Savin SDC103A Service Manual download pdf (Page 77)

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101

1.3.5 Vsg Calibration

The ID sensor checks the bare drum’s reflectivity and calibrates the output of

the ID sensor to 4

0.1 V. This compensates for both the drum’s and the ID

sensor condition, such as dirt on the surface of the drum or ID sensor.

1.3.6 Writing the Gradation Pattern

The machine makes a 12-grade pattern on the drum for each color. Each

grade is made by changing the LD power. At this stage, the patterns are not

developed; they remain as latent images.

1.3.7 Gradation Pattern Potential Detection

The drum potential sensor detects the potential on each grade of the

12-grade sensor pattern latent image, and the output is stored in memory.

1st level

of LD power

2nd level

of LD power

3rd level

of LD power

11th level

of LD power

12th level

of LD power

PROCESS CONTROL

A166/A187/A189 2-8 SM

CÓPIA NÃO CONTROLADA

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Savin SDC103A Service Manual Page 77

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