Savin SDC103A Service Manual download pdf (Page 86)

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(4) Fuzzy Logic Algorithm

The fuzzy logic algorithm has two input factors which are related to the

amount of toner on the drum. These are:

•

The difference between the average of the previous 10 M/As and the

target M/A

•

The tendency of the previous 10 M/As (Toner Amount)

(5) Image Area Ratio

This is a measure of how much toner will be needed for each color on a

page. From the image data from the IPU, the machine determines the total

amount of the color on the page. It takes into account the grayscale values

for each pixel for that color.

1.4.3 Fixed Supply Mode

In fixed supply mode, the machine adds a fixed amount of toner to the

developer every copy. Readings from the ID sensor are ignored.

The toner supply ratios for each color in fixed supply mode are defined by

SP 2-208-5 to 8.

1.4.4 Toner Supply in Abnormal Sensor Conditions

The machine detects an abnormal sensor condition if the detected Vsg value

is out of the 4.0

0.1 V range three consecutive times during the process

control self check. After that SC 385 is displayed and logged. Switching the

main switch off/on recovers the machine and the toner supply method falls

back to fixed supply mode.

If the abnormal condition is recovered during the next process control self

check, the machine selects the fuzzy control mode again automatically.

Detailed

Section

Descriptions

PROCESS CONTROL

SM 2-17 A166/A187/A189

CÓPIA NÃO CONTROLADA

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Savin SDC103A Service Manual Page 86

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