HP Color 9850mfp Service Manual - Page 100

DEVELOPING UNIT 4. DEVELOPING UNIT 4.1 Composition hp Color 9850mfp II UNIT EXPLANATION [8] [9] [10] [11] [4] [5] [6] [7] [12][13][14][15] [16] M20 M21 M22 M23 HV1 DRIVE CLOCK CW LOCK H/L DRIVE CLOCK CW LOCK H/L DRIVE CLOCK CW LOCK H/L DRIVE CLOCK CW LOCK H/L [17] [1] [2] [3] PRCB Symbol Name [1] Conveyance screw [2] Collection screw [3] Agitator screw [4] Toner density sensor Y (TDS Y) [5] Toner density sensor M (TDS M) [6] Toner density sensor C (TDS C) [7] Toner density sensor K (TDS K) [8] Developing unit Y Function or method Conveyance of developer from the agitator screw to the developing sleeve Screw method Conveyance of developer from the scraper magnet roller to the collection sector Screw method Agitation of developer and the conveyance of developer to the conveyance screw Screw method Detection of toner density in the developing unit Y L detection method Detection of toner density in the developing unit M L detection method Detection of toner density in the developing unit C L detection method Detection of toner density in the developing unit K L detection method Adhesion of yellow toner to the image transferred on the drum Y 2-26