‘“- ‘“’ ‘:’
. . . . . .
,.,
SF-7700
SF–775O
Step 6: Developing
Toner is attr~ad over the latent image area on the drum Surfa@
to form a visible image. Toner is positively-~ ~ ti~n witi
the ~er. The SF-7700~W em~oys two ampownt magnatic
brush deve~ing system and toner is attrmad by the negative
tiarge on the drum surfaoe.
Sin- the drum surfam potentialis higherin the dti image area
(exposedto lass intenselight),moret~er isthereforeattradad md
vi= versa.
0; tier (magneticpatiicle)
●: Toner (charged positiveby tidion)
Step 7: Transfer~ransfer coronaunit) ‘-
AS the ~py paper is charged to a higherpotentialthan the drum
surfam potential by means of a negative transfer mrona unk, a
str~er bondingfom appears between the -y paper and the
toner than between the drum and the toner.This attra~ the toner
to the panel from the drum.
Toner transferefficie~ is between70 to SOVO,20 to WYOremains
on the drum.
‘/
I
v
_— -
——.
7–6
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