Oki OKIPAGE8c Maintenance Manual page 24

(5) Developing
This process applies toner to the latent image on the surface of the drum to convey it into a
toner image. Developing is carried out on the surface of the OPC drum at which the OPC drum
is in contact with the developing roller.
1 The sponge roller transfers toner to the developing roller. The toner is charged
negatively.
Charging roller
2 The toner blade scrapes away excessive toner on the developing roller to form a thin
film of toner on the surface of the developing roller.
3 The toner is attracted to the latent image on the surface of the OPC drum at which
the OPC drum is in contact with the developing roller. The latent image on the
surface of the OPC drum is made visible with the toner.
OPC drum
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Developing toner blade
Sponge roller
Developing roller