Ricoh FW780 Service Manual - Page 336
Development, Toner Density Control
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DEVELOPMENT 2.4 DEVELOPMENT 2.4.4 TONER DENSITY CONTROL The toner supply amount ratio is determined by the following conditions. TS 0 ~ 50 sheets Level (~ 30 m) 51 ~ 100 sheets (30 ~ 60 m) 0 VTS < 4.00 VTS < 3.50 1 4.00 ≤ VTS < 3.50 ≤ VTS < 4.10 3.80 N 2 4.10 ≤ VTS < 3.80 ≤ VTS < 4.20 4.10 3 4.20 ≤ VTS < 4.10 ≤ VTS < 4.30 4.20 4 4.30 ≤ VTS < 4.20 ≤ VTS < 4.40 4.35 5 4.40 ≤ VTS 4.35 ≤ VTS 0 VTS < 4.35 VTS < 4.30 1 4.35 ≤ VTS < 4.30 ≤ VTS < 4.38 4.33 L 2 3 4.38 ≤ VTS < 4.40 4.40 ≤ VTS < 4.42 4.33 ≤ VTS < 4.36 4.36 ≤ VTS < 4.40 4 4.42 ≤ VTS < 4.40 ≤ VTS < 4.45 4.43 5 4.45 ≤ VTS 4.43 ≤ VTS 0 VTS < 4.00 VTS < 3.00 1 4.00 ≤ VTS < 3.00 ≤ VTS < 4.10 3.50 H 2 4.10 ≤ VTS < 3.50 ≤ VTS < 4.20 4.00 3 4.20 ≤ VTS < 4.00 ≤ VTS < 4.30 4.20 4 4.30 ≤ VTS < 4.20 ≤ VTS < 4.40 4.30 5 4.40 ≤ VTS 4.30 ≤ VTS 101 ~ 150 sheets (60 ~ 90 m) VTS < 3.00 3.00 ≤ VTS < 3.50 3.50 ≤ VTS < 4.00 4.00 ≤ VTS < 4.20 4.20 ≤ VTS < 4.30 4.30 ≤ VTS VTS < 4.25 4.25 ≤ VTS < 4.30 4.30 ≤ VTS < 4.33 4.33 ≤ VTS < 4.36 4.36 ≤ VTS < 4.40 4.40 ≤ VTS VTS < 2.50 2.50 ≤ VTS < 3.00 3.00 ≤ VTS < 3.50 3.50 ≤ VTS < 4.00 4.00 ≤ VTS < 4.25 4.25 ≤ VTS 151 ~ 200 sheets (90 ~ 120 m) 201 ~ 250 sheets (120 ~ 150 m) 251 sheets ~ (150 m ~) VTS < 2.50 VTS < 2.25 VTS < 2.00 2.50 ≤ VTS < 2.25 ≤ VTS < 2.00 ≤ VTS < 3.00 2.70 2.40 3.00 ≤ VTS < 3.50 3.50 ≤ VTS < 4.00 4.00 ≤ VTS < 4.25 4.25 ≤ VTS 2.70 ≤ VTS < 3.15 3.15 ≤ VTS < 3.60 3.60 ≤ VTS < 3.90 3.90 ≤ VTS 2.40 ≤ VTS < 2.80 2.80 ≤ VTS < 3.20 3.20 ≤ VTS < 3.60 3.60 ≤ VTS VTS < 3.75 3.75 ≤ VTS < 4.00 4.00 ≤ VTS < 4.10 4.10 ≤ VTS < 4.20 4.20 ≤ VTS < 4.38 4.38 ≤ VTS VTS < 3.25 3.25 ≤ VTS < 3.50 3.50 ≤ VTS < 3.80 3.80 ≤ VTS < 4.00 4.00 ≤ VTS < 4.35 4.35 ≤ VTS VTS < 2.75 2.75 ≤ VTS < 3.20 3.20 ≤ VTS < 3.60 3.60 ≤ VTS < 3.90 3.90 ≤ VTS < 4.30 4.30 ≤ VTS VTS < 2.25 2.25 ≤ VTS < 2.70 2.70 ≤ VTS < 3.15 3.15 ≤ VTS < 3.60 3.60 ≤ VTS < 3.90 3.90 ≤ VTS VTS < 2.00 2.00 ≤ VTS < 2.40 2.40 ≤ VTS < 2.80 2.80 ≤ VTS < 3.20 3.20 ≤ VTS < 3.60 3.60 ≤ VTS VTS < 1.80 1.80 ≤ VTS < 2.00 2.00 ≤ VTS < 2.50 2.50 ≤ VTS < 3.00 3.00 ≤ VTS < 3.50 3.50 ≤ VTS TS Level (Toner Supply Ratio) 0: No supply 1: 7.5% 2: 7.5% 3: 7.5% 4: 15% 5: 100% Toner density control table has been changed for B047/B048 copiers. B047/B048 2-4 SM