Grooved magnetic brush roll

Details Grooved magnetic brush roll Grooved magnetic brush roll

G - Physics

03

G

32/12.08

G03G 15/09 (2006.01)

Patent

CA 1094796

GROOVED MAGNETIC BRUSH ROLL Abstract of the Disclosure For use in an electrophotographic copy machine utilizing magnetic brush roll development, an improved hollow magnetic roll made of non-magnetic material con- taining axially located grooves along the exterior periph- ery. The grooves are spaced in a range from 15-25 times the diameter of the permeable carrier beads used in the devel- opment process and the lands between grooves are polished to a high drgree, e.g., 25 µinches. The depth of the grooves is to a minimum of 1-2 times bead diameter while the groove width is to a minimum of 2-3 times bead diameter. BO976048

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