JPS5451848A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5451848A
JPS5451848A JP11821977A JP11821977A JPS5451848A JP S5451848 A JPS5451848 A JP S5451848A JP 11821977 A JP11821977 A JP 11821977A JP 11821977 A JP11821977 A JP 11821977A JP S5451848 A JPS5451848 A JP S5451848A
Authority
JP
Japan
Prior art keywords
electrostatic image
sleeve
image holding
holding face
toner
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
JP11821977A
Other languages
Japanese (ja)
Other versions
JPS6315580B2 (en
Inventor
Kenju Nagaoka
Teruo Morikawa
Katsuhiko Yamada
Kenji Okawara
Atsushi Kubota
Haruo Kadoi
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 JP11821977A priority Critical patent/JPS5451848A/en
Publication of JPS5451848A publication Critical patent/JPS5451848A/en
Publication of JPS6315580B2 publication Critical patent/JPS6315580B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To obtain even and high-resolving-power toner images free from ground fogs by letting a developer carrier be approached to an electrostatic image holding face and providing a means of forming a developer layer thinner in thickness than the proximity spacing. CONSTITUTION:A toner layer thickness defining member 6 of blade form composed of a soft elastic material such as rubber or the like is contacted to the sleeve 4 surface between the opening 1a of the developing device housing 1 where a rotatable sleeve 4 enclosing a magnet 5 is so disposed as to approach to the photoreceptor surface 5 and the position opposing to the photoreceptor surface 5, so as to form a wedge-form space 8 in which the end angle theta becomes less than 45 deg.. Then, if the sleeve 4 rotates, the even toner layer of around 50mu of a thickness thinner tnan the proximity spacing is formed. When the toner layer opposes to the electrostatic image holding face, it elongates and makes direct contact with the electrostatic image holding face, thus forming the even and high-resolving- power toner image free from ground fogs.
JP11821977A 1977-09-30 1977-09-30 Developing device Granted JPS5451848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11821977A JPS5451848A (en) 1977-09-30 1977-09-30 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11821977A JPS5451848A (en) 1977-09-30 1977-09-30 Developing device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP61204673A Division JPS62182780A (en) 1986-08-30 1986-08-30 Developing device

Publications (2)

Publication Number Publication Date
JPS5451848A true JPS5451848A (en) 1979-04-24
JPS6315580B2 JPS6315580B2 (en) 1988-04-05

Family

ID=14731159

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11821977A Granted JPS5451848A (en) 1977-09-30 1977-09-30 Developing device

Country Status (1)

Country Link
JP (1) JPS5451848A (en)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5990958U (en) * 1982-12-10 1984-06-20 株式会社リコー developing device
JPS59116770A (en) * 1982-12-24 1984-07-05 Toshiba Corp Developing device
JPS6073649A (en) * 1983-09-30 1985-04-25 Toshiba Corp Developing device
JPS6073648A (en) * 1983-09-30 1985-04-25 Toshiba Corp Developing device
JPS60138574A (en) * 1983-12-27 1985-07-23 Toshiba Corp Developing device
JPS6152664A (en) * 1984-08-22 1986-03-15 Matsushita Electric Ind Co Ltd Developing device
JPS61250666A (en) * 1985-04-30 1986-11-07 Tokai Rubber Ind Ltd Frictional electrostatic charge member for one-component toner
JPS61261759A (en) * 1985-05-16 1986-11-19 Tokai Rubber Ind Ltd Frictional electrostatic charging member for one-component type toner
US4624545A (en) * 1982-10-15 1986-11-25 Ricoh Company, Ltd. Developing device with regulated developer supply
JPS6224283A (en) * 1985-07-25 1987-02-02 Fuji Xerox Co Ltd Developing device
JPS6280677A (en) * 1985-10-04 1987-04-14 Ricoh Co Ltd Developing device
JPS6271644U (en) * 1985-10-24 1987-05-07
JPS62168175A (en) * 1986-11-25 1987-07-24 Toshiba Corp Developing device
JPS62172374A (en) * 1986-01-24 1987-07-29 Konishiroku Photo Ind Co Ltd Method for forming multiple color image
JPS62127557U (en) * 1986-02-03 1987-08-13
JPS62191868A (en) * 1986-02-18 1987-08-22 Konishiroku Photo Ind Co Ltd Formation of developer layer
JPS62288869A (en) * 1986-06-06 1987-12-15 Matsushita Electric Ind Co Ltd Developing device and marginal image forming device
JPS63364U (en) * 1986-06-17 1988-01-05
JPS632084A (en) * 1986-06-12 1988-01-07 Konica Corp Developing device
JPS63226680A (en) * 1986-10-09 1988-09-21 Konica Corp Developer layer forming device
JPS63148957U (en) * 1987-03-19 1988-09-30
JPS63192713U (en) * 1987-05-30 1988-12-12
JPS63195343U (en) * 1987-05-30 1988-12-15
JPH0285448U (en) * 1988-12-19 1990-07-04
US4990959A (en) * 1988-07-29 1991-02-05 Fuji Xerox Co., Ltd. One-component developing apparatus with improved toner layer regulating member
JPH0318551U (en) * 1990-06-28 1991-02-22
US5054419A (en) * 1988-05-09 1991-10-08 Konica Corporation Image forming apparatus
US5325637A (en) * 1991-10-31 1994-07-05 Konica Corporation Developing apparatus with an improved sleeve
US5585901A (en) * 1992-06-16 1996-12-17 Fuji Xerox Co., Ltd. Developing machine and carrier containing a charge-imparting agent
US5634181A (en) * 1993-02-16 1997-05-27 Fuji Xerox Co., Ltd. Developing apparatus
JP2012053111A (en) * 2010-08-31 2012-03-15 Brother Ind Ltd Developing device
JP2014002204A (en) * 2012-06-15 2014-01-09 Canon Inc Developing device, process cartridge, and image forming apparatus

