JPS6421468A - Developing device - Google Patents

Developing device

Info

Publication number
JPS6421468A
JPS6421468A JP62178482A JP17848287A JPS6421468A JP S6421468 A JPS6421468 A JP S6421468A JP 62178482 A JP62178482 A JP 62178482A JP 17848287 A JP17848287 A JP 17848287A JP S6421468 A JPS6421468 A JP S6421468A
Authority
JP
Japan
Prior art keywords
developer
balance
distribution
screw pitch
screw
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
JP62178482A
Other languages
Japanese (ja)
Other versions
JP2819530B2 (en
Inventor
Noboru Sawayama
Masayuki Takashima
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 JP62178482A priority Critical patent/JP2819530B2/en
Publication of JPS6421468A publication Critical patent/JPS6421468A/en
Application granted granted Critical
Publication of JP2819530B2 publication Critical patent/JP2819530B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To maintain the balance of the distribution of a developer satisfactorily, by forming the developer feeding function of a an agitating screw by changing in an axial direction so as to keep the floating balance of the developer. CONSTITUTION:The screw pitch of the agitating screw 9 is provided with variation so as to keep the floating balance of the developer. In other words, the screw pitch P2 at a horizontal feed start part is set larger than the screw pitch P1 at a horizontal feed completion part setting the center part of the agitating screw 9 as a boundary. The screw pitch P2 is set so that it can be balanced to the horizontal feed quantity of a separator 8 in a state where the fluidity of the developer is placed under the optimum state and the balance of the distribution of the developer can be kept as the whole of the developer. Meanwhile, the screw pitch P1 is set so that it can be balanced to the horizontal feed quantity of the separator 8 in the state where the fluidity of the developer is lowered to minimum and the balance of the distribution of the developer can be kept as the whole of the developer. In such a way, it is possible always to maintain the balance of the distribution of the developer at a satisfactory condition.
JP62178482A 1987-07-17 1987-07-17 Developing device Expired - Lifetime JP2819530B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62178482A JP2819530B2 (en) 1987-07-17 1987-07-17 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62178482A JP2819530B2 (en) 1987-07-17 1987-07-17 Developing device

Publications (2)

Publication Number Publication Date
JPS6421468A true JPS6421468A (en) 1989-01-24
JP2819530B2 JP2819530B2 (en) 1998-10-30

Family

ID=16049245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62178482A Expired - Lifetime JP2819530B2 (en) 1987-07-17 1987-07-17 Developing device

Country Status (1)

Country Link
JP (1) JP2819530B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0475332A2 (en) * 1990-09-14 1992-03-18 Mita Industrial Co. Ltd. Developer agitating method and developer agitating apparatus
EP0529807A2 (en) * 1991-08-26 1993-03-03 Xerox Corporation Improved developer auger for use in an electrophotographic printing machine
US5249019A (en) * 1989-11-29 1993-09-28 Mita Industrial Co., Ltd. Feed roller for mixing and feeding a powder
JPH0740930A (en) * 1993-07-23 1995-02-10 General Patsukaa Kk Nozzle lowering sensor in inactive gas-filling device for wrapping machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100472A (en) * 1982-12-01 1984-06-09 Fuji Xerox Co Ltd Toner supplying device
JPS626284A (en) * 1985-07-02 1987-01-13 Fujitsu Ltd Developing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100472A (en) * 1982-12-01 1984-06-09 Fuji Xerox Co Ltd Toner supplying device
JPS626284A (en) * 1985-07-02 1987-01-13 Fujitsu Ltd Developing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249019A (en) * 1989-11-29 1993-09-28 Mita Industrial Co., Ltd. Feed roller for mixing and feeding a powder
EP0475332A2 (en) * 1990-09-14 1992-03-18 Mita Industrial Co. Ltd. Developer agitating method and developer agitating apparatus
EP0529807A2 (en) * 1991-08-26 1993-03-03 Xerox Corporation Improved developer auger for use in an electrophotographic printing machine
EP0529807B1 (en) * 1991-08-26 1996-10-02 Xerox Corporation Improved developer auger for use in an electrophotographic printing machine
JPH0740930A (en) * 1993-07-23 1995-02-10 General Patsukaa Kk Nozzle lowering sensor in inactive gas-filling device for wrapping machine

Also Published As

Publication number Publication date
JP2819530B2 (en) 1998-10-30

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Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term