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24 February, 1999
DEVELOPMENT UNIT
2.6.3 DEVELOPMENT MECHANISMS
Overview
[C]
[A]
[D]
[B]
A259D318.WMF
The developer (380 g) in each development unit is supplied to the development
roller [A] by the two mixing augers [B] and attracted onto the roller surface by the
magnets inside the development roller.
The attracted developer is trimmed to the desired thickness by the magnetic doctor
[C], and then carried out to the drum [D] where the latent image is developed. The
magnetic doctor blade reduces the developer setting time. It also maintains the
image density more effectively than a non-magnetic doctor blade.
The uniform clearance (photoconductor gap: PG) between the development roller
[A] and the drum [D] is guaranteed because the cover around the development unit
shaft fits into the drawer tightly at the front and at the rear.
2-69
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