Xerographic developing system rolls having magnets of...

Details Xerographic developing system rolls having magnets of... Xerographic developing system rolls having magnets of...

G - Physics

03

G

32/12.09

G03G 15/09 (2006.01)

Patent

CA 1071395

XEROGRAPHIC DEVELOPING SYSTEM ROLLS HAVING MAGNETS OF DIFFERENT WIDTHS ABSTRACT OF THE DISCLOSURE A xerographic developing system has rotating rolls in which stationary magnets of different axial widths are located. Magnetic developer is attracted to these rolls and the developer band width is controlled by the width of the magnets. The rolls may be transport rolls or developer rolls. When this concept is employed for transport rolls, a much larger sump capacity may be utilized since the developer band width can be controlled by varying the sizes of the magnets to keep the developer at the outer edges of the developer sump moving inwards to the developer zone. When this concept is employed for developer rolls, compensation is provided . or spreading of the developer band and thereby loss of developer when the developer band is transported from one development roll in a magnetic brush system to another development roll either directly or by an intermediary transport roller.

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