JPS6459372A - Developer layer forming device and image forming device - Google Patents

Developer layer forming device and image forming device

Info

Publication number
JPS6459372A
JPS6459372A JP21824187A JP21824187A JPS6459372A JP S6459372 A JPS6459372 A JP S6459372A JP 21824187 A JP21824187 A JP 21824187A JP 21824187 A JP21824187 A JP 21824187A JP S6459372 A JPS6459372 A JP S6459372A
Authority
JP
Japan
Prior art keywords
magnetic
developer
magnetic field
layer
blade
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
JP21824187A
Other languages
Japanese (ja)
Inventor
Yuji Sakami
Hatsuo Tajima
Kenji Okado
Masahiro Inoue
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP21824187A priority Critical patent/JPS6459372A/en
Publication of JPS6459372A publication Critical patent/JPS6459372A/en
Priority to US07/660,152 priority patent/US5239343A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To stably form a layer of a magnetic developer extending over a long period of time, by specifying the length in the direction separated from a developer carrying body on the magnetic field concentrated surface of a magnetic member. CONSTITUTION:On the lower edge side of an opening of a developer supplying device provided with a developing sleeve 22, a non-magnetic blade 24 being a developer control member provided along the longitudinal direction of the lower edge of the opening is provided by fixing the base part to the container side wall, and projecting the tip side to the outside of a container 36 from the lower edge position of the opening. As for a magnetic blade 50 for assisting a control of the non-magnetic plate 24, length (l) in the direction separated from a developer carrying body of a magnetic field concentrated surface being a side face positioned at a magnetic field generating part 23a side is set to 1-10mm. That is, the side face of the magnetic blade 50 concentrates a line of magnetic force from a magnetic pole 23a of the upstream side, but it is not concentrated mainly to the blade end part, and a concentrated magnetic field having width of an equalized distribution is formed on the whole of this surface. Accordingly, the generation of a lump of the developer is prevented. In such a way, the layer of the developer is equalized by a thin layer, and also, the formation of a stale layer can be attained extending over a long period of time.
JP21824187A 1987-08-31 1987-08-31 Developer layer forming device and image forming device Pending JPS6459372A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP21824187A JPS6459372A (en) 1987-08-31 1987-08-31 Developer layer forming device and image forming device
US07/660,152 US5239343A (en) 1987-08-31 1991-02-20 Developing apparatus with regulating member having magnetic and non-magnetic members

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21824187A JPS6459372A (en) 1987-08-31 1987-08-31 Developer layer forming device and image forming device

Publications (1)

Publication Number Publication Date
JPS6459372A true JPS6459372A (en) 1989-03-07

Family

ID=16716803

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21824187A Pending JPS6459372A (en) 1987-08-31 1987-08-31 Developer layer forming device and image forming device

Country Status (1)

Country Link
JP (1) JPS6459372A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412923A2 (en) * 1989-08-11 1991-02-13 Lexmark International, Inc. Toner metering apparatus
JPH04241153A (en) * 1991-01-08 1992-08-28 Nagata Seiki Co Ltd Device of transporting cloth
JPH04333646A (en) * 1991-04-30 1992-11-20 Nagata Seiki Co Ltd Device for take-out of basic fabric
JPH04352857A (en) * 1991-05-23 1992-12-07 Shima Seiki Mfg Ltd Fabric-lowering apparatus of weft knitting machine
JPH0892849A (en) * 1994-09-19 1996-04-09 Gunze Ltd Fabric-winding device of circular knitting machine for knitted fabric
JP2005017871A (en) * 2003-06-27 2005-01-20 Ricoh Co Ltd Developing apparatus and image forming apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975269A (en) * 1982-10-22 1984-04-27 Mita Ind Co Ltd Magnetic brush developing method of electrostatic image
JPS60252379A (en) * 1984-05-30 1985-12-13 Hitachi Ltd Electrostatic image developing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5975269A (en) * 1982-10-22 1984-04-27 Mita Ind Co Ltd Magnetic brush developing method of electrostatic image
JPS60252379A (en) * 1984-05-30 1985-12-13 Hitachi Ltd Electrostatic image developing device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0412923A2 (en) * 1989-08-11 1991-02-13 Lexmark International, Inc. Toner metering apparatus
JPH04241153A (en) * 1991-01-08 1992-08-28 Nagata Seiki Co Ltd Device of transporting cloth
JPH04333646A (en) * 1991-04-30 1992-11-20 Nagata Seiki Co Ltd Device for take-out of basic fabric
JPH04352857A (en) * 1991-05-23 1992-12-07 Shima Seiki Mfg Ltd Fabric-lowering apparatus of weft knitting machine
JPH0892849A (en) * 1994-09-19 1996-04-09 Gunze Ltd Fabric-winding device of circular knitting machine for knitted fabric
JP2005017871A (en) * 2003-06-27 2005-01-20 Ricoh Co Ltd Developing apparatus and image forming apparatus

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