Ppm Control - Konica Minolta magicolor 2490MF Service Manual

Theory of operation ver. 1.0 July. 2006
17.3.4

PPM control

• PPM control is provided to prevent the temperature on edges of the heating roller from
increasing during a multi-print cycle using plain paper of a small size.
• The distance between sheets of paper is widened according to the number of printed
pages set to be produced and the paper length. This evens out the temperature of the
heating roller and thus stabilizes fusing performance of the printed toner image.
• To perform the PPM control, the number of printed pages per minute is established for
each paper size.
A. Monochrome ordinary environment
139 mm or less
140 - 148 mm
Width
149 - 182 mm
183 - 210 mm
B. Monochrome low temperature environment
• The low temperature environment refers to the condition, in which the temperature/
humidity sensor detects a temperature of less than 20 °C.
139 mm or less
140 - 148 mm
Width
149 - 182 mm
183 - 210 mm
C. Color environment
139 mm or less
140 - 148 mm
Width
149 - 182 mm
183 - 210 mm
Less than 210 mm 210 - 215 mm
14
18
19
20
210 mm 211 - 216 mm
12
15
16
17
210 mm 211 - 216 mm
3
5
5
5
Length
216 - 256 mm
14 14
18 14
18 14
20 20
Length
217 - 257 mm
12 12
15 12
15 12
17 17
Length
217 - 257 mm
3 3
5 3
5 3
5 5
17. Fusing section
257 - 296 mm
14
14
14
14
258 - 297 mm
12
12
12
12
258 - 297 mm
3
3
3
3
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