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045648A (en) * 1973-07-27 1975-04-23
US4011834A (en) * 1975-10-02 1977-03-15 Xerox Corporation Touchdown electrostatic development apparatus
JPS5273736A (en) * 1975-12-16 1977-06-21 Ricoh Co Ltd Development process for electrostatic latent image
DE2708299A1 (en) * 1976-02-25 1977-09-08 Ricoh Kk DEVICE FOR DEVELOPING AN ELECTROSTATIC IMAGE
JPS5329137A (en) * 1976-08-30 1978-03-18 Ricoh Co Ltd Developing device for electrostatic latent image

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5045648A (en) * 1973-07-27 1975-04-23
US4011834A (en) * 1975-10-02 1977-03-15 Xerox Corporation Touchdown electrostatic development apparatus
JPS5273736A (en) * 1975-12-16 1977-06-21 Ricoh Co Ltd Development process for electrostatic latent image
DE2708299A1 (en) * 1976-02-25 1977-09-08 Ricoh Kk DEVICE FOR DEVELOPING AN ELECTROSTATIC IMAGE
JPS5329137A (en) * 1976-08-30 1978-03-18 Ricoh Co Ltd Developing device for electrostatic latent image

Cited By (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624545A (en) * 1982-10-15 1986-11-25 Ricoh Company, Ltd. Developing device with regulated developer supply
JPS5990958U (en) * 1982-12-10 1984-06-20 株式会社リコー developing device
JPS59116770A (en) * 1982-12-24 1984-07-05 Toshiba Corp Developing device
JPS6073649A (en) * 1983-09-30 1985-04-25 Toshiba Corp Developing device
JPS6073648A (en) * 1983-09-30 1985-04-25 Toshiba Corp Developing device
JPS60138574A (en) * 1983-12-27 1985-07-23 Toshiba Corp Developing device
JPH0254945B2 (en) * 1984-08-22 1990-11-26 Matsushita Electric Ind Co Ltd
JPS6152664A (en) * 1984-08-22 1986-03-15 Matsushita Electric Ind Co Ltd Developing device
JPS61250666A (en) * 1985-04-30 1986-11-07 Tokai Rubber Ind Ltd Frictional electrostatic charge member for one-component toner
JPS61261759A (en) * 1985-05-16 1986-11-19 Tokai Rubber Ind Ltd Frictional electrostatic charging member for one-component type toner
JPS6224283A (en) * 1985-07-25 1987-02-02 Fuji Xerox Co Ltd Developing device
JPS6280677A (en) * 1985-10-04 1987-04-14 Ricoh Co Ltd Developing device
JPH0658565B2 (en) * 1985-10-04 1994-08-03 株式会社リコー Development device
JPS6271644U (en) * 1985-10-24 1987-05-07
JPS62172374A (en) * 1986-01-24 1987-07-29 Konishiroku Photo Ind Co Ltd Method for forming multiple color image
JPS62127557U (en) * 1986-02-03 1987-08-13
JPS62191868A (en) * 1986-02-18 1987-08-22 Konishiroku Photo Ind Co Ltd Formation of developer layer
JPS62288869A (en) * 1986-06-06 1987-12-15 Matsushita Electric Ind Co Ltd Developing device and marginal image forming device
JPS632084A (en) * 1986-06-12 1988-01-07 Konica Corp Developing device
JPS63364U (en) * 1986-06-17 1988-01-05
JPS63226680A (en) * 1986-10-09 1988-09-21 Konica Corp Developer layer forming device
JPS62168175A (en) * 1986-11-25 1987-07-24 Toshiba Corp Developing device
JPH0320746B2 (en) * 1986-11-25 1991-03-20 Tokyo Shibaura Electric Co
JPS63148957U (en) * 1987-03-19 1988-09-30
JPS63192713U (en) * 1987-05-30 1988-12-12
JPS63195343U (en) * 1987-05-30 1988-12-15
US5054419A (en) * 1988-05-09 1991-10-08 Konica Corporation Image forming apparatus
US4990959A (en) * 1988-07-29 1991-02-05 Fuji Xerox Co., Ltd. One-component developing apparatus with improved toner layer regulating member
JPH0285448U (en) * 1988-12-19 1990-07-04
JPH0318551U (en) * 1990-06-28 1991-02-22
US5325637A (en) * 1991-10-31 1994-07-05 Konica Corporation Developing apparatus with an improved sleeve
US5585901A (en) * 1992-06-16 1996-12-17 Fuji Xerox Co., Ltd. Developing machine and carrier containing a charge-imparting agent
US5634181A (en) * 1993-02-16 1997-05-27 Fuji Xerox Co., Ltd. Developing apparatus
JP2012053111A (en) * 2010-08-31 2012-03-15 Brother Ind Ltd Developing device
JP2014002204A (en) * 2012-06-15 2014-01-09 Canon Inc Developing device, process cartridge, and image forming apparatus

Also Published As

Publication number Publication date
JPS6315580B2 (en) 1988-04-05

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