Chapter 77-17.1 Construction7.1.1 Specifications of the Image Formation System 0006-6168iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /T-7-1Drum Unit SpecificationsT-7-2Pre-Exposure Unit SpecificationsT-7-3Developing Unit SpecificationsT-7-4Toner Cartridge SpecificationsT-7-5Others7.1.2 Major Components of the Image Formation System 0006-5981iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 / / / iR3530 /Photosensitive drumDrum type OPCDrum diameter 30 mmCleaning mechanism by cleaning bladeProcess speed 230 mm/sec (iR3570/4570/3530)137 mm/sec (iR2270/2870/2230/2830)Primary chargingCharging method by roller (AC + DC)Charging roller diameter 16 mmCleaning mechanism by brush roller (reciprocating mechanism)Transfer chargingCharging method by roller (DC)Charging roller diameter 16 mmLED 12 pc.Timing of light emission in response to drum rotationDeveloping cylinder diameter 20 mmDevelopment method by dry, single-component toner projection method (application of AC + DC)Toner single-component insulating magnetic tonerToner level detection by toner level sensor (inside sub hopper and developing assembly)Toner level detection noneToner variable resistor 1220 g (iR3570/4570/3530)1060 g (iR2270/2870/2230/2830)separation method by static eliminator + curvatureWaste toner collection to waste toner case
