JPS6435580A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS6435580A
JPS6435580A JP19161487A JP19161487A JPS6435580A JP S6435580 A JPS6435580 A JP S6435580A JP 19161487 A JP19161487 A JP 19161487A JP 19161487 A JP19161487 A JP 19161487A JP S6435580 A JPS6435580 A JP S6435580A
Authority
JP
Japan
Prior art keywords
toner
replenishing
concentration
developer
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19161487A
Other languages
Japanese (ja)
Inventor
Hisaaki Kono
Yasufumi Tanimoto
Kouji Ishida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Toshiba Intelligent Technology Co Ltd
Original Assignee
Toshiba Corp
Toshiba Intelligent Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Toshiba Intelligent Technology Co Ltd filed Critical Toshiba Corp
Priority to JP19161487A priority Critical patent/JPS6435580A/en
Publication of JPS6435580A publication Critical patent/JPS6435580A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To always form an image at a fixed density and to prevent deterioration in image forming quality by comparing a developer concentration of a developing means with a reference concentration, judging the replenishing amount of a developer, driving a replenishing means and performing the replenishment of the developer according to the change in the consumption of the developer. CONSTITUTION:A control circuit 120 judges the number of replenishing times and replenishing time according to a voltage value (toner/concentration ratio) from a concentration detecting device 70. Namely, a toner concentration of a developing device 18 is compared with the reference value and the replenishing amount of toner corresponding to the difference is judged. The replenishment of the toner is performed according to the judged replenishing amount and the change in the consumption of the toner by driving the replenishing means. Therefore, when the image whose image density is high or the image whose density is low is copied, the most suitable toner amount can be replenished. Thus, printing can be always performed at the fixed density and the deterioration in the image forming quality is prevented.
JP19161487A 1987-07-31 1987-07-31 Image forming device Pending JPS6435580A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19161487A JPS6435580A (en) 1987-07-31 1987-07-31 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19161487A JPS6435580A (en) 1987-07-31 1987-07-31 Image forming device

Publications (1)

Publication Number Publication Date
JPS6435580A true JPS6435580A (en) 1989-02-06

Family

ID=16277563

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19161487A Pending JPS6435580A (en) 1987-07-31 1987-07-31 Image forming device

Country Status (1)

Country Link
JP (1) JPS6435580A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03114857U (en) * 1990-03-12 1991-11-26
US5218409A (en) * 1989-09-19 1993-06-08 Sanyo Electric Co., Ltd. Image forming apparatus
EP0782052A2 (en) 1995-12-28 1997-07-02 Fuji Xerox Co., Ltd. Image forming apparatus and method enabling toner amount control without actual measurement of toner characteristic

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5218409A (en) * 1989-09-19 1993-06-08 Sanyo Electric Co., Ltd. Image forming apparatus
JPH03114857U (en) * 1990-03-12 1991-11-26
EP0782052A2 (en) 1995-12-28 1997-07-02 Fuji Xerox Co., Ltd. Image forming apparatus and method enabling toner amount control without actual measurement of toner characteristic

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