JPS6431177A - Developing device for image forming device - Google Patents

Developing device for image forming device

Info

Publication number
JPS6431177A
JPS6431177A JP18836687A JP18836687A JPS6431177A JP S6431177 A JPS6431177 A JP S6431177A JP 18836687 A JP18836687 A JP 18836687A JP 18836687 A JP18836687 A JP 18836687A JP S6431177 A JPS6431177 A JP S6431177A
Authority
JP
Japan
Prior art keywords
toner
toner supply
deficiency
developing device
image forming
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
JP18836687A
Other languages
Japanese (ja)
Other versions
JP2839090B2 (en
Inventor
Masaru Furumura
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP62188366A priority Critical patent/JP2839090B2/en
Priority to US07/224,155 priority patent/US5047804A/en
Publication of JPS6431177A publication Critical patent/JPS6431177A/en
Application granted granted Critical
Publication of JP2839090B2 publication Critical patent/JP2839090B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To prevent toner from overflowing and image density from decreasing by supplying toner for a toner supply time corresponding to a deficiency after image forming operation and operating a developing device when a developing device is switched to the other developing device during toner supply with a toner deficiency signal and the toner supply is stopped. CONSTITUTION:This device is equipped with a toner deficiency detecting means which detects a toner deficiency in developing devices 4 and 5, a toner supply means 20 which supplies toner to the developing devices 4 and 5, and a toner supply control means which operates the toner supply means 20 for a prescribed time when the toner deficiency is detected during the operation of the developing devices 4 and 5 and operates the toner supply means and developing devices for a prescribed time after the image forming operation unless specific-time toner supply is completed at the operation stop of the developing devices 4 and 5. Therefore, if the toner deficiency signal is outputted and switching to the other developing device is performed in the middle of the toner supply to stop the toner supply, toner is supplied for the toner supply time of the deficiency after the image forming operation and the developing device is put in operation. Consequently, the necessary toner supply is performed and neither the overflowing of toner nor a decrease in image density is caused.
JP62188366A 1987-07-27 1987-07-27 Developing device for image forming apparatus Expired - Lifetime JP2839090B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62188366A JP2839090B2 (en) 1987-07-27 1987-07-27 Developing device for image forming apparatus
US07/224,155 US5047804A (en) 1987-07-27 1988-07-26 Image forming apparatus having a toner replenishment control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62188366A JP2839090B2 (en) 1987-07-27 1987-07-27 Developing device for image forming apparatus

Publications (2)

Publication Number Publication Date
JPS6431177A true JPS6431177A (en) 1989-02-01
JP2839090B2 JP2839090B2 (en) 1998-12-16

Family

ID=16222359

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62188366A Expired - Lifetime JP2839090B2 (en) 1987-07-27 1987-07-27 Developing device for image forming apparatus

Country Status (1)

Country Link
JP (1) JP2839090B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5811347A (en) * 1981-07-06 1983-01-22 ハロルド・ダブリユ・スミス Solar energy panel
JPS61248066A (en) * 1985-04-25 1986-11-05 Canon Inc Toner replenishing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5811347A (en) * 1981-07-06 1983-01-22 ハロルド・ダブリユ・スミス Solar energy panel
JPS61248066A (en) * 1985-04-25 1986-11-05 Canon Inc Toner replenishing device

Also Published As

Publication number Publication date
JP2839090B2 (en) 1998-12-16

Similar Documents

Publication Publication Date Title
JPS6424283A (en) Method for controlling copying machine
JPS5550264A (en) Electrophotographic copying machine
JPS6431177A (en) Developing device for image forming device
JPS57191655A (en) Controlling method for copying machine with automatic original feeding device
JPS6431178A (en) Developing device for image forming device
JPS57202529A (en) Copying machine
JPS57136668A (en) Developer density controller
JPS56102863A (en) Electrophotographic copying apparatus
JPS5732450A (en) Copying machine
JPS6484270A (en) Electrophotographic device
JPS6425168A (en) Image forming device
JPH0341831B2 (en)
JPS57147190A (en) Memory circuit
JPS6425176A (en) Image forming device
JPS5557856A (en) Copying apparatus
JPS5621926A (en) Electronically controlled turn indicator light
JPS5714866A (en) Control device for copying machine
JPS56109373A (en) Control system for supply of toner of copying machine
JPS6455571A (en) Developing device for copying machine
JPS5770562A (en) Copying device
JPS57135952A (en) Copy preparation action controlling method
JPS6482049A (en) Image forming device with form kind detecting function
JPS57142071A (en) Power supply controlling system
JPS57178255A (en) Controller for electrophotographic copier
JPS6435431A (en) X-ray photographing device

Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term
FPAY Renewal fee payment (prs date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071016

Year of fee payment: 9