JPS5528082A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5528082A
JPS5528082A JP10201278A JP10201278A JPS5528082A JP S5528082 A JPS5528082 A JP S5528082A JP 10201278 A JP10201278 A JP 10201278A JP 10201278 A JP10201278 A JP 10201278A JP S5528082 A JPS5528082 A JP S5528082A
Authority
JP
Japan
Prior art keywords
developer
residual amount
consumption
transfer paper
highest
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
JP10201278A
Other languages
Japanese (ja)
Inventor
Takashi Yano
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.)
Ricoh Co Ltd
Original Assignee
Ricoh 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP10201278A priority Critical patent/JPS5528082A/en
Publication of JPS5528082A publication Critical patent/JPS5528082A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To accurately detect the residual amount of developer despite uneven consumption of the developer by installing detecting elements in the portions where the rate of developer consumption is highest and detecting the residual amount of the developer of a feed vessel. CONSTITUTION:The developer is supplied from the central part in the width direction of the feed opening 5a of a developer feed hopper 5 irrespective of transfer paper sizes and this central part is the portion where the rate of consumption of the developer is highest. Hence, if the photoelectric unit 11 formed light emitting element, photo detector 10, 11, etc. is installed in the transparent small chambers 7, 8 provided in the central portions and the residual amount of the one-component type developer in the hopper 5 is detected, the accurate residual amount of the developer is detected irrespective of the sizes of the transfer paper. As a result, the replenishment of the developer is correctly controlled and the occurrence of uneven image densities in the width direction of the transfer paper prevented.
JP10201278A 1978-08-22 1978-08-22 Developing device Pending JPS5528082A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10201278A JPS5528082A (en) 1978-08-22 1978-08-22 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10201278A JPS5528082A (en) 1978-08-22 1978-08-22 Developing device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP18462280A Division JPS56107272A (en) 1980-12-25 1980-12-25 Developing device

Publications (1)

Publication Number Publication Date
JPS5528082A true JPS5528082A (en) 1980-02-28

Family

ID=14315841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10201278A Pending JPS5528082A (en) 1978-08-22 1978-08-22 Developing device

Country Status (1)

Country Link
JP (1) JPS5528082A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56107272A (en) * 1980-12-25 1981-08-26 Ricoh Co Ltd Developing device
EP0613064A2 (en) * 1993-02-25 1994-08-31 Sharp Kabushiki Kaisha Developer device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56107272A (en) * 1980-12-25 1981-08-26 Ricoh Co Ltd Developing device
EP0613064A2 (en) * 1993-02-25 1994-08-31 Sharp Kabushiki Kaisha Developer device
EP0613064A3 (en) * 1993-02-25 1996-02-21 Sharp Kk Developer device.
US5548385A (en) * 1993-02-25 1996-08-20 Sharp Kabushiki Kaisha Developer device that gradually replaces degraded developer with fresh developer

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