2-18 Phaser 3300MFP Service Manual
Theory of Operation
Print Cartridge
In the print cartridge, the OPC unit and the developer unit are housed in a
single case. The OPC unit consists of the OPC drum and charging roller, and
the developer unit includes toner, toner chamber, supply roller, developing
roller, and the blade.
Summary
■ Developing Method: Non magnetic 1 element contacting method
■ Toner: Non magnetic 1 element shatter type toner
■ The life span of toner: 4k/8k sheets (ISO 19752 5% Pattern/A4 standard)
■ Toner Residual Sensor: Dot count with CRUM (CRU Monitor)
■ OPC Cleaning: Collect the toner by using cleaning blade + FILM OPC
■ Handling of wasted toner: Collect the wasted toner in the cleaning frame
by using cleaning blade
■ OPC Drum Protecting Shutter: None
■ Classifying device for print cartridge: ID is classified by interruption of the
frame channel.
Developing Roller
■ Rotary Speed: 203.06 mm/sec
■ Roller Bias: -220 V ~ -400 ± 20 V
■ Control Type: Bias PWM Control type
■ Structure: Mono layer
■ Valid Length: 228 mm
■ OD: ϕ 14.07 mm ± 0.05
■ Shaft material: SUS 303
■ Life: 8.000 sheets or more
Supply Roller
■ Roller Bias: -370 V ~ -550 V
■ Control Type: Bias
■ Valid Length: 220 mm
■ OD: ϕ 11.2 ± 0.1 mm
■ Shaft OD: ϕ 6 mm + 0 / -0.05
■ Driver: Gear Driver (in a direction opposed to D/R)
■ Sponge Density: 0.45, ± 0.1 g/m
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Life: 8.000 sheets or more
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