JPS5555369A - Developer toner concentration detector - Google Patents

Developer toner concentration detector

Info

Publication number
JPS5555369A
JPS5555369A JP12842578A JP12842578A JPS5555369A JP S5555369 A JPS5555369 A JP S5555369A JP 12842578 A JP12842578 A JP 12842578A JP 12842578 A JP12842578 A JP 12842578A JP S5555369 A JPS5555369 A JP S5555369A
Authority
JP
Japan
Prior art keywords
developer
flow rate
vessel
toner concentration
plate
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
JP12842578A
Other languages
Japanese (ja)
Other versions
JPS6028357B2 (en
Inventor
Isamu Komatsu
Masayasu Anzai
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.)
Koki Holdings Co Ltd
Hitachi Ltd
Original Assignee
Hitachi Ltd
Hitachi Koki 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 Hitachi Ltd, Hitachi Koki Co Ltd filed Critical Hitachi Ltd
Priority to JP12842578A priority Critical patent/JPS6028357B2/en
Publication of JPS5555369A publication Critical patent/JPS5555369A/en
Publication of JPS6028357B2 publication Critical patent/JPS6028357B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To accurately measure toner concentration by controlling an amount of developer moved by a magnetic roller for taking out to a predetermined amount using a flow control plate provided in a detection vessel. CONSTITUTION:Developer 1 in detection vessel 7 is taken out with magnetic roller 8 by controlling its flow rate to a proper value with flow rate control plate 7 provided nearly in the center of the lower opening of vessel 7 and in position B of the lower opening. The flow rate of developer 1 flowing under the lower end of plate 9 is arranged to become nearly half that flowing through position B. Accordingly, each flow rate through both routes on both sides plate 9, namely, the routes on both sides of detection coil 6 becomes similar to each other, and developer 1 in vessel 7 flows at a constant rate uniformly without stagnation, thus permitting toner concentration to be accurately measured.
JP12842578A 1978-10-20 1978-10-20 Developer toner concentration detection device Expired JPS6028357B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12842578A JPS6028357B2 (en) 1978-10-20 1978-10-20 Developer toner concentration detection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12842578A JPS6028357B2 (en) 1978-10-20 1978-10-20 Developer toner concentration detection device

Publications (2)

Publication Number Publication Date
JPS5555369A true JPS5555369A (en) 1980-04-23
JPS6028357B2 JPS6028357B2 (en) 1985-07-04

Family

ID=14984429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12842578A Expired JPS6028357B2 (en) 1978-10-20 1978-10-20 Developer toner concentration detection device

Country Status (1)

Country Link
JP (1) JPS6028357B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10175610B2 (en) * 2016-03-02 2019-01-08 Canon Kabushiki Kaisha Developing device having toner content detection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10175610B2 (en) * 2016-03-02 2019-01-08 Canon Kabushiki Kaisha Developing device having toner content detection

Also Published As

Publication number Publication date
JPS6028357B2 (en) 1985-07-04

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