Magnetic Pole Positioning - Minolta Di 620 Manual

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1155SBM1102A

11-2. Magnetic Pole Positioning

Each Magnet Roller of the Toner Replenishing, 1st, and 2nd Sleeve/Magnet Rollers

is made up of five magnets asymmetrically packed.

The Bias Plate at the front of the Developing Unit ensures that the angle of principal

magnetic pole N1 of the 1st Sleeve/Magnet Roller and that of principal magnetic

pole S1 of the 2nd Sleeve/Magnet Roller will not be changed with respect to the

center of the PC Drum.

The torsion springs at the front and rear ends of the Developing Unit press the Ds

Positioning Collars of the 1st and 2nd Sleeve/Magnet Rollers tightly against the PC

Drum, thus keeping constant the distance between each Sleeve/Magnet Roller and

the PC Drum.

Doctor Blade

Solid Line: Magnetic flux density

Dotted Line: Magnetic attraction

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