Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2006-01-17
2006-01-17
Bennett, G. Bradley (Department: 2859)
Electrophotography
Diagnostics
Consumable
C399S061000, C399S260000
Reexamination Certificate
active
06987934
ABSTRACT:
In a device for controlling the amount of toner replenished to a developing device depending on the density of a reference image formed on a photoconductor, if the toner density of a developer in the developing device fluctuates extremely; there may occur toner scattering, formation of coarse or rough images, and carrier attachment. To overcome those problems, a photosensor is disposed to detect the toner density in the developing device, and when an output of the photosensor is outside of a predetermined range, a target value to be compared with the detected density of the reference image is modified.
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Bessho Yuji
Fukuda Tadashi
Masuda Koji
Bennett G. Bradley
Canon U.S.A. I.P. Div
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