom left of Pressure lever A [A], and
loosen the retaining screw [D] on the Separator positioning plate[C].
(4) Insert a penlight inside the machine, on top of the suction unit, and inspect the tip of the Separator [E]
through the square opening in the machine side frame located just above Pressure lever A [A].
(5) Move the Separator positioning plate [C] and tighten the separator positioning plate retaining screw
[D] so that the gap between the Separator [E] tip and the Print drum surface [F] is 1.0 mm to 1.5 mm.
Symptoms
• If the tip of the Separator [E] touches the Print drum surface [F], it will scratch the surface of the
master, causing a black line on the printed sheets.
• Conversely, if the gap is too wide, the paper will not be properly released from the print drum, and
sticks onto the print drum.
A
A: Pressure lever A
B: Screwdriver insertion point
C: Separator positioning plate
D: Separator positioning plate retaining screw
E: Separator
F: Print drum surface
G: Separator positioning plate base
B
7 – 16
RN (Version 1.0)
C D
F
E
D
C
G
1.0–1.5 mm