Chapter 77-2T-7-7T-7-8T-7-97.1.2 Overview 0013-8461Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 / Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR C3080i / iRC2550The image formation system is the core of the machine, ultimately forming toner images on paper.The machine's imaging system consists of a photosensitive drum, developing cylinder, 4 drum units containing carrier, 4 toner containers, ITB unit, fixing assembly,and secondary transfer outside roller, all controlled by the DC controller.When the print command arrives from the main controller, the DC controller controls the laser/scanner unit and HVT1/2 (high-voltage PCB) to form images onpaper according to the instructionsarriving in the form of a video signal.Toner low warning Toner low warning at approx. 10% remaining (variable in service mode)Detecting the Level of Toner piezoelectric sensor, Toner feed level sensorIntermediate transfer unit specITB (Intermediate Transfer Belt) SeamlessBelt drive Gear drive from drum ITB motor (M1)Feed speed Refer to process speedCleaning mechanism - Cleaning blade- Half-tone printing cleaningSecondary transferCharging system Roller contact chargingCharging roller diameter 24.7 mmCleaning mechanism Reverse biasImage stabilisation controlATVC control Transfer assuranceATR control Toner density (refill quantity) correctionDrum film pressure detection Charging voltage controlAutomatic gradationcorrection:Full controlGradation correctionAutomatic gradationcorrection:Quick controlGradation correctionARCDAT control Decides optimum gradation tableToner vessel spec
