A non-interactive development system generates a toner cloud in a development
zone
by an AC biased stationary electrode positioned in contact with the back surface
of a movable toned dielectric donor belt having a patterned electrode structure
on the front surface thereof. The AC biased electrode produces AC fringe fields
near the edges of the patterned electrode structure that cause the generation of
a toner cloud for developing an electrostatic latent image. The donor belt is partially
wrapped around a magnetic brush to produce a toner loading zone. Isolated patterned
electrodes on the donor belt near the entrance region of the toner loading zone
are biased to cause unloading of toner from the donor belt, while isolated electrodes
near the exit region of the toner loading zone are biased to cause toner reloading
of the donor belt.
