Pressure Control Mechanism - Riso RN SERIES Technical Manual

CHAPTER 6. PRESS SECTION

PRESSURE CONTROL MECHANISM

2. Pressure Control Mechanism
Pressing the < > or <
moves the Print pressure gear ass'y [D]. The movement of the Print pressure gear ass'y [D] varies the
tension of the second pressure spring [B].
This alters the pressure acting on Pressure lever B [C], and varies the print density by varying the
pressure of the pressure roller against the print drum. The pressure control motor is not actually
activated until the START key is pressed.
The printing pressure will vary depending on the printing speed and print density settings, the ink color,
the length of time the print drum remains standing, and the print drum's internal temperature.
The Print pressure control sensor [E] checks the standard printing pressure position.
A
E
A: Pressure control motor
B: Second pressure spring
C: Pressure lever B
D: Print pressure gear ass'y
E: Print pressure control sensor
> print density keys on the panel activates the Pressure control motor [A] and
B
D
RN (Version 1.0)
C
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