Process Control; Overview; Process Control Flow - Ricoh PE-P1 Service Manual

Process Control

Overview

This machine has these two forms of process control:
• Potential control
• Toner supply control
Process control uses these components:
• Three TM (Toner Mark) sensors (left [A], center [B], and right [C]). Only the center TM sensor (direct-
reflection and diffusion type) is used for process control. The left and right TM sensors (direct-reflection
type) are used for line positioning and other adjustments.
• Temperature/humidity sensor at the rear right of the machine.

Process Control Flow

1. TM sensor correction (Vsg adjustment)
The center TM sensor checks the bare transfer belt's reflectivity and the machine calibrates the TM
sensors.
2. Development bias control
Process Control
6
169