Electrophotography – Diagnostics – Consumable
Reexamination Certificate
2008-04-24
2009-08-18
Royer, William J (Department: 2852)
Electrophotography
Diagnostics
Consumable
C399S030000, C399S049000
Reexamination Certificate
active
07577371
ABSTRACT:
An image forming apparatus includes a first controller for controlling a replenishing operation of a toner replenisher, based on concentration information relating to toner concentration in a developing unit; and a second controller for controlling a correction operation for an image forming condition based on concentration information relating to a concentration control patch formed on an image bearing member. The second controller does not execute the correction operation for the image forming condition, based on the concentration information relating to toner concentration in the developing unit, regardless of the concentration information relating to the concentration control patch, or limits a correction amount for the image forming condition in the correction operation, based on the concentration information relating to the toner concentration in the developing unit.
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Japanese Office Action dated Nov. 18, 2008 in Japanese Application No. 2004-266122, and an English-language translation thereof.
Japanese Notification of Reason for Refusal dated Apr. 14, 2009 in Japanese Application No. 2004-266122, and an English-language translation therefor.
Canon Kabushiki Kaisha
Fitzpatrick ,Cella, Harper & Scinto
Royer William J
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