Title:
画像形成装置
Document Type and Number:
Japanese Patent JP4340117
Kind Code:
B2
Abstract:
An image forming apparatus includes a toner concentration detector for detecting the toner concentration within a two-component developing unit, a toner supply unit for supplying a toner into the developing unit, a storage unit for sequentially holding and updating a history of a toner supply operation for a certain period of time, and a toner concentration control unit for determining the time of the toner supply operation by the toner supply unit, based on information stored in the storage unit and a difference between an output value of the toner concentration detector and a reference value, and maintaining the toner concentration constant.
Inventors:
Yasuo Takuma
Kaoru Kataoka
Kaoru Kataoka
Application Number:
JP2003314016A
Publication Date:
October 07, 2009
Filing Date:
September 05, 2003
Export Citation:
Assignee:
株式会社リコー
International Classes:
G03G15/00; G03G15/08
Domestic Patent References:
| JP2001312134A | ||||
| JP2003076130A |