IMAGE CREATION PROCESS hp Color 9850mfp 5 .6 2nd transfer process (Step 5) I OUTLINE The operation to transfer the toner image of the four colors on the transfer belt to paper is referred to as the 2nd transfer. While in the 2nd transfer, the 2nd transfer roller L provided at the lower section of the transfer belt conveys paper while pressing it against the transfer belt. At this time, the 2nd transfer roller U provided at the rear of the transfer belt is applied with a high DC bias voltage (negative). Toner on the transfer belt is shifted toward the paper by the electric field formed between the 2nd transfer roller U and the 2nd transfer roller L.
[1] [4] [2] [3] [1] Transfer belt [3] 2nd transfer roller L [2] Paper [4] 2nd transfer roller U 5 .7 Separation process (Step 6) While in the 2nd transfer, paper in the process of transfer is negatively charged by the 2nd transfer roller U, resulting in an absorption phenomenon where paper is attracted to the transfer belt. This operation to peel paper that is thus absorbed off the transfer belt is referred to as separation. Separation is made by applying high AC and DC bias voltages to the separation discharging unit. As a result the charges of the paper and the transfer belt are neutralized.
[1] [2] [3] [4] [1] Transfer belt [3] 2nd transfer roller L [2] Paper [4] Separation discharging unit 1- 44