General Procedures and Information
6-20 5/08 Phaser 3435
Charging Portion
• Type: Conductive Roller Contact-Charge
• Rotary Velocity: 179.7 mm/sec
• Surface potential: -760 +/-70V (based on OPC, N/N cond.)
• Residual potential: -130 V or less (initial)
• Control Type: Bias PWM Control
• Roller material: Conductive elastic roller (Conductive NBR + SBR)
-Structure: Mono layer (Surface UV process)
-Resistance: 0.75E+06 ~ 5.0E+06 (N/N cond.)
-Hardness: 50 degrees +/-3 degrees
-Length: 230 mm
- OD: 12.0 +/-0.05 mm
-Shaft Material: SUM-24L + Non-electrolysis Ni Coating
- Shaft OD: 6 +0 / -0.05 mm
-Driver: Gear Driver
-Pressure: L:300 gf / R:350 gf
-Roller surface roughness: Ra 1.8 um or less (shaft direction)
-Roller life: 10,000 sheets or more
• Roller Voltage: -1.25 ~ -1.70 KV
Engine H/W Specifications
Main Board
The Engine Board and the Controller Board are in one united board, and it is consisted of CPU
part and print part in functional aspect. The CPU is functioned as the bus control, I/O handling,
drivers, and PC interface. The main board sends the Current Image of Video data to the LSU and
manages the conduct of Electrophotography for printing. It is consisted of the circuits of the motor
(paper feed, pass) driving, clutch driving, pre-transfer lamp driving, current driving,
and fan driving. The signals from the paper feed jam sensor and paper empty sensor are directly
inputted to the main board.
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