JPS6461775A - Toner supply control method for developing device of image forming device - Google Patents

Toner supply control method for developing device of image forming device

Info

Publication number
JPS6461775A
JPS6461775A JP21957087A JP21957087A JPS6461775A JP S6461775 A JPS6461775 A JP S6461775A JP 21957087 A JP21957087 A JP 21957087A JP 21957087 A JP21957087 A JP 21957087A JP S6461775 A JPS6461775 A JP S6461775A
Authority
JP
Japan
Prior art keywords
toner
toner supply
value
supply
developing device
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.)
Granted
Application number
JP21957087A
Other languages
Japanese (ja)
Other versions
JP2637740B2 (en
Inventor
Fumio Tada
Junichi Takamatsu
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Priority to JP62219570A priority Critical patent/JP2637740B2/en
Publication of JPS6461775A publication Critical patent/JPS6461775A/en
Application granted granted Critical
Publication of JP2637740B2 publication Critical patent/JP2637740B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To obtain an invariably accurate reference value by setting a value obtained by adding a 2nd correcting value different from a 1st correcting value for normal control to the detected value of a toner supply means as a reference value at specific intervals after developer replacement. CONSTITUTION:A toner cartridge is attached detachably to the upper part of a toner hopper and this toner cartridge is replaced to supply toner into the toner hopper. In a developing container, a toner control sensor 33 is provided which detects the magnetic permeability of the developer in the container. Further, a humidity sensor 34 which detects the humidity in a copying machine is provided in the peripheral area of a photosensitive drum nearby the developing device. Detection signals of both sensors 33 and 34 are inputted to a CPU 36 through an A/D converter 35 and this CPU 36 outputs a driving signal to a motor 29 for toner supply to control toner supply.
JP62219570A 1987-09-01 1987-09-01 Method of controlling toner supply of developing device in image forming apparatus Expired - Fee Related JP2637740B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62219570A JP2637740B2 (en) 1987-09-01 1987-09-01 Method of controlling toner supply of developing device in image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62219570A JP2637740B2 (en) 1987-09-01 1987-09-01 Method of controlling toner supply of developing device in image forming apparatus

Publications (2)

Publication Number Publication Date
JPS6461775A true JPS6461775A (en) 1989-03-08
JP2637740B2 JP2637740B2 (en) 1997-08-06

Family

ID=16737581

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62219570A Expired - Fee Related JP2637740B2 (en) 1987-09-01 1987-09-01 Method of controlling toner supply of developing device in image forming apparatus

Country Status (1)

Country Link
JP (1) JP2637740B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484741A (en) * 1977-12-19 1979-07-05 Ricoh Co Ltd Toner density controlling method and device for copier
JPS5833271A (en) * 1981-08-21 1983-02-26 Olympus Optical Co Ltd Automatic toner density adjusting device of electrophotographic device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5484741A (en) * 1977-12-19 1979-07-05 Ricoh Co Ltd Toner density controlling method and device for copier
JPS5833271A (en) * 1981-08-21 1983-02-26 Olympus Optical Co Ltd Automatic toner density adjusting device of electrophotographic device

Also Published As

Publication number Publication date
JP2637740B2 (en) 1997-08-06

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees