hp Color 9850mfp DRUM UNIT 3.
DRUM UNIT 3.1 Composition [26] M14 U V W [25] [1] PS60 [24] [23] PS61 DRDB/Y [22] [2] 1 2 3 II UNIT EXPLANATION M15 [3] PS62 [4] PS63 DRDB/M [21] [5] [6][7][8] [9] [27][28][29][30] [10][11] [12] [20] [13][14][15][16] [19] PRCB HV1 [18] [17] 2-21 1 2 3 DRDB/C 1 2 3 DRDB/K M17 PS67 Symbol Name Function or method [1] Drum potential sensor board Y (DRPSB Y) Controls the drum potential sensor Y (DRPS Y) [2] Drum potential sensor board M (DRPSB M) Controls the drum potential sensor M (DRPS M) [3] Drum potential sensor board C (DRPSB C) Controls the drum potential sensor C (DRPS C) [4] Drum potential sensor board K (DRPSB K) Controls the drum potential sensor K (DRPS K) [5] Developing unit Y Deposits yellow toner to the transfer image on the drum Y See "4.
Developing unit." [6] Developing unit M Deposits magenta toner to the transfer image on the drum M See "4. Developing unit." [7] Developing unit C Deposits cyan toner to the transfer image on the drum C See "4. Developing unit." [8] Developing unit K Deposits black toner to the transfer image on the drum K See "4. Developing unit." [9] Charging Y Forms a charging potential on the surface of the drum Y DC corona discharge (Scotron) Wire discharge: gold-plated tungsten wire (φ 30µm) Constant-current method DC output range: -450 to -1100µA Grid bias: charging grid plate Constant voltage method DC output range: -200 to -850V