Sharp AL-840, Digital Copier, AL-800 service manual Development section

b. Development section

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No.			Parts		Note
	Name	Type		Function/operation
1	Developing roller			Attaches toner to the latent electrostatic
				images on the OPC drum to convert it into
				a visible image.
2	Developing doctor			Controls toner quantity on the developing
				roller and charges toner.
3	Developing bias			Connects the developing roller and the bias
	electrode			voltage output (high voltage PWB).
4	Potential control			Connects the developing roller and the bias
	electrode			voltage output (high voltage PWB).
5	Toner stirring roller			Lead toner to the developing roller and
				charges toner.
6	Zenor diode			Maintains the potential between the
				developing roller and the toner stirring roller
				at a constant level.
7	Toner seal			Shields toner from leaking outside the
				developing unit.
8	Potential control sheet			Maintains the developing roller potential at
				a constant level.

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