Savin SDC103A Service Manual download pdf (Page 166)

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Between colors, the revolver must rotate. When one of the development

rollers is near the drum, especially while the revolver is locked into place,

there is a chance of toner transferring over to the drum [A] (see

"Development"). Therefore, revolver rotation must be timed so that areas

of the drum facing the revolver when a development roller is near the

drum always arrive at a non-image area on the belt [B].

1. After the start key has been pressed, the drum motor starts, and the

drum and transfer belt turn continuously.

2. The revolver motor then moves the first color development section into

position. For Red, the first color is Magenta, so the revolver has to turn

180 degrees. For Blue, the first color is Cyan, so the revolver has to turn

90 degrees. (See the "Development Unit" section for the positions of the

color development sections in the revolver.)

3. Next when the transfer belt reaches the home position, the laser starts to

write the image data for the first color to the drum.

4. When the toner on the drum rotates past the transfer belt, the transfer

bias pulls the toner image off the drum and onto the belt.

5. Then, the revolver must move the next color development section into

position. For Red, the next color is Yellow, and for Blue, the next color is

Magenta. For either of these, the revolver has to turn 90 degrees.

[A]

[B]

Detailed

Section

Descriptions

TRANSFER BELT UNIT

SM 2-97 A166/A187/A189

CÓPIA NÃO CONTROLADA

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Savin SDC103A Service Manual Page 166

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