Savin SDC103A Service Manual download pdf (Page 151)

100

101

Timing

Toner supply for a particular color is performed only when the development

section for that color is at the development position.

The Bk toner cartridge [A] is installed at the center of the development unit,

and is separated from the Bk hopper section [B] and the Bk toner supply

section [C]. The color cartridges (CMY) [D, E, F] are installed around the Bk

toner cartridge and each contain a hopper mechanism.

For C, M, and Y toner the process is as follows:

1. The toner supply motor [G] is switched on/off by a fuzzy control process

based on toner concentration on a standard ID sensor pattern. The toner

supply motor is located at the front side of the development unit and

drives the toner supply roller [H] via gears.

While the development unit rotates, the toner supply solenoid [I] turns on

to prevent the drive from the toner supply motor from turning the toner

supply roller.

2. When the toner supply roller [H] turns, toner moves from the hopper

section [K] to the toner supply section [J]. Then toner is carried to the

rear by the inner auger [L] of the dual mixing roller.

[H]

[J]

[L]

[K]

[B]

[C]

[D]

[E]

[F]

[A]

[I]

[H]

OFF

[G]

DEVELOPMENT UNIT

A166/A187/A189 2-82 SM

CÓPIA NÃO CONTROLADA

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Savin SDC103A Service Manual Page 151

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