JPS57136671A - Developing device - Google Patents

Developing device

Info

Publication number
JPS57136671A
JPS57136671A JP2266981A JP2266981A JPS57136671A JP S57136671 A JPS57136671 A JP S57136671A JP 2266981 A JP2266981 A JP 2266981A JP 2266981 A JP2266981 A JP 2266981A JP S57136671 A JPS57136671 A JP S57136671A
Authority
JP
Japan
Prior art keywords
developer
blade
holding means
unevenness
wedge
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
JP2266981A
Other languages
Japanese (ja)
Inventor
Fumitaka Hazama
Kimio Nakahata
Masaaki Sakurai
Takeshi Watanabe
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 JP2266981A priority Critical patent/JPS57136671A/en
Publication of JPS57136671A publication Critical patent/JPS57136671A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To form a thin layer of a developer stably and continuously without unevenness by applying a compound constitution, which uses a magnetic material and a nonmgnetic material in combination, to a blade which regulates the layer thickness of a developer supplied to a developer holding means surface. CONSTITUTION:With regard to the cross section shape of a blade 2, the upper half part is longitudinally long and rectangular, and the lower part is a wedge- shaped edge part; the surface 21 of the developer hopper side of the wedge- shaped edge part and the surface of a developer holding means 1 have an acute angle theta1, e.g., 120-150 deg.. The developer hopper side 2a uses a magnetic material (e.g., iron) as one of materials of the blade 2, and the remaining thick part 2b uses a nonmagnetic material (e.g., stainless steel). Consequently, a thin layer of a developer is formed on the developer holding means 1 stably and continuously without causing the unevenness of coating, deposition and blocking trouble.
JP2266981A 1981-02-18 1981-02-18 Developing device Pending JPS57136671A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2266981A JPS57136671A (en) 1981-02-18 1981-02-18 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2266981A JPS57136671A (en) 1981-02-18 1981-02-18 Developing device

Publications (1)

Publication Number Publication Date
JPS57136671A true JPS57136671A (en) 1982-08-23

Family

ID=12089250

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2266981A Pending JPS57136671A (en) 1981-02-18 1981-02-18 Developing device

Country Status (1)

Country Link
JP (1) JPS57136671A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6271644U (en) * 1985-10-24 1987-05-07
JPS62127557U (en) * 1986-02-03 1987-08-13
JPS6461776A (en) * 1987-08-31 1989-03-08 Canon Kk Developing device
US7643779B2 (en) 2006-02-20 2010-01-05 Ricoh Company, Ltd. Developer transporting amount controlling member, developing apparatus, imaging apparatus, and method for exchanging developing unit
JP2014178439A (en) * 2013-03-14 2014-09-25 Ricoh Co Ltd Developer regulation member, developing apparatus, image forming apparatus, and process cartridge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6271644U (en) * 1985-10-24 1987-05-07
JPS62127557U (en) * 1986-02-03 1987-08-13
JPS6461776A (en) * 1987-08-31 1989-03-08 Canon Kk Developing device
US7643779B2 (en) 2006-02-20 2010-01-05 Ricoh Company, Ltd. Developer transporting amount controlling member, developing apparatus, imaging apparatus, and method for exchanging developing unit
JP2014178439A (en) * 2013-03-14 2014-09-25 Ricoh Co Ltd Developer regulation member, developing apparatus, image forming apparatus, and process cartridge

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